er+3rp sharp servicemanualdiagramas.diagramasde.com/otros/er03rps.pdf · er43rp 1. general the...

ER+3RP

SHARP SERVICEMANUAL

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12.

General . . . . . . . . . . . .

Specifications . . . . . . .

Setting of Dip switches

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Disassembly procedure . . . .

Circuit description . . . . . . . . .

Printer unit description . . . . .

CODE:OOZER03RPSM-E

RemotePrinter

MODEL ER-03RpOPTION FOR ER-52BR . ER=8700

ER-4100 9ER”3300ER-3310IN LINE SYSTEM

CONTENTS \

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Overview and operating principle of the printer . . . . . . . . . . . . . . . . . . . . 10

Troubleshooting

Disassembly and

. . . . . . . . . .

reassembly

Test Function (SWI-7: ON) .

Special service tool . . . . . . . .

Circuit diagram . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

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This document has been published to be used~“*~~ ~~~~~~A~lON foraftersaiesserviceonly.

The contents are subject to change without notice.

ER43RP

1. General

The ER-03RP is remote printer which uses the SRN (Sharp RetailNetwork) as external device which are used with ECR and POSterminal that has the same interface.Functionally, the ER-03RP is nearly equal to and compatible with thecument model ER-01RP, except that the ER-03RP does not have anauto cutter feature. (The command is sub-set of the ER-01RP.)The ER-03RP is only available as a desktop model and cannot bemounted on a wail.

System diagram

,. SRN(l Mbrs\ .

1) The maximum number of option units dependsapplication program.

2) The total cable distance should not exceed lkm.

2.

1)

2)

3)

4)

5)6)

7)

8)

9)

10)

11)

(Specification

External interfaceSRN interface ... one host, n units of printersER525R system n = 9 max.ER8700 system n = 5 max.ER3300/331Osystem n = 9 max.ER4100 system n = 9 max.ER52BR/3300/3310 : US, CANADA ModelER8700/4100 : Other

Control methodControlled by the command from the host (ECR,

on the system’s

Pos)

PrinterModel: DP-614 serial dot printerPrinting area: 36 columns/line (normal mode)

18 coloumns/line (enlarge mode)Font: 8 x 8 dot matrixPrint color: Black/red (two colors)Print speed”:” 3.0 lines/secondLinefeed: 18 lines/seconds (fast mode)

Kinds of printing character sizesNormal, Double size

Manual paper cutter (Tear bar)

Print data protectionBacked up by battery.

InstallationDesktop

CabinetMoisture tight

Print paper

Kind: Piain paperSize: 76.0 ~ 0.5mm, paper roll diameter 83mmThickness: 0.07- 0.0’3Weight: 52- 64g/m2

Ink ribbon cassetteColor: Two colors of black and red

Character setASCII conforming 7-bit’8-bit character

12)

13)

OperationmodeSelf testOn-line (normalprintmode)Off-line (standby mode)Print hait mode

outlook

@On-line switch. <opnntermver

@Line feed switch. \/. \

~ ‘~WER indicator

“~\::;:;;::;rQRibbon cover

@Upper cover@Bottom cover

14)

15)

16)

17)

18)

OS-RN

.9 \

$\ @ Power switch@AC cord assy~

~ AC inlet

&/

Fig. 1-1

Size/Weight176(W)x 263(D) x 125(H)mm (include to connector)(6.9”(W) X 10.4”(D) X 4.9”(H))3.2kg (112.8 Ibs)

Power source/Power consumptionAC local voltage (*1O%)50/60HzMax. 30W

Ambient temperature, humidityO“C- 40”C (32 - 104”C)30Y0- 90%

ReiiabiiityPrinter (except dot head): MCBF 2.5 million lineDot head: 50 million charactersInk ribbon: Approx. 2 million characters

Description of Each Block (Ref. Fig. l-l)

0 AC cord assy Insert the connector into the AC inlet ofthe printer and the plug into an AC out-let.

Q) AC inlet An inlet for power input. Insert the con-nector of the power cord assy into thisinlet.

@ Power switch Set the switch ON to turn on power tothe printer.

@ Online switch Press the switch to set the printer to theselect (online) mode. Press the switchagain to set the printer to the deselect(off-line) mode. The switch is also usedto reset the alarm,

-1-

ER-Q3RP

Line feed switch

POWER indicator(yellow green)

ONLINE indicator(yellow green)

ALARM indicator(red)

Connector

Printer cover

Ribbon cover

Upper cover

Bottom rover

Setting of Dip

When the switch is pressed during theprinter operation, the printer is set to thedeselect mode after pfinting the currentline.Setting the power switch ON with the on-line switch held down will initiate themaster reset operation.

Press the switch to feed the paper (inthe deseiect mode only). The switch isused when loading new paper or whentyping space between lines.

Comes on when the power switch is setON, and goes off when it is set OFF.

Comes on when the printer is set to theselect (online) mode, and goes off whenit is set to the deselect (off-line) mode.Printer operation is possible only whenthe indicator is on.

Lights when the printer trouble O@ufredor when the paper has depleted. Whenthe indicator turns on, both the printerand line feed operations are disabled. Toreset this condition, either press the on-line switch or turn off and on the printerpower.

Used to connect the printer to the SRNhost via a cable. Check that the power isoff to both the printer and the SRN hostwhen connecting the cable.

Open the cover to replace the paper.

Open the cover to replace the ribbon.

switchesRemove the bottom cover of the remote printer to acoess the three8-position dip switches.The following describes the dip switch functions.

3-1. SWI (DSI)Swl “1 Used to select CR mde enable/disable.

ON: CR code enabledOFF: CR code disabled

SWI-2,3,4 Used to select the diagnostic program type.

Swl -2 SW1-3 SW1-4 Function

ON ON ON ROMIRAM test

OFF ON ON Host terminal emulation mode

ON OFF ON RAM verifv,OFF OFF ON Dip sw-tch’scan test

ON ON OFF Print test

OFF ON OFF SRN flag continuous transmission *I

ON OFF OFF SRN packet continuous transmission ●1

OFF OFF OFF Line inspection programL

●1 These two tests are collectively referred to as the SRN basic test.

The above dip switch settings are effective only when the diagnosticmode is ON (SW1-7 ON). For deals of the diagnostic programs,refer to Section 3-3.

SWI -5,6

Swl -7

SWI -8

Used to select the code conversion typeThe remote printer provides two different types of codeconversion to handie the difference of code systemsbetween dissimilar machines. The switch is used toselect which type of code conversion to adopt.

Swl -5 SW1+6 Conversion type

OFF OFF Type 1

ON OFF Type 2

OFF ON No code conversion

ON , ON No code conversion

Used to set the diagnostic mode.Upon power-on, the switch is scanned, and when theswitch is on, the diagnostic program is initiated in ac-cordance with the setting of SW1-2,3,4.

ON I Diagnostic mode

OFF ~Normal operation mode

Used to set the auto cutter YES/NO.The ON status of the switch indicates that the autocutter is used. Since the ER-03RP is not provided withan auto cutter, the switch should always be set OFF.

3-2. SW2 (DS2)SW2-1,2,3,4

SW2-5

Not used. All fixed to ON.

Used to select the SRN transmission speed.

OFF ~480 Kbps

ON 1 Mbps

In the normal operation mode (SW1-7 OFF), the switchstate is scanned immediately after the master reset hasdone, and is set in the SRN controller. Master resetmust therefore be done when the transmission speedsetting is changed.in the diagnostic mode, the transmission speed is seteach time, immediately before the execution of the SRNbasic test or the host terminal emulation.

SW2-6,7 Used to set the carrier off monitoring time.

SW2-6 SW2-7Tmer value

1 Mbps 480 Kbps

OFF i OFF 6.4mS 12.8mS

ON OFF 4.8mS 9.6mS

OFF ‘ ON 3.2mS ] 6.4mS

ON ON 1.6mS 3.2mS

In the normal operation mode (SW1-7 OFF), the switchis scanned immediately after the master reset has done,and is set in the SRN controller. Master reset musttherefore be done when the timer setting is changed.In the diagnostic mode, the timer is set each time, im-mediately before the execution of-the SRN basic test orthe host terminal emulation.

SW2-8 Not used. Fixed to OFF.

-2-

3-3. SW3 (DS3)

ER-03RP

4. Disassembly procedureThe dip switch is used to set the SRN terminal address.In the normal operation mode (SW1-7 OFF), the switch is scannedimmediately after the master reset has done, and is set in the SRNcontroller. Master reset must therefore be done when the addresssetting is changed.In the diagnostic mode, the address is set each time, immediatelybefore the executi~n of the SRN basic test.Only in the case of executing the host terminal emulation in thediagnostic mode, the address setting by the switch is used as theaddress of the remote station.The address is set using a binary number with the SW3-1 setting asthe most significant bit and the SW3-8 as the least significant bit.

3-4. Dip switches DS1-DS3 factory setup

SWITCH Function Default

Swl -1 CR code (disabled) I OFF

SW1-2 ISelection of diagnostic program (line

Swl -3~--------:;:-

1 inspection test) ------------

I SW1-4 I ‘ ‘ [ OFF

SW1-5 i ~+Selection of conversion type (type 1) ,

OFF~------------SWI-6 ~ , OFF

SWI-7 \ Diagnostic mode (prohibited) I OFF

I SW1-8 ! Auto cutter (NO) ,I OFF

I sw2-1 II ON I

RSW2-2 Not used

SW2-3 Fixed to All “ON”. RI I I I

SW2-5 I SRN transmission speed (1M bits) ~ ON

$W2-6 I ]Carrier off timer (6.4ms)

I

OFF.-_----_----SW2-7 OFF

!

SW2-8 Not usedII OFFI

SW3-1 I OFFt I L------------4

1 1 L------------A

I SW3-3 I~.

OFF II I L------------q

HSW3-4 Terminal address (OOH)1

OFF-------_----SW3-5 L----.---95: I

I SW3-6 I I OFF Ii I L------------q

I / !-------------+

I SW3-8 I ~ OFF ]

4-1. Removal of upper cover and bottom cover1)

2)

To remove the upper cover, remove the screws M3x6 (at fourlocations) shown in the figure and unfasten the connector with theupper cover lifted up.

Remove the screws M3x6 (at four locations) on both sides toremove the bottom cover. l\

Fig, 4-1

4-2. Removing the printer mechanism● Remove the upper cover.

● Remove the screws M3x14 (at two locations) shown in the figure.

● Remove the printer mechanism by lifting it up in the arrow direc-tion.Note: Two washers are provided for the screw in side (A) only.

Printer

Fig. %2

-3-

ER-03RP

4-3. Removing the control PWB and SRN interface

●

●

●

PWBRemove the bottom cover.

Unfasten the mnnectors (at six locations).

Remove the PWB holdina screws (at four locati~ns) and the con-nector cover holding scre; (at one place) to remove the PWBS.

? SRN interface PWB

4-5. Removing the operation panel PWB and PEsensor PWB

Remove the upper cover and the tapping screws (at two locations)to remove the operation panel PWB.

Remove the printer mechanism and the screw (at one place) toremove the PE sensor PWB and PE sensor holder as an assemb-ly.To remove the PWB alone, twist the PE sensor holder lug anddetach the PWB from the holder.

Control

Fig. 4-3

Fig. 4-54-4. Removing the power supply PWB and AC

power supply unit1) Removing the power supply PWB

● Unfasten the connectors (at three locations).

● Remove the screws M3x1O (at two locations) and tappingscrews M3x8 (at two locations).

● Remove the PWB while paying attention to the wires.

2) Removing the AC power supply unit

●

●

●

Remove the AC inlet holding screws M3x6 (at two locations)and the ground wire holding screw M4x6.

Remove the power transformer holding screws M4x6 (at threelocations).

Unfasten the connector at the secondary side of the power

4-6.When fixing with the switch panel intedace connector PWB removed,use fixing screw of 3 x 8. If the any other screw is used, it makescontact with the power PWB.

5. Circuit description

transformer to remove the entire power supply unit.

Power supply PWB

Power transformerNoise filter PWB / I

? Osc 7.37MHZOpratlon ,+il~el 7

/ * ROM RAM

CPUm.?. a SRNIIF f \ (MS0734)

Fig. 4-4

5-1. GeneralThe ER-03RP is a remote printer using the SRN (Sharp Retail Net-work) as an external interface through which connected to anelectronic cash register and a POS terminal. (ER-52BR, 3310, 3311,3300, 8700, 4100)The remote printer has a control circuit that consists mainly of a CPU,a ROM, a RAM, and their peripheral circuits, an SRN interface circuitfor interfacing with the host, an operation panel circuit for operationswitch inputs and LED display, a printer mechanism, and a powersupply circuit for supplying necessary power to each circuit.Fig.5-l shows a block diagram of the remote printer.

I I I ., ..I-i Pmer ~VRAM~- r---- . .

AC230V

&,fi

Fig.5-l ER-03RP block diagram

-4-

ER-03RP

5-2. SRN control circuit

1) 1/0 allocationandmemorymappingThe CPU used in the SRN control circuit is a single chip 8-bit C-MOSmicroprocessorwith an external memo~.In addition to general purpose 1/0 ports, the CPU has expansion 1/0PO* externally allocated on the memory space.It has an address space of 64K bytes, w“th a ROM, a RAM, andexternalexpansion 1/0s peripherally manged as shown in the at-tached page.The RAM hasa capacityof 64K bits or 256K bits according to thedestination, the RAM size being checked by software.Data and control commands are transferred to and tiom the SRNthrough the registers in the SRN interface circuit which are allocatedon the memory space.The ROM has a capacity of 256K bits and contains control softwareand CG data for character printouts.

2) CPUperipheralcircuit~The M50734SP CPU is a CPUwithan extemdmemory, and readsthe 8 low-order bits of the address through the AO/DObus lines froman 8-bit latch HC373.The ROM has a capaatyof256K bits, and the RAM 64K bits or 256Kbits. A super capacitor is used to provide backup power in case of apower failure.IC9 (74HCOO) is also operated on the VRAM power supply forstandby control.A ceramic osallator is used as the CPU dock to provide a dockfrequency of 7.37MHz.

7“F ‘74”[00

)

I

I

~

( Qls

Fig.5-2 ROM/RAM circuits

-5-

ER-03RP

3) ConnectionwiththeSRNinterfaceThe control circuit shares the data bus with the SRN interface circuit,and hardware connection is established between them using ~,~, and other control signals.Logic drive power of +5V and SRN bias voltage of +12V are suppliedfrom the power supply unit.The SRN interface circuit is not backed up by the VRAM power.

i f tP

m-075-

04! IWP ~

DATA INIOUT

o~ 2P W’uSRNIIF RnWr COntrok

BNC(Wm-lz) (=606-11)

[lM@s) C#2 IW

mm m

w

I 1m WI

6P . -t- 1w

+5V I I I ●5V

?“~m

,P - s- FWB

(PC6C6.13)

+5V (*N

+24V (IJm

+12V (l WA)

Fig.5-3 SRN interface/printer wntroller signal diagram

Interface sianal descri~tion

1.

2.

3.

4.

5.

6.

7.

mThe SRN interface is reset with a low state of signal. The CPUresets the SRN interface any time through the printer controllerP03 port.

REsffReset signal.~is signal is at a high during the power ready state (when+5Vfie\e is secured) and low otherwise.

m, mSignals for data read/write between the SRN interface and thecontroller.

SRNSSRN interface select signal

DO- D7Data bus

TRRQInterrupt request signal from the SRN interface to the controller

Power supply+5V : Logic drive power +5V*5%, 250mA+12V: SRN line bias circuit power 12V*1 Yo, 150mA

““s 7

m

tmaw120n2 T

Readdata

Writedata

4) Initialresetand powerdowninterruptcircuitIC3 is for generating a power down interrupt and a reset signal. Whenthe supply voltage drops due to a power failure or other cause, thecircuit works to detect the voltage drop and stores necessary data inthe RAM before going into the power down mode.As shown in the timing chart, when Vcc drops to 4.6V at the time of apower failure, the voltage drop is detected, causing the IC to generatea power down interrupt signal, which is sent to the CPU.in response to the interrupt signal, the CPU issues the data and othernecessary information in the buffer to the RAM. This process is com-pieted in about 500msec.Upon mmpieting the execution of the backup sequence, the CPUsends out signal RESET OUT through the port (P37), putting itseif ina hardware reset state to prevent it from operating in an unstabiecondition.Aiso, when the power down process is entered, the watchdog timer iscieared, and WD is issued in 4msec, whiie in about 900msec a powerdown reset is caused, thus providing a tripie faii-safe mechanism,

; 1-4H> w:I

Fig.5-5 Reset and power down interrupt circuit

‘cc(’v)r-Powerdowninterrupt

P37 r’~1RESET OUT

WDWatchdog

timeroutput

Fig.5-6 Timing chm

MB62H149AC gate array timingFig.5-4 SRN interface data write/read timinas

-6-

ER-03RP

5) Printercontrolcircuit1)

2)

3)

4)

5)

When a low state of signal through the port P31 of the CPU, themotor starts to run with timing pulses appearing on the DP line ofCN5.

After the motor statied, printing takes place in synchronism withthe timing that the P port P34 turns from high to low.

Of nine CPU output ports P20-P29 and P30, a low state of puiseis sent at selected ports, and a character is printed with oneenergization of the DOT solenoid against two timing pulses.

Paper feed is done when the port P43 of the CPU goes low at aprescribed timing.

Color change is performed when the port P32 of the CPU goeslow ata prescribed timing.

CPU---

191 1OK-9

CM3 -14 13 P20

CN3 -6

CH3-13CN3-7 1s P23CM3-12 1?,I p24(N3 -4 1s P2S

CN3 -11 19 P26

CN3 -5 20 P27

CN3 -3

,,,,,”:&;‘GpW~ ; ‘CM3 -i 21 ‘ P30

CM3 -.9 22- P31

23 P32+ 4V HRI 3408 i’ 24 P33.-

CN3 - 1s

4s

td4

43CN3 -2

CN3 -17

CN3 -16 XIN

X12UT

CN2 - I

CN2 -2

CN2 -3

CN2 -5

[N? -7

CN2 -4

CN2 .6

CN2 -9

mm $10

[CNTR) P02 62P03 63 I

V55

?!0PI 1

P12

P13

P14

Pl!i

Pls

P17

54 HC14 23 P401 2A p.)

1 I 354 P42

I

I I

~ ~

Fig.5-7 Printer control circuit

1I Control circuitsensor circuit6) Paperend

Fig.5-8 shows reflection typep~otointerrupter is used as the sensor. When the paper is present, Paper end sensor ~ \tPP I

the paper end sensor circuit. A

the light reflected from the paper strikes the phototransistor;, there- 1 v Gu

fore, the collector of the phototransistor is at a low. On the other —.—.—.—.—. Ihand, when the paper runs out, since no light is reflected, the collec- 1 1PHI 1tor is at a high, which causes the input port P40 of the CPU to go !

high, thus informing the paper end state..,i:1.

II I—.—.—.—.—.J

I

IFig.5-8 Paper end sensor circuit

-7-

ER-03RP

7) Interfacecircuitwiththe operationpanelAsshown in Fig.5-9, the operation panel circuit includes switches; anonline switch and a line feed switch. The switches are mnnected tothe respective input ports of the CPU, while the LEDs are connectedto the output ports through the drivers.

Operation panel circuit Control circuitr .—.—.—.—.—.—.—. —.-

r.—.—.—.—.—.—.—.—.

1;

I 1! vc~-

I,

w J

ILED1,, nFQwER

I—

i CPURI

I I(I LED2 ~ON-LINE

“ nR2

PD4

LED3 ~URM 1:.

R3 Ims

i ,=.—OION-LINE A .

Y I T P42

I i;4

-. —. —. —. —. —. —. —.—. J

L .—.—.—.—.—.—.—-—--Fig.5-9 Operation panel circuit

5-3. SRN interface circuit

1) Circuit descriptionThe SRN interface is allocated at the l/O space address, with theprinter controller as the host CPU, and transfers data for interfacingusing seven interface registers.Data is transferred to and from the external devices at IM bps usinga coaxial cable. (RG-58U)

t 1 b I

.? ‘CPUZ-80 DMA

BUSl/F

u

*ROM ADLC

RAM& link MOD.

controllerb

printer controller A

I

I

TIPDriver Receiver

[I

1MbpsI DATA

Fig.5-10 SRN interface block diagram

2)AdjustmentThe duty adjustment of the intedace is carried out in the followingmanner.

1. Set the oscillator.

1MHz P-P 5V Outputimpedance5V

Checkon oscilloscopeOv

LP 1- +o.5ps o.5ps ‘

Fig. 5-11

2. Connect a dummy network to the printer.Connect the oscillator and the oscilloscope as shown below.

[I

@

PG-12VR1

~D @ TP

Oscillator

Dummv networkI

Fig, 5-123. Adjust the VR1 5KQ potentiometer to obtain the following

waveform.

w0.6ps 0.4ps

T1 : 580nsec-620ns~T2 : 380nsec-420nsW

Fig. 5-I 34. Power supply circuit

1)

2)

N

Power supply circuit (secondary side)This power supply circuit supplies the logic drive power of5VDC, the printer mechanism dtive power of 24VRC, and theSRN interface bias circuit drive power of 12VDC. CN2 is mn-nected to the printer control PWB, and CN3 to the SRN inter-face PWB.ICI is a regulator IC of low saturation voltage type which supplies stabilized +5V power to the circuits,The 24V power is stabilized by IC2 with the current boosted bytransistor Q1.The +12V power is created from the 24V power using IC3.The fuse is TlA250V, and protects the 5V power from overcur-rent.

Noise filter circuit (primary side)The noise filter circuit uses a common mode type fiher toeliminate noise generated from the ACpower sup~y as well asradiation noise from the printer and thus assure stable opera-tion of the printer.

,.. . . . . . . .,●

T :- : 1 T ➤ N

‘1 -’- C3222AC IN cl i j j C2 ~

T104 ; :: ~lo4 ~w ACOUT

L /.~ --OL -~ :J T222JI J2 F ‘.........’ ➤ L

NFi=

pLA3021AFig. 5-14

-8-

ER-03RP

6. Printer unit description

6-1. Hints and tips in handling the printer

6-1-1. Hintsin usingthe printer(1)

(2)

(3)

(4)

Do not operate the printer when the printer is not loaded withpaper and ink ribbon. Printing without paper or ink ribbon willdamage the printhead and platen surface, deteriorate the print

quality, and shorten the printer life.

Do not try to move the print head by hand. Since the belt thatdrives the print head is directly coupled with a gear train, the beltand the carnage drive pipe will be subjected to overload whenthe print head is moved by hand, leading to timing misalignmentand other trouble.

Since the printer uses a permanent magnet (in the motor) andan electromagnet, avoid using the printer in a location that maybe subjected to a large amount of iron filings, dust, dirt, etc.

Printed circuit boards are mounted in the bottom of the orinter.Take care so that the printed circuit boards do not c~me incontact with the case or foreign materials do not adhere to theboards.

6-1-2. Hints in storing the printer(1)Do not store the printer in a location where a large amount of

dust or dirt, high temperature, or high humidity is encountered.

6-2. How to load the paperUse paper of prescribed standard.

6-2-1. PaperleadedgefinishCut the paper lead edge straight. (See figure below)If the paper cannot be smoothly taken up by the paper feed roller, foldback the paper lead edge for ease of insertion.

o x

6-2-2.How to load therollpaperLoad the paper as shown below.

Correct

o

Incorect

x

6-2-3. How to load the sprocket paper

6-24. How to removethepaperfromthe printerThe paper can be removed from the printer in any of the followingmethods.

(1) Pull out the paper upward. (For fridion type only)

NOTE: Paper must be pulled straight upward. If pulled slanting-ly, the paper may become jammed in the printer.

\

1““Qllw1I

(2) If the printer is provided with a paper feed knob, pull the knob torelease the shaft, and rotate the shaft to eject the paper. (in thiscase, the paper can be ejected in either direction)

(3) Eject the paper by electrically operating the printer (pressing thepaper feed button with the power ON),

6-3. Hints in using the ribbon cartridgeUse the ribbon cartridge of prescribed specification. If a non-specifiedribbon cartridge is used, problems may arise such as malfunctioningof the wire, deterioration of print quality, etc.

6-3-1. How to installthe ribboncartridge(1)Tghten the ink ribbon by rotating the ribbon cartridge knob

clockwise (arrow direction).

(2) Fit the ribbon cartridge into the ribbon plate (or frame) with theribbon inserted between the ribbon mask and the print head.

(3) After the ribbon cartridge is installed in position, rotate the ribboncatiridge knob once again in the clockwise direction (arrowdirection) to remove the slackness in the ribbon.

6-3-2.Howto removethe ribboncartridgePull up the ribbon cartridge by holding the right or left side of it. Ifthere is difficulty in removal, push the cartridge to the right or left andunlock the hook on one side before pulling up the cartridge forremoval.

6-4. Cleaning(1)

(2)

After using about 10 rolls of paper or after six months of use,clean the printer to remove recording paper dust and dirt. It is

desirable to clean by vacuuming (use a vacuum cleaner).Thoroughly clean eve~ part of the printer by vacuuming dustand dirt.

Use alcohol or benzine to wipe off dirt. Never use thinner,trichlene, or ketone detergents as these may deteriorate ordamage the plastic parts.

Pull the knob outward and manually rotate the sprocket to load thepaper. With the knob pulled outward, the sprocket can be freelyrotated.

-9-

ER-03RP

7. Overview and operating principle of theprinter

7-1. Overview

7-1-1.FeaturesThe DP614 printer is a compact serial dot printer, and has the follow-ing features.

(1) Compact, light weight, and low power consumption.

(2) High speed printing, crisp printing by high reliability 7-pin head,and bidirectional printing method.

(3) Paper insertion in both directions, from the rear and from thebottom. (for friction type only)

7-1-2. Generalspecification1.

2.

3.

4.

5.

6.

7.

8.

Printing methodSerial impact dot matrix printing method

Printing directionBi-directional (unidirectional for graphic printing)

Printing speed3.0 iines/sec. *1 070(At motor voltage +25V, +25*C)

Print format

1) Character matrix 7x7 (including half dots)

2) Dot composition180 (360) dots/lineNumbers in parentheses include haff dots.

3) Print columns and character size40 columns 1,4(W) x 2.4(H)mm

Color changeColor change is accomplished by energizing the color changesolenoid.

1) Voltage: 24ti VDCResistance: 33*3Q (25&)

Paper feed

1) Voltage: 24~~VDC (across solenoid termin~s)Resistance: 33*3Q (25-C)

2) Paper feed pitch 4.23mm (1/6”)2.82mm (1/9”) for graphic type

3) Quick paper feed Approx. 18 lines/see.

Recording paper

1)

2)

3)

Type Friction type: Roll [email protected], (width)$83mm (outer dia.)

Pin wheel type: Fan fold paperWidth 76mm (3”) to 89mm (3.5”)

Kinds of paper Plain paper and non-carbon paper

Recommended paper(Cutform paper) 45-55kg/l 000 sheets (1091x788mrn/sheet)(Copy paper) Non-carbon paperFriction type: One original + one copyPin wheel type: One original + two copies

Inking

9. Motor

10. Printhead

Total thickness 0.2mrn max.

Special cartridge ribbon, red/black two-color or blackmonocolor

DC brush motorVoltage: 24t4 VDCCurrent: Peak current Approx. 1A

Average current 0.2A max.Number of wires:9Wire diameter: 0.3mmWire pitch: 0.353mmSolenoid: Voltage 24*1 VDCResistance: 17Q (25*C)

11. Overall dimensions 137(W) x 136(D) x 63.5(H)mm(5.4”(~ X 5.35”(D) X 2.5(H))

12. Weight Approx. 690g (1,5 Ibs)

13. Reliability Printhead life: 50 million charactersPrinter mechanism: MCBF 2.5 million lines

14. Operating temperature o to +50”C

7-2. Mechanism and operating principle

7-2-1.Outlineof mechanismThe printer mechanism mnsists of the following nine blocks.

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

Frame block

Motor block

Power transmission mechanism block

Sensor mechanism block

Head feed mechanism block

Printhead mechanism block

Paper feed mechanism block

Ribbon mechanism block

Color change mechanism block

7-2-2. MechanismandoperatingprincipleOf the above nine biocks, seven mechanism blocks excluding theframe and motor blocks are described next for their structures andoperating principles.

(1) Power transmission mechanism blockThis mechanism block is disposed en bloc on the right side ofthe printer unit, and consists of a motor pinion fixed to the motorshaft, a reduction gear, and a drive gear, plus four gear trainscoupled to the drive gear, i.e. a head feed gear train, a paperfeed gear train, a ribbon feed gear train, and a ribbon reset geartrain.

Reduction gear

gear

@ Head feed gear trainThis gear train consists of a pulley drive gear, which is drivenby the drive gear, a drive puliey, and an idle pulley. The drivepulley drives a timing belt SA to feed the printhead.

Drive gear

ive gear

ldl~pulley

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Paper feed gear train

This gear tr~n consists of a PF slip gear, which is coupled byfriction to the drive gear, a PF drive gear BK, which is coupledvia a cfutch to the drive gear, a clutch gear BK, a PF reductiongear, and a PF shaft gear, to transmit power to the PF shaft.

Drive gear

\

PF shaft gearPF drive gear BK, /

PF Si

\ PF reduction gearClutch gear BK

@ Ribbon feed gear trainThe gear train consists of a ribbon slip gear, which is coupledby friction to the drive pulley, a ribbon reduction gear, and aribbon drive gear, and works to continuously take up the ribbon

asthe motor rotates.

Drive pulley\

o0

Ribbon slip gea

(2)

@

/ Ribbon driveRibbon reduction gear

Ribbon reset gear train

gear I

The gear train consists of a reset cam drive gear, which isdriven by the drive gear, and a ribbon reset cam. The ribboncassette in the red printing position is returned to the blackprinting position by the rotation of the ribbon reset cam.

Drive gear

Sensor mechanism block

Ribbon reset cam

Reset/

cam drive gear

The sensor mechanism block consists of three sensors, i.e. aDP (dot pulse) sensor, a HP (home position) sensor, and an RP(reset pulse) sensor, and plays an important role in the operationand control of printer mechanism parts.

otor BK

nterrupter)

(3)

(4)

DP (dot pulse) sensor and HP (home position) sensorThe DP/HP sensor block consists of a dot pulse disk directlycoupled to the motor shaft and having equispaced apart 20slits, a DP disk integrally formed with a home position sensorpulse disk having one slit, and photointerrupters solderbound to the mnnector PCB SA and corresponding to therespective disks. A pulse is generated as each slit of the diskpasses the sensor.The dot pulse sensor outputs a signal (DP) which is used tocontrol the print solenoid, paper feed, and mlor change. Onthe other hand, the home pcsition sensor issues a signal(HP) for every 17 DPs (or 20 DPs), and the signal (HP) iscombined with the signal (RP) output from the reset pulsesensor hereinafter described to determine the DP count startposition. No waveform shaping circuit is included in theprinter, therefore, it is requested that the shaping circuit beprovided at the user side.

RP (reset pulse) sensorThe sensor block consists of an RP switch SA which uses amechanical !eaf switch attached on the bottom of the bottomplate BK. As the cm-age passes the switch, the actuator isturned on and off to output a signal (RP). The signaf RP isused as the home position reference signal.

Head feed mechanism blockThe head feed mechanism block consists of the pulley drivegear, which is driven via the drive gear train, the drive pulley, thetiming belt SA (mmprising a timing belt and a carriage drive pin),the carriage, and the idle pulley. me carriage drive pin consistsof beit fixes WB and carriage drive pipes U and L, and is fixed tothe timing belt. When the motor is rotated by a print or paperfeed command, the timing belt SA runs in the clockwise directionto horizontality move the carriage with the carriage drive pipeinserted in the elongated groove of the carriage.When the printing operation is completed, power is shut off tothe motor at a prescribed timing to stop the carriage. At thistime, the head stops at approximately the center position.

Timing

rriage drive pipe L

Tming belt SA

Printhead mechanism biockThe printhead mechanism tinsists of a nose assembiy housingnine wires, a solenoid base comprising soienoids and armaturesfor driving the wires, and a cover for keeping the armaturestroke to a prescribed vaiue.When the selected soienoid is energized for about 450ms insynchronism with the dot pulse, the corresponding armature ispulied into the soienoid. me armature action is transmitted tothe corresponding wire, causing the wire to strike the recordingpaper through the ribbon to produce a dot on it.

HP sensor (photointerrupter)

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(5)

‘TIfl /p”n’ stopper

spring

Nose assembly/ \Solenoid base

Paper feed mechanismThe paper feed mechanism consists of the paper feed powertransmission mechanism described in 2-2-2. (l)-(2), a paperfeed solenoid which controls the clutch mechanism, a PF triggerlever, and a clutch cam. The PF shaft is driven to feed the paper.The clutch mechanism has a spring clutch, consisting of a PFdrive gear BK, a clutch gear BK, a clutch spring, and the clutchcam, to transmit the rotation of the clutch gear BK to the PFdrive gear BK.Two paper feed methods are available for the printer, the frictionmethod and the pin wheel method.

Drive

PF slips

PF shaft PF shaft gear

,=”L\

Paper feed

‘ <isolenoid

;)

5

PF trigger lever.0

PF slip gea’r //o

Clutch cam I \Clutch spring Clutch gear BK

0 Friction type (Type D/P61*-*F*)The friction type consists of two PF rollers fixed to the PFshaft, pressure rollers press-contracting the respective PFrollers, and pressure roller springs applying pressure to therespective pressure rollers. Paper is fed by the friction forceacting between the PF rollers and the pressure rollers, Papercan be inserted either from the rear or from the bottom.

aft

Pressure roller spring

Agear doo

‘u ”Rear

tBottom

(6)

[Paper feed overload protection mechanism]A safety mechanism is provided to prevent gear breakageand motor coil burning due to the motor seizure in caseoverload is applied to the PF shaft because of p~er jam,etc. The PF slip gear is coupled by friction to the drive gearvia the PF slip spring, and is so constructed that when the PFshah is subjected to a greater load than a prescribed torque,it slips on the PF shaft to absorb the overload.

,Side plate R

tve gear

PF slip slip gear

y\Pivot drive gear

[Paper release mechanism]me PF shaft gear is coupled to the PF ratchet fixed to thePF shaft so that the ratchet engagement is released whenthe paper is pulled in the forward direction, thus allowing thepaper to be smoothly pulled out. Also, if a knob is mountedon the PF shafi, the ratchet engagement can be released bypulling the knob outward, thus allowing the PF shaft to befreely rotated. In this situation, the paper can be fed in eitherforward or reverse directions by rotating the knob.

\

PF ratchetPF shaft gear

Ribbon mechanism blockThe mechanism block consists of a ribbon cartridge in which anendless ribbon is housed, a ribbon feed gear train, and a ribbondrive pole SA which is driven by the ribbon feed gear train.When the motor is in rotation, the ribbon drive pole SA is con-tinuously rotated via the gear train, to drive the ribbon gearcontained in the ribbon cartridge so that the ribbon is con-tinuously taken up.

The ribbon drive pole SA is coupled to the ribbon drive gear viaa ratchet, so that it can be rotated freely in the direction in whichthe ribbon is taken up (in the forward direction). Therefore, thecartridge knob can be rotated to take up the ribbon with theribbon cartridge installed in the printer.

Ribbon drive gear-12-

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The two-color ribbon cartridge (D type) is mounted on the ribbonplate, and the mono-color type (M type) on the frame,

Mono-color ribbon cartridge mounted in position

Two-color ribbon cartridge mounted in position

[Safety mechanism]If the ribbon gear binds because of a ribbon jam, the motormay be subjected to overload, causing gear tooth breakage,motor coil burning, and other troubles. To prevent suchtroubles, the ribbon slip gear is coupled by friction to thedrive pulley via the ribbon slip spring, and is so constructedthat it slips in the drive pulley when the r!bbon feed system issubjected to overload.

Drive pull Fixed

Ribbon slip spr

Ribbon slip g

(7) Color change mechanism block (for D type only)The mechanism block consists of a ribbon plate on which tomount a ri~on cartridge, a color change lever, a color changesolenoid, a ribbon reset cam, and a reset cam drive gear.In normal operating condition, the ribbon plate is locked in posi-tion by the lower hook of the color change lever, holdingtheblack ribbon area in the printing position. When the mlor changesolenoid is energized through a red print command, the colorchange lever is pulled in to disengage the lower hook from theribbon plate. The mior change lever swings upward by the forceof the color change lever, hitting the upper hook of the colorchange lever. The ribbon plate is thus retained by the upperhook, setting the red ribbon area in the printing position for redprinting. When the printing is completed, the ribbon plate ispulled downward by the ribbon reset cam, engaged with thelower hook of the color change lever, and reset to the originalposition (black printing position).The timing is so set that the ribbon reset cam will be operatedwhen the printhead is in a non-printing area at the extreme rightor left, to avoid accidental resetting during printing.

or changesolenoid

e lever

Color ch’ange spring -\Ribbon reset cam

[Black printing]

uII in

d printing]

[Resetting]

I

Fixed

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8. Troubleshooting

8-1.Repairing procedureRepairs should be done in accordance with Section 3 “Troubleshoot-ing chart” after acquiring working knowledge of the operating principleand construction of the printer.Also refer to 8-2 “Connector and wiring diagrams” which shouldfacilitate the check and repair work. - -

8-2. Connector and wiring diagrams

8-2-1.Connectordiagram

4286

diagram

Printhead SA

cc~

MA

10 1 17 1

5connector B Connector A

Head FPC

kDP sensor

● 1 J

(Y HP sensor

1 +w~ i(F

Validation (option)

L

Connector C1 SOL4

~ i2 SOL2

3 SOL6

4 SOL6

5 SOL9r

6 + 24V

l[y[6 \ SOL2

I7 + 241’i,

7 Soti

8 + 24VI 8 I +24V

9 SOL? 9 + 24V

)0 SouI I 10 + 24\’

11 Sou

12 SOLI

13 F CND

I Ii

T1$ PF @ii ‘

Connector PCB SA 17 cc on!

I1

1 JL I

l~Jl[’~-T

JRP sensor paper end (op~ion)

-14-

Connector PWB SAUKOG-6669RCZZ

rOcontrol biOck

Tomntrolblock

Wiring diagram

ER-Q3RP

8-3.Troubleshootingchart8-3-1.Headfeedtrouble

Phenomenon Symptom Possible cause Checking procedure RemedyCarriage does not Motor does not run Motor defective Apply rated voltage across soldered Replace motor.move motor leads @(red)and ~(black) on

solder side of connectorPCB SA to &eck if motor runs.

Applied voltage to Check voltage across pin 1 (~) and pin Repair control block.motor not normal 2 (~) of ~nnector A on connector PCB

SA to see if applied voltage is normal.

Connector PCB SA Check for continuity between pin 1 of Replace connectordefective connector A and motor lead (red) and PCB SA.

between pin 2 and motor lead (black).

Motor runs Paper jam Remove printhead and check for Remove foreignjammed paper or foreign matter. matter, etc.

Printhead w“re caught Check if wire gets caught. Replace printhead SA.in ink ribbon or paper (Also replace ribbon

cassette if wire getscaught in ribbon)

Foreign matter caught Manually rotate motor pinion to check if Remove foreignin gear wheel train or gear train moves smoothly. matter, etc. or replacebroken gear causing broken gear.action failure

~ming belt SA and Remove carriage BK and check if I Adjust position ofpulley out of phase carriage drive pin and pulley timing belt SA.

engagement is not out of phase.

Carriage bearing Check if carriage rail (front and rear) is Remove foreigntrouble i lubfi~ted and if ~rriage r~l moves I matter, etc. and apply

i smoothly when turned by hand. oil, or replace carriageBK and carriage rail.

DP/HP/RP signalI abnormal

Check voltage applied to each sensor Repair control block,and its output waveform. Also check replace sensor, orconnector PCB SA for continuity. replace connector

PCB SA.

Carriage does not stop DP/HP/RP signal Check voltage applied to each sensor Repair control block.abnormal and its output waveform. Also check replace sensor, or

connector PCB SA for continuity. replace connectorPCB SA.

Trouble in control block ‘ Check hardware circuit in control block Repair control block orand wiring from control block. rectify wiring.

8-3-2.Printing trouble

Phenomenon Symptom Possible cause Checking procedure Remedy

Cannot print (ail dots Carriage motion is Head FPC connection Check connection of FPC. Firmly insert FPC toor particular dots) normal failure establish proper

connection.

Printhead SA defective Replace printhead SA with a new one Replace printhead SA.and check the result.

Improper mounting of , Check mounting condition of ribbon. ‘ Mount ink ribbon“ ink ribbon I correctly.

DP/HP/RP signal Check voltage applied to each sensor Repair control block,abnormal and its output waveform. Also check replace sensor, or

connector PCB SA for mntinuity. replace connectorPCB SA.

Trouble in control block Check hardware circuit in control block Repair control block orand wiring from control block. rectify wiring.

Connector PCB SA Check for continui~ between cunnector I Replace conne~or

defective A and connector B. (Refer to 8-2. Wiring PCB SA.diagram)

Foreign matter caught Remove printhead SA and check printing Remove foreignin printing area area for foreign matter. matter.

Deformation or Remove printhead SA and check ribbon Replace or properlyimproper mounting of mask for deformation and mounting mount ribbon mask.ribbon mask I condition.

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Phenomenon Symptom ~ Possible cause ~ Checking procedure RemedyPrinted characters too No ribbon feed ~Improper mounting of ~Check mounting condition of ribbon Properly mount ribbonlight ribbon cassette 1cassette. cassette.Ribbon cassette I

! Rotate ribbon cassette takeup knob in Replace ribbondefective ~arrow direction to check knob operation[ cassette.

\ and ribbon takeup condition.Foreign matter caught t Manually rotate motor pinion in direction Remove foreignin ribbon drive ~toward you to check if gear train moves matter, etc. andmechanism or broken ~smoothly. I replace broken gear.gear causing action ~

t I II

Troubie in ribbon slip ~ With ribbon cassette mounted in Replace ribbon slipmechanism ~position, manually rotate motor pinion in mechanism.

~direction toward you to check if inkribbon is taken up properly.

Ribbon feed is normal Improper gap Check gap between printhead and ‘ Adjust gap., between printhead I platen.I and platen

~.

Trouble in control block I Check voltage ~plied from control block Repair control block.~as well as voltage added time.

3i-directional printing Misalignment greater Improper mounting Ii Try to shift RP sensor mounting position Readjust RP sensor.nisafignment than 3.5 columns (17 I to left or right to check if bidirectionaldots) ‘Sition OfRp sensor I prlntlng misalignment is corrected.Misalignment inside of Improper mounting ; Try to shift connector PCB SA forward or Readjust connector9 2 dots (misalignment position of connector ~backward to check if biairectionai PCB SA.inside of 0.3mm is PCBSA ; printing misalignment is corrected.within specification)

I

;-3-3.Paperfeedtrouble

Phenomenon Symptom Possible cause ! Checking procedure RemedyCannot insert paper paper lead edge is ‘ Check that paper lead edge is not bent Insert paper properlybent or improperly cut ~and cut straight. once again.Trouble because of ! Check thickness, width, and diameter of Use paper ofnon-standard paper paper used. prescribed

specification.Trouble because of , Check paper feed route for dust and Remove paper dustpaper dust or foreign ~foreign matter. and foreign matter.matter I

Improper loading of Check if guide holes of paper are Load paper pr.r-,.,.paper on pin wheels I engaged with pin wheels properlyI ‘nnQrlv

(symmetrically and without being-stretched too tight or compressed too

i loose).Paper feed does not PF coil does not pull in G~ between pF coil ~Check gap between Pi mil and PF I Readjust gap betweenoperate at all or fails and PF trigger lever is trigger lever. PF coil and PF triggerto operate sometimes too wide , I lever.

PF coil defective I Check resistance of PF coil. Repiace PF coii.~(Specification: Approx. 30Q)

Connector PCB SA ~Check for continuity between solder part Repiace connectordefective ‘ on connector PCB SA and connector A. PCB SA.Trouble in control biock ~Check hardware circuit in mntrol block Repair control block or

: and wiring from control biock.PF coil puIIs in

I rectify wiring.Trouble be~use of : Check paper feed route and paper

~ioading condition.i Rectify paper feed

paper jam route and ioad paper1I I correctiy.

Gap between PF coil , Check gap between PF coii and PF Readjust gap betweenand PF trigger iever is i trigger iever. PF coii and PF triggertoo smali I iever.Troubie in paper feed ~Check if p~er feed mechanism has not I Remove foreignmechanism ~seized up because of foreign matter or matter, repiace broken

broken gear, or if PF siip mechanism is gear, or repiace PF‘ generating enough force to feed paper.

paper feed pitch siip mechanism.Paper feed pitch too Troubie in ciutchimproper I Check ciutch gear BK, drive gear BK, Repiace defectivegreat mechanism ~and clutch spring for abnormal wear and parts.

I other defects.

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8-3-4.Ribbonfeedtrouble

Phenomenon

No ribbon feed

Symptom Possible cause Checking procedure Remedy

Improper mounting of Check mounting condition of ribbon Properly mount ribbonribbon cassette cassette. cassette.

Ribbon cassette Rotate ribbon cassette takeup knob in Replace ribbondefea”ve arrow direction to check knob operation cassene.

and ribbon takeup condition.

Foreign matter caught Manually rotate motor pinion in directionI

Remove foreignin ribbon drive toward you to check if gear train moves matter, etc. andmechanism or broken smoothly. replace broken gear.gear causing actionfailure

Trouble in ribbon siip With ribbon cassette mounted in Replace ribbon slip

mechanism position, manuaily rotate motor pinion in I mechanism.direction toward you to check if inkribbon is taken up properly.

8-3-5. Color changetroublePhenomenon

No red printing

Mixed coior printing

Symptom Possibie cause

No color change I Maladjustment ofcolor change timing

I

I‘ Maladjustment of CC

=defective

ITrouble in control block

II Maladjustment of! mior change timing

III

Mixed coior printing / \ Ribbn mask sh~e

/1defectiveI

bI faiiure

Checkinq orocedure ! Remedv

With prfnthead positioned at extreme left, ~Realign registrationcheck if registration mark (0) on ribbon ! mark.reset cam is aligned with engagingposition with reset cam drive gear.

+eset cam drive gear Ribkn reset cam ~

With CC lever puiled in CC coii, check ~Readjust gap.gap between ribbon plate and CC lever.

Check resistance of CC roil. I Replace CC coil.(Specification: Approx. 30Q)

Check for continuity between soider part Repiace connectoron connector PCB SA and connector A. PCB SA.

Check hardware circuit in controi block I Repair control blockand wiring from control block. I and rectify wiring.

With printhead positioned at extreme left, / Readjust registrationcheck if registration mark (0) on ribbon mark.reset cam is aligned with engagingposition with reset cam drive gear.

cm

Registrationmark

+ 0+A

Reset cam drive gear Rib&n reset cam

With paper and ribbon loaded in position, ~Replace ribbon mask.carefully move ribbon piate up and down ~to check if ribbon does not catch ribbon ~mask. I

Check if CC lever operates smoothiy. ~Replace parts or~make corrections.

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9. Disassembly and reassembly

Observe the following precautions in maintenance.

~ PRECAUTIONS

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

When the printer is operating satisfactorily, do not try to dis-assemble, reassemble, or adjust the printer mechanismwithout proper reasons. Exercise particular care not to loosenthe mounting screws on each part by accident.

After finishing inspection, always check the parts beforepower-on to confirm that there is no abnormality.

Never try to print without paper and ribbon loaded in theprinter.

Check that the paper is loaded properly.

Care must be taken in maintenance so that parts, saewsused for maintenance will not be left in the printer.

When handling printed circuit boards, avoid using gloves thattend to generate static electricity.

Do not place printed circuit boards directly on the printer orthe floor.

In disassembly and reassembly, check the leads and cordsfor damage and avoid such wiring as to cause strain to them.

9-1. List of maintenance tools1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

Phillips screwdriver (large size) for 3mm size

Normal screwdriver (small size)

Tweezers

Belt tension gauge (dial tension gauge) 100g

Scale

Soldering pencil

Long-nose pliers

Thickness gauge (0.5, 0.6mm)

Lubricating pen

Screw lock paint

Oscilloscope

9-2. Disassembly processDisassemble and reassemble the printer in acmrdance with the fol-lowing disassembly procedure.

I 1. CC (mlor change) coil SA (9-3-1) ~

&

I 2. Ribbon plate BK (9-3-2)

+

3. Printhead SA (9-3-3)

J

I 4. PF (paper feed) coil SA (9-3-4) ~

+I

I 5. Drive gear (9-3-5) /

+t fI 6. CC (color change) lever (9-3-6) ~

I 7. Detent lever (9-3-7)

&I 1I 8. Carrier biock (9-3-8) I

L

I S. Platen BK (9-3-9) /

&

10. PF (paper feed) block (9-3-1o) i

11. Paper pressure roller (9-3-11) i

12. RP (reset pulse) sensor SA (9-3-12) I

+

~13. Connector PCB SA (9-3-13) /

&

~14, Motor BK (9-3-14) /

15. Ribbon feed block\

(9-3-15) ~

16. Timing belt SA (9-3-16) ~

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Parts number reference Figure

1’

///1 - \—L”. — \

\

‘\

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9-3. Disassembly/reassembly proceduresWork on disassembly/reassembly of each block in accordance withthe disassembly/reassembly flow.

NOTE: Reference numerals used in text

(Example) Connector PCB SA(5-2)The reference nume~5-2 indicates the figure number inthe attached drawing (Fig. 9-l). Proceed with work byreferring to the drawing.

9-3-1. Disassembly/reassembly of CC (colorchange) coil SA

f Tools] Phillips screwdriver~Soldering pencil

[Disassembly procedure]

1. Remove the holding screw (5-14).

2. Disengage the cord from the cord holder pawi.

3. Unsoiled the mrd from the connector PCB SA (5-2) using thesoldering pencil.

[Reassembly procedure]Reverse the disassembly procedure.However, the following adjustment is necessary.

IADJusTMENTs1

Move the printhead to the center of the carriage rail so that the CCcoil core contacts the CC lever as shown by (A) in the figure below.Move the CC coil in directions indicated by arrows + and + to adjustthe clearance betvveen the CC lever and the ribbon plate to 0,2-0.5mm.

Scr~w lock

CC coil core

CC lever

9-3-2. Disassembly/reassembly of ribbon plate BK

ToolsPhillips screwdriver

, Tweezers

IDisassembly/reassembly flow]

~CC coil SA (Section 9-3-1) I

Disassembly Reassembly

I!

,

Ribbon plate BK II


1. Remove the CC coil holding screw (5-14) to remove the CC coil.

2. Remove the two mlor change springs (6-2).

3. Disengage the portion A while lifting up the color change lever(6-3), and then, disengage the hinge (portion B) on the right sideof the ribbon plate (6- 1).

Pofiion

Po~ion B

4. Slide the ribbon plate to the right, and disengage the hinge (por-tion C) on the left side to remove the ribbon plate.

[Reassembly procedure]Reverse the disassembly procedure.

NOTE: Take care not to deform the ribbon plate BK when reassem-bling.

9-3-3. Disassembiy/reassembly of printhead SA(Refer to drawing for F type)


:. Remove the flat cable from the connector. Work is made easier ifthe flat cable is removed from the end.

2. With the lock lever released, extract the printhead SA (3-16) up-ward.


NOTE: Check that the flat cable is not in contact with the HP and DPdiscs.

9-3-4. Disassembly/reassembly of PF (paper feed)coil SA (Refer to drawing for F type)

!Tools~Phillips screwdriver: Soldering pencil


) CC coil SA (Section 9.3-1) I

I>

I


L

i! PFcoil SA

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[Disassemblyprocedure]1. Remove the holding screw (5-12).

2. Disengage the cord from the ard holder pawi.

3. Unsoiled the cord from the mnnector PCB SA (5-2) using thesoldering pencil.

[Reassemblyprocedure]Reverse the disassembly procedure.However, the following adjustment is necessary.

=

As shown in the figure below, move the PF coil in directions shown byarrows i- and - to adjust the clearance (B) between the core of thePF coil SA and the PF trigger lever to 0.1- 0.2mm with the tip of thePF trigger lever overriding the clutch cam as shown by (A).

PF trigger lever

2m/m

9-3-5. Disassembly/reassembly of drive gear(Refer to drawing for D type)

ToolsNormal screwdriver (small size)Tweezers

[Disassembly/reassembly flow]

4.

5.

6.

7.

8.

9.

10.

11.

12.

13.

14.

NOTE: The motor pinion is glued to the motor shaft. Removethe motor pinion taking care so as not to bend the motorshaft or ruin the teeth of the motor pinion,

[Reassemblyprocedure]Reverse the reassembly procedure.However, the following adjustments are necessary.

NOTE 1: Check the backlash amount for engagement of the gears.NOTE 2: Use screw lock paint to fix the motor pinion in place.

CC coil SA (Section 9-3-1) I

The following adjustment must be made when reassembling the rib-bon reset cam. Adjust and assemble in acmrdance with the followingprocedure.

0 AS shown in the figure below, move the carriage to the extremeieft end of the frame BK by manually rotating the clutch gear.In this situation, adjust the position so that the “R” cut portion onthe pulley flange faces to the right.

Carriage

II IIFrame~K ~~ u

t

\

portion

Reassembly

Ribbon plate BK (Section 9-3-2) I

Disa&embly

J

Drive gearI

L


1. Remove the E-ring (4-18).

Remove the ribbon reset cam (4-26).

Remove the ribbon reset cam drive gear (4-25).

Remove the E-ting (4-14).

Remove the clutch gear BK (4-12).

Remove the clutch cam (4-11).

Remove the clutch spring (4-13) by rotating it munterclockwise.

Pry off the PF reduti.on gear (4-15) with the normal screwdriver.

NOTE: Take care not to ruin the teeth of the PF reduction gear.

Remove the PF drive gear (4-10).

Remove the drive gear (4-5), PF slip gear (4-6), and PF slipspring (4-7).

Remove the reduction gear (4-4).

Remove the motor pinion (4-3).

Pulley’flange

With the position adjusted in the above step 0, reassemble theribbon reset cam so that the registration mark (0) on the camfaces the center of the reduction pivot.

Reduction pivot center Ribbon reset cam registration

\mark

/

2. Disengage the hook (frame side) of the PF trigger lever spring(4-17), and remove the PF trigger lever (4-16) and PF triggerspring (4-17).

3. Remove the E-ring (4-27).

-21-

ER-03RP

/ADJUSTMENT21

To reassemble the PF reduction gear and the PF drive gear, engageone of the longer teeth of the PF reduction gear with the PF drivegear (as shown by arrow) and push it in until it snaps into place.

Drive gear

Reduction gear /

J

“3$PF drive gear

gear

Motor BK

i

Pull out motor pinion in arrowdirection to disengage it from

Motor pinion reduction gear

Adjusting direction

Reduction gear

Ad

/Adjustment/

Reassemble the PF trigger lever with the hook A of the PF triggerlever spring engaged with the frame.Next, engage the hook B of the PF trigger lever spring with the PFtrigger lever using tweezers or other appropriate tool.

Ac~, Frame

Engaged with hook B

Lleverspring0 ~ Of PF trigger

Hook A

I

7

\,

K

/

PF trigger lever sp’ring PF trigger lever

]ADJUSTMENT41

After reassembly, make test printing, and if misalignment is noted inbi-directional printing, make the adjustment in accordance with thefollowing procedure.

<Procedure>Adjust the reduction gear engagement with the motor pinion sothat no misalignment occurs in b~direotional printing. ‘

eMethod of adjustmentMake adjustment in accordance with the table and figures below.

Phenomenon Methodof adjustment

H H H-----H —Adjust engagementwith thereduction gear by rotating the

H H H-----H — motor pinion in direction shownby arrow A in the figurebelow.Adjust engagement with the

H H H-----H — reductiongear by rotating theH H H-----H — motor pinion in direction shown

by arrow B in the figure below.

Motor pinion

B

9-3-6. Disassembly/reassemblyof CC (color change)lever

ToolsI Tweezers


~Drive gear (Section 9-3-5)


J

I CClever1]


1. Disengage the hook of the CC lever spring (6-4) from the frame(l-l).

2. Remove the CC lever (6-3) and CC lever spring (6-4).

[Reassemblyprocedure]Reverse the disassembly procedure.

NOTE: As shown below, hook up the CC lever spring to the CCspring retention hole of the frame BK, and check that the CC[ever moves lightly with the CC spring force.

- 22%

ER-03RP

9-3-7. Disassembiy/reassembiy of detent iever

ToolsTweezers

IDisassembly/reassemblyflow]

Drive gear (Section 9-3-5)

IDisassembly Reas~embly

[1Detent lever

[Disassemblyprocedure]1. Disengage the hook of the detent lever spring (4-9) from the frame

(l-l).

2. Remove the detent lever (4-8) and spring.


NOTE 1:As shown below, hook up the detent lever spring to thesquare spring retention hole of the frame BK, and checkthat the detent lever moves smoothly.

Detent lever

[Reassemblyprocedure]Reverse the disassembly procedure,

4-3-9. Disassembly/reassembly of platen BK

ToolsPhillipsscrewdriverNormalscrewdriver(smallsize)Long-nosepliersThicknessgauge

[Disassembly/reassemblyflow]I

Printhead SA (Section 9-3-3) IL 1

“rReassembly

Carrier block (Section 9-3-8) I

\Disassembly

J

II Platen BK ~1

[Disassemblyprocedure]1. Remove the paper pressure SA (2-2) by pushing the holding

pawls in arrow direction using the normal screwdriver.

Detent lever spring position

NOTE 2: For graphic type, reassemble the above before reassem-bling the PF shaft BK.

9-3-8. Disassembiy/reassembiy of carrier biockr

~Toolsj TweezersI Normal screwdriver

Holding pawls


~Printhead SA (Section 9-3-3) 1L

IDisassembly Reassembly

ei Carrier block

[Disassembly procedure]1.

2.

3.

4.

5.

Move the carriage BK (3-1) to the center of the printer carriagerail, and remove the E-ring holding the carriage rail (3-12) at theplaten side.

Pull out the carriage rail (3-12) to the left.

Remove the carriage BK by lifting up its front side.

Remove the E-ring (3-13) holding the carriagerail (3-12) at themotor side.

Pull out the carriage rail (3-12) to the right.

SA

2. Remove the two holding screws (3-15).

3. Remove the platen BK in frontward direction.


NOTE 1:

NOTE 2:

NOTE 3:

NOTE 4:

Fit the guides of the platen BK onto the projections (onright and left sides) of the side frame to reassemble it inplace.

Set the platen BK in the position where the widest headgap is achieved, and temporarily fix it there with holdingscrews.

When reassembling the paper pressure SA into the frameBK, make sure that the holding pawls firmly engage theframe BK.

Remove the ribbon mask (3-2) before reassembling thecarriage BK in position.

The following adjustment is necessary after reassembly.

-23-

ER-03RP

IADJUSTMENTI

Measure the gap between the printhead and the platen with thethickness gauge, and move the platen BK back and forth to adjust thegap to 0.55mrn#.05mm at right and left ends as well as at thecenter.After the adjustment, tighten the holding screws to firmly fix the platenBK in place.

NOTE: Fit the ribbon mask after the above adjustment.

9-3-10. Disassembly/reassembly of PF (paper feed)block

1~ToolsI Normal screwdriver (small size)I Long-nose pliers/ Tweezers


1, CC coil SA (Section 9-3-I)

‘rReassembly

I ‘FcoilsA(section9-3-4) I

Disassembly

J

I PF shaft BK


i.

2.

Qw.

4.

Remove the E-ring (2-8) holding the PF shaft BK (2-5).

Push the bearings (gearwheel train side) instalied on the right andieft sides of the frame (1-1) toward the inside to remove the PFshaft BK (2-5), PF shaft washer (2-7), PF shaft bearing (2-6), twopin wheel washers (2-3) (for P type), and two pin wheels (2-13)(for P type).

Using the long-nose pliers, unbend the crimped edges (four loca-tions) of the side frames holding the rear plate (2-4) and removethe rear plate (2-4).

Remove the pin wheel guides (2-14, 2-15) and the lock levers(2-16, 2-17).


NOTE 1:

NOTE 2:

NOTE 3:

NOTE 4:

Observe the direction in which to assemble the pin wheelwashers. (For P type only)

Instail the pin wheels to the PF shaft so that the pins on theright and left pin wheels are aligned with each other.

Check to ensure that the PF shaft bearings move Iightiyand smoothly.

Observe the direction in which to assemblethewashers.

PF shaft bearing

Washer

4-3-Il. Disassembly/reasSernbly of paper pressurerollers

!Tools~TweezersI Normal screwdriver

IDisassembly/reassembly flow]r

~ Printhead SA (Section 9-3-3)I

L

‘rI

Reassembly\

1

I Carrier block (S&tion 9-3-8) I

~’Disassembly

L1j Paper pressure rollers

II

[Disassemblyprocedure]1. Remove the two paper pressure rollers (2-3) from the paper pres-

sure roller springs (2-4) using the tweezers.

2, Insert the normal screwdriver to extract the spring upward.

[Reassembly procedure]Reverse the disassembly procedure.However, the following adjustment is necessary.

IADJUSTMENT I

A shown in the figure below, Iightiy press the center of the paperpressure roller in the arrow direction using the normal screwdriver tosee if the pressure roller moves parallel. If the balance is not good,bend the pressure spring retainers on the bottom plate in the arrowdirections (~) to adjust the balance.

Bend retainers [n arrow directions to adjust spring balance.

43-12. Disassembly/reassembly of RP sensor SA

I ToolsI Phillips screwdriver


1. Remove the holding screw (5-1 6).

2. Disengagethe wrd fromthe mrd holder pawi.

3. Unsolder the mrd from the connector PCB SA (5-2) using the

soldering pencil.

\ Q-24-

ER+3RP

[Reassemblyprocedure]Reverse the disassemblyprocedure.However, the following adjustments are necessary.

[Disassemblyprocedure]1. Unsolderthe red and blackmotorleadsfromthe connectorPWB

SA(5-2)usingthe solderingpencil.

2. Removetwoholdingscrews(5-lo)./AOJUSTMENTII3. Remove the connector PCBSA(5-2),

Adjustmentof bidirectionalprintingmisalignment

<Procedure>Movethe RP sensor SA to the right or left to adjust so that nomisalignment occurs in bi-directional printing.

[Reassemblyprocedure]Reverse the disassembly procedure.However,thefollowingadjustmentsarenecessary.

IBEFOREOperatiOnalH H H H------H —Replacementof diode(forprintingspeedadjustment)on PWB

H H H H ------H ~ <Procedure>Make sure to replace the diode with a new one when the PWB isreplaced.<Method of adjustment

Make the adjustment in acmrdance with the following table.NOTE 1: If this procedure is not observed, it may not be possible

to satisfy the specification with regard to the printingspeed.

I Phenomenon I Method of adjustment I

;+ H 1+-----H — Move the sensor SA to the rightI (toward the drive gear).~ H h’----- ;H — ,

NOTE 2: Observe the polarity of the diode.

~ADJUSTMENT 11

p; u ~-..-.-~ — Move the sensor SA to the left

;H H E -----,H — (toward the home position).

Adjustment of bi-directional printing misalignment

<Procedure>Move the connector PWB SA back and forth to adjust so that nomisalignment occurs in bi-directional printing.

IADJUSTMENT 21 H H H H------H —RP/HP waveform adjustment

<Procedure>Measure the relationship between the RP waveform and the HPwaveform on the oscilloscope when bi-dir~tibnal printing is made.

H H H H------H —<Method of adjustment

Phenomenon Method of adjustmentI

RP OFFON I

OFF8 H H H-----H — I Move the PWB SA foward

H H H-----H — (toward the platen).

HP

H H H-----H — Move the PWB SA rearwardH H H-----H — (awayfrom the platen).

DP -](----------%------------]

IADJUSTMENT2[<Check points>RP waveform — Pin @ of connector CNBHP waveform — Pin @ of connector CNBGND — Pin Q) of connector CNB

RP/HP waveform adjustment

<Procedure>Measure the relationship between the RP waveform and the HPwaveform on the oscilloscope when bi-directional printing is made.

<Method of adjustmentMake the adjustment in accordance with the following table.

I Value of A I Method of adjustment IRP OFF

ON/. OFF

I 5ms and lowerMove the sensor SA to the left (toward thehome msition). I -u.A

I J

t5- 8ms \ No adjustment necessary

ems ~d over f Move the sensor SA to the right (toward theI dr’ivegear).

I I

HPbT

nl( %----------.-----------DP

<ChecbAfter the adjustment, check to ensure that no misalignment occursin bidirectional printing.

<Check points>RP waveform — Pin @ of connector CNBHP waveform — Pin @ of connector CNBGND — Pin Q) of connector CNB

9-3-13. Disassembly/reassembly of connectorPWB SA

ToolsPhillips screwdriver

I Soldering pencil

-25-

ER--O3RP

<Method of adjustment> <Method of adjustmentAdjust the diode (for printing speed adjustment) on the connectorPCB SA so that the cycle A comes within the range shown in theValueofA Methodof adjustment

5msandlowerMove the PCB SA forward (toward theolaten~.

table below.

I Model I Vaiue of A I Method of adjustment5- 8ms I No adjustment necessary I I DP-610 ~500ms - 555ms I Value of A is smaller than the

8ms and overMove the PCB SA rearward(awayfrom theplaten). I \ I

I

DP-612 ~ 602ms - 634msspecified range: Use diode of greatercapacity.

<Check 1> After the adjustment, check to ensure that no misalign-ment occurs in bidirectional printing.

<Check 2> Check to ensure that the flat cable is not in contact withthe HP and DP disks whenthe printheadSAismoved tothe extreme right end.

I DP-614 ~649ms - 794ms I Value of A is greater than the$ 4

specified range: Usediode of smallerDP-617 ~844ms - 925ms capacity.

9-3-15. Disassembly/reassembly of ribbon feedblock9-3-14. Disassembly/reassembly of motor BK

IDisassemblylreassembly flow]ToolsNormal screwdriver (small size)

~CC coil SA(Se~ion 9.31) I

iReassembly[DiSssembiy/reassembly flow]

CCcoilSA (Section 9-3-1)~Ribbn plate BK (Section 9-3-2) I

Reassembly

Ribbon plate BK (Section 9-3-2) I ~Motor BK (Section 9-3-14) !

IDisassembly

L

Motor BK]

Disassembly

JII 11

II Ribbn feed block II

[Disassemblyprocedure] [Disassembly procedure]

1. Extract the ribbn drive pole SA (4-24) upward.

2. Extract the ribbon drive gear (4-23).


1. Remove two holding screws (4-2).

2. Removethe motorBK (4-l).

[Reassemblyprooedure]Reverse the disassembly procedure.

NOTE: Use screw lock paint to fix the motor pinion in place.However, the following adjustment is necessary. 9-3-16. Disassembly/reassembly of timing belt SA

IADJUSTMENT1 ToolsPhillips screwdriverNormal screwdriver (small size)TweezersTension gaugeScaie

Printing speed adjustment

<Procedure>Measure the cycle A of the RP waveformon the oscilloscopewhen bi-directional printing is made.

RP

1-A

-1


Printhead (Section 9-3-3)

cCheck points>RP waveform — Pin @ of connector CNBGND — Pin Q) of connectorCNB

Reas~embiy

IMake the adjustment under the followingconditions.

Carrier block (Section 9-3-8) 1Ribbon cassette:

Paper:

Motor driving voltage:

Ambient temperature:

Continuous printing

Loaded

Loaded

+24V#

Room temperature

Disa~embly I

I1

iI Tming belt SA

-26-

ER-03RP

[Disassemblyprocedure] /ADJUSTMENT/1.

2.

3.

4.

5.

6.

7.

8.

Remove the E-ring(4-22),

Remove one or two adjust washers (4-21).

Remove the pulley drive gear (4-20).

Remove the two pulley flanges (3-7) by spreading them outwardly.

Remove the timing belt SA (3-4), idle pulley (3-6), driie pulley(3-9), ribbon slip gear (3-1O),andribbonslipspring(3-11).

Remove the ribbon reduction gear (4-19).

Remove the screw (3-8) (M3x4) holding idle pulley @ateBK.

Remove the idle pulley plate BK (3-5).

[Reassemblyprocedure]Reversethedisassemblyprocedure.

NOTE 1:

NOTE 2:

Installation of idle pulley BKTemporarily fix the idle pulley BK with the holding screw(M3x4) after ensuring that the projection on the frame SA isfitted into the hole of the dle pulley BK.

Installation of timing belt SAAs shown in the figure below, position the idle pulley andthe drive pulley with their cut portions facing outward, andinstall the pipe of the timing belt SA by fitting it onto the cutportion. The pipe must be installed with its longer portionpointing up.After installation, rotate the timing belt in one turn to ensurethat the belt moves smoothly.

Pipe

Tming belt SA

Pulley cut portion Mm

Idle ~ullev u

Hole(fulcrum)i

w

Idle pulley BK

● Adjustment of timing belt tensionWith the pipe of the timing belt SA fitted onto the cut portion (seethe figure below), apply load to the center of the timing bait.Adjust the belt tension by movingthe idle pulleyBK so that theportion of the belt on which the dial tension gaugeis pressed sagslmm when a pushing force of 40g is applied.After the adjustment, tighten tfi’ holding screw tightfy.

Diaitensiongauge

//

u \Scale

9-4. Lubrication

9-4-1. Lubrication timeSince the printer is maintenance free, lubrication is not necessary inusual use of the printer. However, lubrication is necessary at the timeof disassembly, reassembly,

9-2-2. Kinds of oil(1)Muitemp PS.NO.1

(2) Floil 946P

(3) Epinoc Grease AP

9-4-3. Oil quantityLarge quantity ... ... ...

Adequate quantity ... ,.0,.,

Small quantity ... ... ...

and cleaning of the printer.

... ... ... Maker: Kyodo Yushi

... ... ... Maker: Kanto Kasei

... ... ... Nippon Oil

Generous amount

Approx, 3 to 4 drops. Approx. 0.2mmthickness in the case of grease.

Approx. 1 drop. Approx. 0.1mm thick-ness in the case of grease.

9-4-4. Lubricating spotsRefer to the attached drawing and the lubrication table on the foiiow-ing page.

-27-

ER-03RP

9-4-5. Lubrication table ... Also refer to theattached drawing for D type.

Arrownumber I Lubricating spot Kinds of oil I Oil quantity

I1 Lubrication time Notes

1

1 4-16 Mounting pivot Multemp ~Adequate r At replacement, ,

2 4-8, 4-15 Mounting pivot Multemp j Adequate At re~lacement I!

3 I 4-10, 4-11,4 -12,6-3 Mounting pivot I Multemp ~Adequate I At replacement I II~4.5, 4.6, 4.7, 4-26 MOUntingpivot4, I Multemp ~Adequate At repla~ment I 1

5 4-4,4-25 Mounting pivot I Multemp 1Adequate At replacement ~

6 4-20 Mounting pivot ~Multemp Adequate At replacement i

7 4-19 Mounting pivot Multemp Adequate At replacement ~

8 I 4-23,4-24 Mounting pivot Multemp \ Adequate , At replacement \

9 I 4-26 Cam on reverse side ] MuitemD I Adeauate i At replacement I I10 4-10,4-12,4-13 Joint (3 locations) ~Epinoc Large I At replacement I I11 4-11 Circumference I Multemp Adequate \ At replacement

12 4-5, 4-6,4-7 Joint (3 locations) I Multemp I Large I At replacement I I13 3-12 Surface Multemp Adequate 1At replacement 1

14 3-3. Entire face Floil 946P Large At replacementandcleaning

z ,

15 3-4 Carriagedrive pipe surface Multemp Small At replacement Do not apply to timing belt.

16 4-23 Inside (ratchet) Multernp Adequate At replacement

17 3-9, 3-10, 3-11 Joint (3 locations) Multemp Large 1At replacement

18 I 3-6,3-7 Mounting pivot Multemp I Adequate At replacement,

19 ~2-5 Bearing mount and PF ratchet (3 locations) Multemp I Adequate I At replacement

20 I 6-1 Sliding portion (4 locations) ] Multemp ~Adequate ] At replacement \ I

-28-

ER-03RP

..\ k’ o1,

/{

. .

‘\

-29-

ER-03RP

10. Test function (SWI-7: ON)

To execute the test function, first turn power off, set the switch SWI -7to ON, and then turn power on. The operation initiates the executionof the test as set by SWI -2, SW1-3, and SWI-4.

10-1. ROM/RAM test (SW1-2:ON, SW1-3:ON,SW-1-4:ON)

A sum check of the ROM and a read-after-write test on a particulararea of the RAM are performed.The RAM is tested with respect to the command/data buffer area.80H bit shift pattern is used as the write data.(80H + 40H + 20H ......01 H + 80H)After the test is completed, the following printout is produced.The sum data and the version of the ROM are printed out.

123456789012345678901 234

ROM TEST OK 2418 V ER. 1 .0

~ RAM TEST OK ( 3 2KB)

(Paoer feed)

123456789012345678901 234

ROM TEST NG FF E 3 V ER. 1 .0

RAM TEST NG ( 8KB)

(Paer feed)

The RAM size varies a~ording to the destination.The RAM size is checked upon power-on to automatically set 8KB or32KB whichever used.The RAM size type is printed starting on the 13th column on the RAMtest resultprintline.After the printing is completed, the buffer area is initialized.For the RAM verify test, 64 bytes of object codes on the ROM istransferred to a particular area on the RAM.

10-2. Host terminal emulation mode (SWI-2:OFF,SW1-3:ON, SW1-4:ON)

The SW3 status is read, and with the read value as the receivingstation address, a printout commantidata packet is created andtransferred to the remote station. At this time, the transmitting stationaddress remains as previously set.

12345678901234567890 1234fI SRN TEST FROM 1 BH TO 2CH i

Printout on transmittingstation printer (blackprinting)

Printout on receiving station printer by printout packet from transmit-ting station

123456789012345678901 2345678901234Black

/SRN S END T EST FROM 1 Bii TO 2 CH 0001 printing

I Transmittingstationaddress

One packet is carried on one line, and a flag is set on the final packet.If a transmit error status is returned from the SRN interface, the datawill be re-transmitted. If the transmission failed at the third try, thestatus returned from the SRN interface will be printed out to terminatethe test.

12345678901234567890123456789012

~SRN STAT US 10010000 COMMA N D 11 H] Btackprinting

status Identificationcodeofcommandthat causederror

When ACK or NAK is returned, the following printout is produced.

123456789012345

IR S 1 =OOH RS2 = 9 9 H] Blackprinting

(RS1 is the 28th byte of status information, and RS2 the 29th byte)

When the ahve printout is produced, the counter is incremented andthe next packet is transmitted. The interval between packets is about3 seconds.

10-3. RAM verify (SWI-2:ON, SW1-3:OFF,SWI-4:ON)At the end of 7-1. ROM/RAM test, the copy data in the verify area iscompared with the original ROM data, and the result is printed out.

12345678901 23

iR A M VERIFY O K i Blackprinting

Or

12345678901 23

iR A M VERIFY O K I Blackprinting

10-4. Dip switch read test (SWI-2:OFF, SW1-3:OFF,SW1- 4:ON)

The switch values are read and printed out.

123456789012345678901234567890123458 1 2345678IIswl o N ON ON o N OF F ON ON ON

ISW2 ON ON ON ON ON ON ON ON ,

1SW3 O F F O F F O F F O F F O F F ON ON ON J

10-5. Printout test (SW1-2:ON, SW1-3:ON,SW1-4:OFF)

All internal character codes are printed in a black matrix pattern oneat a time. After that, a partial cut is performed, and the same contentsas the first ones are printed out in red.The above cycle of operation is repeated endlessly.The program can be terminated only by turning power off.

10-6. SRN flag continuous transmission(SWI-2:OFF, SWI - 3:ON, SW1-4:OFF)

The SRN interface is reset, and the flag pattern mntinuous transmis-sion diagnostic (diagnostic 3) is carried out, No printout operation isperformed in this test.The program can be terminated only by turning power off.

10-7. SRN packet continuous transmission(SW1-2:ON, SW1-3:OFF, SW14:OFF)

The SRN interface is reset, and the packet continuous transmissiondiagnostic (diagnostic 4) is carried out. No printout operation is per-formed in this test.The program can be terminated only by turning power off.

-30-

7-8. Line inspection program (SW1-2:OFF, 5) Insert the connectors(which

SWI-3:OFF, SW1-4:OFF) to the UKOG-6669RCZZ.

Thediagnosticprogramsof the printerare sequentiallyperformedto .*test the hardware functions.

(Testsequence)

(1) Printout test

(2) Dip switch read test

(3) ROM/RAM test

(4) Host terminal emulation mode

The line inspection program can be terminated by turning power off.Host terminal emulation mode (4) is continuously performed until thepower is turned off.

11. Special service tool

11-1.Disassembly of the control PWB and the SRNinterface PWB

1)

2)

3)

4)

Remove the rear cover.

Disconnect all the connectors. (7 positions)

Remove the four fixing screws of the PWB and one fixing screw ofthe mnnector cover. Then the PWB’Scan be removed.

Attach the UKOG-6669RCZZ to the ER03RP body so that it

ER-03RP

weredisconnectedinprocedure1))

comes in the position of the printer control PWB. Use the screwremoved in procedure 1) for fixing.

8

? ?

f

-31-

“-m-03Rp

11-2. ER-03RP Service Tools connection

AUIO Pnntel

PE sensor cutter controlCN~m&-j o

CN8 CN7 CN6

n

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SHARPCOPYRIGHT ~ 1990 BY SHARP CORPORATION

All rights reserved.Printed in Japan.

No pan of this publication may be reproduced,

stored in a retrieval system, or transmitted,in any form or by any means,

electronic, mechanical, photocopying, recording, or otherwise,without prior written permission of the publisher.

SHARP CORPORATIONInformation SystemsGroupQuality & Reliability Controi CenterYamatokoriyama, Nara 639-11, Japan

1990June Printed in Japan @

er+3rp sharp servicemanualdiagramas.diagramasde.com/otros/er03rps.pdf · er43rp 1. general the...

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