1
Download Plasma Panel Monitors Triage & Troubleshooting Guide
Transcript
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 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 Plasma Panel Voltage Label ................................................ 5 PCB Location Diagram ...................................................... 34 PFM42V1 Triage & Troubleshooting................................... 6 FWD-50PX1 Vsus & VADR Check .................................... 36 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 Triage Chart ....................................................................... 35 FWD-50PX1 YDT & YDB Resistance Check ..................... 37 Panel Distortion Diagrams ................................................. 38 FWD50PX2 Triage & Troubleshooting.............................. 42 Overall Component Block Diagram ................................... 42 Panel Distortion Diagrams ..................................................11 PCB Location Diagram ...................................................... 43 PFM42X1 Triage & Troubleshooting................................. 15 FWD-50PX2 VS, VA, -Vy, Vsc Adjustments....................... 45 Overall Component Block Diagram ................................... 15 PCB Location Diagram ...................................................... 16 Triage Chart ....................................................................... 17 Triage Chart ....................................................................... 44 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 General PFM & FWD Plasma Monitor Information Address boards for Dual Scan Models X-Board (Address Board) X-Board (Address Board) FWD50PX2 Model Only Ysus-Board Zsus-Board (Scan Board) Plasma Panel IC IC PFM 4 ICs FWD 1 IC No Connection FWD50PX2 Model IC IC PFM Only X-Board (Address Board) X-Board (Address Board) FWD Only Control Board FFC RGB/YUV Input FFC A-Board IC Audio Input DVI Input COF (Chip On Film) IC IC IC FPC (Flexible Printed Circuit) FFC (Flat Flexible Cable) Audio Input Points for Disconnection General Plasma Panel Block Diagram PDP-04 2 General Information Service Modes and Adjustments Accessing & Navigating Service Modes A ASI510-Main 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 ASI510-Sub ADC - 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 - Contrast-R Contrast-G Contrast-B Bright-R Bright-G - PC CutOFF PC Gain DTV CutOFF DTV Gain CONTR Audio White Balance For Test For Sony - Bright-B - Clock - Phase - Auto AD Calibration UPD64012 Initalization - CONTG - CONTB - ERTR - ERTG -ERTB Temperature WB Default Data - EEPROM INIT Except WB Only WB Init Elapsed Time Serial No. - Model No. - Fill 0xFF -S-Init Good - Serial Mode - AGING ON/OFF - FAN ON/OFF - INIT GOOD - S-INIT GOOD - FAN FOR TEST - SELECT RS232 - REFER.SAVE -SENSOR3 - SENSOR1 - SENSOR2 - PC -DVI - Video -Copy WB Data - DTV - Contrast -IFC - Bright - CBW - Staturation - LDLY - Hue - YOF - Bright-CIP -LPF2 - Bright-CIP -PFC -SATUR-CIP -PK -TINT-CIP -DVCO - MDIN-CONT - MDIN-SATUR - MDIN-BRT - BOOST - SURROUND - BALANCE - 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 A PDP-04 3 General Information FWD50PX1 Place unit in Standby Mode Press DISPLAY → 5 → VOL + → POWER Use the Right & Left arrows to scroll through the main service mode categories Service Mode - EEPROM Initialize Chroma Decider AD Converter White Balance General Manual Control Preset Edit Service Staus A/ D Converter Adjustment White Balance Adjustment Adjustments per Repair & Board Replacement When any repair related to picture quality is perfromed PDP-04 - 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 4 General Information Label located on the back of the PDP VA VS raster 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 -Vy Vsc Plasma Panel Voltage Label Use the Up/Down arrows to scroll through the sub category items Power Supplies G-Board VA – Reference label on the rear of Plasma Panel for correct voltage level (Input and display a Full White raster for adjustment) Use the ENTER key to select and adjust a particular item VS – Reference label on the rear of Plasma Panel for correct voltage level (Input and display a Full White raster for adjustment) Board Replacement & Adjustments Standby 5V 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 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. Operating 5V 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 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 PDP-04 5 PFM42V1 Triage & Troubleshooting Display Panel Assembly YDT Board & Drive ICs PFM42V1 Plasma Panel Ysus Scan Board Overall Component Block Diagram YDT Board & Drive ICs Single Address Scan XL address Brd Section Zsus Scan Board XR address Board Control-Board & XL address Board Panel Pixel Control Video G-Board AC Input Power Supplies Power to all Panel Assb. PCBs CN801 1 3 Optional Video Input Boards L-Board A-Board Audio Power 2 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. Control 5 ACD Audio Amplifier TR-Board TL-Board RELAY STBY 5V VS ON Video Input 1 (DVI) Video Input 2 (HD15) Video Processing Audio Processing Main Microprocessor Fan Control AV Switching Control Fan 1 Control Fan 2 Control Fan 3 Data Temp. Sensor 1 Data Temp. Sensor 2 Data Temp. Sensor 3 H1-Board Switches BKM-V10 Composite Input H2-Board Power Sw. IR Sensor LEDS BKM-V11 Component Input PDP-04 6 PFM42V1 Troubleshooting PFM-42V1 Top of TV Rear View H2-Brd Temp Temp F A N #3 Temp G-Board YDT Ysus Fan #2 Zsus Fan #1 L-Brd A-Board YDB H1-Brd Control-Board & XL-Board XR -Board PCB Location Diagram PDP-04 7 PFM42V1 Troubleshooting PFM42V1 Board Reference Amber LED ON A G � Red LED ON No Green LED � � No Red LED No Green LED Stationary V or H No Video (Green No Video (Green Line Failure LED) (No Primer) LED) (Primer OK) � � � No Audio � � � Control Brd � AC Input Plasma Panel L 1-761-811-11 1-761-810-11 1-761-875-11 � Ysus Brd Part # 1-761871-11 Check Condition *� 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 PDP-04 Triage Chart 8 PFM42V1 Troubleshooting Ysus Board G Board CN806 PFM-42V1 VS, VA, -Vy, Vsc Adjustments NOTE: Measure -Vy & Vsc across resistors VA TP CN806 pins 1 & 2 GRND Side -Vy Adj. VR6 Vsc Adj. VR5 -Vy TP R8 VS Adj. RV203 VA Adj. RV204 VS & VA GRND Vsc TP R60 GRND Side PDP-04 VS TP CN806 pins 8,9,10 9 PFM42V1 Troubleshooting PFM-42V1 YDT & YDB Resistance Check VOM ~3MΩ YDT Ohms COM VΩ VOM 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. YDB ~3MΩ Ohms COM PDP-04 VΩ 10 PFM42V1 Troubleshooting Panel Distortion Diagrams No Video (Horizontal Black Bar) lower 1/2 of screen YDT Board & Drive ICs Ysus Scan Board Zsus Scan Board YDB Board & Drive ICs Control Board & XL address Board 1 st – 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) XR address Board No Video (Horizontal Black Bar) upper 1/2 of screen YDT Board & Drive ICs Ysus Scan Board Zsus Scan Board YDB Board & Drive ICs Control Board & XL address Board 1 st – 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) XR address Board No Video (Vertical Black Bar ) 1/2 of screen YDT Board & Drive ICs 1 st – Confirm secure connections between Control /XL Board and the Panel Assembly . Ysus Scan Board Zsus Scan Board YDB Board & Drive ICs Control Board & XL address Board PDP-04 Replace Control /XL Board (connections & Flex Cable OK) Replace Panel Assembly (Flex Cable NG) XR address Board 11 PFM42V1 Troubleshooting No Video (Vertical Black Bar ) 1/2 of screen YDT Board & Drive ICs Ysus Scan Board Zsus Scan Board 1 st – Confirm secure connections between XR and Control /XL Boards . 2 nd – Confirm 5V and VA voltages to XR board . 3 rd – Replace boards in the following order . A) Replace XR -Board B) Replace Control Board YDB Board & Drive ICs Control Board & XL address Board XR address Board Single Vertical Black Line (right side of screen ) YDT Board & Drive ICs Ysus Scan Board Zsus Scan Board 1st – Confirm secure connections between XR and Control/XL Board. 3rd – Replace XR board Replace Panel Assembly for defective flex cable ICs YDB Board & Drive ICs Control Board & XL address Board 2 nd – Check the drive ICs on the flex cables between the XR and Panel for physical damage . XR address Board Single Vertical Black Line (left side of screen ) YDT Board & Drive ICs Ysus Scan Board Zsus Scan Board 2 nd – Check the drive ICs on the flex cables between the Control/XL board and Panel for physical damage . 3 rd – Replace Control/XL board (Flex ICs OK) Replace Panel Assembly for defective flex cable ICs YDB Board & Drive ICs Control Board & XL address Board PDP-04 1st – Confirm secure connections between Control / XL Board and the Panel Assembly. XR address Board 12 PFM42V1 Troubleshooting Single Horizontal Black Line (upper half of screen ) YDT Board & Drive ICs Ysus Scan Board Zsus Scan Board YDB Board & Drive ICs Control Board & XL address Board 1st – Confirm secure connections between YDT and Panel Assembly . 2 nd – Check the drive ICs on the YDT board for physical damge . Replace Panel Assembly if flex cable is damaged Replace YDT board if Ics are damaged . XR address Board Single Horizontal Black Line (lower half of screen ) Ysus Scan Board YDT Board & Drive ICs Zsus Scan Board YDB Board & Drive ICs Control Board & XL address Board 1 st – 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 . XR address Board Less-Than ½ Screen Horizontal Black Bar YDT Board & Drive ICs Ysus Scan Board Zsus Scan Board YDB Board & Drive ICs 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 . Control Board & XL address Board PDP-04 1st – Replace the YDT or YDB board depending on where the horizontal black bar is located on the screen. XR address Board 13 PFM42V1 Troubleshooting No Video – Black Raster YDT Board & Drive ICs Ysus Scan Board Zsus Scan Board YDB Board & Drive ICs 1 st – 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 ) Control Board & XL address Board 2 nd – Check connections between Ysus and Control boards are secure . Connections & Voltages OK A) Replace Ysus B) Replace Control board 3 rd – Check all voltages and connections to Zsus board . Replace Zsus (connections & voltages OK ) XR address Board Pixelization & Black Areas In Video YDT Board & Drive ICs Ysus Scan Board Zsus Scan Board 1 st – Confirm connections and power supply voltages (VS & 5V) to Zsus board are secure . Confirm Flex cable connections between Zsus board and Panel . 2 nd – A) Replace Zsus board (all connections and voltages OK ) B) Replace G-board (voltages NG) C) Replace Plasma Panel (Flex cable NG) YDB Board & Drive ICs Control Board & XL address Board PDP-04 XR address Board 14 PFM42X1 Triage & Troubleshooting Display Panel Assembly PFM42X1 XLT address Board Overall Component Block Diagram Dual Address Scan YDT Board & Drive ICs Ysus Scan Board XRT address Board Plasma Panel Zsus Scan Board YDB Board & Drive ICs XLB address Board XRB address Board Control-Board Panel Pixel Control Video G-Board AC Input Power to all Panel Assb. PCBs L-Board A-Board Power Power Supplies CN801 1 2 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. Optional Video Input Board 3 5 Audio ACD RELAY STBY 5V VS ON Video Input 1 (DVI) Video Input 2 (HD15) Video Processing Audio Processing Main Microprocessor Fan Control AV Switching Control Fan 1 Control Fan 2 Control Fan 3 Control Fan 4 Data Temp. Sensor 1 Data Audio Amplifier L R L R Temp. Sensor 2 Data Temp. Sensor 3 H1-Board Switches BKM-V10 Composite Input PDP-04 Control H2-Board Power Sw. IR Sensor LEDS 15 PFM42X1 Troubleshooting PFM-42X1 Top of TV Rear View H2-Brd XRT-Board Temp Temp XLT-Board Temp G-Board YDT Ysus Control-Board Fan #2 Fan #3 Zsus L-Brd Fan #1 A-Board YDB Fan #4 H1-Brd XRB -Board XLB -Board PCB Location Diagram PDP-04 16 PFM42X1 Troubleshooting PFM42X1 Board Reference Amber LED ON A G � Red LED ON No Green LED � � No Red LED No Green LED Stationary V or H No Video (Green No Video (Green Line Failure LED) (No Primer) LED) (Primer OK) � � � No Audio � � � Control Brd � AC Input Plasma Panel L 1-761-970-11 1-761-969-11 1-761-992-11 � Ysus Brd Part # 1-761-977-11 Check Condition *� 1-805-659-11 � 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 17 PFM42X1 Troubleshooting PFM-42X1 VS, VA, -Vy, Vsc Adjustments PDP-04 18 PFM42X1 Troubleshooting PFM-42X1 YDT & YDB Resistance Check VOM + - 1.3MΩ YDT 2.3MΩ ~2MΩ Ohms 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 ~2MΩ ohms 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. VOM ~2MΩ YDB Ohms - PDP-04 1.3MΩ VΩ 2.3MΩ COM + 19 PFM42X1 Troubleshooting Panel Distortion Diagrams XLT address Board XRT address Board No Video (Horizontal Black Bar) lower 1/2 of screen YDT Board & Drive ICs Zsus Scan Board Ysus Scan Board YDB Board & Drive ICs XLB address Board XRB address Board XLT address Board XRT address Board 1 st – 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 YDT Board & Drive ICs Zsus Scan Board Ysus Scan Board YDB Board & Drive ICs XLB address Board XRB address Board XLT address Board XRT address Board 1 st – 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 YDT Board & Drive ICs 1 st – Confirm secure connections between XLB Board and the Panel Assembly . Zsus Scan Board Ysus Scan Board YDB Board & Drive ICs 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 . XLB address Board PDP-04 Replace XLB Board (connections & Flex Cable OK ) Replace Panel Assembly (Flex Cable NG) XRB address Board 20 PFM42X1 Troubleshooting XLT address Board XRT address Board No Video (Vertical Black Box) 1/4 of screen Ysus Scan Board YDT Board & Drive ICs 1 st – Confirm secure connections between XLT Board and the Panel Assembly . Zsus Scan Board YDB Board & Drive ICs 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 . XLB address Board XRB address Board XLT address Board XRT address Board Single Vertical Black Line (right side of screen ) Ysus Scan Board YDT Board & Drive ICs 1st – Confirm secure connections between XLT and Panel Assembly . Zsus Scan Board YDB Board & Drive ICs XLB address Board XRB address Board XLT address Board XRT address Board 2 nd – Check the drive ICs on the flex cables between the XR and Panel for physical damage . 3rd – Replace XLT board (connections and ICs OK ) Replace Panel Assembly for defective Flex cable Ics and/or damaged Flex cable . 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 . Single Vertical Black Line (left side of screen ) Ysus Scan Board YDT Board & Drive ICs Zsus Scan Board YDB Board & Drive ICs XLB address Board PDP-04 XRB address Board 2 nd – Check the drive ICs on 1st – Confirm secure the flex cables between the connections between XLB XLB board and Panel for Board and the Panel Assembly . physical damage . 3 rd – Replace XLB board (Flex cable and ICs OK) Replace Panel Assembly for defective flex cable ICs 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 . 21 PFM42X1 Troubleshooting XLT address Board XRT address Board Single Horizontal Black Line (upper half of screen ) Ysus Scan Board YDT Board & Drive ICs Zsus Scan Board YDB Board & Drive ICs XLB address Board XRB address Board XLT address Board XRT address Board 1st – Confirm secure connections between YDT and Panel Assembly . 2nd – Check the drive ICs on the YDT board for physical damge . Replace Panel Assembly if flex cable is damaged Replace YDT board if Ics are damaged . Single Horizontal Black Line (lower half of screen ) Ysus Scan Board YDT Board & Drive ICs Zsus Scan Board 1 st – Confirm secure connections between YDB and Panel Assembly Replace YDB board if ICs are damaged . YDB Board & Drive ICs XLB address Board XRB address Board XLT address Board XRT address Board Less-Than ½ Screen Horizontal Black Bar YDT Board & Drive ICs st Ysus Scan Board Zsus Scan Board YDB Board & Drive ICs 1 – Replace the YDT or YDB board depending on where the horizontal black bar is located on the screen . 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 . XLB address Board PDP-04 2nd – Check the drive ICs on the YDB board for physical damage . XRB address Board 22 PFM42X1 Troubleshooting XLT address Board XRT address Board No Video – Black Raster YDT Board & Drive ICs Zsus Scan Board Ysus Scan Board YDB Board & Drive ICs 1 st – 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 ) XLB address Board 2 nd – Check connections between Ysus and Control boards are secure . Connections & Voltages OK A) Replace Ysus B) Replace Control board 3 rd – Check all voltages and connections to Zsus board . Replace Zsus (connections & voltages OK ) XRB address Board Control Board XLT address Board XRT address Board Pixelization & Black Areas In Video Ysus Scan Board YDT Board & Drive ICs Zsus Scan Board 1 st – 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) YDB Board & Drive ICs XLB address Board PDP-04 XRB address Board 23 FWD42PV1 Triage & Troubleshooting Display Panel Assembly FWD42PV1 Overall Component Block Diagram YDT Board & Drive ICs Ysus Scan Board YDB Board & Drive ICs Single Address Scan Zsus Scan Board Plasma Panel XLB address Board XRB address Board Control-Board Panel Pixel Control Video G-Board AC Input Power to all Panel Assb. PCBs L-Board A-Board Audio Power Power CN801 Supplies 1 2 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. Optional Video Input Board 3 7 ACD Control Fan 1 RELAY Control Fan 2 Control Fan 3 Control Fan 4 Control Fan 5 Data Temp. Sensor 1 STBY 5V VS ON Video Input 1 (DVI) Video Input 2 (HD15) Video Processing Audio Processing Main Microprocessor Fan Control AV Switching Data Data L R L R Temp. Sensor 3 Switches BKM-V10 Audio Amplifier Temp. Sensor 2 H1-Board Composite Input PDP-04 Control H2-Board Power Sw. IR Sensor LEDS 24 FWD42PV1 Troubleshooting FWD-42V1 Top of TV Rear View H2-Brd Temp Temp Temp G-Board YDT Ysus-Board Fan #2 L-Brd YDB Fan #3 Fan #4 Zsus-Board A-Board Fan #1 Fan #5 Control-Board XR -Board XL-Board PCB Location Diagram PDP-04 25 FWD42PV1 Troubleshooting FWD42PV1 Board Reference A 2 Blinks 3 Blinks � � 4 Blinks * � G Control Brd 5 Blinks Alternate Red & Green LED Flash � � � � Amber LED ON Stationary V or H Line Failure Red LED ON No Green LED � � � No Red LED No Video (Green No Green LED LED) (No Primer) � � � No Audio � � � � � � � � � Fan #1 Fan #2 Fan #3 Fan #4 Fan #5 1-789-203-11 Check Condition 1-787-338-11 1-787-338-11 1-787-338-11 1-787-338-11 1-787-338-11 *� Plasma Panel � � � Temp #1 Temp #2 Temp #3 Temp 1-789-203-11 1-789-203-11 � � Fan 1-805-839-11 1-789-203-11 � L Poor Ventilation Panel 1-789-201-11 1-789-205-11 � AC Input Part # 1-789-209-11 � Ysus Brd Problem No Video (Green LED) (Primer OK) 1-789-200-11 Check Condition 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 26 FWD42PV1 Troubleshooting CN807 G Board Ysus Board FWD-42PV1 VS, VA, -Vy, Vsc Adjustments VS TP CN807 pins 1, 2 VS & VA GRND VA TP CN806 pin 6 Vsc TP R60 Vsc Adj. -Vy Adj. VS Adj. VR600 GRND Side -Vy TP R8 VA Adj. VR700 GRND Side PDP-04 27 FWD42PV1 Troubleshooting FWD-42PV1 YDT & YDB Resistance Check VOM ~3MΩ YDT Ohms 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. VOM ~3MΩ YDB Ohms COM PDP-04 VΩ 28 FWD42PV1 Troubleshooting Panel Distortion Diagrams No Video (Horizontal Black Bar) lower 1/2 of screen YDT Board & Drive ICs Zsus Scan Board Ysus Scan Board YDB Board & Drive ICs XL address Board 1 st – 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) XR address Board No Video (Horizontal Black Bar) upper 1/2 of screen YDT Board & Drive ICs Zsus Scan Board Ysus Scan Board YDB Board & Drive ICs XL address Board 1 st – 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) XR address Board No Video (Vertical Black Bar ) 1/2 of screen YDT Board & Drive ICs Zsus Scan Board Ysus Scan Board YDB Board & Drive ICs XL address Board PDP-04 1 st – Confirm secure connections between XL Board and the Panel Assembly . Replace XL Board (connections & Flex Cable OK ) Replace Panel Assembly (Flex Cable NG) XR address Board 29 FWD42PV1 Troubleshooting No Video (Vertical Black Bar ) 1/2 of screen YDT Board & Drive ICs Ysus Scan Board Zsus Scan Board 1 st – Confirm secure connections between XR , XL, and Control Boards . 2 nd – Confirm 5V and VA voltages to XR board . 3 rd – Replace boards in the following order . A) Replace XR -Board B) Replace Control Board YDB Board & Drive ICs XL address Board XR address Board Single Vertical Black Line (right side of screen ) YDT Board & Drive ICs Zsus Scan Board Ysus Scan Board YDB Board & Drive ICs XL address Board 1st – Confirm secure connections between XR , XL, and Control Boards . 2 nd – Check the drive ICs on the flex cables between the XR and Panel for physical damage . 3rd – Replace XR board Replace Panel Assembly for defective flex cable ICs XR address Board Single Vertical Black Line (left side of screen ) YDT Board & Drive ICs Zsus Scan Board Ysus Scan Board 3 rd – Replace XL board (Flex ICs OK) Replace Panel Assembly for defective flex cable ICs YDB Board & Drive ICs XL address Board PDP-04 2 nd – Check the drive ICs on 1st – Confirm secure the flex cables between the XL connections between XL Board board and Panel for physical and the Panel Assembly . damage . XR address Board 30 FWD42PV1 Troubleshooting Single Horizontal Black Line (upper half of screen ) YDT Board & Drive ICs Zsus Scan Board Ysus Scan Board YDB Board & Drive ICs XL address Board 1 st – Confirm secure connections between YDT and Panel Assembly . 2nd – Check the drive ICs on the YDT board for physical damge . Replace Panel Assembly if flex cable is damaged Replace YDT board if Ics are damaged . XR address Board Single Horizontal Black Line (lower half of screen ) YDT Board & Drive ICs Zsus Scan Board Ysus Scan Board YDB Board & Drive ICs XL address Board 1st – Confirm secure connections between YDB and Panel Assembly 2nd – Check the drive ICs on the YDB board for physical damage . Replace Panel Assembly if flex cable is damaged Replace YDB board if ICs are damaged . XR address Board Less-Than ½ Screen Horizontal Black Bar YDT Board & Drive ICs Zsus Scan Board Ysus Scan Board YDB Board & Drive ICs 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 . XL address Board PDP-04 1 st – Replace the YDT or YDB board depending on where the horizontal black bar is located on the screen . XR address Board 31 FWD42PV1 Troubleshooting No Video – Black Raster YDT Board & Drive ICs Ysus Scan Board Zsus Scan Board YDB Board & Drive ICs 1st – Check Flex cable connections between Ysus & YDT/YDB boards . Check VS and 5V power supplies to Ysus board. Check for screen 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) Replace G-board (Volatge (s) NG) Replace Ysus (Priming NG) Replace Control Board (Priming OK ) XL address Board XR address Board Control Board Pixelization & Black Areas In Video YDT Board & Drive ICs Zsus Scan Boar d Ysus Scan Board 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) YDB Board & Drive ICs XL address Board PDP-04 XR address Board 32 FWD50PX1 Triage & Troubleshooting Display Panel Assembly FWD50PX1 Address Board Address Board YDT Board & Drive ICs Overall Component Block Diagram Address Board Xsus Scan Board Plasma Panel Ysus Scan Board Dual Address Scan Address Board YDB Board & Drive ICs Address Board Address Board Address Board Address Board Control-Board G-Board CN801 AC Input 1 Power Supplies 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. 2 3 7 RELAY H2-Board B-Board Power Switch Switches H1-Board Video Processing Main Microprocessor IR Sensor LEDS STBY 5V VS ON Q-Board Power Video Input 1 (DVI) Video Input 2 (HD15) Optional Video Input Boards Video Audio Processing Fan Control AV Switching SP-Board Control Audio Control Fan 1 Control Fan 2 Control Control BKM-V10 Audio Amplifier L R L R Fan 3 Fan 4 Composite Input Data Temp. Sensor 1 BKM-V11 Data Temp. Sensor 2 Data Temp. Sensor 3 Component Input PDP-04 Control Video Power to all Panel Assb. PCBs Power ACD Panel Pixel Control 33 FWD50PX1 Troubleshooting FWD-50PX1 Top of TV Rear View H2-Brd Address Board Address Board Address Board Address Board S-Brd Fan #2 S-Brd Fan #1 S-Brd Digital Video Board YDT Power Unit Board Q-Board X Drive U1-Brd B-Board YDB Y Drive Fan #3 Fan #4 Interface-Board SP-Board Address Board Address Board Address Board Address Board H1-Brd PCB Location Diagram PDP-04 34 FWD50PX1 Troubleshooting FWD50PX1 Board Reference B 2 Blinks 3 Blinks � � Q 4 Blinks � 5 Blinks 6 Blinks Alternate Red & Green LED Flash Amber LED ON � � � � � � G Interface Brd � Digital Video Brd � Red LED ON Stationary V or H No Red LED No Green LED Line Failure No Green LED � � � � No Video (Green LED) (Primer OK) � � � No Audio � � � � � � � � Fan #1 Fan #2 Fan #3 Fan #4 9-885-061-46 9-885-061-44 Temp. #3 Check Condition 1-787-088-11 1-787-243-11 1-787-243-11 *� *� *� *� Temp. #2 � 1-805-676-11 A-1068-935-A A-1068-935-A A-1068-935-A � L � Poor Ventilation Panel Temp A-1062-627-A 1-787-088-11 Plasma Panel Temp. #1 A-1070-525-A 9-885-061-45 � AC Input Part # 1-468-872-11 � Ysus Brd Problem No Video (Green LED) (No Primer) A-1068-935-A Check Condition Fan 3.3V 5V 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 35 FWD50PX1 Troubleshooting FWD-50PX1 Vsus & VADR Check PDP-04 36 FWD50PX1 Troubleshooting FWD-50PX1 YDT & YDB Resistance Check PDP-04 37 FWD50PX1 Troubleshooting Panel Distortion Diagrams Address Board Address Board Address Board Address Board No Video (Horizontal Black Bar) lower 1/2 of screen Ysus Scan Board YDT Board & Drive ICs Xsus Scan Board YDB Board & Drive ICs Address Board Address Board Address Board Address Board Address Board Address Board Address Board Address Board 1 st – 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 Ysus Scan Board YDT Board & Drive ICs Xsus Scan Board YDB Board & Drive ICs Address Board Address Board Address Board Address Board Address Board Address Board Address Board Address Board 1 st – 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 Ysus Scan Board YDT Board & Drive ICs Xsus Scan Board YDB Board & Drive ICs Address Board PDP-04 Address Board Address Board Address Board 1 st – 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 . 38 FWD50PX1 Troubleshooting Address Board Address Board Address Board Address Board No Video (Vertical Black Box) 1/8 of screen YDT Board & Drive ICs Xsus Scan Board Ysus Scan Board YDB Board & Drive ICs Address Board Address Board Address Board Address Board Address Board Address Board Address Board Address Board 1 st – 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 YDT Board & Drive ICs Xsus Scan Board Ysus Scan Board 1st – Confirm secure connections between Address board and Panel Assembly. YDB Board & Drive ICs Address Board Address Board Address Board Address Board Address Board Address Board Address Board Address Board 2 nd – Check the drive ICs on the flex cables between the Address and Panel for physical damage . 3rd – Replace Address board (connections and ICs OK ) Replace Panel Assembly for defective Flex cable ICs and/or damaged Flex cable . 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 YDT Board & Drive ICs Xsus Scan Board Ysus Scan Board 3 rd – Replace Address board (Flex cable and ICs OK) Replace Panel Assembly for defective flex cable ICs YDB Board & Drive ICs Address Board PDP-04 2 nd – Check the drive ICs on 1st – Confirm secure the flex cables between the connections between Address Address board and Panel for Board and the Panel Assembly . physical damage . Address Board Address Board 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 . 39 FWD50PX1 Troubleshooting Address Board Address Board Address Board Address Board Single Horizontal Black Line (upper half of screen ) YDT Board & Drive ICs Xsus Scan Board Ysus Scan Board YDB Board & Drive ICs Address Board Address Board Address Board Address Board Address Board Address Board Address Board Address Board 1st – Confirm secure connections between YDT and Panel Assembly . 2 nd – Check the drive ICs on the YDT board for physical damge . Replace Panel Assembly if flex cable is damaged Replace YDT board if Ics are damaged . Single Horizontal Black Line (lower half of screen ) YDT Board & Drive ICs Xsus Scan Board Ysus Scan Board 1 st – Confirm secure connections between YDB and Panel Assembly Replace YDB board if ICs are damaged . YDB Board & Drive ICs Address Board Address Board Address Board Address Board Address Board Address Board Address Board Address Board 2nd – Check the drive ICs on the YDB board for physical damage . Less -Than ½ Screen Horizontal Black Bar YDT Board & Drive ICs st Zsus Scan Board Ysus Scan Board YDB Board & Drive ICs 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 . Address Board PDP-04 1 – Replace the YDT or YDB board depending on where the horizontal black bar is located on the screen. Address Board Address Board Address Board 40 FWD50PX1 Troubleshooting Address Board Address Board Address Board Address Board No Video – Black Raster Ysus Scan Board YDT Board & Drive ICs Xsus Scan Board YDB Board & Drive ICs 1 st – 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 ) Address Board Address Board Address Board 2 nd – Check connections between Ysus and Control boards are secure . Connections & Voltages OK A) Replace Ysus B) Replace Control board 3 rd – Check all voltages and connections to Xsus board . Replace Xsus (connections & voltages OK ) Address Board Control Board Address Board Address Board Address Board Address Board Pixelization & Black Areas In Video YDT Board & Drive ICs Xsus Scan Board Ysus Scan Board YDB Board & Drive ICs Address Board PDP-04 Address Board Address Board 1 st – Confirm connections and power supply voltages (VS & 5V) to Zsus board are secure . Confirm Flex cable connections between Zsus board and Panel . 2 nd – A) Replace Zsus board (all connections and voltages OK ) B) Replace G-board (voltages NG) C) Replace Plasma Panel (Flex cable NG) Address Board 41 FWD50PX2 Triage & Troubleshooting Display Panel Assembly Ysus Scan (YDT) Board & Drive ICs FWD50PX2 Ysus Scan Board Overall Component Block Diagram Ysus Scan (YDT) Board & Drive ICs Single Address Scan Zsus Scan Board Plasma Panel XL address Brd XC address Brd XR address Brd Control-Board Control A-Board L-Board Audio Power AC Input CN801 Power Supplies 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. Optional Video Input Boards 1 2 3 7 ACD Control Fan 1 RELAY Control Fan 2 Control Fan 3 Control Fan 4 Control Fan 5 Control Fan 6 Data Temp. Sensor 1 STBY 5V VS ON Video Input 1 (DVI) Video Input 2 (HD15) H1-Board Switches Video Processing Audio Processing Main Microprocessor Fan Control AV Switching Data Audio Amplifier L R L R Temp. Sensor 2 Data Temp. Sensor 3 BKM-V10 Composite Input BKM-V11 Component Input PDP-04 Video Power to all Panel Assb. PCBs G-Board Panel Pixel Control H2-Board Power Sw. IR Sensor LEDS 42 FWD50PX2 Troubleshooting FWD-50PX2 Top of TV Rear View H2-Brd Temp Temp Temp A-Board YDT G-Board ZsusBoard Ysus-Board Fan #2 Fan #3 Fan #4 Control-Board L-Brd YDB Fan #1 XL-Board XC -Board Fan #5 Fan #6 I-Brd XR -Board H1-Brd PCB Location Diagram PDP-04 43 FWD50PX2 Troubleshooting FWD50PX2 Board Reference A 2 Blinks 3 Blinks � � 4 Blinks * � G Control Brd 5 Blinks Alternate Red & Green LED Flash � � � � Amber LED ON Red LED ON No Green LED � � � No Red LED No Green LED Stationary V or No Video (Green H Line Failure LED) (No Primer) � � � No Audio � � � � � � � � � � Fan #1 Fan #2 Fan #3 Fan #4 Fan #5 Fan #6 1-789-375-11 Check Condition 1-787-434-11 1-787-434-11 1-787-434-11 1-787-437-11 1-787-434-11 1-787-437-11 *� Plasma Panel � � � Temp #1 Temp #2 Temp #3 Temp 1-789-203-11 1-789-203-11 � � Fan 1-802-006-11 1-789-203-11 � L Poor Ventilation Panel 1-789-374-11 1-789-386-11 � AC Input Part # 1-789-380-11 � Ysus Brd Problem No Video (Green LED) (Primer OK) 1-789-376-11 Check Condition 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 44 FWD50PX2 Troubleshooting FWD-50PX2 VS, VA, -Vy, Vsc Adjustments Ysus Board CN806 Vsc GRND G Board VS TP CN806 pins 1, 2, 3 -Vy GRND Vsc TP -Vy TP -Vy Adj. VS & VA GRND VS Adj. VR600 Vsc Adj. VA TP CN806 pins 9 & 10 VA Adj. VR700 Two Vertically mounted boards on the Ysus Board PDP-04 45 FWD50PX2 Troubleshooting FWD-50PX2 YDT & YDB Resistance Check VOM ~3MΩ Ohms YDT COM VΩ VOM 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. YDB ~3MΩ Ohms COM PDP-04 VΩ 46 FWD50PX2 Troubleshooting Panel Distortion Diagrams No Video (Horizontal Black Bar) lower ½ of screen YDT Board & Drive ICs Zsus Scan Board Ysus Scan Board YDB Board & Drive ICs XL address Brd 1 st – 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) XC address Brd XR address Brd No Video (Horizontal Black Bar) upper ½ of screen YDT Board & Drive ICs Zsus Scan Board Ysus Scan Board YDB Board & Drive ICs XL address Brd 1 st – 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) XC address Brd XR address Brd No Video (Vertical Black Bar ) 1/3 of screen YDT Board & Drive ICs 1 st – Confirm secure connections between XL and Control Boards . Zsus Scan Board Ysus Scan Board 2 nd – Confirm 5V and VA voltages to XL board . 3 rd – Replace boards in the following order . A) Replace XL-Board B) Replace Control Board YDB Board & Drive ICs XL address Brd PDP-04 XC address Brd XR address Brd 47 FWD50PX2 Troubleshooting No Video (Vertical Black Bar) 1/3 of screen YDT Board & Drive ICs 1st – Confirm secure connections between XR and Control Boards . Ysus Scan Board 2nd – Confirm 5V and VA voltages to XR board. Zsus Scan Board YDB Board & Drive ICs 3rd – Replace boards in the following order . A) Replace XR-Board B) Replace Control Board 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 . XL address Brd XC address Brd XR address Brd Single Vertical Black Line (right side of screen ) YDT Board & Drive ICs Ysus Scan Board Zsus Scan Board 1st – Confirm secure connections between XR and Control Board . 3 rd – Replace XR board Replace Panel Assembly for defective flex cable ICs YDB Board & Drive ICs XL address Brd 2 nd – Check the drive ICs on the flex cables between the XR and Panel for physical damage . XC address Brd XR address Brd Single Vertical Black Line (left side of screen ) YDT Board & Drive ICs Ysus Scan Board Zsus Scan Board YDB Board & Drive ICs XL address Brd PDP-04 XC address Brd XR address Brd 1st – Confirm secure connections between XL and Control Board . 2 nd – Check the drive ICs on the flex cables between the XL and Panel for physical damage . 3 rd – Replace XL board Replace Panel Assembly for defective flex cable ICs 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 . 48 FWD50PX2 Troubleshooting Single Horizontal Black Line (upper half of screen ) Ysus Scan Board YDT Board & Drive ICs Zsus Scan Board YDB Board & Drive ICs XL address Brd 1st – Confirm secure connections between YDT and Panel Assembly . 2 nd – Check the drive ICs on the YDT board for physical damge . Replace Panel Assembly if flex cable is damaged Replace YDT board if Ics are damaged . XC address Brd XR address Brd Single Horizontal Black Line (lower half of screen ) Ysus Scan Board YDT Board & Drive ICs Zsus Scan Board YDB Board & Drive ICs XL address Brd 1 st – 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 . XC address Brd XR address Brd Single Defective Driver Board Buffer IC on YDT or YDB Board YDT Board & Drive ICs Zsus Scan Board Ysus Scan Board YDB Board & Drive ICs XL address Board PDP-04 XR address Board 1 st – Replace the YDT or YDB board depending on where the horizontal black bar is located on the screen . 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 . YDT Brd Ysus Zsus YDB Brd XL address Board XR address Board 49 FWD50PX2 Troubleshooting No Video – Black Raster YDT Board & Drive ICs Zsus Scan Board Ysus Scan Board 1 st – 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 ) YDB Board & Drive ICs XL address Brd 2 nd – Check connections between Ysus and Control boards are secure . Connections & Voltages OK A) Replace Ysus B) Replace Control board 3 rd – Check all voltages and connections to Zsus board . Replace Zsus (connections & voltages OK ) XC address Brd XR address Brd Control Board Pixelization & Black Areas In Video Ysus Scan Board YDT Board & Drive ICs Zsus Scan Board 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) YDB Board & Drive ICs XL address Brd PDP-04 XC address Brd XR address Brd 50 and i.Link are trademarks of Sony Electronics PDP040607 2007 Sony Electronics, Inc. EMCSA - A Service Company 16530 Via Esprillo San Diego, CA 92127 Reproduction in whole or part without written permission is prohibited. All rights reserved 06/08/07
