plasma panel monitors triage & troubleshooting …diagramasde.com/diagramas/otros/sony plasma...

52
Plasma Monitors Models: PFM42V1 PFM42X1 FWD42PV1 FWD50PX1 FWD50PX2 Triage and Troubleshooting Course: PDP-04 TTS Guide Plasma Panel Monitors Triage & Troubleshooting Guide PFM42V1 PFM42X1 FWD42PV1 FWD50PX1 FWD50PX2

Upload: vanquynh

Post on 14-Mar-2018

230 views

Category:

Documents


5 download

TRANSCRIPT

Plasma Monitors Models:PFM42V1PFM42X1FWD42PV1FWD50PX1FWD50PX2

Triage and Troubleshooting

Course: PDP-04

TTS Guide

Plasma Panel MonitorsTriage & Troubleshooting Guide

PFM42V1PFM42X1 FWD42PV1 FWD50PX1 FWD50PX2

PDP-04 i

Panel Distortion Diagrams ................................................. 20

FWD42PV1 Triage & Troubleshooting .............................. 24Overall Component Block Diagram ................................... 24PCB Location Diagram ...................................................... 25Triage Chart ....................................................................... 26FWD-42PV1 VS, VA, -Vy, Vsc Adjustments ....................... 27FWD-42PV1 YDT & YDB Resistance Check ..................... 28Panel Distortion Diagrams ................................................. 29

FWD50PX1 Triage & Troubleshooting .............................. 33Overall Component Block Diagram ................................... 33PCB Location Diagram ...................................................... 34Triage Chart ....................................................................... 35FWD-50PX1 Vsus & VADR Check .................................... 36FWD-50PX1 YDT & YDB Resistance Check ..................... 37Panel Distortion Diagrams ................................................. 38

FWD50PX2 Triage & Troubleshooting .............................. 42Overall Component Block Diagram ................................... 42PCB Location Diagram ...................................................... 43Triage Chart ....................................................................... 44FWD-50PX2 VS, VA, -Vy, Vsc Adjustments ....................... 45FWD-50PX2 YDT & YDB Resistance Check ..................... 46Panel Distortion Diagrams ................................................. 47

General PFM & FWD Plasma Monitor Information ............ 2General Plasma Panel Block Diagram ................................ 2

Service Modes and Adjustments ..................................... 3Accessing & Navigating Service Modes .............................. 3

PFM42V1, PFM42X1, FWD42PV1, FWD50PX2 ........... 3FWD50PX1 .................................................................... 4 Place unit in Standby Mode ..................................... 4

Board Replacement & Adjustments ................................. 5Power Supplies ................................................................ 5

G-Board ............................................................................... 5Ysus Board .......................................................................... 5Plasma Panel Voltage Label ................................................ 5

PFM42V1 Triage & Troubleshooting ................................... 6Overall Component Block Diagram ..................................... 6PCB Location Diagram ........................................................ 7Triage Chart ......................................................................... 8PFM-42V1 VS, VA, -Vy, Vsc Adjustments ............................ 9PFM-42V1 YDT & YDB Resistance Check ........................ 10Panel Distortion Diagrams ..................................................11

PFM42X1 Triage & Troubleshooting ................................. 15Overall Component Block Diagram ................................... 15PCB Location Diagram ...................................................... 16Triage Chart ....................................................................... 17PFM-42X1 VS, VA, -Vy, Vsc Adjustments .......................... 18PFM-42X1 YDT & YDB Resistance Check ........................ 19

Table of Contents

PDP-04 2

General PFM & FWD Plasma Monitor Information

Control Board

X-Board X-Board

Ysus-Board Zsus-Board

(Address Board)

(Scan Board)

RGB/YUV Input

DVI Input

Audio Input

(Address Board)

X-Board X-Board(Address Board) (Address Board)

COF (Chip On Film)

FPC (Flexible Printed Circuit)

FFC (Flat Flexible Cable)

IC IC IC

IC

IC

IC

IC

FFCFFC

Audio Input

Plasma Panel

Address boards for Dual Scan Models

No ConnectionFWD50PX2

Model

FWD50PX2 Model Only

PFM 4 ICsFWD 1 IC

A-Board

IC

Points for Disconnection

FWD Only

PFM Only

General Plasma Panel Block Diagram

PDP-04 3

General Information

Service Modes and Adjustments

Accessing & Navigating Service Modes

PFM42V1, PFM42X1, FWD42PV1, FWD50PX2 ENTER → 1 → 8 → 2Use the Right & Left arrows to scroll through the main service mode categoriesUse the Up/Down arrows to scroll through the sub category itemsUse the ENTER key to select and adjust a particular item

ASI510-Main- Contrast - Gamma-G- Bright - Gamma-B- Sharp-Y - Noise- Sharp-C - Black Expo- Gamma-R - White Expo

- Contrast - Gamma-R- Bright - Gamma-G- Sharp-Y - Gamma-B - Sharp-C

ASI510-Sub

- Contrast-R - Bright-B- Contrast-G - Clock- Contrast-B - Phase - Bright-R - Auto- Bright-G

ADC

- PC CutOFF - CONTG- PC Gain - CONTB- DTV CutOFF - ERTR - DTV Gain - ERTG- CONTR -ERTB

AD Calibration

- Contrast -IFC- Bright - CBW- Staturation - LDLY - Hue - YOF- Bright-CIP -LPF2- Bright-CIP -PFC-SATUR-CIP -PK-TINT-CIP -DVCO

UPD64012

- MDIN-CONT - MDIN-SATUR- MDIN-BRT - BOOST- SURROUND - BALANCE

Audio

- COLOR TEMP -SUB-GAIN-R-GAIN - SUB PK- G-GAIN - SUB PFS - B-GAIN - SUB CHROMA- R-OFFSET -SUB SHARP-G-OFFSET -SHARP THRD-B-OFFSET -LARGE EDGE-SUB-OFFSET -PBPR BAL

White Balance

- EEPROM INIT - Model No.- Except WB - Fill 0xFF- Only WB Init -S-Init Good- Elapsed Time - Serial Mode- Serial No.

Initalization

- AGING ON/OFF - FAN ON/OFF- INIT GOOD

For Test

- S-INIT GOOD- FAN FOR TEST- SELECT RS232

For Sony

- REFER.SAVE -SENSOR3- SENSOR1- SENSOR2

Temperature

- PC -DVI- Video -Copy WB Data- DTV

WB Default Data

A

A

PDP-04 4

General Information

FWD50PX1

Place unit in Standby Mode Press DISPLAY → 5 → VOL + → POWERUse the Right & Left arrows to scroll through the main service mode categories

- EEPROM Initialize- Chroma Decider- AD Converter- White Balance- General- Manual Control - Preset Edit- Service Staus

Service Mode

A/ D Converter AdjustmentWhite Balance Adjustment

Adjustments per Repair & Board Replacement

When any repair related to picture quality is perfromed - White Balance

When B board and/ or it’s peripheral is replaced - AD Converter

When PDP is replaced - White Balance

When Q board and/ or it’s peripheral is replaced - AD Converter

PDP-04 5

General Information

Use the Up/Down arrows to scroll through the sub category itemsUse the ENTER key to select and adjust a particular item

Board Replacement & Adjustments

G-Board – Adjustment VA, VS per the levels indicated on the label located on the rear of the Plasma panel. Input and display a Full White raster for adjustment.Ysus Board – Adjustment VA, VS, Vsc, -Vy per the levels indicated on the label located on the rear of the Plasma panel. Input and display a Full White raster for adjustment.Zsus Board – Adjustment VA, VS per the levels indicated on the label located on the rear of the Plasma panel. Input and display a Full White raster for adjustment.Address Board – Adjustment VA, VS per the levels indicated on the label located on the rear of the Plasma panel. Input and display a Full White

-Vy Vsc

VA VS

Label located on the back of the PDPraster for adjustment.Control Board - Adjustment VA, VS, Vsc, -Vy per the levels indicated on the label located on the rear of the Plasma panel. Input and display a Full White raster for adjustment.Plasma Panel – Adjustment VA, VS per the levels indicated on the label located on the rear of the Plasma panel. Adjust White Balance and AD Calibration per the procedure found in the unit Service Manual. Input and display a Full White raster for adjustment.A or B Board – Adjust White Balance and AD Calibration per the procedure found in the unit Service Manual.Voltage Checks

Power Supplies

G-BoardVA – Reference label on the rear of Plasma Panel for correct voltage level (Input and display a Full White raster for adjustment)VS – Reference label on the rear of Plasma Panel for correct voltage level (Input and display a Full White raster for adjustment)Standby 5V Operating 5V

Ysus BoardVsc – reference label on the rear of Plasma Panel for correct voltage level-Vy – reference label on the rear of Plasma Panel for correct voltage level

Plasma Panel Voltage Label

PDP-04 6

PFM42V1 Triage & Troubleshooting

Display Panel Assembly

Power to all Panel Assb. PCBs

PowerAudio

Video

A-BoardG-Board

Power Supplies

Video Processing Audio Processing Main Microprocessor Fan Control AV Switching

Video Input 1 (DVI)

Video Input 2 (HD15)

L-Board

Audio Amplifier

Control

AC Input

Panel Pixel Control

Power Sw. IR Sensor LEDS

H2-BoardSwitches

H1-Board

YDTBoard

& Drive ICs

YDTBoard

& Drive ICs Zsus

ScanBoard

XR address Board

Composite InputBKM-V10

Component InputBKM-V11

Optional Video Input Boards

Single Address Scan

Fan 1

Fan 2

Fan 3

Temp. Sensor 1

Temp. Sensor 2

Temp. Sensor 3

Control

Control

Data

Data

Data

Control

PFM42V1YsusScanBoard

TR-Board

TL-Board

Control-Board & XL address Board

XL address Brd Section

Plasma Panel

ACD

RELAY

VS ONKey Control LinesACD – Detects the presence of AC input. No Red STBY LED if missing.Relay – Turns ON AC input relay. No Relay click if missing.VS ON – Turns ON the VS power supply. No VS voltage if missing.

1

2STBY 5V3

CN801

5

Overall Component Block Diagram

PDP-04 7

PFM42V1 Troubleshooting

Zsus

YDT

YDB

L-Brd

Ysus

XR -Board

FAN #3

Fan #1

Fan #2

Top of TVRear View

Temp

Temp

A-Board

G-Board

Temp

H2-Brd

H1-B

rd

PFM-42V1

Control-Board & XL-Board

PCB Location Diagram

PDP-04 8

PFM42V1 Troubleshooting

Board Reference

PFM42V1

Amber LED ON Red LED ONNo Green LED

No Red LEDNo Green LED

Stationary V or H Line Failure

No Video (Green LED) (No Primer)

No Video (Green LED) (Primer OK) No Audio Part #

A � � � � 1-761-811-11

G � � � � 1-761-810-11

Control Brd � 1-761-875-11

Ysus Brd � 1-761871-11

AC Input � Check Condition

Plasma Panel *� 1-805-424-11

L � 1-761-812-11

*NOTE: Check the Panel Distortion diagrams on the following pages for further failure symptoms and component

replacement recommendations.

��Primary Defective Part� Secondary Defective Part

Triage Chart

PDP-04 9

PFM42V1 Troubleshooting

-Vy Adj.VR6

Vsc Adj.VR5

-Vy TP R8Vsc TP R60

VS Adj.RV203

VA Adj.RV204

VA TP CN806 pins 1 & 2

VS TP CN806 pins 8,9,10

CN806

NOTE: Measure -Vy & Vsc across resistors

GRND Side

VS & VA GRND

Ysus Board G Board

GRND Side

PFM-42V1 VS, VA, -Vy, Vsc Adjustments

PDP-04 10

PFM42V1 Troubleshooting

Ohms

~3MΩ

COM VΩ

Ohms

~3MΩ

COM VΩ

CAUTION: Remove power from unit before making the resistance measurementNOTE: The resistance measurement between the com and VS voltage pads should read approximately 3M ohms with voltmeter leads oriented as shown in the diagram. If the voltmeter leads are reverse the reading will be infinite.A typical faulty reading is 500 ohms. Replace the YDT or YDB if a low resistance is measured.

YDT

YDB

VOM

VOM

PFM-42V1 YDT & YDB Resistance Check

PDP-04 11

PFM42V1 Troubleshooting

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XR address Board

ZsusScanBoard

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XR address Board

ZsusScanBoard

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XR address Board

ZsusScanBoard

YsusScanBoard

YsusScanBoard

YsusScanBoard

Control Board & XL address Board

Control Board & XL address Board

Control Board & XL address Board

No Video (Horizontal Black Bar) lower 1/2 of screen

1st – Confirm secure connections between Ysus and YDB boards . Check Flex Cable between YDB and Panel Assembly for physical damge .

Replace YDB board (connections & Flex Cable OK)Replace Panel Assembly (Flex Cable NG)

No Video (Horizontal Black Bar) upper 1/2 of screen

1st – Confirm secure connections between Ysus and YDT boards . Check Flex Cable between YDT and Panel Assembly for physical damge .

Replace YDT board (connections & Flex Cable OK)Replace Panel Assembly (Flex Cable NG)

No Video (Vertical Black Bar ) 1/2 of screen

1st – Confirm secure connections between Control /XL Board and the Panel Assembly .

Replace Control /XL Board (connections & Flex Cable OK)Replace Panel Assembly (Flex Cable NG)

Panel Distortion Diagrams

PDP-04 12

PFM42V1 Troubleshooting

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XR address Board

ZsusScanBoard

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XR address Board

ZsusScanBoard

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XR address Board

ZsusScanBoard

YsusScanBoard

YsusScanBoard

YsusScanBoard

Control Board & XL address Board

Control Board & XL address Board

Control Board & XL address Board

No Video (Vertical Black Bar ) 1/2 of screen

Single Vertical Black Line (right side of screen )

1st – Confirm secure connections between XR and Control/XL Board.

1st – Confirm secure connections between XR and Control /XL Boards .

2nd – Confirm 5V and VA voltages to XR board .

3rd – Replace boards in the following order .

A) Replace XR-BoardB) Replace Control Board

Single Vertical Black Line (left side of screen )

2nd – Check the drive ICs on the flex cables between the XR and Panel for physical damage .

Replace Panel Assembly for defective flex cable ICs

3rd – Replace XR board

1st – Confirm secure connections between Control /XL Board and the Panel Assembly.

2nd – Check the drive ICs on the flex cables between the Control/XL board and Panel for physical damage .

Replace Panel Assembly for defective flex cable ICs

3rd – Replace Control/XL board (Flex ICs OK)

PDP-04 13

PFM42V1 Troubleshooting

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XR address Board

ZsusScanBoard

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XR address Board

ZsusScanBoard

YsusScanBoard

YsusScanBoard

Control Board & XL address Board

Control Board & XL address Board

Single Horizontal Black Line (upper half of screen )

1st – Confirm secure connections between YDT and Panel Assembly .

Replace Panel Assembly if flex cable is damaged

2nd – Check the drive ICs on the YDT board for physical damge .

Replace YDT board if Ics are damaged .

Single Horizontal Black Line (lower half of screen )

1st – Confirm secure connections between YDB and Panel Assembly

2nd – Check the drive ICs on the YDB board for physical damage .

Replace YDB board if ICs are damaged .

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

Control Board & XL address Board

XR address Board

ZsusScanBoard

YsusScanBoard

Note: One drive IC fails on the YDT or YDB board fails causing the successive drive ICs to not function. This symptom (a Black Bar less-than ½ the screen) can be located in the top or bottom half of the screen depending on if the failed IC is on the YDT or YDB board .

Less-Than ½ Screen Horizontal Black Bar

1st – Replace the YDT or YDB board depending on where the horizontal black bar is located on the screen.

PDP-04 14

PFM42V1 Troubleshooting

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XR address Board

ZsusScanBoard

YsusScanBoard

Control Board & XL address Board

No Video – Black Raster

1st – Check Flex cable connections between Ysus & YDT/YDB boards .Check VS and 5V power supplies to Ysus board . Check for screen Priming

Replace G-board (Volatge(s) NG)Replace Ysus (Priming NG)Replace Control /XL Board (Priming OK)

2nd – Check connections between Ysus and Control boards are secure .Connections & Voltages OKA) Replace YsusB) Replace Control board

3rd – Check all voltages and connections to Zsus board .

Replace Zsus (connections & voltages OK)

ZsusScanBoard

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XR address Board

YsusScanBoard

Control Board & XL address Board

Pixelization & Black Areas In Video

1st – Confirm connections and power supply voltages (VS & 5V) to Zsus board are secure .Confirm Flex cable connections between Zsus board and Panel .

2nd –A) Replace Zsus board (all connections and voltages OK ) B) Replace G-board (voltages NG)C) Replace Plasma Panel (Flex cable NG)

PDP-04 15

PFM42X1 Triage & Troubleshooting

Display Panel Assembly

Power to all Panel Assb. PCBs

Power Audio

Video

A-BoardG-Board

Control-Board

Video Processing Audio Processing Main Microprocessor Fan Control AV Switching

Video Input 2 (HD15)

L-Board

Audio Amplifier

Control

AC Input

Panel Pixel Control

Power Sw. IR Sensor LEDS

H2-BoardSwitches

H1-Board

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs Zsus

ScanBoard

XLB address Board XRB address Board

Composite InputBKM-V10

Optional Video Input Board

Dual Address Scan

XLT address Board XRT address Board

LRLR

Fan 1

Fan 2

Fan 3

Temp. Sensor 1

Temp. Sensor 2

Temp. Sensor 3

Control

Control

Data

Data

Data

Fan 4

Control

Control

PFM42X1

YsusScanBoard

PlasmaPanel

Power Supplies

Video Input 1 (DVI)

Key Control LinesACD – Detects the presence of AC input. No Red STBY LED if missing.Relay – Turns ON AC input relay. No Relay click if missing.VS ON – Turns ON the VS power supply. No VS voltage if missing.

ACD

RELAY

VS ON

1

2STBY 5V

3

CN801

5

Overall Component Block Diagram

PDP-04 16

PFM42X1 Troubleshooting

Zsus

YDT

YDB

L-Brd

Ysus

XRB -Board

Top of TVRear View

Temp

Temp

A-Board

XLB-Board

G-Board

XLT-Board

XRT-Board

Temp

Control-Board

Fan #4

Fan #2 Fan #3

Fan #1

H2-Brd

H1-B

rd

PFM-42X1

PCB Location Diagram

PDP-04 17

PFM42X1 Troubleshooting

Board Reference

PFM42X1

Amber LED ON Red LED ONNo Green LED

No Red LEDNo Green LED

Stationary V or H Line Failure

No Video (Green LED) (No Primer)

No Video (Green LED) (Primer OK) No Audio Part #

A � � � � 1-761-970-11

G � � � � 1-761-969-11

Control Brd � 1-761-992-11

Ysus Brd � 1-761-977-11

AC Input � Check Condition

Plasma Panel *� 1-805-659-11

L � 1-761-971-11

*NOTE: Check the Panel Distortion diagrams on the following pages for further failure symptoms and component

replacement recommendations.

��Primary Defective Part� Secondary Defective Part

Triage Chart

PDP-04 18

PFM42X1 Troubleshooting

PFM-42X1 VS, VA, -Vy, Vsc Adjustments

PDP-04 19

PFM42X1 Troubleshooting

Ohms

~2MΩ

COM VΩ

Ohms

~2MΩ

COM VΩ

CAUTION: Remove power from unit before making the resistance measurementNOTE: The resistance measurement between the com and VS voltage pads should read approximately ~2MΩohms with voltmeter leads oriented as shown in the diagram. If the voltmeter leads are reverse the reading will be ~1MΩ.A typical faulty reading is 500 ohms. Replace the YDT or YDB if a low resistance is measured.

YDT

YDB

VOM

VOM

+ -

- +

+

-

-

+

1.3MΩ

2.3MΩ

1.3MΩ

2.3MΩ

PFM-42X1 YDT & YDB Resistance Check

PDP-04 20

PFM42X1 Troubleshooting

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XLB address Board XRB address Board

ZsusScanBoard

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XLB address Board XRB address Board

ZsusScanBoard

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XLB address Board XRB address Board

ZsusScanBoard

XLT address Board XRT address Board

XLT address Board XRT address Board

XLT address Board XRT address Board

YsusScanBoard

YsusScanBoard

YsusScanBoard

No Video (Horizontal Black Bar) lower 1/2 of screen

1st – Confirm secure connections between Ysus and YDB boards . Check Flex Cable between YDB and Panel Assembly for physical damge .

Replace YDB board (connections & Flex Cable OK)Replace Panel Assembly (Flex Cable NG)

No Video (Horizontal Black Bar) upper 1/2 of screen

1st – Confirm secure connections between Ysus and YDT boards . Check Flex Cable between YDT and Panel Assembly for physical damge .

Replace YDT board (connections & Flex Cable OK)Replace Panel Assembly (Flex Cable NG)

No Video (Vertical Black Box) 1/4 of screen

1st – Confirm secure connections between XLB Board and the Panel Assembly .

Replace XLB Board (connections & Flex Cable OK)Replace Panel Assembly (Flex Cable NG)

NOTE: This same type of symptom can occur due to a defective XRB board. The black box will occur in the lower right quadrant above the XRB board .

Panel Distortion Diagrams

PDP-04 21

PFM42X1 Troubleshooting

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XLB address Board XRB address Board

ZsusScanBoard

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XLB address Board XRB address Board

ZsusScanBoard

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XLB address Board XRB address Board

ZsusScanBoard

XLT address Board XRT address Board

XLT address Board XRT address Board

XLT address Board XRT address Board

YsusScanBoard

YsusScanBoard

YsusScanBoard

No Video (Vertical Black Box) 1/4 of screen

1st – Confirm secure connections between XLT Board and the Panel Assembly .

Replace XLT Board (connections & Flex Cable OK)Replace Panel Assembly (Flex Cable NG)

NOTE: This same type of symptom can occur due to a defective XRT board . The black box will occur in the upper right quadrant below the XRT board .

Single Vertical Black Line (right side of screen )

1st – Confirm secure connections between XLT and Panel Assembly .

Single Vertical Black Line (left side of screen )

2nd – Check the drive ICs on the flex cables between the XR and Panel for physical damage .

Replace Panel Assembly for defective Flex cable Ics and/or damaged Flex cable .

3rd – Replace XLT board (connections and ICs OK)

1st – Confirm secure connections between XLB Board and the Panel Assembly .

2nd – Check the drive ICs on the flex cables between the XLB board and Panel for physical damage .

Replace Panel Assembly for defective flex cable ICs

3rd – Replace XLB board (Flex cable and ICs OK)

NOTE: This same type of symptom can occur due to a defective XRT board . The single black line will occur in the lower right quadrant below the XRT board .

NOTE: This same type of symptom can occur due to a defective XRB board. The single black line will occur in the lower right quadrant above the XRB board .

PDP-04 22

PFM42X1 Troubleshooting

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XLB address Board XRB address Board

ZsusScanBoard

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XLB address Board XRB address Board

ZsusScanBoard

XLT address Board XRT address Board

XLT address Board XRT address Board

YsusScanBoard

YsusScanBoard

Single Horizontal Black Line (upper half of screen )

1st – Confirm secure connections between YDT and Panel Assembly .

Replace Panel Assembly if flex cable is damaged

2nd – Check the drive ICs on the YDT board for physical damge .

Replace YDT board if Ics are damaged .

Single Horizontal Black Line (lower half of screen )

1st – Confirm secure connections between YDB and Panel Assembly

2nd – Check the drive ICs on the YDB board for physical damage .

Replace YDB board if ICs are damaged .

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XLB address Board XRB address Board

ZsusScanBoard

YsusScanBoard

XLT address Board XRT address Board

Note: One drive IC fails on the YDT or YDB board fails causing the successive drive ICs to not function. This symptom (a Black Bar less-than ½ the screen ) can be located in the top or bottom half of the screen depending on if the failed IC is on the YDT or YDB board .

Less-Than ½ Screen Horizontal Black Bar

1st – Replace the YDT or YDB board depending on where the horizontal black bar is located on the screen .

PDP-04 23

PFM42X1 Troubleshooting

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XLB address Board XRB address Board

ZsusScanBoard

XLT address Board XRT address Board

YsusScanBoard

No Video – Black Raster

1st – Check Flex cable connections between Ysus & YDT/YDB boards .Check VS and 5V power supplies to Ysus board . Check for screen Priming

Replace G-board (Volatge(s) NG)Replace Ysus (Priming NG)Replace Control /XL Board (Priming OK)

2nd – Check connections between Ysus and Control boards are secure .Connections & Voltages OKA) Replace YsusB) Replace Control board

3rd – Check all voltages and connections to Zsus board .

Replace Zsus (connections & voltages OK)

Control Board

ZsusScanBoard

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XLB address Board XRB address Board

XLT address Board XRT address Board

YsusScanBoard

Pixelization & Black Areas In Video

1st – Confirm connections and power supply voltages (VS & 5V) to Zsus board are secure .Confirm Flex cable connections between Zsus board and Panel .

2nd –A) Replace Zsus board (all connections and voltages OK) B) Replace G-board (voltages NG)C) Replace Plasma Panel (Flex cable NG)

PDP-04 24

FWD42PV1 Triage & Troubleshooting

Display Panel Assembly

Power to all Panel Assb. PCBsPower Audio

Video

A-BoardG-Board

Control-Board

Power Supplies

Video Processing Audio Processing Main Microprocessor Fan Control AV Switching

Video Input 1 (DVI)

Video Input 2 (HD15)

L-Board

Audio Amplifier

Control

AC Input

Panel Pixel Control

Power Sw. IR Sensor LEDS

H2-BoardSwitchesH1-Board

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs Zsus

ScanBoard

XLB address Board XRB address Board

Composite InputBKM-V10

Optional Video Input Board

Single Address Scan

Fan 1

Fan 2

Fan 3

Temp. Sensor 1

Temp. Sensor 2

Temp. Sensor 3

Control

Control

Data

Data

Data

Fan 4

Control

Control

Fan 5Control

FWD42PV1

YsusScanBoard

LRLR

PlasmaPanel

Key Control LinesACD – Detects the presence of AC input. No Red STBY LED if missing.Relay – Turns ON AC input relay. No Relay click if missing.VS ON – Turns ON the VS power supply. No VS voltage if missing.

ACD

RELAY

VS ON

1

2STBY 5V

3

CN801

7

Overall Component Block Diagram

PDP-04 25

FWD42PV1 Troubleshooting

Zsus-Board

YDT

YDB

L-Brd

Ysus-Board

XR -Board

Fan #1

Fan #4

Top of TVRear View

Temp

Temp

XL-Board

G-Board

Temp

Control-Board

Fan #3Fan #2

Fan #5

A-Board

H2-Brd

FWD-42V1

PCB Location Diagram

PDP-04 26

FWD42PV1 Troubleshooting

Board Reference

FWD42PV1

2Blinks

3Blinks

4Blinks

5Blinks

AlternateRed & Green

LED FlashAmber LED ON Stationary V or

H Line FailureRed LED ON

No Green LED No Red LED

No Green LED No Video (Green LED) (No Primer)

No Video (Green LED) (Primer

OK)No Audio Part #

A � � �* � � � � � � 1-789-201-11

G � � � � � � 1-789-203-11

Control Brd � � 1-789-209-11

Ysus Brd � 1-789-205-11

AC Input � Check Condition

Fan #1 � 1-787-338-11

Fan #2 � 1-787-338-11

Fan #3 � 1-787-338-11

Fan #4 � 1-787-338-11

Fan #5 � 1-787-338-11

Plasma Panel *� 1-805-839-11

Temp #1 � 1-789-203-11

Temp #2 � 1-789-203-11

Temp #3 � 1-789-203-11

L � � 1-789-200-11

Poor Ventilation � Check Condition

Problem Panel Fan Temp Voltage * Immediate Shutdown *NOTE: Check the Panel Distortion diagrams on the following pages for further failure symptoms and component replacement recommendations.

��Primary Defective Part� Secondary Defective Part

� (Last Resort) Improbable Defective Part

Triage Chart

PDP-04 27

FWD42PV1 Troubleshooting

FWD-42PV1 VS, VA, -Vy, Vsc Adjustments

-Vy Adj.Vsc Adj.

VS Adj.VR600

VA Adj.VR700

CN807

Ysus Board

G Board

-Vy TP R8

Vsc TP R60

GRND Side

GRND Side

VS TP CN807 pins 1, 2

VS & VA GRND

VA TP CN806 pin 6

PDP-04 28

FWD42PV1 Troubleshooting

FWD-42PV1 YDT & YDB Resistance Check

Ohms

~3MΩ

COM VΩ

Ohms

~3MΩ

COM VΩ

YDT

YDB

VOM

VOM

CAUTION: Remove power from unit before making the resistance measurementNOTE: The resistance measurement between the com and VS voltage pads should read approximately 3M ohms with voltmeter leads oriented as shown in the diagram. If the voltmeter leads are reverse the reading will be infinite.A typical faulty reading is 500 ohms. Replace the YDT or YDB if a low resistance is measured.

PDP-04 29

FWD42PV1 Troubleshooting

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XL address Board XR address Board

ZsusScanBoard

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XL address Board XR address Board

ZsusScanBoard

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XL address Board XR address Board

ZsusScanBoard

YsusScanBoard

YsusScanBoard

YsusScanBoard

No Video (Horizontal Black Bar) lower 1/2 of screen

1st – Confirm secure connections between Ysus and YDB boards . Check Flex Cable between YDB and Panel Assembly for physical damge .

Replace YDB board (connections & Flex Cable OK)Replace Panel Assembly (Flex Cable NG)

No Video (Horizontal Black Bar) upper 1/2 of screen

1st – Confirm secure connections between Ysus and YDT boards . Check Flex Cable between YDT and Panel Assembly for physical damge .

Replace YDT board (connections & Flex Cable OK)Replace Panel Assembly (Flex Cable NG)

No Video (Vertical Black Bar ) 1/2 of screen

1st – Confirm secure connections between XL Board and the Panel Assembly .

Replace XL Board (connections & Flex Cable OK)Replace Panel Assembly (Flex Cable NG)

Panel Distortion Diagrams

PDP-04 30

FWD42PV1 Troubleshooting

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XL address Board XR address Board

ZsusScanBoard

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XL address Board XR address Board

ZsusScanBoard

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XL address Board XR address Board

ZsusScanBoard

YsusScanBoard

YsusScanBoard

YsusScanBoard

No Video (Vertical Black Bar ) 1/2 of screen

Single Vertical Black Line (right side of screen )

1st – Confirm secure connections between XR, XL, and Control Boards .

1st – Confirm secure connections between XR, XL, and Control Boards .

2nd – Confirm 5V and VA voltages to XR board .

3rd – Replace boards in the following order .

A) Replace XR-BoardB) Replace Control Board

Single Vertical Black Line (left side of screen )

2nd – Check the drive ICs on the flex cables between the XR and Panel for physical damage .

Replace Panel Assembly for defective flex cable ICs

3rd – Replace XR board

1st – Confirm secure connections between XL Board and the Panel Assembly .

2nd – Check the drive ICs on the flex cables between the XL board and Panel for physical damage .

Replace Panel Assembly for defective flex cable ICs

3rd – Replace XL board (Flex ICs OK)

PDP-04 31

FWD42PV1 Troubleshooting

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XL address Board XR address Board

ZsusScanBoard

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XL address Board XR address Board

ZsusScanBoard

YsusScanBoard

YsusScanBoard

Single Horizontal Black Line (upper half of screen )

1st – Confirm secure connections between YDT and Panel Assembly .

Replace Panel Assembly if flex cable is damaged

2nd – Check the drive ICs on the YDT board for physical damge .

Replace YDT board if Ics are damaged .

Single Horizontal Black Line (lower half of screen )

1st – Confirm secure connections between YDB and Panel Assembly

Replace Panel Assembly if flex cable is damaged

2nd – Check the drive ICs on the YDB board for physical damage .

Replace YDB board if ICs are damaged .

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XL address Board XR address Board

ZsusScanBoard

YsusScanBoard

Note: One drive IC fails on the YDT or YDB board fails causing the successive drive ICs to not function. This symptom (a Black Bar less-than ½ the screen ) can be located in the top or bottom half of the screen depending on if the failed IC is on the YDT or YDB board .

Less-Than ½ Screen Horizontal Black Bar

1st – Replace the YDT or YDB board depending on where the horizontal black bar is located on the screen .

PDP-04 32

FWD42PV1 Troubleshooting

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XL address Board XR address Board

ZsusScanBoard

YsusScanBoard

No Video – Black Raster

1st – Check Flex cable connections between Ysus & YDT/YDB boards .Check VS and 5V power supplies to Ysus board. Check for screen Priming

Replace G-board (Volatge (s) NG)Replace Ysus (Priming NG)Replace Control Board (Priming OK)

2nd – Check connections between Ysus and Control boards are secure .Connections & Voltages OKA) Replace YsusB) Replace Control board

3rd – Check all voltages and connections to Zsus board .

Replace Zsus (connections & voltages OK)

Control Board

ZsusScanBoar

d

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XL address Board XR address Board

YsusScanBoard

Pixelization & Black Areas In Video

1st – Confirm connections and power supply voltages (VS & 5V) to Zsus board are secure .Confirm Flex cable connections between Zsus board and Panel .

2nd –A) Replace Zsus board (all connections and voltages OK) B) Replace G-board (voltages NG)C) Replace Plasma Panel (Flex cable NG)

PDP-04 33

FWD50PX1 Triage & Troubleshooting

Display Panel Assembly

Power to all Panel Assb. PCBs

Power

Audio

Video

B-BoardG-Board

Control-Board

Power Supplies

Video Processing Main Microprocessor

Video Input 1 (DVI)

Video Input 2 (HD15)

SP-Board

Audio Amplifier

Control

AC Input

Panel Pixel Control

Fan 1

Fan 2

Fan 3

Temp. Sensor 1

Temp. Sensor 2

Temp. Sensor 3

Control

Control

Data

Data

Data

IR Sensor LEDS

Power Switch Switches H1-Board

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs Xsus

ScanBoard

Address Board

Composite InputBKM-V10

Component InputBKM-V11

Optional Video Input Boards

Dual Address Scan

Fan 4

Control

Control

Q-Board

Audio Processing Fan Control AV Switching

ControlVideoPower

H2-Board

FWD50PX1

Address Board Address BoardAddress Board

Address Board Address Board Address BoardAddress Board

YsusScanBoard

LRLR

PlasmaPanel

Key Control LinesACD – Detects the presence of AC input. No Red STBY LED if missing.Relay – Turns ON AC input relay. No Relay click if missing.VS ON – Turns ON the VS power supply. No VS voltage if missing.

ACD

RELAY

VS ON

1

2STBY 5V3

CN801

7

Overall Component Block Diagram

PDP-04 34

FWD50PX1 Troubleshooting

X Drive

YDT

YDB

Address Board

Top of TVRear View

S-Brd

S-Brd

Address Board

Fan #1

Fan #4Fan #3

H2-Brd

H1-Brd

FWD-50PX1

Interface-BoardY Drive

U1-Brd

Q-Board Power Unit Board

Address BoardAddress Board

Address BoardAddress Board Address BoardAddress Board

SP-Board

Digital Video Board

S-Brd

B-Board

Fan #2

PCB Location Diagram

PDP-04 35

FWD50PX1 Troubleshooting

Board Reference

FWD50PX1

2Blinks

3Blinks

4Blinks

5Blinks

6Blinks

AlternateRed & Green

LED FlashAmber LED ON Red LED ON

No Green LED Stationary V or H

Line Failure No Red LED

No Green LED

No Video(Green LED) (No

Primer)

No Video(Green LED) (Primer OK)

No Audio Part #

B � � � � � � � � � � A-1070-525-A

Q � � � A-1062-627-A

G � � � � � 1-468-872-11

Interface Brd � � 9-885-061-46

Digital Video Brd � � 9-885-061-45

Ysus Brd � 9-885-061-44

AC Input � Check Condition

Fan #1 � 1-787-088-11

Fan #2 � 1-787-088-11

Fan #3 � 1-787-243-11

Fan #4 � 1-787-243-11

Plasma Panel *� � 1-805-676-11

Temp. #1 *� A-1068-935-A

Temp. #2 *� A-1068-935-A

Temp. #3 *� A-1068-935-A

L � A-1068-935-A

Poor Ventilation � Check Condition

Problem Panel Temp Fan 3.3V5V 6V *Immediate Shutdown

*NOTE: Check the Panel Distortion diagrams on the following pages for further failure symptoms and component replacement recommendations.

��Primary Defective Part� Secondary Defective Part

� (Last Resort) Improbable Defective Part

Triage Chart

PDP-04 36

FWD50PX1 Troubleshooting

FWD-50PX1 Vsus & VADR Check

PDP-04 37

FWD50PX1 Troubleshooting

FWD-50PX1 YDT & YDB Resistance Check

PDP-04 38

FWD50PX1 Troubleshooting

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XsusScanBoard

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XsusScanBoard

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XsusScanBoard

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

YsusScanBoard

YsusScanBoard

YsusScanBoard

No Video (Horizontal Black Bar) lower 1/2 of screen

1st – Confirm secure connections between Ysus and YDB boards . Check Flex Cable between YDB and Panel Assembly for physical damge .

Replace YDB board (connections & Flex Cable OK)Replace Panel Assembly (Flex Cable NG)

No Video (Horizontal Black Bar) upper 1/2 of screen

1st – Confirm secure connections between Ysus and YDT boards . Check Flex Cable between YDT and Panel Assembly for physical damge .

Replace YDT board (connections & Flex Cable OK)Replace Panel Assembly (Flex Cable NG)

No Video (Vertical Black Box) 1/8 of screen

1st – Confirm secure connections between associated address board and the Panel Assembly . Check driver ICs for physical damage .

Replace Address Board (connections & Flex Cable OK)Replace Panel Assembly (Flex Cable or Driver ICs NG)

NOTE: This same type of symptom can occur due to any defective address boards . The black box will occur in the lower or upper part of the screen below or above a particular address board .

Panel Distortion Diagrams

PDP-04 39

FWD50PX1 Troubleshooting

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XsusScanBoard

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XsusScanBoard

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XsusScanBoard

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

YsusScanBoard

YsusScanBoard

YsusScanBoard

No Video (Vertical Black Box) 1/8 of screen

1st – Confirm secure connections between associated address board and the Panel Assembly . Check driver ICs for physical damage .

Replace Address Board (connections & Flex Cable OK)Replace Panel Assembly (Flex Cable or Driver ICs NG)

NOTE: This same type of symptom can occur due to any defective address boards . The black box will occur in the lower or upper part of the screen below or above a particular address board .

Single Vertical Black Line

1st – Confirm secure connections between Address board and Panel Assembly.

Single Vertical Black Line

2nd – Check the drive ICs on the flex cables between the Address and Panel for physical damage .

Replace Panel Assembly for defective Flex cable ICs and/or damaged Flex cable .

3rd – Replace Address board (connections and ICs OK)

1st – Confirm secure connections between Address Board and the Panel Assembly .

2nd – Check the drive ICs on the flex cables between the Address board and Panel for physical damage .

Replace Panel Assembly for defective flex cable ICs

3rd – Replace Address board (Flex cable and ICs OK)

NOTE: This same type of symptom can occur due to any defective address boards . The black box will occur in the lower or upper part of the screen below or above a particular address board .

NOTE: This same type of symptom can occur due to any defective address boards . The black box will occur in the lower or upper part of the screen below or above a particular address board .

PDP-04 40

FWD50PX1 Troubleshooting

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XsusScanBoard

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XsusScanBoard

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

YsusScanBoard

YsusScanBoard

Single Horizontal Black Line (upper half of screen )

1st – Confirm secure connections between YDT and Panel Assembly .

Replace Panel Assembly if flex cable is damaged

2nd – Check the drive ICs on the YDT board for physical damge .

Replace YDT board if Ics are damaged .

Single Horizontal Black Line (lower half of screen )

1st – Confirm secure connections between YDB and Panel Assembly

2nd – Check the drive ICs on the YDB board for physical damage .

Replace YDB board if ICs are damaged .

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

ZsusScanBoard

YsusScanBoard

Address Board

Address Board

Address Board

Address Board

Note: One drive IC fails on the YDT or YDB board fails causing the successive drive ICs to not function. This symptom (a Black Bar less-than ½ the screen ) can be located in the top or bottom half of the screen depending on if the failed IC is on the YDT or YDB board .

Less -Than ½ Screen Horizontal Black Bar

1st – Replace the YDT or YDB board depending on where the horizontal black bar is located on the screen.

Address Board

Address Board

Address Board

Address Board

PDP-04 41

FWD50PX1 Troubleshooting

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XsusScanBoard

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

YsusScanBoard

No Video – Black Raster

1st – Check Flex cable connections between Ysus & YDT/YDB boards .Check VS and 5V power supplies to Ysus board . Check for screen Priming

Replace G-board (Volatge(s) NG)Replace Ysus (Priming NG)Replace Control /XL Board (Priming OK)

2nd – Check connections between Ysus and Control boards are secure .Connections & Voltages OKA) Replace YsusB) Replace Control board

3rd – Check all voltages and connections to Xsus board .

Replace Xsus (connections & voltages OK)

Control Board

XsusScanBoard

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

Address Board

YsusScanBoard

Pixelization & Black Areas In Video

1st – Confirm connections and power supply voltages (VS & 5V) to Zsus board are secure .Confirm Flex cable connections between Zsus board and Panel .

2nd –A) Replace Zsus board (all connections and voltages OK ) B) Replace G-board (voltages NG)C) Replace Plasma Panel (Flex cable NG)

PDP-04 42

FWD50PX2 Triage & Troubleshooting

Display Panel Assembly

Power to all Panel Assb. PCBs

Power Audio

Video

A-BoardG-Board

Control-Board

Power Supplies

Video Processing Audio Processing Main Microprocessor Fan Control AV Switching

Video Input 1 (DVI)

Video Input 2 (HD15)

L-Board

Audio Amplifier

Control

AC Input

Panel Pixel Control

Power Sw. IR Sensor LEDS

H2-Board

SwitchesH1-Board

YsusScan(YDT)Board

& Drive ICs

YsusScan(YDT)Board

& Drive ICs Zsus

ScanBoard

XL address Brd XR address Brd

Composite InputBKM-V10

Component InputBKM-V11

Optional Video Input Boards

Single Address Scan

Fan 1

Fan 2

Fan 3

Temp. Sensor 1

Temp. Sensor 2

Temp. Sensor 3

Control

Control

Data

Data

Data

Control

Fan 4

Fan 5

Fan 6

Control

Control

Control

XC address Brd

FWD50PX2

YsusScanBoard

LRLR

PlasmaPanel

Key Control LinesACD – Detects the presence of AC input. No Red STBY LED if missing.Relay – Turns ON AC input relay. No Relay click if missing.VS ON – Turns ON the VS power supply. No VS voltage if missing.

ACD

RELAY

VS ON

1

2STBY 5V

3

CN801

7

Overall Component Block Diagram

PDP-04 43

FWD50PX2 Troubleshooting

YDT

YDBL-Brd

Ysus-Board

XR -Board

Fan #1

Fan #4

Top of TVRear View

TempTemp

XL-Board

G-Board

Temp

Control-Board

Fan #3Fan #2

H2-Brd

H1-Brd

XC -Board

Zsus-Board

FWD-50PX2

Fan #6

A-Board

I-Brd

Fan #5

PCB Location Diagram

PDP-04 44

FWD50PX2 Troubleshooting

Board Reference

FWD50PX2

2Blinks

3Blinks

4Blinks

5Blinks

AlternateRed & Green

LED FlashAmber LED ON Red LED ON

No Green LED No Red LED

No Green LED Stationary V or H Line Failure

No Video (Green LED) (No Primer)

No Video (Green LED) (Primer

OK)No Audio Part #

A � � �* � � � � � � 1-789-374-11

G � � � � � � 1-789-375-11

Control Brd � � 1-789-380-11

Ysus Brd � 1-789-386-11

AC Input � Check Condition

Fan #1 � 1-787-434-11

Fan #2 � 1-787-434-11

Fan #3 � 1-787-434-11

Fan #4 � 1-787-437-11

Fan #5 � 1-787-434-11

Fan #6 � 1-787-437-11

Plasma Panel *� 1-802-006-11

Temp #1 � 1-789-203-11

Temp #2 � 1-789-203-11

Temp #3 � 1-789-203-11

L � � 1-789-376-11

Poor Ventilation � Check Condition

Problem Panel Fan Temp Voltage * Immediate Shutdown *NOTE: Check the Panel Distortion diagrams on the following pages for further failure symptoms and component replacement recommendations.

��Primary Defective Part� Secondary Defective Part

� (Last Resort) Improbable Defective Part

Triage Chart

PDP-04 45

FWD50PX2 Troubleshooting

-Vy Adj.

Vsc Adj.

-Vy TP

Vsc TP

Two Vertically mounted boards on the Ysus Board

VS Adj.VR600

VA Adj.VR700

VS TP CN806 pins 1, 2, 3

VA TP CN806 pins 9 & 10

CN806

-Vy GRND

Vsc GRND

VS & VA GRND

Ysus Board G BoardFWD-50PX2 VS, VA, -Vy, Vsc Adjustments

PDP-04 46

FWD50PX2 Troubleshooting

Ohms

~3MΩ

COM VΩ

Ohms

~3MΩ

COM VΩ

CAUTION: Remove power from unit before making the resistance measurementNOTE: The resistance measurement between the com and VS voltage pads should read approximately 3M ohms with voltmeter leads oriented as shown in the diagram. If the voltmeter leads are reverse the reading will be infinite.A typical faulty reading is 500 ohms. Replace the YDT or YDB if a low resistance is measured.

YDT

YDB

VOM

VOM

FWD-50PX2 YDT & YDB Resistance Check

PDP-04 47

FWD50PX2 Troubleshooting

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

ZsusScanBoard

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

ZsusScanBoard

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

ZsusScanBoard

XL address Brd XR address BrdXC address Brd

XL address Brd XR address BrdXC address Brd

XL address Brd XR address BrdXC address Brd

YsusScanBoard

YsusScanBoard

YsusScanBoard

No Video (Horizontal Black Bar) lower ½ of screen

1st – Confirm secure connections between YDT and YDB boards . Check Flex Cable between YDB and Panel Assembly for physical damge .

Replace YDB board (connections & Flex Cable OK)Replace Panel Assembly (Flex Cable NG)

No Video (Horizontal Black Bar) upper ½ of screen

1st – Confirm secure connections between Ysus and YDT boards . Check Flex Cable between YDT and Panel Assembly for physical damge .

Replace YDT board (connections & Flex Cable OK)Replace Panel Assembly (Flex Cable NG)

No Video (Vertical Black Bar ) 1/3 of screen

1st – Confirm secure connections between XL and Control Boards .

2nd – Confirm 5V and VA voltages to XL board .

3rd – Replace boards in the following order .

A) Replace XL-BoardB) Replace Control Board

Panel Distortion Diagrams

PDP-04 48

FWD50PX2 Troubleshooting

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XL address Brd XR address BrdXC address Brd

XL address Brd XR address BrdXC address Brd

XL address Brd XR address BrdXC address Brd

YsusScanBoard

YsusScanBoard

YsusScanBoard

Note: This same symptom can occur due to a defective XC board . Follow the same step listed above for the XL -board to troubleshoot a possible defective XC board .

No Video (Vertical Black Bar) 1/3 of screen

Single Vertical Black Line (right side of screen )

1st – Confirm secure connections between XR and Control Board .

1st – Confirm secure connections between XR and Control Boards .

2nd – Confirm 5V and VA voltages to XR board.

3rd – Replace boards in the following order .

A) Replace XR-BoardB) Replace Control Board

Single Vertical Black Line (left side of screen )

2nd – Check the drive ICs on the flex cables between the XR and Panel for physical damage .

Replace Panel Assembly for defective flex cable ICs

3rd – Replace XR board

1st – Confirm secure connections between XL and Control Board .

2nd – Check the drive ICs on the flex cables between the XL and Panel for physical damage .

Replace Panel Assembly for defective flex cable ICs

3rd – Replace XL board

ZsusScanBoard

ZsusScanBoard

ZsusScanBoard

NOTE: This same type of symptom can occur due to a defective XC board . The single black line will occur in the center of the screen above the XC board .

PDP-04 49

FWD50PX2 Troubleshooting

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

ZsusScanBoard

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

ZsusScanBoard

XL address Brd XR address BrdXC address Brd

XL address Brd XR address BrdXC address Brd

YsusScanBoard

YsusScanBoard

Single Horizontal Black Line (upper half of screen )

1st – Confirm secure connections between YDT and Panel Assembly .

Replace Panel Assembly if flex cable is damaged

2nd – Check the drive ICs on the YDT board for physical damge .

Replace YDT board if Ics are damaged .

Single Horizontal Black Line (lower half of screen )

1st – Confirm secure connections between YDB and Panel Assembly

2nd – Check the drive ICs on the YDB board for physical damage .

Replace YDB board if ICs are damaged .

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XL address Board XR address Board

ZsusScanBoard

YsusScanBoard

Note: One drive IC fails on the YDT or YDB board fails causing the successive drive ICs to not function. This symptom (a Black Bar less-than ½ the screen ) can be located in the top or bottom half of the screen depending on if the failed IC is on the YDT or YDB board .

Single Defective Driver Board Buffer IC on YDT or YDB Board

1st – Replace the YDT or YDB board depending on where the horizontal black bar is located on the screen .

YDBBrd

YDTBrd

XL address Board XR address Board

ZsusYsus

PDP-04 50

FWD50PX2 Troubleshooting

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

ZsusScanBoard

XL address Brd XR address BrdXC address Brd

YsusScanBoard

ZsusScanBoard

YDBBoard

& Drive ICs

YDTBoard

& Drive ICs

XL address Brd XR address BrdXC address Brd

YsusScanBoard

No Video – Black Raster

1st – Check flex cable connections between Ysus & YDT/YDB boards .Check VS and 5V power supplies to Ysus board .

Replace G-board (Volatge(s) NG)Replace Ysus (Priming NG)Replace Control Board (Priming OK)

2nd – Check connections between Ysus and Control boards are secure .Connections & Voltages OKA) Replace YsusB) Replace Control board

3rd – Check all voltages and connections to Zsus board .

Replace Zsus (connections & voltages OK)

Pixelization & Black Areas In Video

1st – Confirm connections and power supply voltages (VS & 5V) to Zsus board are secure .Confirm Flex cable connections between Zsus board and Panel .

2nd –A) Replace Zsus board (all connections and voltages OK) B) Replace G-board (voltages NG)C) Replace Plasma Panel (Flex cable NG)

Control Board

and i.Link are trademarks of Sony Electronics

2007 Sony Electronics, Inc.EMCSA - A Service Company

16530 Via EsprilloSan Diego, CA 92127

Reproduction in whole or part without written permission is prohibited. All rights reservedPDP040607 06/08/07