SONY PFM42V1, PFM42X1, FWD42PV1, FWD50PX1, FWD50PX2 Service Manual

TTS Guide

Plasma Panel Monitors

Triage & Troubleshooting Guide

PFM42V1

PFM42X1

Plasma Monitors Models: PFM42V1 PFM42X1 FWD42PV1 FWD50PX1 FWD50PX2

Triage and Troubleshooting

Course: PDP-04

FWD42PV1

FWD50PX1

FWD50PX2

Table of Contents

General PFM & FWD Plasma Monitor Information ............ 2

General Plasma Panel Block Diagram ................................ 2

Service Modes and Adjustments ..................................... 3

Accessing & Navigating Service Modes .............................. 3

PFM42V1, PFM42X1, FWD42PV1, FWD50PX2 ........... 3

FWD50PX1 .................................................................... 4

Place unit in Standby Mode ..................................... 4

Board Replacement & Adjustments ................................. 5

Power Supplies ................................................................ 5

G-Board ............................................................................... 5

Ysus Board .......................................................................... 5

Plasma Panel Voltage Label ................................................ 5

PFM42V1 Triage & Troubleshooting ................................... 6

Overall Component Block Diagram ..................................... 6

PCB Location Diagram ........................................................ 7

Triage Chart ......................................................................... 8

PFM-42V1 VS, VA, -Vy, Vsc Adjustments ............................ 9

PFM-42V1 YDT & YDB Resistance Check ........................ 10

Panel Distortion Diagrams ..................................................11

PFM42X1 Triage & Troubleshooting ................................. 15

Overall Component Block Diagram ................................... 15

PCB Location Diagram ...................................................... 16

Triage Chart ....................................................................... 17

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

FWD42PV1 Triage & Troubleshooting .............................. 24

Overall Component Block Diagram ................................... 24

PCB Location Diagram ...................................................... 25

Triage Chart ....................................................................... 26

FWD-42PV1 VS, VA, -Vy, Vsc Adjustments ....................... 27

FWD-42PV1 YDT & YDB Resistance Check ..................... 28

Panel Distortion Diagrams ................................................. 29

FWD50PX1 Triage & Troubleshooting .............................. 33

Overall Component Block Diagram ................................... 33

PCB Location Diagram ...................................................... 34

Triage Chart ....................................................................... 35

FWD-50PX1 Vsus & VADR Check .................................... 36

FWD-50PX1 YDT & YDB Resistance Check ..................... 37

Panel Distortion Diagrams ................................................. 38

FWD50PX2 Triage & Troubleshooting .............................. 42

Overall Component Block Diagram ................................... 42

PCB Location Diagram ...................................................... 43

Triage Chart ....................................................................... 44

FWD-50PX2 VS, VA, -Vy, Vsc Adjustments ....................... 45

FWD-50PX2 YDT & YDB Resistance Check ..................... 46

Panel Distortion Diagrams ................................................. 47

PFM-42X1 VS, VA, -Vy, Vsc Adjustments .......................... 18

PFM-42X1 YDT & YDB Resistance Check ........................ 19

PDP-04 i

Control Board

X-Board

Ysus-Board

Zsus-Board

(Address Board)

(Scan Board)

RGB/YUV

Input

DVI Input

Audio Input

(Address Board)

X-Board

(Address Board) (Address Board)

COF (Chip On Film)

FPC (Flexible Printed Circuit)

FFC (Flat Flexible Cable)

FFCFFC

Audio Input

Plasma

Panel

Address boards for

Dual Scan Models

No Connection

FWD50PX2

Model

FWD50PX2

Model Only

PFM 4 ICs

FWD 1 IC

A-Board

Points for Disconnection

FWD Only

PFM Only

General PFM & FWD Plasma Monitor Information

PDP-04 2

General Plasma Panel Block Diagram

Service Modes and Adjustments

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

Accessing & Navigating Service Modes

General Information

PFM42V1, PFM42X1, FWD42PV1, FWD50PX2

ENTER → 1 → 8 → 2

Use the Right & Left arrows to scroll through the main service mode categories

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

PDP-04 3

FWD50PX1

- EEPROM Initialize

- Chroma Decider

- AD Converter

- White Balance

- General

- Manual Control

- Preset Edit

- Service Staus

Service Mode

A/ D Converter Adjustment

White 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

Place unit in Standby Mode

Press DISPLAY → 5 → VOL + → POWER Use the Right & Left arrows to scroll through the main service mode

Power Supplies

Plasma Panel Voltage Label

Use the Up/Down arrows to scroll through the sub category items Use 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

G-Board

VA – 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 Board

Vsc – 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

PDP-04 5

PFM42V1 Triage & Troubleshooting

Display Panel Assembly

Power to all Panel

Assb. PCBs

Power

Audio

Video

A-Board

G-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

Input

 Panel Pixel Control

 Power Sw.  IR Sensor  LEDS

H2-Board

Switches

H1-Board

YDT

Board

Drive ICs

YDT

Board

Drive ICs

Zsus Scan

Board

XR address Board

Composite Input

BKM-V10

Component Input

BKM-V11

Optional Video

Input Boards

Single Address

Scan

Fan 1

Fan 2

Fan 3

Temp. Sensor 1

Temp. Sensor 2

Temp. Sensor 3

Control

Data

Control

PFM42V1

Ysus Scan

Board

TR-Board

TL-Board

Control-Board &

XL address Board

XL address Brd

Section

Plasma

Panel

ACD

RELAY

VS ON

Key Control Lines

ACD – 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

STBY 5V

CN801

Overall Component

Block Diagram

PDP-04 6

PFM42V1 Troubleshooting

Zsus

YDT

YDB

L-Brd

Ysus

XR -Board

F A N

Fan #1

Fan #2

Top of TV

Rear View

Temp

A-Board

G-Board

Temp

H2-Brd

H1-Brd

PFM-42V1

Control-Board &

-Board

PDP-04 7

PCB Location Diagram

PFM42V1 Troubleshooting

Board Reference

PFM42V1

Amber 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 #



�



�

1-761-811-11

 

� �

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



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 8

PFM42V1 Troubleshooting

-Vy Adj. VR

Vsc Adj.

-Vy TP R8

Vsc TP R60

VS Adj.

RV203

VA Adj.

RV204

VA TP

CN806 pins 1 &

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 9

Ohms

~3MΩ

COM VΩ

Ohms

~3MΩ

COM VΩ

CAUTION: Remove power from unit before making the resistance measurement

NOTE

: 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

PFM-42V1 YDT & YDB

Resistance Check

PFM42V1 Troubleshooting

PDP-04 10

YDB

Board

Drive

ICs

YDT

Board

Drive

ICs

XR address Board

Zsus Scan

Board

YDB

Board

Drive

ICs

YDT

Board

Drive

ICs

XR address Board

Zsus Scan

Board

YDB

Board

Drive

ICs

YDT

Board

Drive

ICs

XR address Board

Zsus Scan

Board

Ysus Scan

Board

Ysus Scan

Board

Ysus Scan

Board

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 B lack 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

PFM42V1 Troubleshooting

PDP-04 11

YDB

Board

Drive

ICs

YDT

Board

Drive

ICs

XR address Board

Zsus Scan

Board

YDB

Board

Drive

ICs

YDT

Board

Drive

ICs

XR address Board

Zsus Scan

Board

YDB

Board

Drive

ICs

YDT

Board

Drive

ICs

XR address Board

Zsus Scan

Board

Ysus Scan

Board

Ysus Scan

Board

Ysus Scan

Board

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 -Board B) 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)

PFM42V1 Troubleshooting

PDP-04 12

PFM42V1 Troubleshooting

YDB

Board

Drive

ICs

YDT

Board

Drive

ICs

XR address Board

Zsus Scan

Board

YDB

Board

Drive

ICs

YDT

Board

Drive

ICs

XR address Board

Zsus Scan

Board

Ysus Scan

Board

Ysus Scan

Board

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

YDB

Board

Drive

ICs

YDT

Board

Drive

ICs

Control Board &

XL address Board

XR address Board

Zsus Scan

Board

Ysus Scan

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 lessthan 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 13

YDB

Board

Drive

ICs

YDT

Board

Drive

ICs

XR address Board

Zsus Scan

Board

Ysus Scan

Board

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

)

2nd– Check connections

between Ysus and Control boards are secure

. Connections & Voltages OK A) Replace Ysus B) Replace Control board

3rd– Check all voltages and

connections to Zsus board

Replace Zsus

(connections &

voltages OK

)

Zsus Scan

Board

YDB

Board

Drive

ICs

YDT

Board

Drive

ICs

XR address Board

Ysus Scan

Board

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)

PFM42V1 Troubleshooting

PDP-04 14

PFM42X1 Triage & Troubleshooting

Display Panel Assembly

Power to all Panel

Assb. PCBs

Power

Audio

Video

A-Board

G-Board

Control-Board

 Video Processing  Audio Processing  Main Microprocessor  Fan Control  AV Switching

Video Input 2 (HD15)

L-Board

 Audio

Amplifier

Control

Input

 Panel Pixel Control

 Power Sw.  IR Sensor  LEDS

H2-Board

Switches

H1-Board

YDB

Board

Drive ICs

YDT

Board

Drive ICs

Zsus Scan

Board

XLB address Board

XRB address Board

Composite Input

BKM-V10

Optional Video

Input Board

Dual Address

Scan

XLT address Board

XRT address Board

Fan 1

Fan 2

Fan 3

Temp. Sensor 1

Temp. Sensor 2

Temp. Sensor 3

Control

Data

Fan 4

Control

PFM42X1

Ysus Scan

Board

Plasma

Panel

 Power

Supplies

Video Input 1 (DVI)

Key Control Lines

ACD – 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

STBY 5V

CN801

Overall Component

Block Diagram

PDP-04 15

+ 36 hidden pages