CS

2011 - 4 - 1 CE Confidential

SERVICE MANUAL

M400 Series(M400 / M401 / M402 / M403)

M400 Series(M400/401/402/403) MFP FIELD SERVICE MANUAL

Specif ications

Main Body Duplex Unit(H type)

Option Paper Feed Unit

Installation Installing Condit ions

Environments Installat ion

Unpacking and Checking Components Option tray Image Cartridge

Maintenance Preventive Maintenance

User Replaceable Items Other maintenance items

Detailed Description IMAGE PROCESS

Electrificat ion Exposure Development Transfer Cleaning

Printer Overview Printer Components Paper Path

Electrical Components Drive Chain Main Driving Gear Units

Laser Unit Structure and Optical System Path

AIO Cartridge Overview Drum Cartridge Components Toner Cartridge Components Drum Cartridge Drive Toner Cartridge Drive Drum Cartridge Applied Voltage Toner Cartridge Applied Voltage Toner Cartridge and Drum Unit Replacement

Paper Feed Overview Main Tray Components and Feeding and Isolat ing Mechanism Main Body’s Pickup Part Components and Driving Mechanism Main Paper Feeder Drive MPT(Mult ipurpose Tray) Duplex Unit Components Duplex Unit Drive Registrat ion Unit

Image Fusing Overview

Delivery Unit Overview Delivery Unit Components Delivery Unit Drive

Understanding Control Panel Overview

Flatbed Scanner Overview Scan Cover ASSY Components CIS ASSY Components Drive ASSY Components

Scan Frame ASSY Components CIS Drive Optical System

ADF (Auto Document Feeder) Overview ADF’s Top Cover ASSY Components Pick Up ASSY Components Tray ASSY Components Motor ASSY Components Top Guide ASSY Components A3 ASSY Components

Front Part Overview System Card Components and Main Functions User Interface Controller Card (UICC) Components and Main Functions FAX Components and Main Functions LVPS Components and Main Functions HVPS Components and Main Functions

Replacement and Adjustment Before Start ing Exterior Cover

Rear Door and Cover Left Cover Right Cover Front Door Upper Cover Paper Delivery Cover

Laser Optics Laser Unit Removal

Main Driving Motor Main Driving Gear Unit

Main Driving Gear Unit Removal Drum and Development Unit

Removing Image Cartridge from the Main Body Separating Drum Unit and Development unit Transfer Roller

Fusing Unit

Fusing Unit Removal Fusing Lamp Thermostat and Fuse

Cooling Fan Paper Feed

Separating Main Feed Roller Paper Detect ion Sensor Manual Paper Tray (MPT) MPT’s Bottom Body A’ssy Frict ion Pad Replacement MPT Paper Detect ion Sensor Removal Pick Roll’s Top Body A’ssy Removal Option tray Unit Cover Removal Option tray Pickup Roller Removal Option tray Feeding Roller Removal Registrat ion Guide A’ssy Registrat ion Roller Removal Paper Delivery Unit

Duplex Unit Duplex Unit Removal

Front Part Main Board PDU

ADF Exterior Cover ADF Front Cover ADF Rear Cover ADF Top Cover

ADF Unit ADF Pick up Assembly ADF Isolat ion Pad ADF Idle Guide ADF Pressure Plate ADF’s Document Tray Assembly ADF Assembly Removal ADF Top Guide and Motor Assembly A3 Clutch Assembly

Scanner Flat Bed Unit

Scanner Flat Bed Assembly Removal Scanner Unit

Left Scanner Cover Right Scanner Cover Rear Scanner Cover Control Panel Scan Cover Assembly CIS Assembly Scanner Drive Assembly

Troubleshooting Error Messages and Error Codes

Service Error Code User Interact ive Messages and Paper Jam Message Paper Jam

Service Menu Diagnosis Menu

Diagnosis Mode Optional Tray S/W Upgrade (Download)

Specif ications

Main Body

Main Body Components

1. Basic Components: Tray 1 (250 sheets) + Mult ipurpose Tray (50 sheets) 2. Basic Components + 2 Option trays (250 sheets) + Mult ipurpose Tray (50 sheets)

ADF Scanner 250 Tray

1.Scan Speed: B&W 25PPM Color 8.3PPM

2. Size: A5-Legal 3. ADF Capacity: 35 sheets

1. Type: Color CIS 2. Scan Speed: B&W 0.6ms/line

Color 1.8ms/line 3. Size: Max. A4(LT)

1. Capacity: 250 sheets/75gsm 60~120gsm

2. Media Size: Max-Legal, Min- A5

3. Paper Type: Plain Paper

Printer Engine

Duplex Unit (30/35 PPM)

1.Print Speed: 24/34/38 ppm 2. Output Capacity: 150 sheets 3.Resolut ion: 600x600dpi 4.Noise: under 53dB(A) 5.Enclosed Cartridge: 2.5K 6.Drum Cartridge: 34K 7.A/M Toner Cartridge: 8K

1. Operation: Easy Paper Jam Removal

2. Deskew : Active deskew system

3. 16spm

MPT Machine Size Electric

1. Capacity: 50 sheets/80gsm 2. Media Weight: 60-163gsm 3. Media Type: Plain Paper,

Transparency, Envelope, Label, Cover/Card Stock

4. Size: 3”x5”(Min.) 8.5”x14.0”(Max.)

Size: WxDxH=16.3”x14.8”x13.9” Printer Height=8.1” Paper Stack H = 2.3” Scanner Height = 1.04” ADF Height = 2.44”

1. 24PPM, Low Cost GDI SOC 2. 34/38PPM, PCL/PS, Network 3. Low cost LVPS/HVPS 4. LCD Display 5. Modem 33.6Kbps

Specifications

Category L model(M400) LF model(M401) MF model(M402) HF model(M403)

Print Speed (Letter) 24ppm 34ppm 38ppm

First Print Speed Under 10 seconds

Resolution (dpi) 600X600(enhanced 1200)

Tray Capacity 250 sheets

Paper Size A5 ~ Legal

Multipurpose Tray Capacity

50 sheets

Output Capacity 150 sheets

ADF Presence and Capacity

X O (35 sheets)

Option 250 sheets Tray 250 sheets Tray, Wi-FI

Memory 128MB 256MB(Exp. Max.))

Duplex Unit

LCD Display Mono, 2 line 16 chars 2.1" Monochrome Graphic LCD (128x32 Pixels)

Interface Port 1 USB 1 USB, Network, Ethernet

Emulation GDI PCL, PS, Network

Operating System Windows XP(32/64bit), Windows Server 2003(32/64bit), Windows Vista(32/64bit), Windows Server 2008(32/64bit), Windows 7(32/64bit), Linux, MAX OS 10.4 and later

Image Cartridge 2.5K(enclose), 2.5K/5K/8K(A/M) 2.5K(enclose), 2.5K/5K/8K(A/M)

Weight 12.2 kg 13.5 kg 14.7 kg

Dimension (W X D X H)

16.3” X 14.8” X 12.3”

16.3” X 14.8” X 13.9”

Paper Specification

Feeder By paper type Paper Size

Main Feeder 250 sheets of plain papers, 50 labels, 50 sheets of thick papers

A4, A5, JIS B5, Folio, Letter, Legal, Executive, Statement

Option tray 250 sheets of plain papers A4, A5, JIS B5, Folio, Letter, Legal

Multipurpose Tray 50 sheets of plain papers, 5 envelops, 15 labels, 5 postcards, 50 sheets of Legal

Min. 76.2 X 127mm(3 X 5 inch) Max. 216 X 355.6mm(8.5 X 14 inch)

size papers

2 Side Print 60 ~ 90 gsm of plain papers (16 ~ 24 lb)

A4, Letter

ADF Tray

35 sheets of plain papers

A4, A5, JIS B5, Folio, Letter, Legal, Executive, Statement

Duplex Unit (H type)

Duplex Unit Components

Duplex Unit Specification

Category Descript ion

Paper Weight 75g/㎡(20 lb), 60~90 g/㎡(16~24 lb)

Paper Size Paper (A4 & Letter), 210~215.9 mm X 279.4~355.6 mm (W X L)

Sort Method Left Alignment

Operation Method Main operation and gear link operation

Paper Method Peek-a-boo method Paper skew size x=0.015mm, y=0.01mm

Basic Mount 34 ppm/ 38ppm (M402/M403)

* Can be opened easily with a button in from ⇒ easy to remove jams

Base Body

Upper Body Front Body

Option

Paper Feed Unit

Feeder Components

Feeder Specification

Category Descript ion

Function Increase Tray’s capacity

Speed 24ppm(M401) ~ 38ppm(M403)

Feeder Capacity 250 sheets (75gsm xerographic paper)

Supporting Papers Min. A5 ~ max. Legal(xerographic or business paper)

(N/A: Envelops, universal, postcards, OHP, labels, etc.)

Paper Weight 16 ~ 28 lb(65 ~ 105gsm) paper

Dimension (H/W/D) 103 / 389 / 377mm

Weight Appx. 3.5kg

Tray 1.Friction Pad assy 2.Center Alignment System 3. Rising Base Pin (1) + Rising Sprint (2EA) 4. 2 Step-End Fence 5. Tray Beam Detect Session

Frame & Exterior 1. Frame 2mold parts-1 Press part 2. Exterior 6mold parts 3. Printer and AIO’s Up/Down Installation 4. Dimension: 389(w)x377(D)X103(h)

Pickup & Feed Roll Assy 1.Pickup Roll Assy -D-Roller, 2 Idler

-2 segment gear clutch assy

-DC solenoid (1)

2.Feed Roll Assy -Rubber(EPDM)+TU -Backup Roller (POM, 2), PAN Spring

Drive 1. Stepping Motor -PM type, 1-2 Phase, 375’ step angle 2. Use train of gears

Installat ion

Installing Condit ions

Environments

The printer must be installed at following places.

Good ventilat ion and flat surface No obstacles within 8cm from printer’s right side for cooling fan to operate properly No direct sunlight exposure and dustless and clean place No direct cold or warm air blown from air condit ioner or heater Printer operating temperature: 15.6°C ~ 32.2°C (shipping and storage: -40.0°C ~ 60.0°C)

Installat ion

Unpacking and Checking Components

Unpacking

1. Take the printer and all components from the box. 2. Remove tapes in and on the printer. 3. Check the printer and included components.

Included components

No Item No. Item Qty. Remarks

1 - Basic Tray 1 250 sheets

2 MM1A0556 AC power cord 1 110V

3 L0025703 USB cable 1

4 M0124133(M402/M403) Quick installat ion manual 1

5 M0124112(M401) M0124132(M402,M403)

Driver CD & User Manual 1

6. M0124123 Paperport Utility CD 1

Option tray

Installation

Please proceed with the followings before installing the opt ion tray after the printer installat ion. Turn the printer’s power off Remove the power cord from the printer and remove all cables on the backside

1. Remove all wrappings and tapes on the feeder. 2. Pull the feeding unit out from the feeder.

3. Hold both edges of support and place it on the printer placing locat ion. 4. Re-install the feeder. Push it in unt il it completely attaches.

2. Power cord

3. USB cable

4. Quick installat ion manual

5. Driver CD / 6. Paperport ut ility CD

1. Tray (basic 250 sheets), Cartridge (wrapped and enclosed in the printer)

5. Hold both handles on the bottom sides and lift it up and place it on the placing location. Match the tab, narrow hole and connector on the top of the feeder exactly with printer’s bottom.

Place it on the feeder and check if it is accurately on the feeder.

You must turn the printer’s power off before installing or removing option tray.

Handle

Hole

Connector

Tab

Image Cartridge

Installation

1. Open the top front cover.

2. Hold the cartridge handle and pull it out while lifting it up toward outside.

3. Remove the cartridge wrapping.

Cartridge handle

Do not touch the cartridge’s bottom drum with bare hands.

4. Hold cartridge handles and shake it lightly to spread toner evenly.

5. Hold cartridge handles and place the both cartridge hooks with the printer holes. 6. Push the cartridge in until it clicks and locks.

7. Close the front cover. Check if both ends of cover clicked and locked.

Check if mult ipurpose tray’s cover is closed when closing the front cover. If the front cover is closed while mult ipurpose tray’s cover is open, it can cause paper jam and malfunction.

Maintenance

Preventive Maintenance

User Replaceable Items

Items Life Cycle

Toner Cartridge Enclosed:2.5K (M401/M402/M403)

AM : 2.5K/5K/8K (M401/M402/M403) Drum Unit 34K

Condit ions:

1. Above life Cycle was measured by A4 and 5% chart as base

2. Standard temperature and humidity condit ions 3. Life Cycle may vary per ambient condit ions and print ing condit ions

Other maintenance items

This product(MFP) does not require addit ional maintenance items. However, some items need to be replaced periodically to guarantee it’s funct ion.

1. Fusing unit: 100,000 sheets 2. Pick up roll tray: 80,000 sheets 3. Separation pad mult ipurpose tray: 30,000 sheets 4. Separation pad tray: 80,000 sheets 5. Transfer roller: 50,000 sheets 6. ADF separation pad: 30,000 sheets

The maximum monthly duty cycle of this product (MFP) is 50,000 sheets.

Detailed Description

IMAGE PROCESS

Electrif ication

Voltage of -1650V is applied to electrification roller from HVPS and the drum surface gets electrification of 1100V.

Exposure

Laser scanning is performed to the image print ing area and the surface electric potential of scanned area drops to about -300V to form ‘Latent Image’.

Development

Images are formed on the drum surface by attaching the electrificat ion toner with about -600V via development roller and Doctor blade on the latent image area formed by laser from exposure stage.

Transfer

Images are formed by tonner transfer on the drum surface from the Development stage and when paper passes, about over +2000V electric potential applied transfer roller pulls the image forming toner particles on drum surface to form unsettled images on the paper.

Cleaning

Remaining toner on the drum surface after transferred to paper gets trimmed by cleaning blade before gett ing into electrificat ion roller and gets collected in the used toner collect ing space.

Printer Overview

Printer Components

1. Badge Roller

2. LSU 3. Polygon Mirror Motor

4. Cleaning Blade

5. Electrification Roller

6. OPC Drum

7. Development roller

8. Doctor Blade

9. Add Roller

10. Paddle Roller

11. Mid Roller

12. Multipurpose Tray Feed Roller

13. Multipurpose Tray Friction Pad

14. Tray 1 Feed Roller

15. Tray 1 Friction Pad

16. Tray 1 Base Plate

17. Registration Dam

18. Registration Roller

19. Transfer Roller

20. Fusing Hot Roller

21. Pressurize Roller

Paper Path

1. Print bin 2. Bypass Tray

3. Main Feeder

4.Optional Feed Unit

5. Duplex Unit

Electrical Components

Symbol Name Function

Motor

M1 Main Operates main body

M2 Polygon mirror Rotates polygon mirror motor

M3 Exhaust fan Cools the heat around Fusing unit.

Switch

SW1 Power

Supplies power to the machine If this is turned off, no power will be supplied to the machine (Located on the bottom right on the back of the machine)

SW2 Front Cover

Detects opening of front cover and isolates +3.3VLD and +24V dc power line.

Sensor

Symbol Name Function

S1 Paper feed When printing, detects paper entrance and allows images to be formed on OPC drum. Detects misfeed/paper jam

S2 Feeder Empty When there’s no paper on the tray, it is not if ied to CPU.

S3 Bypass tray Empty When there’s no paper on the bypass tray, it is notified to CPU.

S4 Paper Feed Detects paper jam

Symbol Name Function

PCBs

PCB1 System Directly and indirectly controls all applicat ions via other control boards.

PCB2 PDU (Power supply unit) Supplies AC power to Fusing lamp and opt ical heater and DC power to the system.

Solenoid

SOL1 Tray feeding Controls Tray’s feeder roller operat ion

SOL2 Bypass tray feeding Controls paper bypass tray’s feeder roller operation

SOL3 Duplex Unit Controls Duplex Unit’s operat ion

Lamp

L1 Fusing Lamp Applies heat to Hot Roller.

Others

TS1

Thermostat When Fusing unit is overheated, the Fusing Lamp circuit gets opened

(Located on top of Fusing Hot roller)

TH1

Thermistor Detects temperature of Hot roller.

(Located on top of Fusing Hot roller)

Drive Chain

1. Main Motor 2. Tray Feed Solenoid 3. Bypass Tray feeding solenoid

Main Driving Gear Units

Main Driving Gear Unit Components

The machine has one main motor and the rotat ion of this motor is delivered to the train of gears composed with various gears to operate developer/drum, bypass tray, Fusing unit, duplex unit, Registrat ion roller and pickup roller.

Installing/Removing Image Cartridge

1. Opening Front Cover

Operate Developer Operate Fusing Unit

Operate Duplex unit

Operate Drum

Operate Registration Roller

Operate Pickup Roller

Bridge Roller

Operate Multipurpose Tray

When machine’s front door is opened, the link connected to the front door moves to the posit ion 1. The guide lever rotates as 2 by moving link and pulls coupler to 3 direct ion on the rail to disconnect from image cartridge. 2, Closing Front Cover

When closing the front door, the link connected to the front door moves to the posit ion 1 and the connected guide lever rotates to 2 direct ion. When the guide lever rotates and goes down on the rail, the coupler returns to 3 direct ion by spring and connects with image cartridge.

Removing Fusing Unit Paper Jam

1. Removing paper on the back of Fusing unit

The gear link gets pushed back and disconnects gear connection and allows it to remove jammed paper. 2. Removing paper on the front of Fusing unit

When front door is opened, gears are disconnected by the link connected with front door and allow it to remove paper easily.

Remove

paper

Remove

paper

Front door open

Remove

paper

Laser Unit

Structure and Optical System Path

< L/LF MODEL>

A : Laser Diode Unit F : Synchro Reflect ion Mirror

B : Collimator Lens Unit G : Synchro Detect Lens

C : Cylindrical Lens H : Synchro Detect Sensor

D : Polygon Mirror Motor J : #2 F-theta lens

E : #1 F-theta lens K : Reflect ion Mirror

<MF/HF MODEL>

A : Laser Diode Unit F : Synchro Reflect ion Mirror

B : Collimator Lens Unit G : Synchro Detect Sensor

C : Cylindrical Lens H : #2 F-theta lens

D : Polygon Mirror Motor I : Reflect ion Mirror

E : #1 F-theta lens J : OPC Drum

Laser Diode Unit: Generates laser beam Collimator lens: Converts dispersed laser beams to straight beam Cylindrical Lens: Directs laser to one point Polygon Motor: Alters laser’s direct ion to main direct ion #1 & #2 F-theta lenses: Alters laser angle to be scanned equally on drum surface Reflect ion Mirror: Alters laser’s direct ion Synchro Detect Sensor: Determines the scan start ing posit ion

AIO Cartridge

Overview

Image cartridge is composed with drum cartridge and toner cartridge as above figure and it can be separated. Drum’s life Cycle is 34K with 5% chart as base and toner cartridge of enclosed one is 2.5K for M401/M402/M403, and for AM is all 2.5K/5K/8.5k. Drum cartridge does not have a separate chip, but toner cartridge has a separate information chip to store toner counter and manufacturer information and the machine refers to the information on the chip to determine toner replacing period and auto toner counter reset.

Drum Cartridge Toner Cartridge

Drum Cartridge Components

Drum cartridge has drum, electrificat ion roller and cleaning blade along with used toner bottle.

Toner Cartridge Components

Toner cartridge is composed with development roller, add roller and doctor blade as above figure and has a paddle roller carrying toner to add roller. Doctor blade allows toner supplied to development roller surface by add roller to be applied equally on the development roller.

Electrif ication Roller(φ12)

Used Toner bottle

Development Roller

Drum Cartridge Drive

Drum cartridge’s drum rotates by delivering the motor’s driving force generated by the rotat ion of main motor (A) to drum (C) via drum driving gear (B).

Toner Cartridge Drive

The driving force of main motor (A) is delivered to development coupler driving gear (B) via serial train of gears attached on the left frame of the machine to rotate the coupler rod (C) and this allows the driving force of main motor to be finally delivered to Idle coupler gear (D) on toner cartridge. With the driving force delivered Idle coupler gear’s rotat ion, the attached development roller, Add roller and Paddle roller get rotated.

Drum Cartridge’s Applied Voltage

Electrification voltage of -1650V is applied to the electrification roller (I) contacting Drum (C).

The charged voltage is applied to the cleaning blade BKT (F) via electrification voltage applied spring (D) and electrification voltage applied plate (E), and this applied voltage is delivered to electrification roller again via electrification roller spring (G) and conductive roller bushing (H). Drum surface gets charged with about -1100V with this electrification voltage.

Also, -200V of core voltage is applied to drum and this voltage is delivered to drum surface via drum voltage applied spring (A) and Drum shaft (B) from HVPS. This core voltage is applied to give more smooth image on half-tone images and somewhat prevents dual image occurrences due to remaining toner without a separate per-transfer lamp.

Toner Cartridge’s Applied Voltage

Three types of voltages are applied to a toner cartridge. The necessary voltage is applied to development roller via develop voltage applied spring (A) and development roller plate (D), and to add roller via add voltage applied spring (B) and add roller plate (E), and to doctor blade via DB voltage applied spring (C) and DB plate (F).

Toner Cartridge and Drum Unit Replacement

Drum Unit

Drum unit has a life Cycle of A4 with 5% chart as base and the machine displays “DRUM CARTRIDGE CHANGE” message to notify the user to replace the drum unit when it exceeds 34,000 sheets by calculating LSU dot count or drum rotation, but it still can print even if it is not replaced with a new drum unit. But the image quality cannot be guaranteed.

As like the toner cartridge, the drum unit has a chip installed to record model information, sheet usage for enclosed or AM drum unit and recycle information.

Toner Cartridge

As like the drum unit, the toner calculates LSU dot count or drum rotation with A4 with 5% chart as base and when 2.2K sheets 2.5K toner and 4.5K/7.5K sheets for 5K/8K toner are reached, the Toner Low message is notified to the user to replace it.

When this message appears, print ing can continue, but for 2.5K, the Toner END occurs with 5% chart as base to have no more printouts and it needs to be replaced with a new toner cartridge. And also, toners for 2.5K/5K/8K will have Toner END occurrences when continue to make printouts after Toner Low to unable to use.

Paper Feed

Overview The printer is installed with a 250 sheets of A4/LT cassette Tray with 75gsm as base and a bypass tray as the base and 250 sheets feeding unit can be added optionally. A frict ion pad method is used as paper separating method for main tray and a paper detect ing sensor is mounted to determine paper presence, but a separate auto paper size detect ing sensor is not installed, which allows the printer to detect the paper size by on-off t iming of Registrat ion sensor. When loading papers to main tray, adjust the side fences and rear fence to not to have gaps in the cassette. For thick papers (28lb, 105g/m2) and special papers, there is a load limit line indicat ion.

Main Tray Components and Feeding and Isolating Mechanism

Main Tray is composed with the following 6 components and rolls of each component are as the followings.

1) Base Plate: It is in the cassette tray loading papers and applies appropriate pressure between roller and paper by picking the paper loaded in the tray with main body’s pickup roller.

2) Left and Right Side Fences: Aligns the loaded papers to its size. 3) Rear Fence: Aligns the rear side of loaded papers to its size. Move the rear fence lever to adjust. 4) Rear Fence Expanding Lever: Use it to expand the rear fence when loading legal papers. 5) Isolat ion Frict ion Pad Assy: Isolates the papers fed from the tray one by one 6) Base Plate Pad: It holds the bottom paper to allow papers not to be fed more than 2 when

there’s small amount of papers in the tray.

Main Body’s Pickup Part Components and Driving Mechanism

Main Tray is composed with the following 6 components and rolls of each component are as the followings.

1) Pickup Roller: It picks the paper up by using tray’s feeding pressure. 2) Pickup roller Idler: It is at the both sides of pickup roller to reduce resistances from paper transfer

and contacts with feeder frict ion pad on pickup stand-by mode. 3) Pickup Shaft: It delivers the operation from segment gear to the pickup roller. 4) Pickup Roller Bushing: It holds the pickup roller’s posit ion from both ends of pickup roller. 5) Pickup Solenoid: Pickup solenoid operates per feed t iming to connect operation with pickup roller. 6) Segment Gear Assy: Some gear teeth are missing to disconnect the operation of main operation

and pickup roller’s operation at Pickup roller’s Home-Posit ion.

Left Side Fence

Base Plate

Rear Fence Expanding Lever

Rear Fence

Right Side Fence

Base Plate Pad

Isolation Friction Pad

Segment Gear Assy

Pickup Shaft

Pickup Roller

Pickup Roller Idler

Pickup Roller Bushing

Pickup Solenoid

Main Motor

Main Paper Feeder Drive

When cassette tray is opened and paper is loaded and the tray is closed, the base plate gets unlocked to lift the papers toward pickup roller (D-roller) and enables feeding stand-by status. When feeding signal is sent from the machine, solenoid is operated and segment gear gets unlocked to rotate pickup roller to picks up the paper on top in the tray to the machine. At here, the paper fed by the feeding pressure between pickup roller and base plate is fed one by one with the frict ion from the frict ion pad. Paper is fed to return roller when pickup roller rotates once and the paper after that goes through return roller and Registrat ion roller for feeding. When the pickup roller rotated once due to paper or other feeding condit ion, but paper was not fed to return roller, the pickup roller rotates once more to pick up paper. When all loaded papers were used, the paper detect ing sensor detects it and indicates that all papers have been used.

Solenoid

Driving Gear

Segment Gear

Friction Pad

Base Plate Pad

Side Fence/Rear Fence Operation

Hold right side fence lever and right side fence to move the side fence. Load papers up to the paper load limit on the side fence. Especially, the preprinted papers can be categorized as special papers due to paper’s curls.

Hold rear fence lever to move the rear fence. Especially, for Legal papers, the rear fence need to be expanded and for such case, expand the rear fence expand lever to Legal size. When loading A5~A4 papers, reset the expand lever and move the expanded rear fence walls to inside.

Left Side Fence Lever

Plain Paper Load Limit

Special Paper Load Limit (Thick papers, Labels)

No Paper Detection

When all the papers loaded in the cassette tray were used, the paper detect sensor flag drops on to the base plate’s slit and light from the sensor flag gets blocked to alter the sensor’s output value. The printer detects paper presence with this sensor’s output value.

Paper Jam Detection

When input sensor was not turned on within a certain time after one pickup roller rotat ion, the pickup roller rotates once more. After 2 pickup roller rotat ion and paper cannot turn the input sensor on, the machine determines it as paper jam or miss-feed and it is notified to the user. Also, the machine does not have an automatic paper size detect ion sensor and it detects paper size with Registrat ion sensor’s on-off t iming on feeding and when this detected paper size does not match with the paper size set from PC, paper jam will occur as well.

End Detection Flag

Base Plate Slit

Paper Size Detection

As M400 does not have size detect ion sensor, user need to configure it from driver.

MPT(Multipurpose Tray)

Overview

A MPT with A4/LT 50 sheets of 75gsm base is installed on the printer as default. A friction pad method is used as paper separating method for MPT as like main tray and a paper detecting sensor is mounted to determine paper presence, but a separate auto paper size detecting sensor is not installed, which allows the printer to detect the paper size by on-off timing of Registration sensor. When loading papers to MPT, expand the extension all the way and adjust side fences to the paper size to have no gaps. Paper load limit lines are marked separately for postcards, envelops, labels and other special papers.

MPT Components

MPT Cam

MPT Extension

MPT Cover MPT Side Fence

MPT Base Plate

MPT Pickup Roller

MPT is composed with the following 6 components and rolls of each component are as the followings. 1) MPT A’ssy: Composed with MPT cover, base plate and extension. 2) MPT Cam: Links with the MPT pickup roller and pickup roller 3) Lower Body and Upper Guide: Act a guide on paper feeding 4) Solenoid and Segment Gear A’ssy: Delivers or isolates power to MPT pickup roller 5) Frict ion Pad: Prevent mult iple paper feeding 6) Paper Load Detect Sensor: Detects paper presence in the tray

MPT Drive

MPT can load 50 sheets of plain paper, and when MPT is opened to load papers, the base plate goes

down by cam and isolates with pickup roller for easy paper loading.

When loading papers, pull the extension out all the way and load papers less than 50 sheets on the tray

and adjust side fences to not to have papers move around.

When feed signal is sent, solenoid gets operated to disable segment gear and delivers power from main

motor to MPT’s pickup roller. Therefore, when the cam that operates with MPT’s pickup roller rotat ion

rotates, the base plate rises by base plate spring to generate feeding force by contact ing loaded paper

with pickup roller and allows loaded paper to be fed in orders from top by pickup roller’s rotat ion.

Side Fence

Base Plate Spring

Segment Gear

Solenoid

Base Plate (Tray)

Pickup Roller

Isolation Pad

MPT Cam

When the pickup roller rotates once, the segment gear works with solenoid to isolate power from main motor and the pickup roller stops its rotat ion to lower MPT base plate to init ial position.

The frict ion pad isolat ion method is used for paper isolat ion method and papers get isolated one by one

with frict ion pad’s resistance force and frict ion pad spring’s pressure.

Paper presence detect sensor is installed, so, when all papers in the tray is used, MPT detects it and

stops feeding operation.

As there is no paper size detect sensor, the user must assign the paper size from printer driver and if the

paper size assigned from driver does not match with paper loaded in the tray, a paper jam will occur.

No Paper in MPT Detection

When papers are loaded on MPT, the sensor flag gets pressed and acknowledges paper presence and when all loaded papers are used, the paper presence detect sensor at the bottom body ASSY returns to init ial posit ion by torsion sprint for sensor flag to isolate the light and causing the sensor’s output value to change. The printer detects paper presence with this sensor’s output value.

Sensor Flag

Sensor

Torsion Spring

Paper Jam Detection

When the input sensor does not get turned on by the feeding paper tray within certain time after bypass tray’s pickup roller rotates once, the machine operates pickup roller up to 3 times. But when input sensor was not turned on by paper even after the 3 pickup roller operat ions, the machine will display miss-feed. Also, the machine does not have an automatic paper size detect ion sensor and it detects paper size with input sensor’s on-off t iming on feeding and when this detected paper size does not match with the paper size set from PC, paper jam will occur as well.

Duplex Unit Components

Duplex Unit is composed with below 3 bodies and roles of each part are as the followings. 1) Upper Body: It works as upper rib to make the papers to through smoothly as main function

and compensates skew partially by having one roller. 2) Front Body: It works as a guide to move the papers to EP frame. And supports base body with a

fixture using spring.

Front Body Upper Body

Base Body

3) Base Body: It compensates skew to print the paper (regardless of A4 or letter) fed by 3 mounted rollers in parallel.

Duplex Unit Drive

Duplex Unit is connected with main drive and gears, and papers are fed to base body with reverse method of pick-a-boo method. The paper is re aligned to left by t ilted roller in reverse area. (Regardless of letter or A4)

Paper Jam Detection

When a paper jam occurs at reverse area of duplex unit, remove the tray first and press handles down to disengage base body to remove paper jam in the unit.

Lift handle up to close

Press handle down to open

Duplex Unit Paper Path

When print ing 2 sides, the paper proceeds to printer’s simplex sect ion first by pickup roller to print front side. The front side printed paper passes Fusing unit and goes to delivery roller and the solenoid operates forward/reverse bracket and the roller turns reverse allowing the paper to be transferred to Duplex Unit’s duplex sect ion. The paper transferred to duplex sect ion again passes simplex sect ion and at here, the backside of the paper gets printed and finally goes to bin tray through the roller.

Simplex Section Duplex Reverse Section

Registration Unit

Registrat ion Unit aligns the papers fed from feeder to not to have skew occurrences when print ing image to the paper.

Registration Unit Components

Registrat ion Unit is composed with the following 3 components. 1) Registrat ion driving roller 2) Top Registrat ion guide and pressure backup roller 3) Registrat ion dam and spring to align paper

Registration Unit Drive

When a paper is fed from main tray or bypass tray, the paper enters into Registration unit by the guide and the paper temporarily gets stopped by Registration dam. The feeding got suspended by Registrat ion dam, but the paper gets transferred by pickup roller’s rotat ion and at here, top part of paper gets a slight curl with this rotat ion and suspension and during this operation, the paper gets aligned. The paper with curl on the top pushes Registrat ion dam when it gets pressure over a certain pressure continuously and when the dam gets unlocked by it, the top of the paper get caught between Registrat ion driving roller and backup roller to transfer the paper into the printer.

Top Registration Guide

Registration Dam Paper Feeding Direction

Image Fusing

Overview

Fusing Unit Components

Fusing Unit and paper discharge unit are composed with following components.

1. Fuser Roller

2. Pressure Roller

3. Heater

4. THERMOSTAT

5. THERMISTOR

6. Separator

7. Entrance Guide

8. Exit Guide

9. Exit Sensor

10. IDLE Roller

11. Cleaning Roller

Fusing Temperature Control

The Fusing heater is turned on right after main power switch is turned on.

When there’s no output signal on main motor operation at 100˚C, 160˚C READY status is maintained.

When output signal is sent, the Fusing temperature maintains 180˚C and settles to paper.

(180˚C is default value for Plain papers)

Fusing temperature is configured differently for each paper, but the Fusing temperature can be changed within a certain range when the user desires.

Overheat Prevention

When Fusing Roller’s temperature rises higher than 230˚C, CPU isolates Fusing Lamp’s power and indicates an error at same time.

160℃

To be prepared for failure of overheat prevention by thermistor, there are thermostat and thermal cut off installed parallel to Fusing Lamp’s general grounding cable.

Thermal cut off is a dual safety device, which is installed additionally to prevent overheat when thermostat does not function.

Thermostat and thermal cut off get operated when Fusing temperature gets overheated to isolate power applied to Fusing lamp and indicate an error at the same time to stop the machine operation.

Delivery Unit

Overview

The unit that transfers the papers delivered via Fusing unit lastly to get the papers to stacked on bin tray on the top of the printer and for the models with duplex unit, it also rotates in reverse for duplex unit’s operation. As there is no paper full detect ion sensor that can prevent paper jam by having papers over a certain height, a paper jam or paper falling may occur when there are papers over certain amount of sheets (150 sheets of base paper and standard environment). When paper jam occurs and if paper is behind the Fusing unit, open the delivery cover and remove the jammed paper.

Delivery Unit Components

Delivery unit is composed with the following 13 components and rolls of each component are as the followings.

1) Delivery Frame: Other parts of delivery components are assembled and performs a role as a guide on paper print side

2) Large Delivery Gear: Delivers power from Fusing gear to no. 3 small delivery gear. 3) Small Delivery Gear: The gear delivering rotat ion force lastly to the delivery shaft. 4) Forward/Reverse Bracket: The function to control delivery shaft’s rotat ion by moving posit ion

with solenoid operation 5) Bracket Spring: When there’s no solenoid operat ion, it locates no. 4 bracket to rotate delivery

shaft to forward direct ion. 6) Gear Bracket: Fixates large and small delivery gears and forward/reverse bracket. 7) Bracket Fusing screw 8) Delivery Shaft Support: Delivery shaft gets weight from idle roller assemble to laser cover in

lower direct ion and the support prevent it from dropping.

9) Delivery Shaft: Rubber roll and kicker are assembled and connects to rotate 10) Rubber Roller: It’s not delivery shaft built-in, but an assembly type that gives moving force to

papers by working with idle roller assembled to laser cover. 11) Kicker: It performs a funct ion to push backside of paper to get paper discharged completely. 12) Bushing: It reduces frict ion force of rotat ion part of delivery shaft 13) Shaft Gear: It delivers rotat ion force to delivery shaft from small delivery gear.

Delivery Unit Drive

The papers passed through Fusing unit get transferred to paper proceeding direction by Fusing roller. The paper fed to Fusing unit first goes through middle delivery shaft and to delivery shaft and the paper transferred to the shaft and get discharged through Fusing roller and middle shaft that rotates by delivery shaft. Each shaft always rotates together with main motor operation and allows paper to move. 2 and 4 rubber rollers are assembled on middle delivery shaft and delivery shaft and the rubber rollers are paired with idle rollers. Each idle roller pressed against rubber rollers by springs to apply frict ion force on papers to move.

Delivery Forwarding and Reversing (Duplex Unit Drive)

Main Driving Motor on main body always moves forward and the rotat ion force of main driving motor is delivered to delivery shaft through delivery unit’s Fusing driving gear to rotate delivery shaft. As Fusing driving gear always rotates forward, in order to print 2 sides by reversing delivery unit, the forward/reverse bracket is operated by solenoid operation. Below figure on the left shows that solenoid is turned off when rotat ing forward and 4 gears are connected to rotate delivery shaft rotat ing forward. The right figure shows that solenoid is turned on and 5 gears are connected to Fusing driving gear to convert rotat ion in reverse.

Forward Rotation Reverse Rotation

Delivery Shaft

Idle Roller

Rubber Roller

Middle Delivery Shaft

Solenoid Operation Status

Fusing Driving Gear Fusing Driving Gear

Understanding Control Panel

Overview

M401/M402/M403 control panel is composed with LCD, 27 buttons and 1 status notification LED and lamps on 8 buttons (copy, scan, fax, dial, redial, A3/11x17, start, power key) get turned on. M400 control panel is composed with LCD, 11 buttons and 1 status notification LED and lamps on 4 buttons (copy, scan, start, power key) get turned on.

Flatbed Scanner

Overview

Flatbed Scanner (hereinafter called Scanner) reads images and converts them into electrical signals. Scanner is composed with document sitting Contact Glass & supporting scan cover ASSY, CIS ASSY, Drive ASSY and the scan frame ASSY supporting them. Also, presence of slit glass on scanner is determined by the presence of ADF on top of scanner, which distinguishes 3-in-1 model (no slit glass) and other scanners. OP ASSY is assembled and mounted on the front of entire ASSY. CIS ASSY has used CIS instead of reduction optical system (CCD module) that uses lens to reduce machine’s size, the scanner’s thickness, and was able to lower its price. CIS optical system has compact design and low price, but the depth of field gets significantly smaller than reduction optical system, which has a disadvantage of having unclear scan image on glass not contact ing parts.

<4-in-1 Scan Cover ASSY>

Scan Cover ASSY

Drive ASSY Contact Image Sensor (CIS)

Scan Frame ASSY

<3-in-1 Scan Cover ASSY>

Scan Cover ASSY Components

Scan cover ASSY is composed with entire cover support ing scan cover, document holding glass and various double sided tapes gluing them t ightly. Slit glass is added to default scan cover ASSY components for ADF mounted models and the heights of slit glass and contact glass must be equal from flat bed scan and get identical image quality on ADF scan Also, there should be no gaps between slit glass and contact glass to move smoothly on CIS operation.

CIS ASSY Components

Calibration Strip

Calibration Strip

Scan Frame

CIS Guide

CIS Spring

CIS Frame

Frame Sub

CIS ASSY is composed with CIS frame & CIS, spring pressing CIS to glass, side end wheel & guide enabling ASSY to move smoothly and frame sub part that adhere with rail. If CIS ASSY is not assembled properly, a problem may occur during CIS operation on image scanning, which can cause image quality to decline. Also, flat bed scan skew may occur depending on how frame sub and CIS frame are assembled and in reverse, skew adjustment is somewhat possible by adjust ing assembly of two part when skew occurs.

Drive ASSY Components

Drive ASSY is composed with motor, bracket, dampers isolat ing the motor vibrat ion, one driving gear reducing rotat ion, t iming belt delivering driving force to CIS ASSY, belt pulley, pulley housing and spring giving tension to t iming belt. In order to eliminate noises due to resonance from certain speed on operation, move the resonance sect ion by adjust ing t iming belt’s spring and CIS spring tension to adjust entire system’s tension.

Damper

Motor Bracket

Driving Gear

Motor

Timing Belt

Pulley Housing

Spring

Belt Pulley

Scan Frame ASSY Components

Scan frame ASSY supports each above ASSY and also flat cable from CIS, USB port, harness connecting with photo-sensor and OP harness are placed.

CIS Drive

CIS operation is required for ADF scan or flat bed scan. When the motor rotates, t iming belt moves by torque and rotat ion via gears through gear pulley connected with driving gear. Timing belt is connected to CIS frame and posit ion of CIS is adjusted with t iming belt’s movement. Home posit ion of CIS is defined by a certain part of CIS frame react ing photo-sensor and transfers a certain distance from this home posit ion to move CIS to ADF scan posit ion or perform flat bed scan.

Side USB Port

Mount Position

Drive ASSY

Photo-sensor

Mount Position

Flat Cable

Timing Belt

CIS Transfer

Direction

Driving Gear

Motor

Photo-sensor

Photo-sensor Operation

Rib (Home Position)

Optical System

Reduction optical system through lens composes optical system composed with various mirrors & lenses, illuminator and imaging system to implement conjugate field of configured lens in a space. In comparison, CIS is composed as one part with lens, imaging system (imaging sensor) and illuminator. Also, in comparison to forming the reduced image information read from one line of main scanning direct ion on scanning sensor, CIS forms images on serial sensors of corresponding point’s images to scan. Also, color scanner’s reduction optical system reflects white lights from illuminator to paper and scans information of each color with image information formed on each channel with these reflect ions via optical paths, but for CIS, illuminator lights each color channel to have one sensor to read the reflected lights from document to define colors of each channel.

Illuminator Scanning Point

Sensor

ADF (Auto Document Feeder)

Overview

ADF’s Side Fences

ADF’s Top Cover ADF’s Rear Cover

ADF’s Document Tray

ADF’s Front Cover

ADF’s Main Frame

ADF’s Top Guide

ADF’s Pressure Plate

ADF’s Left Hinge ADF’s Back Plate

ADF’s A3 Roller ADF’s Right Hinge

Auto Document Feeder (hereinafter called ADF) is a device scanning documents by automatically feeding and delivering loaded documents on tray. ADF is composed with document placing tray ASSY, tray protect ing & init ial delivery handling top cover ASSY, main delivery handling top guide ASSY, operation motor ASSY and ADF frame ASSY support ing them. Also, A3 scan handling A3 scan ASSY and covers covering this ASSY. And there are hinges, which allows ADF to close when ADF is opened and ADF is lifted while copying a book.

ADF’s Top Cover ASSY Components

ADF’s top cover ASSY is mounted with idle roller that protects feeder and the start of delivery. Also, feeding and init ial paper jam on delivery can be removed by opening the top cover. The paper size checking mark is imprinted on top of the top cover to help users for scanning and copying.

ADF’s Top Cover

ADF’s Top Cover

Idle Roller

ADF’s Top Cover

Idle Spring

ADF’s Top Cover

Idle Shaft

Pick Up ASSY Components

Pick up ASSY is an ASSY feeding the documents set on tray by user to inside of ADF. Pick up ASSY can be divided with pick roller, feed roller and mounting pick up holder along with pick up shaft operating them. Life Cycle of Pick up ASSY is identical with ADF’s life Cycle. Pick up ASSY has mount and removal funct ions to remove paper jam.

Tray ASSY Components

Pick Up Holder

Feed Roller

Pick Up Shaft

Feed Roller

Side Fence

Pinion Gear

Isolation Pad ASSY

Rear Fence

Front Fence

Document Tray

Tray ASSY is divided into paper sett ing feeder and paper feeding and isolat ing part. Side fences on the paper sett ing tray are assembled with a pinion gear of front and rear fences to adjust these fences equally. Feeding and isolat ion sect ion is assembled with isolat ion pad ASSY to separate papers. This isolat ion pad ASSY maintains isolat ion force with springs (compression).

Motor ASSY Components

Motor ASSY BKT

Pick Drive Shaft

ADF Motor

Motor ASSY is assembled with ADF’s Driving Gears. It is composed with motor, R1 gear, pickup gear, delivery gear and A3 driving gear and each gear are connected with each idle gear. Also, a holder gear ASSY is connected to a motor pinion gear to operate this driving gear. Gear exit idle forms pulley shape to operate A3 by mounting t iming belt.

Top Guide ASSY Components

ASSY Sensor

SB2 Sensor Actuator

R1 Roller

Idle Guide

SB1 Sensor Actuator

Delivery Roller Top Guide

Pressure Plate

Top guide ASSY is mounted with paper transfer related rollers of R1 and delivery rollers. Tray is composed with SB1 sensor detect ing papers on document sett ing and SB2 sensor detect ing papers on feeding. And ASSY 1st idle guide work as a guide while moving papers to scan point is mounted.

A3 ASSY Components

A3 ASSY performs A3 scanning and copying by receiving power from delivery idle gear’s pulley from motor ASSY via t iming belt. A clutch is mounted to prevent A3 malfunction on ADF feeding and use ADF power only on A3 operation. Also, bevel gear is used as to alter rotat ion axis to perform A3 works.

A3 Timing Belt

A3 Clutch ASSY

A3 Clutch

A3 Bevel Gear

A3 Roller

A3 Guide

Front Part Overview

System Card Components and Main Functions

Structure’s Block Diagram

Components and Basic Functions

System card is composed with above figure structure and main functions are as the followings. Main Functions of SOC (DC1250) It controls entire program flow by reading execution codes from flash memory (serial and NAND

flash). It controls image handling part that handles images by reading the document. DD2 memory controller is built in to support maximum of 128M capacity and DD2-400 speed. It controls various motors. A programmable timer for CIS Scanner I/F control is built-in. Pixel output control logic is configured for LSU Control. It performs UART communication with Control Panel to accept user input and express status.

It performs UART_SPI communication for fax transmission. It performs I2C communication with optional tray. USB I/F controller is built in to transmit information with PC and accessories.

Main Functions of DC_DC Converter Prefixed and Adjustable can be selected with 3-channel switching voltage output. Power sequence function implementation for SOC POR is possible. Output power peek current limit setting is possible. Main Functions of Scan Image Handling Document Scan Speed: 1.2ms/Line (Color), 0.6ms/Line (Mono) Shading Correction Gamma Correction Half-tone Mode Function (Threshold, Error Diffusion)

Pin Array 1. SYSTEMCARD-SMART_IC (CN2) NO. Signal Descript ion

1 +3.3V +3.3V power

2 I2C_DAT Transmit data with SMART IC

3 I2C_CLK Data transmitting standard clock

4 GND GND

2. SYSTEMCARD-CANON CIS (CN3) NO. Signal Descript ion

1 COM1 GND

2 CIS_RED For RED_LED Operation – Current Signal

3 CIS_GREEN For GREEN_LED Operation – Current Signal

4 CIS_BLUE For BLUE_LED Operation – Current Signal

5 CIS_LED_Anode For LED Operation + Current Signal

6 CIS_SP Line unit control signal on CIS data output

7 +3.3VAS CIS_VCC

8 CIS_CLK Image data output synchronization clock

9 COM2 Analog ground

10 CIS_VREF CIS VREF power input signal 11 CIS_MODE CIS MODE selection signal 12 VOUT CIS output signal

3. SYSTEMCARD-ATII CIS (CN4) NO. Signal Descript ion

1 COM1 GND

2 CIS_RED For RED_LED Operation – Current Signal 3 CIS_GREEN For GREEN_LED Operation – Current Signal 4 CIS_BLUE For BLUE_LED Operation – Current Signal 5 CIS_LED_Anode For LED Operation + Current Signal 6 CIS_CLK Image data output synchronization clock 7 CIS_SP Line unit control signal on CIS data output 8 CIS_VREF CIS VREF power input signal 9 +3.3VAS CIS_VCC 10 COM2 Analog ground 11 CIS_MODE CIS MODE selection signal 12 VOUT CIS output signal

4. SYSTEMCARD-BLDC_MOTOR (CN41) NO. Signal Descript ion

1 S.GND SIGNAL GND

2 BLDC_FG F/B signal to confirm motor rotation standard 3 BLDC_CLK Standard clock supplied to motor 4 BLDC_ST Motor ON signal 5 BLDC_LD Configured RPM reception detection 6 P.GND POWER GND

7 24V +24V power 8 3.3V +3.3V power 9 CW_nCCW Rotation Direction Setting Signal

5. SYSTEMCARD-FLATBED MOTOR (CN7) NO. Signal Descript ion

1 AOUT1 FB Motor’s A phase 2 AOUT2 FB Motor’s /A phase 3 BOUT1 FB Motor’s B phase 4 BOUT2 FB Motor’s /B phase

6. SYSTEMCARD-LSU (CN11) NO. Signal Descript ion

1 nHSYNC_H Synchronization detection signal 2 GND GND

3 +5SW LSU_Power 4 nSH_H SAMPLING & HOLD

5 nLDEN_H Laser Diode enable Signal 6 nVIDEO_H Image data signal 7 GND GND

7. SYSTEMCARD- POLYGON MOTOR (CN8) NO. Signal Descript ion

1 nLSU_CLK_H Standard clock supplied to polygon motor 2 nREADY_H Polygon motor constant speed reaching signal 3 nSTART_H Polygon motor’s start signal 4 GND GND

5 +24V +24V power

8. SYSTEMCARD-LSU_2BEAM (CN48) NO. Signal Descript ion

1 COM1 GND

2 nHSYNC_H Synchronization detection signal 3 COM1 GND

4 +5SW LSU_Power 5 +5SW LSU_Power 6 COM1 GND

7 DT1P LD1 image data LVDS + Differential signal 8 DT1N LD1 image data LVDS - Differential signal

9 COM1 GND

10 DT2P LD2 image data LVDS + Differential signal 11 DT2N LD2 image data LVDS - Differential signal 12 COM1 GND

13 SHK1 LD1 AUTO Power Control signal 14 SHK2 LD2 AUTO Power Control signal 15 ENBK Laser Diode enable signal 16 VREF_K1 LD1 luminous energy setting VREF1 power 17 VREF_K2 LD2 luminous energy setting VREF2 power 18 COM1 GND

9. SYSTEMCARD-HVPS & LVPS IF (CN40) NO. Signal Descript ion

1 TX_SENSING Transfer F/B signal 2 TX_ENB Transfer Enable signal 3 TX_PWM Transfer output signal 4 CHGPWM Electrification output signal 5 DEVPWM Development output signal 6 +24V HVPS supply +24V power 7 COM1 GND

8 +24V PDU +24V supply power 9 +24V PDU +24V supply power 10 COM1 GND

11 COM1 GND

12 +5VIN PDU +5V supply power 13 COM1 GND

14 HR_PSU Fusing heater On/Off control signal

10. SYSTEMCARD-THEMISTER & Fuser Exit_S (CN13) NO. Signal Descript ion

1 THERMISTER Fusing temperature F/B signal 2 COM1 GND

3 FUSER_EXIT_S Record delivery sensor detect signal 4 COM1 GND

5 +5V_UICC_S Sensor Power

11. SYSTEMCARD-UICC (CN30) NO. Signal Descript ion

1 +5V_UICC_S Sensor Power 2 COM1 GND

3 RXD2 Data signal from UICC 4 TXD2 Data signal to UICC 5 COM1 GND

6 LED_POWER Wakeup LED power 7 WAKE Power save disable signal

12. SYSTEMCARD-OPTION_TRAY (CN39) NO. Signal Descript ion

1 I2C_DAT Transmit data with tray 2 I2C_CLK Data transmitting standard clock 3 NOTIFY Tray set detection 4 +24VIN +24V power 5 COM1 GND

6 +5VIN +5V power 7 COM1 GND

13. SYSTEMCARD-FAX (CN16) NO. Signal Descript ion

1 FAX_CS Fax modem chip selection pin 2 COM1 GND

3 FAX_DI Data signal pin from FAX 4 COM1 GND

5 FAX_DO Data signal pin to FAX 6 COM1 GND

7 FAX_SCK FAX_SPI communication standard clock 8 COM1 GND

9 FAX_IRQ FAX interrupt signal 10 5VIN +5V

11 FAX_RESET FAX reset signal 12 3.3V +3.3V

13 3.3V +3.3V

14. SYSTEMCARD-MAIN FAN (CN25)

NO. Signal Descript ion

1 MAIN_FAN Fan operation signal 2 MAIN_FAN_BACK Configured RPM reception detection 3 COM1 GND

15. SYSTEMCARD- Micro Switch (CN42) NO. Signal Descript ion

1 24VIN 24VIN

2 24V_SW 24V_SW: 24V F/B via switch

16. SYSTEMCARD- EXIT SOL (CN26) NO. Signal Descript ion

1 24VIN 24V power 2 EXIT_SOL_L Delivery solenoid On

17. SYSTEMCARD- MPT SOL (CN27) NO. Signal Descript ion

1 24VIN 24V power 2 MPT_SOL_L Bypass solenoid On

18. SYSTEMCARD- TRAY SOL (CN28) NO. Signal Descript ion

1 24VIN 24V power

2 TRAY_SOL_L Tray solenoid ON

19. SYSTEMCARD- ADF_MOTOR & Electric clutch (CN44) NO. Signal Descript ion

1 ADF_AOUT1 ADF Motor’s A phase 2 ADF_AOUT2 ADF Motor’s /A phase 3 ADF_BOUT1 ADF Motor’s B phase 4 ADF_BOUT2 ADF Motor’s /B phase 5 24VIN 24V power 6 EC_L Electric clutch On

20. SYSTEMCARD- EMPTY_MPT_S (CN24)

NO. Signal Descript ion

1 EMPTY_S Tray paper detection signal 2 COM1 GND

3 +5V_UICC_S Sensor Power 4 MPT_S MPT paper detection signal

5 COM1 GND

6 +5V_UICC_S Sensor Power

21. SYSTEMCARD- INPUT_S (CN36)

NO. Signal Descript ion

1 INPUT_S Paper feed detection signal 2 COM1 GND

3 +5V_UICC_S Sensor Power

22. SYSTEMCARD- SB1 & SB2 _S (CN18)

NO. Signal Descript ion

1 COM1 GND

2 SB2 ADF paper feeding sensor 3 SB1 ADF paper fixing sensor 4 +5V_UICC_S Sensor Power

23. SYSTEMCARD- FB HOME_S (CN20)

NO. Signal Descript ion

1 FB_HOME_S CIS home position on FB sensor signal 2 COM1 GND

3 +5V_UICC_S Sensor Power

24. SYSTEMCARD- ADF_Cover open (CN46)

NO. Signal Descript ion

1 COM1 GND

2 ADF_Cover_SW ADF cover switch On signal

User Interface Controller Card (UICC) Components and Main Functions

Structure’s Block Diagram

< OAK UICC 4 in 1 Block Diagram>

< OAK UICC 3 in 1 Block Diagram>

Components and Basic Functions

Basic components and functions of UICC are the followings. R5F212K45DFP of MCU uses 8Mhz external clock to communicate with system card by UART.

OP panel’s keys are composed with total of 28 matrix formats.

(Exclude Wakeup button, 3in1 exclusive key: 2 keys, 4-in-1 exclusive key: 18 keys, common keys: 8 keys)

MCU and LCD module transmit signals with 4-bit parallel method.

LCD backlight is controlled by switching element.

There’s a situation recognizing function buzzer. (selection sound, incorrect input sound, error detect sound)

Entering sleep mode and returning to ready can be recognized with lighting of corresponding Wakeup_LED turned on and off.

Circuit Diagram

1. Connector Part

2. LCM Connection Part

3. Button Input

4. LED Drive sect ion - Common (status LED, backlight LED control)

- LED for 4-in-1

- LED for 3-in-1

5. Buzzer controller

Pin Array

1. UICC- SYSTEMCARD (CN1) NO. Signal Description

1 +5V 5V input power 2 COM1 GND

3 TX Data signal to systemcard 4 RX Data signal from systemcard 5 COM1 GND

6 WAKEUP_LED Wakeup LED power 7 WAKEUP_BTN Power save disable signal

2. UICC- Character LCM (FFC2) NO. Signal Description

1 RESET LCM reset pin 2 RS Registration selection

H: Data Registration; L: Instruction Registration

3 CSB Select a chip from parallel mode and serial interface (low active) 4 R/W Read / Write selection pin (L: Write, H: Read) 5 E Starts data read/write

6 DB4 Data bus 7 DB5 Data bus 8 DB6 Data bus 9 DB7 Data bus

10 VSS GND

11 VDD 2.7-5.5V input power (5V input) 12 PSB Data transmitting method selection (0: serial, 1: parallel (4/8 bit)) 13 PSI2B ITO option (I2C communication related mode selection) 14 V0 LCD operation input bias voltage: +5.0V 15 A LED backlight anode

16 K LED backlight cathode

FAX Components and Main Functions

Structure’s Block Diagram

Components and Basic Functions

FAX card (SSF336) is composed as above figure’s structure. FAX card connectable lines are PSTN(Public Switched Telephone Network), PABX (Private Automatic Branch Exchange). Main funct ions are as the followings. Main Functions of HSD (CX95110) Modem speed is maximum of 33600bps as priority and when limiting it, speed is lowered

automatically to set to suitable speed. SPI communication is performed to communicate with controller. Digital signal converted from DAA is sent to HSD via DIB and HSD handles digital signals and sent

to MFP controller via SPI communication to proceed with imaging. PWM (Pulse Width Modulation) signal is sent to activate Speaker Driver. Main Functions of LSD (DAA CX20548)

RING’s analog signals received from TEL line are converted to digital signals. HSD’s digital signal is converted to an analog signal to send fax via TEL line. Power, clock and duplex data are exchanged between DAA and modem through DIB.

Pin Array

1. FAX-SYSTEMCARD (CN2)

NO. Signal Description

1 FAX_CS Fax modem chip selection pin 2 COM1 GND

3 FAX_DI Data signal pin to systemcard 4 COM1 GND

5 FAX_DO Data signal pin from systemcard 6 COM1 GND

7 FAX_SCK FAX_SPI communication standard clock

8 COM1 GND

9 FAX_IRQ FAX interrupt signal 10 5VIN +5V

11 FAX_RESET FAX reset signal 12 3.3V +3.3V

13 3.3V +3.3V

2. Phone line connection (J802)

NO. Signal Description

1 S.GND SIGNAL GND

2 OT_1 Signal connected with no. 9 pin 3 T_1 Ring signal 4 R_1 TIP signal 5 OR_1 Signal connected with no. 6 pin 6 OT_2 Signal connected with no. 5 pin 7 T_2 TIP signal 8 R_2 Ring signal 9 OR_2 Signal connected with no. 2 pin

LVPS Components and Main Functions

Structure’s Block Diagram ABBA PSU Block Diagram

Components and Basic Functions

Basic LVPS components are each function are as the followings. 1. AC Switch: Open only one AC line (1-Pole type) 2. Varistor: Prevent rear circuit damage by short circuit ing it when over current leads in to input 3. BRIDGE DIODE / MAIN CAP : Rect ify AC waves to DC 4. Noise Filter: Prevent noise lead in at input sect ion 5. Photocoupler: Perform feedback to maintain output constant voltage 6. Photo Triac: Control the heater in the machine to turn on and off 7. Fuse (1st & 2nd): Protect rear circuit on over current lead in

Pin Array

1. INLET + AC SW

Connector No.

Connector Name Manufacturer Image

INLET

0707-1-C7D

INALWAYS

AC SW

3024- P2T7SBKBK

(SPST) CHILY

2. Heater Connector

Connector No.

Connector Name

Pin No.

Signal Name Image

CN101

HEATER CONNECTOR

1744056-3

(AMP)

1 HEATER_L

2 (removed)

3 HEATER_N

* Spacing for no. 2 pin from total of 3 pins (to secure isolat ion distance)

3. DC Connector

Connector No.

Connector Name Pin No.

Signal Name

Image

CN201

DC CONNECTOR

1-292250-4 (AMP)

1 TX SENSING

2 TX EN

3 TX PWM

4 CHG PWM

5 DEV PWM

6 +24.5VS

7 GND

8 +24.5V

9 +24.5V

10 GND

11 GND

12 +5V

13 GND

14 HEAT ON

* Total of 14 pins composed with LVPS (7 pins) and HVPS (7 pins)

Standard

Parameter 120V

Input Frequency (nominal) Single phase, 50/60±3 Hz

Voltage Range (nominal) 110 ~ 127Vac

Voltage (min-max) 99 ~ 135Vac

*Nondestruct ive Voltage 94 ~ 146Vac

Input Current 6.5A

Input Power(full option) 650w

CH1 CH2 Heater

Voltage (V) +5.0Vdc +24.5Vdc 110V

Voltage Range

Stat ic Mutual Load Variat ion

and dynamic load variation

+4.75V~+5.25V (-5%~+5%)

+21.44V~+27.56V (-12.5%~+12.5%)

Average Load Same as above +22.78V~+26.22V (-7.0%~+7.0%)

Output Load Condition

Cover Open 0.25A 0.025A -

Energy Saver 0.1A 0.05A -

Minimum Output Current

0.25A 0.05A -

Nominal Output Current

1.2A 2.3A -

Maximum Output Current

2.0A(maintain operation for

minimum of 30 min.)

2.8A(maintain operation for minimum

of 30 min.))

-

Peek Output Current

- 5.4A -

2nd

Rush Current (Surge Current)

20A (Min. of 50uS)

Total Max. Output Power

10.0W 68.6W 750W

Static Mutual Load Variation

Condition

5V min – 24V max 5V max – 24V min

Ripple and Noise Voltage 100mVp-p 300mVp-p -

Over Voltage Within voltage range

Within voltage range -

Over Current Protection

Over current limit Fuse 6A ~ 10A -

Restorat ion Method

Fuse Exchange AC Reset -

Short circuit protect ion operat ion

Power Isolat ion Power Isolat ion -

Over Voltage Protection

Over voltage limit 7V 30V -

Restorat ion Method

AC Reset AC Reset -

* (1) Channels: 2 channels with 5V and 24V (2) Operate power isolat ion mode on OCP, OVP and other protect act ivat ions

HVPS Components and Main Functions

Structure’s Block Diagram

Pin Array Refer to DC connector parts from LVPS pin array.

Basic Functions

1. Channels: HVPS is composed with 4 DC-DC converters and with 7 channels of electrificat ion (CHG), drum

(PD), development (DEV, TR, BL) and transfer (TX+, TX-)

2. Output Characterist ics: Constant voltage method including transfer channels

3. Each of logic control is entered to each DC-DC converter and has PWM signals for converter control. Categories

CHG PD DEV TR BL -TX +TX TX-SENSING

Power Voltage

∘ +24.5V ± 12.5% (+21.44V~+27.56V)

Power Current

∘ Max. 350mA

PWM Signal

∘ Voh 5.0V Pull-up, Vol = Max. 0.8V(at Iol = 40mA, Vcc = 4.75V)

Frequency

∘ 24.41KHz ± 1KHz

Rated Output Voltage

-1690V -200V -620V DEV-180V

DEV-300V

-1350V +3000V 3.3V

Range -250V ~ -

2000V - -20V ~ -

1000V Enable -400V ~ 3500V -

Tolerance

±21V: -250V ~ -

700V ±3%: -

700V ~ -2000V

± 10V ±10V:-20V ~ -

333V ±3%: -

333V ~-1000V

±5% ±5% ±100V ±22V:-400V ~ 600V

±100V:600V~ 3500V

-

Rate Load 20MΩ ~ 1GMΩ 20MΩ ~ 1GMΩ 270MΩ ~

1GMΩ

30 MΩ ~ 1GMΩ -

Setup Output Voltage

-1690V ± 21V

-200V ± 10V

-620V± 10V

± 3% ± 3% -1350V ± 60V

At 450 MΩ (Active

Low)

+3000V±100V TX Output Current

12 ± 1㎂

4. 24.5VS is supplied from LVPS. Front section of 24.5V is composed with safety interlock structure to

prevent high voltage output of HVPS when cover is opened.

5. TX channel operates when TX enable signal is entered. TX channel has 2 channels of TX+ and TX-.

6. Enable signal basically applies -1350V to TX-.

7. TX-Sensing works as to detect 12μA current constantly.

TX-Sensing signal delivers “LOW LEVEL” when transfer’s output current is lower than 12μA and “HIGH

LEVEL” when it is higher than 12μA.

8. CHG PWM : It controls CHG and PD channel voltages. PD channel always maintains 200V versus GND

using zener diode.

9. DEV PWM : It controls DEV, TR and BL channel voltages. TR and BL voltages use zener diode to always maintain DEV-120V and DEV-300V versus DEV output voltage

Circuit Diagram-LVPS Input Section 1. Line filter Part

2. AC-DC Rectificat ion Part

3. 24V Output

Part

4. 5V Output Part

5. AC Drive Sect ion

6. Switching Part

Circuit Diagram-HVPS Input Section

1. PWM Input Sect ion

2. RCC Control drive sect ion

3. High Voltage Output

4. TX-SENSING Part

Replacement and Adjustment

Before Start ing

Before installing options, please proceed with the followings: If there are any print ing jobs, print all jobs in the printer buffer out. Turn the main power switch off and remove power cord and network cable from the machine. Be careful not to lose bolts when disassembling and see harness path to handle paths identical

when reassembling. Assembly should be in reverse order of disassemble.

Exterior Cover

Rear Door and Cover

1. Open the rear door [A].

2. Remove 4 bolts and pull it out forward to remove the back door and cover from main body.

When removing rear cover from the main body, be careful not to damage 4 hooks inside

the cover.

Left Cover

1. Remove rear door and cover from the main body. 2. Remove the bolt in above figure.

3. Unlock 4 hooks at the bottom of the machine and lift the cover up to remove it from the machine.

Be careful not to damage 8 hooks inside the cover when removing the left cover.

Right Cover

1. Remove rear door and cover from the main body. 2. Unlock 4 hooks at the bottom of the machine and lift the cover up to remove it from the machine.

Be careful not to damage 7 hooks inside the cover when removing the right cover.

Front Door

1. Open the front door [A]. 2. Unlock 3 hooks on the left and right to remove links.

3. Push the left door hinge to the left and remove it from the frame.

4. Push the right door hinge to the left and remove it from the frame. When reassembling, push the left and right hinges to frame’s right side to fixate it and connect 3

links.

Upper Cover

1. Remove the rear cover and the left and right covers from the machine. 2. Remove the Control Panel. 3. Remove 2 bolts on the top left of the frame.

4. Remove 2 bolts on the right side of the frame and lift the upper cover up to remove it from the

machine.

Paper Delivery Cover

1. Remove the rear cover. 2. Remove 2 bolts on the left and right side on the frame and pull it forward to remove the paper

delivery cover from the machine.

LSU

Laser Safety CDRH (Center for Devices and Radiological Health) prohibits laser unit repairing on a f ield. A laser unit can only be repaired in a factory or necessary places. A laser unit can be replaced with qualif ied customer service technician and internal parts of laser unit cannot be replaced on a f ield. Therefore, the customer service technician is to return the laser unit to a factory or service center if laser unit’s parts require replacements.

LSU Information

<L/LF MODEL> LSU Manufacturer: E-PIN OPTICAL INDUSTRY CO.,LTD. LSU Form No.: IO-L611-S04 LD Manufacturer: QSI LD Form No.: QL78C6SA-L <MF/HF MODEL> LSU Manufacturer: OSS CO.,LTD.. LSU Form No.: SDH-LSU-A4001 LD Manufacturer: QSI LD Form No: QL78F6DF

LSU NOTICE This machine is approved by US for in compliance with DHHS21 CFR Subchapter J regulat ions for class 1

laser products, and IEC 60825-1 regulat ions in other countries as well. Class 1

laser products are considered safe. This machine uses 770~795 nm(L model) and 770~800 nm(M/H

model) frequencies and 5mW(L model) and 15mW(M/H model) output of one AIGaAs laser diode (L model) and two AIGaAs laser diodes(M/H model).This system and machine are operat ing properly, but designed to not to allow accesses to class 1 laser emission under maintenance or regulated service condit ions.

Please turn the main power switch off before performing procedures in laser unit. Laser can cause

severe eye damages.

Performing controls, adjustments or procedures other than said from this manual can cause

severe radiat ion exposures.

LSU Replacement

Please check if main power switch has turned off and power cable is pulled from outlet before disassembling or adjust ing the laser unit. <L/LF MODEL>

5. Open the front door 6. Remove the rear cover 7. Remove left and right covers 8. Remove the upper cover. 9. Remove 3 screws [A] on the laser unit.

10. Remove the laser unit from the frame. 11. Remove the laser unit cables [B].

<MF/HF MODEL>

12. Open the front door 13. Remove the rear cover 14. Remove left and right covers 15. Remove the upper cover. 16. Remove laser unit’s FLAT CABLE and motor harness connector

6. Remove 4 laser unit’s screws.

7. Remove laser unit from the frame ※ Laser unit being removed

Installing Laser Unit

<L/LF MODEL> 17. Connect the laser unit cables. 18. Before t ightening the laser unit with screws, use skew JIG [A] to posit ion the laser unit and t ighten 3

screws [B].

<MF/HF MODEL> 1. Place laser unit on the frame 2. Before t ightening the laser unit with screws, use skew JIG [A] to fix laser unit’s posit ion and t ighten 4

screws. ※ Screw t ightening order: 1, 2, 3 and 4

When re-installing the laser unit, check the laser unit’s alignment and proceed with the “Laser Unit Adjustment” before the upper cover installat ion.

Laser Optical Housing Unit Alignment

When replacing the laser unit with a new one, please proceed with following procedures to align the laser unit. < L/LF MODEL >

[ A ]

1

2

3

4

A : LSU unit C : Assembly knob (cam format)

B : BLACKET STAY : LSU

1. Put ‘1’ hole on ‘A’ to ‘1’ EMBO shape on ‘B’ 2. Put bump on ‘C’ floor through ‘2’ shape on ‘A’ to ‘2’ hole on B 3. Rotate ‘C’ to circumferent ial direct ion to match the end of the arrow on the bottom of ‘C’ with ‘+’

hole around ‘2’ hole on B.

4. Lock a washer bolt on ‘3’ posit ion. 5. Lock a washer bolt on ‘4’ posit ion.

6. Lock a washer bolt on ‘5’ posit ion.

7. Remove ‘C’. <MF/HF MODEL>

A : Laser Unit C : Skew Adjust ing JIG (cam format)

B : BKT STAY LSU

1. Put ‘1’ hole on ‘A’ to ‘1’ EMBO shape on ‘B’ 2. Put bump on ‘C’ floor through ‘2’ shape on ‘A’ to ‘2’ hole on B 3. Rotate ‘C’ to circumferent ial direct ion to match the end of the arrow on the bottom of ‘C’ with ‘+’

hole around ‘2’ hole on B.

[ A ]

1

2

[B ]

[C]

‘+’ Hole on C

4. Tighten 4 screws and remove ‘C’

Main Driving Motor

1. Remove the rear cover and left cover. 2. Remove 4 main driving motor support ing screws [A] 3. Remove the cable [B] on main driving motor.

4. Remove the main driving motor.

Main Driving Gear Unit

Main Driving Gear Unit Removal 1. Remove system card and internal shield and front cover link. 2. Remove the rear cover and left cover. 3. Remove the main board. 4. Remove the main driving motor. 5. Unlock the hook [A] on MPT driving gear spindle and remove gears

When removing the gear fix hook, be careful not to damage or alternate it.

‘+’ Hole on B

6. Remove the screw [A] on MPT solenoid.

7. Remove the solenoid. 8. Spread the center of the link hook [A] connected to front cover to unlock the link.

9. Remove 3 screws [A] on the sub-bracket.

10. Remove the sub-bracket. 11. Remove link gear [A] and 4 screws [B] on main driving gear.

12. Lightly pull the main driving gear unit to remove it from the frame.

When removing the main driving gear unit, make sure not to drop it and not to cut the cables. Re-assemble should be in reverse order of disassemble.

Drum and Development Unit

Removing Image Cartridge from the Main Body 1, Open the front cover of the machine.

2. Hold the development unit handle and pull it upward to remove it.

Separating Drum Unit and Development unit

1. Press and hold the [A] development unit pressure release lever down and hold [B] handle. 2. Pull the development unit obliquely upward and remove the drum unit.

Transfer Roller 1. Remove the front door. 2. Remove the image cartridge. 3. Unlatch the left bushing latch on transfer roller and pull it up. 4. In the same manner, unlatch the right bushing latch and lift it up to remove the transfer roller.

When disassemble, be careful not to touch the transfer roll.

Fusing Unit

Fusing Unit Removal

Before proceeding with any procedures in this sect ion, turn the main power switch off and wait

until the Fusing Unit cools down. You can get burn from the Fusing unit. Turn the main power switch off. 1. Open the front door 2. Remove the rear cover. 3. Remove 2 screws [A].

4. Separate 3 connectors in red circles.

5. Remove Fusing assembly from the machine.

Assemble should be in reverse order of disassemble.

Fusing Lamp 1. Open the front door 2. Remove the rear cover. 3. Remove Fusing assembly from the machine. 4. Remove 2 screws to remove heater side covers.

5. Remove 2 screws on heater

6. Remove the Fusing Lamp.

Thermostat 1. Open the front door and remove rear cover. 2. Remove the Fusing assembly. 3. Remove 2 screws for thermostat

4. Push the bending and pull out the thermostat therminal from harness

Cooling Fan 1. Open the front door and remove left and right covers from frame. 2. Remove the upper cover. 3. Hold the [A] part on the cooling fan and remove it from frame.

When reassembling the cooling fan, make sure to adjust to correct left and right sides.

4. Remove the cooling fan harness connected to CN25 connector from system card.

Paper Feed

Separating Main Feed Roller 1. Open the front door and separate the link.

2. Remove the left cover. 3. Remove 3 screws to separate segment gear [A] and bypass solenoid a’ssy.

4. Remove the driving gear a’ssy. 5. Remove the segment gear [B] contact ing with feed solenoid.

6. Remove pickup shaft holder [C].

7. Turn the bushing holding the pickup shaft to the machine to the right to remove.

8. Push the bushings on both sides of pickup roller frame to remove the pickup roller.

Paper Detection Sensor 1. Separate the feeder and remove one screw at the bottom of the machine to remove it.

Manual Paper Tray (MPT)

1. Open the front door and disconnect the link connected with the machine. 2. Push the front door to the left to remove it from the machine.

3. Remove 2 screws to separate door open shaft.

4. Separate MPT from the front door hole.

MPT’s Bottom Body A’ssy Friction Pad Replacement

1. Open the front door and remove 2 screws. 2. Separate the harness connected to the left Registrat ion sensor. .

3. Separate MPT’s bottom body a’ssy to replace frict ion pad a’ssy.

MPT Paper Detection Sensor Removal

1. Separate MPT’s bottom body a’ssy. 2. Remove the hook on the side of frict ion pad to remove MPT paper detect ion sensor.

Pick Roll’s Top Body A’ssy Removal

1. Remove the front door. 2. Remove the segment gear and clutch a’ssy. 3. Remove the metal clamp [A] contact ing with pick roll.

4. Remove the bushing holding pick roll shaft to the right 12 o’clock direct ion and remove it.

5. Separate top body a’ssy while pushing to the left. Separate the pick roll shaft installed on top of body

a’ssy hole.

6. Remove bushings on shaft’s both ends and E-Ring to remove arm from the shaft.

7. Pick up roller and idle roller can be removed and replaced.

Option tray Unit Cover Removal

1. Take the tray cassette out and separate feeding unit from the machine.

Before removing the tray unit from the machine, the machine’s power must be turned off.

2. Separate the tray unit and remove 4 screws.

3. Separate the connector to remove the left cover. Be careful not to damage the hook inside of top left cover.

4. Separate right cover. Be careful not to damage the hook inside of top right cover.

Option tray Pickup Roller Removal

1. Flip the tray.

2. Push down the plast ic preventing bushing separation and removal of the bushing.

3. Remove the bushing on the other side with same manner.

4. Disassembled Pickup Roller

Option tray Feeding Roller Removal

1. Remove one E-ring and 4 screws to separate left board and motor mounted bracket.

2. Remove the segment gear [A] and gear [B].

3. Remove one screw to remove pickup shaft holder [C].

4. Rotate the pickup shaft bushing to right to remove pickup shaft and 2 screws.

5. Remove 2 screws on the top right of pickup a’ssy.

6. Separate the pickup a’ssy. Pick the right side up to remove harness through the frame hole

7. Remove E-ring and bushing to remove feeding roller shaft.

Registration Guide A’ssy

1. Remove 2 springs [A] connected to the Registrat ion Guide A’ssy on the bottom of the machine.

2. Tilt the Registrat ion Guide A’ssy to 60° and pull it forward to remove it.

Registration Roller Removal

1. Remove the screw [A] and spring [B] from the bottom and disconnect spring [C]. 2. Push coupler [D] outward to remove.

2. Hold the coupler removed from cover’s side and lift it to remove the Registrat ion roller a’ssy.

Paper Delivery Unit

1. Remove the rear cover. 2. Remove 2 screws holding delivery frame and push Fusing delivery guide down and remove the

delivery frame.

3. Remove 2 screws to replace Fusing driving gear. Delivery roller shaft can be separated.

4. Remove the left and right covers. 5. Remove the top cover and the idle roller inside the cover can be replaced.

Duplex Unit

Duplex Unit Removal

1. Remove the bin tray and option tray from the machine. 2. Push down the bottom body of duplex unit to remove the duplex unit.

3. Open rear cover.

4. Use a flat head driver on the bottom left cover connector to push it in and disconnect it.

Be careful not to damage the connect ing part. (Each on left and right)

5. Stand the machine to remove Duplex Unit’s bottom body. Push the cassette fixing clip on the rear to not to get caught and remove it.

6. Remove 3 screws [A], [B] and [C] on Duplex Unit’s top body to remove the top body.

7. Remove the machine’s right cover.

8. Remove PDU and screw [A].

9. Remove the pickup roller a’ssy. 10. Remove 2 screws [A] and [B] to remove the duplex unit’s front guide.

11. Remove the screw and pull the duplex unit’s front guide obliquely.

[Front]

When installing duplex unit, assemble the front body as the figure exactly to the frame hole.

12. Replace the front body with no white holders on left and right to install them.

Install duplex unit with reverse of removal procedure.

For Duplex Unit

For General

Front Part

Main Board

1. Remove the rear cover of the machine. 2. Open the front door and remove the left cover.

3. Separate 15 harnesses from the connector and 4 bolts and the main board.

Be careful not to disconnect harness wires when removing the harness from the connector. When disassemble, take caution on paths to use it on re-assemble.

PDU 1. Remove the rear cover and open the front cover. 2. Remove the right cover.

3. Remove 8 bolts.

4. Separate 4 harnesses from the connector and remove PDU board.

Be careful not to disconnect harness wires when removing the harness from the connector. When reassemble, take caution not to have the harness to get caught on the right cover hook.

ADF Exterior Cover

ADF Front Cover

1. Lift ADF assembly up.

2. Unlock 3 hooks. 3. Open ADF’s top cover and remove ADF’s front cover.

ADF Rear Cover

1. Open ADF’s top cover.

2. Unlock 2 hooks.

3. Press both of cover sides to arrow direct ion to remove ADF’s rear cover.

ADF Top Cover

1. Open ADF’s top cover.

2. Push ADF’s top cover and ADF frame to arrow direction to remove ADF’s top cover.

ADF Unit

ADF Pick up Assembly

1. Open ADF’s top cover.

2. Hold ADF pick up assembly and pull it to arrow direction to remove it.

Reinstalling ADF Pick up Assembly

Install ADF pick up assembly and press the isolat ion pad to arrow direct ion to set it to the right posit ion.

ADF Isolation Pad

1. Open ADF’s top cover. 2. Remove ADF feed/pick roller assembly.

3. Hold and pull the isolat ion pad and lift it to remove.

ADF Idle Guide

1. Remove ADF’s top cover. 2. Lift ADF assembly up.

3. Push it to arrow direct ion to remove ADF idle guide.

ADF Pressure Plate

1. Lift ADF assembly up.

2. Use flat-head driver on (A) part and remove ADF pressure plate.

Be careful not to lose pinch pad spring.

ADF’s Document Tray Assembly

1. Remove ADF’s top cover. 2. Remove ADF Pick up Assembly 3. Remove ADF idle guide.

4. Remove 4 screws and lift ADF document tray assembly to arrow direction to remove it.

ADF Assembly Removal 1. Remove the rear cover. 2. Remove the left cover. 3. Remove left scanner cover. 4. Remove ADF assembly cable from control board.

5. Press the right ADF assembly hinge to arrow direct ion and lift it up to remove it from the printer.

ADF Top Guide and Motor Assembly

1. Remove ADF assembly. 2. Remove ADF’s top cover. 3. Remove ADF’s front cover. 4. Remove ADF’s rear cover 5. Remove ADF Pick up Assembly 6. Remove ADF idle guide. 7. Remove ADF’s Document Tray Assembly

8. Remove 4 screws and lift ADF’s top guide and motor assembly.

9. Remove 2 screws and unlock 3 hooks (A), and remove motor harness to remove ADF’s top guide and motor assembly.

10. Remove 2 screws and remove the motor from gear bracket.

A3 Clutch Assembly

1. Remove ADF assembly. 2. Remove ADF Top Guide and Motor Assembly. 3. Remove ADF back plate.

4. Remove 3 screws (A) and A3 guide.

5. Press it to arrow directions and remove A3 assembly from ADF frame and A3 clutch harness.

6. Remove 2 screws and A3 clutch assembly.

Scanner Flat Bed Unit

Scanner Flat Bed Assembly Removal

1. Completely open the scanner flat bed.

2. Press it to arrow direct ions to remove scanner flat bed assembly.

Scanner Unit

Left Scanner Cover

1. Remove the rear cover 2. Remove the left cover.

3. Lift left scanner cover up and pull it to remove it.

Right Scanner Cover

1. Remove the rear cover 2. Remove the right cover.

3. Lift right scanner cover up and pull it to remove it.

Rear Scanner Cover

1. Remove the rear cover 2. Remove the left cover. 3. Remove the right cover. 4. Remove the left scanner cover. 5. Remove the right scanner cover.

6. Unlock the hooks which is in inside of left and right side of rear scanner cover.

7. Pull the rear scanner cover down to arrow direction and pull it to remove it.

Be careful not to damage hooks while removing the cover as it is f ixed with hooks.

Control Panel

1. Unlock 4 hooks at the bottom of front scanner cover and lift the Control Panel up. 2. Remove Control Panel’s harness.

Scan Cover Assembly

1. Remove ADF assembly. 2. Remove Control Panel.

3. Unlock 3 hooks on scanner’s back.

4. Lift up the scan cover and unlock 3 hooks.

CIS Assembly

1. Remove ADF assembly. 2. Remove the scan cover assembly. 3. Lift CIS assembly up from timing belt to remove it.

4. Remove CIS guide (A) and flat cable. 5. Remove CIS assembly.

Scanner Drive Assembly

1. Remove ADF assembly. 2. Remove the scan cover assembly. 3. Remove CIS assembly.

4. Press pulley housing to arrow direction to loosen the timing belt to remove timing belt from driving gear.

5. Remove pulley housing spring and remove the pulley housing from scanner frame.

6. Lift sensor (A) up and remove it and remove 2 screws (B). 7. Remove harness from driving motor.

Troubleshooting

Error Messages and Error Codes

Service Error Code Generally, it is not possible to recover when service error code is displayed, but temporary errors may disappear when POR the printer.

Service Error Code(3xx)

Errors Descriptions Actions 300 Fuser under

temperature while printing

It occurs when Fusing temperature is lower than the set temperature for more than 10 seconds while print ing

1. Check the harness between Fusing and power unit 2. If the problem is not solved, replace the Fusing unit

301 Fuser under temperature while at standby

It occurs when Fusing temperature is lower than the set temperature for more than 10 seconds during stand by

1. Check the harness between Fusing and power unit 2. If the problem is not solved, replace the Fusing unit

302 Fuser failed to reach standby temperature

It occurs when Fusing temperature does not reach stand-by temperature within 60 seconds after POR

1. Check the harness between Fusing and power unit 2. Check the harness between system card and thermistor 3. If the problem is not solved, replace the Fusing unit

303 Fuser over temperature

It occurs when Fusing temperature goes over 230 degrees 1. Check the harness between Fusing and power unit 2. If the problem is not solved, replace the Fusing unit

304 Fuser thermistor failure

It occurs when Fusing temperature does not go over 35 degrees within 10 seconds after POR

1. Check the harness between Fusing and power unit 2. Check the harness between system card and thermistor 3. If the problem is not solved, replace the Fusing unit

310 Printhead lost Hsync It occurs when printer head cannot detect Hsync properly 1. Check the harness between system card and printer head 2. If the problem is not solved, replace the print head

311 Mirror motor lock failure

It occurs when print head’s internal mirror motor does not reach target speed within the configured t ime

1. Check the harness between system card and printer head 2. If the problem is not solved, replace the print head

320 Main motor lock It occurs when driving motor does not reach target speed within the configured t ime

failure 1. Check the harness between system card and driving

motor unit 2. If the problem is not solved, replace the driving motor unit

330 Fan motor lock failure

It occurs when fan motor does not reach target speed within the configured t ime

1. Check the harness between system card and fan unit 2. If the problem is not solved, replace the fan unit

340 Option Tray Lost link Error

It occurs when there’s a communication problem between option tray

1. Check the harness between system card and option tray 2. If the problem is not solved, replace the option tray board

390 Engine Software Error

It occurs when a problem that cannot be recovered from engine software

1. Check the problem reoccurrence after POR 2. If the problem reappears, replace the system card

Service Error Code(5xx)

Errors Descriptions Actions

501 OPL Parsing Error It occurs when a problem occurs during OPL parsing (sentence analyzing)

1. Check if correct printer driver is installed 2. Check if recommended USB cable is being used 3. Replace the system card

502 PJL Parsing Error It occurs when a problem occurs during PJL parsing 1. Check if correct printer driver is installed 2. Check if recommended USB cable is being used 3. Replace the system card

503 Software Error Module 1

Software Error Module 1 1. Check reoccurrence after POR 2. Replace the system card

504 Software Error Module 1

Software Error Module 2 1. Check reoccurrence after POR 2. Replace the system card

505 Software Error Module 1

Software Error Module 3 1. Check reoccurrence after POR 2. Replace the system card

506 Software Error Module 1

Software Error Module 4 1. Check reoccurrence after POR 2. Replace the system card

507 Software Error Module 1

Software Error Module 5 1. Check reoccurrence after POR 2. Replace the system card

Service Error Code(2xx)

Errors Descriptions Actions

201 Insufficient Memory It occurs when allocated memory is insufficient 1. Check reoccurrence after POR 2. Replace the system card

202 Memory Full It occurs when memory is full 1. Check reoccurrence after POR 2. Replace the system card

211 Defective Flash It occurs when flash drive cannot be recognized 1. Check reoccurrence after POR 2. Replace the system card

212 Too Many Bad Block It occurs when there are too many bad blocks in flash part it ion 1. Check reoccurrence after POR 2. Replace the system card

213 Flash Full It occurs when flash is full 1. Format the flash 2. Close some stand-by tasks

221 Boot Argument Read Failure

It occurs when necessary arguments when booting 1. Check reoccurrence after POR 2. Replace the system card

251 USB Device Open Failure

It occurs when USB device cannot be used 1. Check reoccurrence after POR 2. Replace the system card

Service Error Code(4xx)

Errors Descriptions Actions

401 Insufficient Memory It occurs when allocated memory is insufficient 3. Check reoccurrence after POR 4. Replace the system card

402 Memory Full It occurs when memory is full 3. Check reoccurrence after POR 4. Replace the system card

411 Defective Flash It occurs when flash drive cannot be recognized 3. Check reoccurrence after POR 4. Replace the system card

412 Too Many Bad Block It occurs when there are too many bad blocks in flash part it ion 3. Check reoccurrence after POR 4. Replace the system card

413 Flash Full It occurs when flash is full

3. Format the flash 4. Close some stand-by tasks

421 Boot Argument Read Failure

It occurs when necessary arguments when booting 3. Check reoccurrence after POR 4. Replace the system card

451 USB Device Open Failure

It occurs when USB device cannot be used 3. Check reoccurrence after POR 4. Replace the system card

User Interactive Messages and Paper Jam Message Paper jam and paper jam messages occur with the following reasons.

Bad pickup solenoid or solenoid cam abrasion Flag and spring defect Standard guide backup roller abrasion Inappropriately adjusted standard guide Obstacles in paper path Different paper length than the length assigned from driver

Printer’s Paper Jam and Cartridge Error Messages

Messages Descriptions

InvalidCartridge It occurs when cartridge recognit ion fails or when cartridge is not installed

Reinstall the cartridge and check if it reoccurs Check the contact between Smart IC installed in cartridge and

system card

Replace the cartridge

Toner Cartridge Change It occurs when cartridge capacity is exceeded 1. Replace the cartridge

Toner Low It occurs when remaining cartridge toner is insufficient 1. Prepare to replace the cartridge

Paper Empty: T1 It occurs when a task was sent to 1 Tray while there’s no paper (copy tray)

1. Check the operation status of tray 1 empty sensor flag 2. Check if tray 1 empty sensor is operating (Diagnosis Mode)

3. If it does not operate, replace the sensor and test again

Paper Empty: T2 It occurs when a task was sent to Tray 2 while there’s no paper (option tray)

Check the operation status of tray 2 empty sensor flag Check if tray 2 empty sensor is operating (Diagnosis Mode)

If it does not operate, replace the sensor and test again

Paper Empty: MPT It occurs when a MPT task was sent while there’s no paper 1. Check the operation status of MPT empty sensor flag 2. Check if MPT empty sensor is operat ing (Diagnosis Mode) 3. If it does not operate, replace the sensor and test again

101 Paper Jam It occurs when paper does not reach at the entrance sensor within a certain t ime after pick up attempt from copy tray (Even if 101 paper jam occurs when pickup from feeder fails, there might be a jammed paper on the paper path)

1. Check if papers are loaded properly (check feeder guide’s status) 2. Check if there are too many papers in the tray 3. Check the paper status (check if paper is damaged or not) 4. Check if there’s an obstacle between the tray and entrance

sensor’s paper path 5. Check if the pickup solenoid operates properly picks up 6. If it does not operate, replace the solenoid and test again 7. Check if entrance sensor works properly (Diagnosis Mode) 8. If it does not operate, replace the sensor and test again

Messages Descriptions

102 Paper Jam It occurs when paper does not reach at the entrance sensor within a certain t ime after pick up attempt from option tray (Even if 102 paper jam occurs when pickup from feeder fails, there might be a jammed paper on the paper path)

Check if papers are loaded properly (check feeder guide’s status) Check if there are too many papers in the tray Check the paper status (check if paper is damaged or not) Check if there’s an obstacle between the tray and entrance sensor’s

paper path Check if there is a communication problem between system card

and option tray (Diagnosis Mode) Check harnesses when problem occurs and if the problem st ill

exists, replace the option board and test again. Check if the pickup solenoid operates properly picks up If it does not operate, replace the solenoid and test again

Check if entrance sensor works properly (Diagnosis Mode) If it does not operate, replace the sensor and test again

103 Paper Jam It occurs when paper does not reach at the entrance sensor within a certain t ime after pick up attempt from MPT (Even if 102 paper jam occurs when pickup from MPT fails, there may not be a jammed paper on the paper path)

- Check if papers are loaded properly (check feeder guide’s status)

- Check if there are too many papers in the tray

- Check the paper status (check if paper is damaged or not)

- Check if there’s an obstacle between the tray and entrance sensor’s paper path

- Check if the pickup solenoid operates properly picks up

- If it does not operate, replace the solenoid and test again

- Check if entrance sensor works properly (Diagnosis Mode)

- If it does not operate, replace the sensor and test again

104 Paper Jam It occurs when paper’s top does not reach at the delivery sensor within a certain t ime after passing the entrance sensor

1. Check if there’s an obstacle between the entrance sensor and delivery sensor’s paper path

2. Check if delivery sensor works properly (Diagnosis Mode) 3. If it does not operate, replace the sensor and test again

105 Paper Jam It occurs when paper’s bottom does not get out entrance sensor within a certain t ime

1. Check if there’s an obstacle on paper delivery path after the delivery sensor

2. Check if entrance sensor works properly (Diagnosis Mode) 3. If it does not operate, replace the sensor and test again

106 Paper Jam It occurs when paper’s bottom does not get out the delivery sensor within a certain t ime

1. Check if there’s an obstacle on paper delivery path after the delivery sensor

2. Check if delivery sensor works properly (Diagnosis Mode) 3. If it does not operate, replace the sensor and test again

107 Paper Jam It occurs when paper jam occurs at duplex unit’s path

1. Check if there’s an obstacles on duplex unit’s paper path 2. Check if duplex solenoid operates properly 3. If it does not operate, replace the solenoid and test again 4. Check if entrance sensor works properly (Diagnosis Mode) 5. If it does not operate, replace the sensor and test again

Scanner’s Paper Jam Message (2xx)

201 Scanner Jam Document cannot be fed from ADF.

202 Scanner Jam Paper jam inside of ADF.

Fax Transmission Error Messages

Fax: No Line

There’s no phone line connection. Please connect a phone line. And try fax transmission again.

Fax: Memory Rack

Insufficient fax transmission memory capacity. Erase pending fax jobs and try fax transmission again.

Err: Enter Num

No fax transmission number was entered. Enter transmission number and try again. A problem occurred while receiving fax. Requesting retry to the sender. If the error occurs continuously, lower the receiving speed.

Memory Use Messages

Insufficient Memory

Print trying original file’s capacity exceeded printer’s limitation. Divide the original pages and try printing.

When scanning: There’s not enough memory to use for scanning. Pressing start key will init iate init ializat ion.

USB Device (PC Connection) and Host (USB Memory)

USB Not Ready When USB Memory Print/Scan is tried, but there’s no USB or not recognized. Check if USB is mounted properly and retry it after 5 seconds. USB memory formatted with some special part it ion cannot be used.

File Write Error It occurs when an error occurred while creat ing a file on USB memory scan Please check USB memory’s remain capacity.

USB Disconnected It occurs when USB cable was pulled out and disconnected during a USB cable using scanning. Please check cable connection and press Start key for init ializat ion.

Software Fatal SW Error

Internal SW execution problem has occurred. There’s a high possibility of having damaged flash memory’s file data and normal system operation is not possible. Replace system card if code update is performed, but cannot be solved.

Paper Jam

Most of paper jams occur by inappropriate print paper or incorrect paper loading. If a paper jam message is displayed from a paper jam, all the papers jammed on the entire path must be eliminated to remove the message The following figure displays the paper’s internal path. Paper path varies by the tray (copy tray, option tray and bypass tray) and paper discharge direct ion. See the “Paper Jam Message” described above for details.

Slowly and softly pull the jammed paper to not to tear the jammed paper. If possible, use both hands with even strength to remove the jammed paper.

The following figure shows the document’s path in ADF (front view). Paper path is ADF’s most general “C” path. When a paper jam occurs in ADF, see below procedures to remove the paper jam.

a) When paper’s bottom did not enter 1st idle roller (A5~Legal)

- Open ADF’s top cover.

- Remove pick up Ass’y.

- Slowly pull the paper’s bottom to right to remove the jammed paper.

- Reassemble pick up Ass’y.

- Close ADF’s top cover.

b) When paper’s bottom got near to pressure plate (A5~Legal)

- Open entire ADF unit.

- Slowly pull the paper’s bottom to left to remove the jammed paper.

- Close entire ADF unit.

c) When paper’s bottom is in between 2nd idle roller and pressure plate

- Open entire ADF unit.

- Open ADF’s top cover. (Idle roller’s pressure gets released)

- Hold both sides of paper near pressure plate with hands and pull the paper’s bottom to right to let paper’s bottom to appear.

- Hold paper’s bottom with hands and pull it to left to remove the jammed paper.

- Close ADF’s top cover.

- Close entire ADF unit.

d) When paper’s bottom passed pressure plate (A5~Legal)

- Put hands to paper guide’s bottom and remove the jammed paper to right side.

Pressure Plate

Delivery Idle Roller

SB2 Actuator

Idle Roller

Idle Roller

Idle Roller SB1 Actuator

Delivery Roller Pick up Roller

Scan Roller

Isolation Roller

Slowly and softly pull the jammed paper to not to tear the jammed paper. If possible, use both hands with even strength to remove the jammed paper.

Service Menu

Diagnosis Menu

This chapter describes to check occurred errors and tests and procedures to repair the error. Most of service modes can be used by select ing special keys during POR.

Diagnosis Mode

In order to run the diagnosis test described in this chapter, you need to enter Diagnosis Mode. The configurations and operations used for machine manufacturing and servicing are included in the Diagnosis Mode Group.

Entering Diagnosis Mode 1. Turn the machine’s power on. 2. Press either arrow buttons. 3. Press the Continue key. 4. Press the Select key. 5. When password is indicated, press left arrow three times and right arrow three times. 6. Press the Select key. Diagnosis Mode menus are displayed on the control panel in following orders General Service

Pattern Print Button Test

Printer Service

PRT Registration Margin Adjust

Left Margin Top Margin

Magnification Horizontal Vertical

Print Skew Page Hardware Test

Sensor Test Solenoid Test Quality Pages

Printer Setup Page Count Perm Page Count

Scanner Service

FB Left Margin FB TOP Margin ADF Left Margin ADF TOP Margin

Fax Service

FAX TEST Menu Generate Tone Detect Ring Go Off Hook Modulation

FAX SETUP Fax Setting Modem Sett ing Counter

ERROR LOG

Display Log Print Log Clear Log

To exit the Diagnosis Mode, press the Return button from the top menu to return to general mode.

POR must be performed after hardware test and others for stable operation.

General Service

Pattern Print When the copy’s image has a problem, do not print scanned image, but print 256 patterns to distinguish the cause. 1. Select Pattern Print from diagnosis mode. 2. Press Select key. 3. Check 256 patterns instead of actual scan. 4. To exit, press Return. Button Test 1. Select Button Test from diagnosis mode. 4. To test operations of each button, press each button on the Control Panel once and see if names of

each key are displayed on LCD. But, for Return button, it is used as to exit the test menu, it will not be displayed, but exits the test.

5. Press Return to cancel the test.

Printer Service

PRT REGISTRATION Margin Adjustment To print margin adjustment:

1. Select PRT Registration from Diagnosis Mode. 2. Select Margin Adjust. 3. Select a value to change from Left Margin and Top Margin 4. Press the arrow keys to set desired value and press Select key.

Print margin range is like the followings and can be changed with unit of 1.

Categories Values

Top Margin -25 ~ +25

Left Margin -25 ~ +25

5. To exit, press Return.

Select Print Skew Page from the menu to print on the letter or A4 paper. Magnification To adjust magnificat ion:

1. Select REGISTRATION from Diagnosis Mode. 2. Select Magnification. 3. Select a value from either Vertical or Horizontal. 4. Press the arrow keys to set desired value and press Select key.

Magnificat ion ranges that can be configured are as the following.

Descriptions Values

Vert ical Magnificat ion -5 ~ 5 (default: 0)

Horizontal Magnificat ion -5 ~ 5 (default: 0)

5. To exit, press Return.

Print Skew Page Print the Skew Test Page that can check the changes after changing margins or magnificat ion. When each configuration was changed, select this menu to check the changed results.

HARDWARE TEST (Printer Hardware Test)

Sensor Test This test is used as to check if all the sensors and switches installed in the machine operates properly or not. The sensors and switches that can be checked from the sensor test mode are the followings: - Input Sensor - Exit Sensor - Tray1 Empty Sensor - Tray2 Empty Sensor - MPT Empty Sensor - Front / Rear Cover To run the Sensor Test:

1. Select Hardware Test from diagnosis mode. 2. Select Sensor Test. (Entering sensor test mode completed)

When 6 sensors and switches listed above change its status during the sensor test mode, the status will be displayed on LCD.

For example, if you close and open cover continuously during the sensor test mode and ‘Cover open/close’ message appears normally, the status of cover switch is normal. If message is not displayed properly, there’s a problem with cover switch status and it needs to be inspected. Solenoid Test This test is used as to check if all solenoids installed in the machine operate properly or not. The solenoids that can be checked from the solenoid test mode are the followings: - Tray1 Pick up Solenoid

- MPT Pick up Solenoid - Duplex Solenoid To run the solenoid test:

1. Select Device Test from Diagnosis Mode. 2. Select Solenoid Test. (Entering solenoid test mode completed and start test)

When solenoid test starts, 3 solenoids listed above are turned on at the same t ime. And turned off after 2 seconds. Quality Pages(Print Quality Page To print the print quality page:

1. Select PRINT TESTS from Diagnosis Mode. 2. Select Quality Pages.

2 pages will be printed. Button operations will be ignored until pages are printed.

First page is a skew adjust ing page and the other page is a print quality checking page.

PRINTER SETUP Page Count You can check and modify the page count value. To modify the page count:

1. Select Page Count from PRINTER SETUP menu. 2. The selected number can be increased or decreased with arrow keys and pressing Select will

apply the changed value temporarily. 3. Pressing Select again will save the changed number. 4. To cancel, press Return key.

Perm Page Count (Permanent Page Count)

Permanent page count can be seen from this menu option. The permanent page count cannot be changed from Control Panel by a user or technical engineer.

Scanner Service

FB Left Margin To adjust scan margin, 1. Use the gradation chart on the paper’s edge to check current scan margin. 2. Select value to be changed from Top Margin and Left Margin. 3. Press the arrow keys to set desired value and press Select key.

Print margin range is like the followings and can be change with unit of 1.

Categories Value (unit: 1/600 inch) Image Moving Direction

FB top margin -94 ~ + 94 +: Image moves up

FB left margin 0 ~ +22 +: Image moves left

ADF top margin - 94 ~ +94 +: Image moves up

ADF left margin 0 ~ +22 +: Image moves right

4. Use the gradation chart on the paper’s edge to check changed margin. 5. To exit, press Return. 6. Adjust FB top margin, ADF top margin and ADF left margin identically.

FAX Service

FAX TEST

Generate Tone 7. Select Fax Test from diagnosis mode. 8. Select Generate Tone. 9. Use arrow keys to set the signal to test and press Select key.

When the signal is selected, output signal is sent and continued until stop key is pressed. The categories that can be tested from Generate Tone are the followings.

1) Answer Tone 2) DTMF Tone - 0~9, *, # 3) 2100Hz Tone 4) 1100Hz Tone

10. Use measuring instrument to inspect and press Stop key. 11. To exit, press Return. Detect Ring This function is used as to measure received ring signal. A measuring instrument is required for signal test.

1. Select Fax Test from diagnosis mode. 2. Select Test Menu. 3. Select Detect Ring. 4. Ring signal is received until Stop key is pressed. 5. Use measuring instrument to inspect and press Stop key. 6. To exit, press Return.

Go Off Hook This function is used as to measure off hook signal. A measuring instrument is required for signal test.

1. Select Fax Test from diagnosis mode. 2. Select Test Menu. 3. Select Go Off Hook. 4. Off hook is maintained until Stop key is pressed. 7. Use measuring instrument to inspect and press Stop key. 8. To exit, press Return.

Modulation This function is used as to test modulation signal. A measuring instrument is required for signal test.

1. Select Fax Test from diagnosis mode.

2. Select Test Menu. 3. Select Modulation. Selectable Modulations are the followings.

A. V.21 300bps B. V.27ter 2400bps C. V.27ter 4800bps D. V.29 7200bps E. V.29 9600bps F. V.17 7200bps L G. V.17 7200bps S H. V.17 9600bps L I. V.17 9600bps S J. V.17 12000bps L K. V.17 12000bps S L. V.17 14400bps L M. V.17 14400bps S N. V.34 2400bps O. V.34 4800bps P. V.34 7200bps Q. V.34 9600bps R. V.34 12000bps S. V.34 14400bps T. V.34 16800bps U. V.34 19200bps V. V.34 21600bps W. V.34 24000bps X. V.34 26400bps Y. V.34 28800bps Z. V.34 31200bps AA. V.34 33600bps BB. V.34 2400 baud CC. V.34 2800 baud DD. V.34 3000 baud EE. V.34 3200 baud FF. V.34 3429 baud

4. Use arrow keys to set the signal to test and press Select key. When the signal is selected, output signal is sent and continued until stop key is pressed.

5. Use measuring instrument to inspect and press Stop key. 6. To exit, press Return.

Fax SETUP Fax Setting

1. Select Fax Test from diagnosis mode. 2. Select Fax Setting 3. Use arrow keys to select a menu to test and press Select key. The categories that can be tested

from Fax Setting are the followings. 1) Tx Speed

(1) V.34 (2) V.17 (3) V.29 (4) V.27

2) Rx Speed (1) V.34 (2) V.17 (3) V.29 (4) V.27

3) Coding Option (1) MH (2) MH/MR (3) MH/MR/MMR (4) MH/MR/MMR/JBIG

4) Print T30 Log 5) Detect EOLs: Configuration range 0~6. default 3

4. Press OK to save settings. 5. To exit, press Return.

Modem Setting This function is used as to change Modem configurations.

1. Select Fax Test from diagnosis mode. 2. Select Modem Setting. 3. Use arrow keys to select a menu to test and press Select key. The categories that can be tested from Fax Setting are the followings.

Categories Range Default

Select Country Korea

Dial Timeout 30s ~ 180s 59

Transmit Level -35dB ~ 0dB -11

Receive Threshold -50dB ~ -16dB -43

DTMF Low Level -15dB ~ -1dB -10

DTMF High Level -15dB ~ -1dB -7

Pulse Make Time 20ms ~ 50ms 32

Pulse Break Time 50ms ~ 80ms 64

Pulse Dial Type Normal, Pulse One, Ten Minus Normal

Interdigit Delay 600ms ~ 1000ms 850

DC Characteristic DC1, DC2, DC3, DC4 DC2

Impedance 600, Complex, 540 600

Caller ID Pattern FSK FSK

Busy Tone Cycles 1 ~ 10 3

Busy Tone Min On Time 1 ~ 255 45

Busy Tone Max On Time 1 ~ 255 55

Busy Tone Min Off Time 1 ~ 255 45

Busy Tone Max Off Time 1 ~ 255 55

Extension Support Enable, Disable Disable

Pulse Fall Time Fast, Slow Fast

Extension Voltage Treshold Enable, Disable Disable

4. Press OK to save settings. 5. To exit, press Return.

Counter

This function is used as to check Fax Counter value. 1. Select Fax Test from diagnosis mode. 2. Select Counter. 3. Use arrow keys to select a menu to test and press Select key. The categories that can be checked

from Counter are the followings. i. Tx Total No ii. Rx Total No

Error Log

ERROR LOG Display Log Error log offers the printer’s error history. Up to recent 12 printer errors are displayed. The recent error is displayed first and oldest is displayed on the bottom. When the log is full and an error occurs, the oldest error gets deleted. Each error is displayed with 0XXXXX and 1XXXXX and when the first digit is 0, it is a fatal error (SC) that cannot be solved by general user and 1 is a recoverable error that can be recovered with user’s operation. Additionally, if there are no stored errors, 000000 is displayed. To view error log:

1. Select Display Log from Error Log menu. Error log displays 4 errors in three t imes as the figure. To move to next screen, press Continue.

For example,

In this example, the most recent error is (1) 101201 that can be solved by a user. When there’s no error, 000000 is displayed. Second occurred error is a user recoverable (1) 101205 error and orderly, 7th error is (0) 001400 error that cannot be solved by a user.

2. To exit error log, press Return. Print Log Error log can be printed from addit ional diagnosis information. To print error log:

1. Select Print Log from Error Log menu. 2. To exit Error Log menu, press Return.

Clear Log

1. Select Clear Log from Error Log menu. 2. Clear Log? is displayed. 3. Press Select to clear log. To exit without clearing log, press Return

Optional Tray S/W Upgrade (Download)

Pre-Condition Setting (Step 1)

The download program (FlashSta) must be installed on PC and ABBAbank.mot file and ABBAbank.id file must be in same folder.

Proceed with the followings before running the download program.

1. Turn the power off and plug Shunt on arrow to tray board as above figure.

2. Connect 1 set of download cable as the figure and connect it to serial port on PC.

3. When sett ing is completed as above figure, apply power.

Program Download (Step 2) When step 1 is completed, run the FlashSta.exe file from PC. Download will proceed as the followings.

(Communication Board + Harness + Cable)

Download Cable (1 Set)

Step 1: Click OK. Step 2: Click Refer... and select and run ABBAbank.mot f ile from the folder.

Step 3: When ID value is f illed as above f igure, cl ick OK. Step 4: Click E.P.R...

Step 5: Click OK. Step 6: Downloading the program

Step 8: Download complete

Step 7: From Read Check.

Program Download (Step 2) When program downloading is completed, proceed with the followings.

1. When downloading is completed and step 4 of download procedure window appears, click Exit button.

2. Turn the power off and remove the Shunt and download cable 1 set on tray board from step 1.