Pioneer PDP-42A3HD Training & Troubleshooting Manual
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Pioneer PDP-42A3HD Training & Troubleshooting Manual

Pioneer PDP-42A3HD Training & Troubleshooting Manual

42 inch plasma display
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See also: Service Manual
42 Inch Plasma Display
Training &

Trouble Shooting Guide

G-5
PDP-42A3HD
PDP-4214HD
Technical Training Department
1925 E. Dominguez Street
Long Beach, CA 90810

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Summary of Contents for Pioneer PDP-42A3HD

  • Page 1: Trouble Shooting Guide

    42 Inch Plasma Display Training & Trouble Shooting Guide PDP-42A3HD PDP-4214HD Technical Training Department 1925 E. Dominguez Street Long Beach, CA 90810...

  • Page 3: Table Of Contents

    Contents Controls and Connections……..…...4~7 White Balance Adjustment.…….…...30 Front View……………….……………….4 Power Down Tip………….…………..31 Rear View…………………………….…..5 Troubleshooting (Tuner Module)...32~73 Remote Control………..…………..…...6~7 No Power………………………………32~33 Basic Block Diagrams………….……8~15 No HDMI………………..………..…..34~35 Overall Block Diagram……..…………8 No Component Signal………….…..36~37 ATSC Tuner Tuner Block……….……...9 No TV Signal………...………….…….38~39 Digital Block……………………..…..10~11 No Video or No S Video Signal….….40~43 DTT and Analog Block……..….…..…12~13 No Audio…………………………….…44~50...

  • Page 4: Controls And Connections

    Plasma Display Front view S TA N D B Y VC R D VD HDMI STANDB Y POWE R S TA N D B Y DT V DV D HDM I POWER button 6 OK button 2 STANDB Y indicator 7 MENU button 3 Current input source indicators 8 VOLUME –/+ buttons...

  • Page 5: Rear View

    Rear view INPUT VIDEO 3 AUDIO S-VIDEO 3 VIDEO 2 L-AUDIO-R S-VIDEO 2 L-AUDIO-R COMPONENT 2 COMPONENT 1 VIDEO AUDIO OPTICAL HDMI AUDIO DTV- ANTENNA SERVICE ONLY AC IN ANTENNA IN MONITOR OUT DIGITAL OUT VIDEO 1 L-AUDIO-R S-VIDEO 1 L-AUDIO-R HDMI / CABLE IN...

  • Page 6: Remote Control Unit

    Remote control unit HD WIDE : Adjusts the picture to fit the 16:9 wide aspect ratio. Available in DTV mode. INPUT HD WIDE INP UT : Displays all available input sources. AV SELECTION SOUND EFFECT SCREEN SIZE Press the button to select the required input source.
  • Page 7 VO L MUTING SPLIT SPLIT P IN P S WA P Slid e INPUT SHIFT SPLIT SPLIT CH + C H– FAVORITE DT V CH DELETE SIGNAL MT S LIS T SPLIT SPLIT P IN P S WA P INPUT SHIFT SPLIT SPLIT...

  • Page 8: Basic Block Diagrams

    (Power Supply) (Main CPU) (Tuner Block Analog & HDTV) (RGB Block) (Front Panel LED's)

  • Page 9: Atsc Tuner Tuner Block

    ATSC Block +3.3V CPU & MPEG Decoder +2.5V Customer Settings Operating System +3.3V +1.2V . D C-DC +A6VCC Converter Flash +5.0V EEPROM 16KB 4MByte +2.5V +2.5V +1.2V Linear Reg. Digital Channel UART0 (Commu nication) ATSC MDIN ATSC MDIN Decoder Tuner (TL955B2-SH) UART1 (RS232C) Communication...

  • Page 10: Digital Block

    1. Digital PCB Block A : Component Video input Block(BA7657) B : ADC and HDMI receiver Block(MST3388M) C : Real Timer Block(M41T81) D : RS232 communication part E : Micom Block(SDA6001+K4S641632H-TC60+AM29LV160DT) F : Deinterlace Block(MDIN150+K4S643232H-TC60) G : Sub-Video Decoder Block(VPC3230) H : Scaler Block(ASI510) I : LVDS transmitter Block(DS90C387)
  • Page 11 Block Description of DTT 1. DC-DC Block is composed of Regulators(BA05(5V), LP3965ES(1.2V), LP2995MX(VREF,VTT)) and SMPS powers(2V5VCC,3V3VCC,A6VCC). 2. UART Communication is composed of UART1(Communication), UART2(RS232), UART3(RS232 for debug) 3. The EEPROM block stores the current states, channels, and other user setting values. 4.

  • Page 12: Dtt And Analog Block

    2. DTT & Analog PCB Block A : Channel Demodulator Block(LGDT3303) B : ATSC Tuner Block(DTT7608) C : Analog Tuner Block(FQ1236) D : DDR SDRAM Block(HY5DU281622ET-H x 4) E : MPEG Decoder Block(TL955B2-SH) F : Audio Decoder Block(MSP4440) G : Video Switch Block(CX2069Q) H : Flash Rom Block(E28F320J3A) I : Power input Block J : Main Video decoder Block(uPD64012+HY57V161610DTC-7)
  • Page 13 3. Digital PCB Block A : Indication LED Block B : Audio AMP Block(TA2024B) C : AV input Block D : Control key Block...

  • Page 14: Factory Mode

    Block Description of Display 1. The ADC & HDMI receiver used on this board (MST3388-110). 2. The Video Decoder is composed of uPD64012 and VPC3230, converts from analog signal to digital video signal. UPD64012 is used for 480I sub picture only. 3.
  • Page 15 Display BLOCK D-H/V Sync & clk HDMI (~DE) HDMI A-INE[23:0] LVDS Tx L003 DS90C387 L003 9886 9886 MST3388 (~SOG) 8 Bit -110 A-H/V Sync & clk ATSC ATSC MDIN MDIN HDMI I2S & S/PDIF MDIN YPbPr 1 D-INO[23:0] YPbPr 1 BA7657 7657 HDMI I2S...

  • Page 16: Signal Flow Block Diagrams

    ATV Input(Main) D-H/V Sync & clk (~DE) HDMI HDMI A-INE[23:0] Panel LVDS Tx L003 DS90C387 L003 MST3388 (~SOG) 8 Bit -110 A-H/V Sync & clk ATSC ATSC MDIN MDIN HDMI I2S & S/PDIF HDMI I2S MDIN YPbPr 1 D-INO[23:0] YPbPr 1 Audio Audio BA7657...

  • Page 17: Analog Tuner Input Sub Block

    ATV Input(Sub) D-H/V Sync & clk HDMI (~DE) HDMI A-INE[23:0] Panel LVDS Tx L003 DS90C387 L003 MST3388 (~SOG) 8 Bit -110 A-H/V Sync & clk ATSC ATSC MDIN MDIN HDMI I2S & S/PDIF HDMI I2S MDIN YPbPr 1 D-INO[23:0] YPbPr 1 Audio Audio BA7657...

  • Page 18: Composite Input Main

    CVBS Input(Main) D-H/V Sync & clk HDMI HDMI (~DE) A-INE[23:0] Panel LVDS Tx L003 DS90C387 L003 MST3388 (~SOG) 8 Bit -110 A-H/V Sync & clk ATSC ATSC MDIN MDIN HDMI I2S & S/PDIF HDMI I2S MDIN YPbPr 1 D-INO[23:0] YPbPr 1 Audio Audio BA7657...

  • Page 19: Composite Input Sub

    CVBS Input(Sub) D-H/V Sync & clk HDMI HDMI (~DE) A-INE[23:0] Panel LVDS Tx L003 DS90C387 L003 MST3388 (~SOG) 8 Bit -110 A-H/V Sync & clk ATSC ATSC MDIN MDIN HDMI I2S & S/PDIF HDMI I2S MDIN YPbPr 1 D-INO[23:0] YPbPr 1 Audio Audio BA7657...

  • Page 20: S Input Main

    S Input(Main) D-H/V Sync & clk HDMI HDMI (~DE) A-INE[23:0] Panel LVDS Tx L003 DS90C387 L003 MST3388 (~SOG) 8 Bit -110 A-H/V Sync & clk ATSC ATSC MDIN MDIN HDMI I2S & S/PDIF HDMI I2S MDIN YPbPr 1 D-INO[23:0] YPbPr 1 Audio Audio BA7657...

  • Page 21: S Input Sub

    S Input(Sub) D-H/V Sync & clk HDMI HDMI (~DE) A-INE[23:0] Panel LVDS Tx L003 DS90C387 L003 MST3388 (~SOG) 8 Bit -110 A-H/V Sync & clk ATSC ATSC MDIN MDIN HDMI I2S & S/PDIF HDMI I2S MDIN YPbPr 1 D-INO[23:0] YPbPr 1 Audio Audio BA7657...

  • Page 22: Atsc (Hd Signal) Main

    ATSC Input(Main) D-H/V Sync & clk HDMI HDMI (~DE) A-INE[23:0] Panel LVDS Tx L003 DS90C387 L003 MST3388 (~SOG) 8 Bit -110 A-H/V Sync & clk ATSC ATSC MDIN MDIN HDMI I2S & S/PDIF HDMI I2S MDIN YPbPr 1 D-INO[23:0] YPbPr 1 Audio Audio BA7657...

  • Page 23: Atsc (Hd Signal) Sub

    ATSC Input(Sub) D-H/V Sync & clk (~DE) HDMI HDMI A-INE[23:0] Panel LVDS Tx L003 DS90C387 L003 MST3388 (~SOG) 8 Bit -110 A-H/V Sync & clk ATSC ATSC MDIN MDIN HDMI I2S & S/PDIF HDMI I2S MDIN YPbPr 1 D-INO[23:0] YPbPr 1 Audio Audio BA7657...

  • Page 24: Component Input Main

    Component Input(Main) D-H/V Sync & clk HDMI (~DE) HDMI A-INE[23:0] Panel LVDS Tx L003 DS90C387 L003 MST3388 (~SOG) 8 Bit -110 A-H/V Sync & clk ATSC ATSC MDIN MDIN HDMI I2S & S/PDIF HDMI I2S MDIN YPbPr 1 D-INO[23:0] YPbPr 1 Audio Audio BA7657...

  • Page 25: Component Input Sub

    Component Input(Sub) D-H/V Sync & clk HDMI (~DE) HDMI A-INE[23:0] Panel LVDS Tx L003 DS90C387 L003 MST3388 (~SOG) 8 Bit -110 A-H/V Sync & clk ATSC ATSC MDIN MDIN HDMI I2S & S/PDIF HDMI I2S MDIN YPbPr 1 D-INO[23:0] YPbPr 1 Audio Audio BA7657...

  • Page 26: Hdmi Input Main

    HDMI Input(Main) D-H/V Sync & clk (~DE) HDMI HDMI A-INE[23:0] Panel LVDS Tx L003 DS90C387 L003 MST3388 (~SOG) 8 Bit -110 A-H/V Sync & clk ATSC ATSC MDIN MDIN HDMI I2S & S/PDIF HDMI I2S MDIN YPbPr 1 D-INO[23:0] YPbPr 1 Audio Audio BA7657...

  • Page 27: Hdmi Input Sub

    HDMI Input(Sub) D-H/V Sync & clk (~DE) HDMI HDMI A-INE[23:0] Panel LVDS Tx L003 DS90C387 L003 MST3388 (~SOG) 8 Bit -110 A-H/V Sync & clk ATSC ATSC MDIN MDIN HDMI I2S & S/PDIF HDMI I2S MDIN YPbPr 1 D-INO[23:0] YPbPr 1 Audio Audio BA7657...

  • Page 28: Caption Input

    Caption Input D-H/V Sync & clk (~DE) HDMI HDMI A-INE[23:0] Panel LVDS Tx L003 DS90C387 L003 MST3388 (~SOG) 8 Bit -110 A-H/V Sync & clk ATSC ATSC MDIN MDIN HDMI I2S & S/PDIF HDMI I2S MDIN YPbPr 1 D-INO[23:0] YPbPr 1 Audio Audio BA7657...

  • Page 29: Input And Tuner Board Locations

    Tuner / Digital / Input & SMPS Power Modules To "2.5 Rear Section To "2.2 Exterior Section(1) Description P ar t No. SMPS Assy 150-2040 DTT_ANALOG Assy 010-2640 DIGITAL Assy 010-2741 EMI FILTER PCB Assy 010-2742 • • • • BRKT FAN-TOP 30172-01-001 FAN D05X12TL(50x50x10)

  • Page 30: White Balance Adjustment

    ADJUSTMENT At shipment, the unit is adjusted to its best conditions. Normally, it is not necessary to readjust even if an assembly is replaced. If the adjustment is shifted or if it becomes necessary to readjust because of part replacement, etc., perform the adjustment as described below. Any value changed in Service/Factory mode will be stored in memory as soon as it is changed.

  • Page 31: Power Down Tip

    Power Down – Quick Troubleshooting Tip Plasma Panel shuts down immediately After power on. First unplug the two connectors on the SMPS Assembly (the connectors with all brown wires). Next unplug the TMDS connector from the Display to the panel assembly (silver shielded connector).

  • Page 32: Troubleshooting (Tuner Module)

    1. No Power Preliminary Checkpoints Check the condition of the input power &cable connection. (JP730,JP701(DTT&Analog, JP709(Digital),JP230(AMP)) Check the condition of on-board regulators. Check for short circuits between each power terminal and the ground. No Power When Powered ON #1(M-7V) at JP730 Check SMPS (Power Supply Board) In Digital B/D...
  • Page 33 <Waveform 1 > <Waveform 4-1 > <Waveform 2 > <Waveform 5 > <Waveform 3 > <Waveform 6-1 >...

  • Page 34: No Hdmi

    2. No HDMI Signal Preliminary Checkpoints Check the condition of Conection of the HDMI input Connector Check the condition of Soldering state in HDMI input part. Check for short circuits between each power terminal and the ground. No HDMI signal #37,38 Check the state of soldering at U401...
  • Page 35 <Waveform 7 SCL > <Waveform 7 SDA > <Waveform 8 >...

  • Page 36: No Component Signal

    3. No Component Video Signal Preliminary Checkpoints Check the condition of connectin of the input component video signal. Check the condition of soldering state in U401 Check the short point in signal l ine. Check for short circuits between each power terminal and the ground. No Component signal (SMPTE Color Bars) #22,25,27...
  • Page 37 < Waveform 9 #22 > < Waveform 10 > < Waveform 9 #25 > < Waveform 11 > < Waveform 9 #27 > < Waveform 12 >...

  • Page 38: No Tv Signal

    4. No TV Signal Preliminary Checkpoints Check the condition of connectin of the input TV signal. Check the condition of soldering state in Tuner & input part Check the short point in signal line. Check for short circuits between each power terminal and the ground. No TV signal (SMPTE Color Bars) at U706...
  • Page 39 < Waveform 13 > < Waveform 12 > < Waveform 14 > < Waveform 11 >...

  • Page 40: No Video Or No S Video Signal

    5. No Video Signal (CVBS) Preliminary Checkpoints Check the condition of connectin of the input CVBS signal. Check the condition of soldering state in CVBS & input part Check the short point in signal line. Check for short circuits between each power terminal and the ground. No CVBS signal (SMPTE Color Bars) (1):VIDEO01...
  • Page 41 < Waveform 15 > < Waveform 12 > < Waveform 14 > < Waveform 11 >...
  • Page 42 6. No Video Signal (S-VHS) Preliminary Checkpoints Check the condition of connectin of the input S-VHS signal. Check the condition of soldering state in S-VHS & input part Check the short poi nt in signal line. Check for short circuits between each power terminal and the ground. No S-VHS signal (SMPTE Color Bars) (1):S-VIDEO01...
  • Page 43 < Waveform 16 C > < Waveform 17 Y > < Waveform 16 Y > < Waveform 12 > < Waveform 17 C > < Waveform 12 >...
  • Page 44 7. No Sound DVI Audio (Sine wave input) Preliminary Checkpoints Check the condition of connectin of the input DVI Audio R/L. Check the condition of soldering state in DVI Audio R/L &input part Check the short point in signal line. Check for short circuits between each power terminal and the ground.
  • Page 45 < Waveform 18 > < Waveform 21 > < Waveform 19 > < Waveform 20 >...
  • Page 46 8. No Sound in CVBS (Sine wave input) Preliminary Checkpoints Check the condition of connectin of the input CVBS Audio R/L. Check the condition of soldering state in CVBS Audio R/L & input part Check the short point in signal line. Check for short circuits between each power terminal and the ground.
  • Page 47 < Waveform 18 > < Waveform 21 > < Waveform 19 > < Waveform 20 >...

  • Page 48: No Audio

    9. No Audio in Component Input (Sine wave input) Preliminary Checkpoints Check the condition of connectin of the input Component Audio R/L. Check the condition of soldering state in Component Audio R/L &input part Check the short point in signal line. Check for short circuits between each power terminal and the ground.
  • Page 49 < Waveform 19 > < Waveform 20 > < Waveform 21 >...
  • Page 50 10. No TV Sound (Sine wave input) Preliminary Checkpoints Check the condition of connectin of the input TV SIF. Check the condition of soldering state in TV SIF input part. Check the short point in signal line. Check for short circuits between each power terminal and the ground. No Sound in TV input at U751...
  • Page 51 < Waveform 22 > < Waveform 20 > < Waveform 21 >...

  • Page 52: 11. No Caption

    11. No Caption Preliminary Checkpoints Check the back Solding state in 96 pin connector(JP12(Digital),JP701(DTT&Analog)) Check the CC_RD,GD,BD,FB,VD,HD signal in I C. Check the I2C between Micom and uPD64012 or EEPROM. Check the Flash Memory or SDRAM. CC in Remocon is O.K.
  • Page 53 < Waveform 24 R > < Waveform 24 FB > < Waveform 24 G > < Waveform 24 H-sync > < Waveform 24 B > < Waveform 24 V-sync >...

  • Page 54: No Remote Control Operation

    12. Remocon Remocon switch push but the key does not function Preliminary Checkpoints Check the Solder state and pin of Connector JP10 Check the Solder state in LED Board. Check the I2C between Micom and EEPROM. Check the Flash Memory or SDRAM. Remocon is O.K.
  • Page 55 < Waveform 25 >...

  • Page 56: No Key Control

    13. Key Key switch is OK but the key does not function Preliminary Checkpoints Check the Solder state and pin of Connector JP10 Check the Solder state in Key Board. Check the I2C between Micom and EEPROM. Check the Flash Memory or SDRAM. Control key is O.K.
  • Page 57 < Waveform 26 > < Waveform 26-1 >...

  • Page 58: Dtt Board Troubleshooting

    DTT Basic Inspection Not Working When Powered On Preliminary Checkpoints Check the condition of the input power &cable connection. (JP709) Check the condition of on-board regulators. Check for short circuits between each power terminal and the ground. Not Working When Powered On *JP 709 *JP 701 1.
  • Page 59 Basic Inspection Mulfunction or Not Working of Remote Control Unit Preliminary Checkpoints Check the battery condition of the Remote Control Unit. Check against the a set that works normally to see if the RCU (Remote Control Unit) is working. Check whether the connector between Digital Board and DTT&Analog Board is connected. (JP701) Note that DTT board does not receive the key directly from RCU.
  • Page 60 Basic Inspection Power Supply is O.K. but the DTT Does Not Wake Up Preliminary Checkpoints Check the System Clock (27MHz)and the RESET terminal of CPU. Check the UART communication terminals between CPU and digital board (UART0). Check the I2C between CPU and LGDT3303 or EEPROM. Check the Flash Memory or DDR-SDRAM.
  • Page 61 < Waveform 2 > < Waveform 5 > < Waveform 3 > < Waveform 4 >...
  • Page 62 Basic Inspection Does Not Boot after Power-On or System Reset Preliminary Checkpoints The system clock 27MHz must be stable during the System Reset or the Power On Reset. However, if X-TAL is defective, the clock may not become stable until RESET is released. To check reset timing, turn the main power off and back on, and check if the following waveform is maintained.
  • Page 63 < Waveform 2 > < Waveform 6 > < Waveform 4 > < Waveform 5 >...
  • Page 64 CPU / SYSTEM MEMORY INSPECTION CPU /System Memory Inspection Error Occurs During S/W Installation or Update through BOOTROM Board. System Stops During Initial Booting or Operation. Preliminary Checkpoints If the system does not respond even though no problem was found after basic inspection, you need to check the flash memory that contains program codes for the proper system operation, Flash Memory Control signals that look similar to below waveforms will be repeated.
  • Page 65 < Waveform 5 > < Waveform 7 >...
  • Page 66 MPEG INSPECTION MPEG Inspection No problems Found during Basic and CPU/System Memory Inspections, but MPEG Does Not Play. - Check DDR SDRAM Interface/Transport Stream(TS). Preliminary Checkpoints If the system does not respond even though no problems were found during the basic inspection and the CPU/Flash inspection, you will need to check the DDR-SDRAM interface.
  • Page 67 A/ V INSPECTION A/V Inspection No Video Output - CVBS/YPbPr Preliminary Checkpoints If no video is output while the UI(User Interface)and key controls are normal, first check the video output signal of CPU. If no video signal found,check the TS parallel data between CPU and U531. If no output of TS data,check the U531 and relevant components.
  • Page 68 A/V Inspection No Audio Output Preliminary Checkpoints If no audio is output through JP800 while the system is normal, first check the CPU AUDIO output and clock. [I2S interface ]. If no problems were found, check the U671 for Audio DAC. No Audio Output Waveform 10 Ch1:SCLK,...
  • Page 69 A/V Inspection No digital audio output Preliminary Checkpoints If the SPDIF output is not working while the system is normal (Including MPEG play and A/V output), check for any problems with the SPDIF output of CPU. No IEC958 Digital Output Waveform 13 Check the path between Check the IEC958 output...
  • Page 70 CHANNEL INSPECTION Channel Inspection No Channel Locking with No Problems with Power/CPU Preliminary Checkpoints If channel locking fails even though there is no problems with the system, check the Interface between Tuner, LGDT3303 and CPU. Channel locking failure - LDGT3303 Input Power * +3.3V Pin21, 35, 61, 93 After the basic inspection, check the...
  • Page 71 < Waveform 14 >...
  • Page 72 CHANNEL INSPECTION 2 Channel Inspection No Channel Locking with No Problems with Power/CPU Preliminary Checkpoints If channel Locking fails even though there is no problems with the system, check the TUNER 12C BUS and IF signals. If the Tuner 12C and IF signals are good but cannot search, check TS data goes to CPU Channel locking failure After the basic inspection, check the * +5VDT of PIN 3, 7...
  • Page 73 < Waveform 15 > < Waveform 16 >...

  • Page 74: Disassembly

    DISASSEMBLY Rear Case(42a3HD), Stand and Shield Assys Remove the 15 screws (T4 x 16). Remove the two screws (M4 x 12). Remove the 17 screws (M4 x 8). SHIELD ASSY and STAND ASSY Remove the nine screws (M3 x 8). Remove the four screws (M4 x 12).
  • Page 75 ANALOG, DIGITAL and EMI FILTER Remove the six screws (M3 x 8). Remove the eight screws (M4 x 8). Remove the connector (right → center → left). Remove the ANALOG DIGITAL EMI FILTER. SMPS Remove the Assy Brkt V-supporter L and R. Remove the four screws (M3 x 8) to release the ASSY BRKT MAIN.
  • Page 76 SHIELD SIDE Remove the SHIELD SIDE Remove the three screws (T4 x 16). Remove the screw (M4 x 10). Remove the three screws (M4 x 8). PDP PANEL...
  • Page 77 SPEAKERS Remove the two screws to release the LED PCB. Remove the eight screws (T4 x 14) to release the SPEAKER L/R. SPEAKER L SPEAKER R LED PCB...

  • Page 78: Troubleshooting (Pdp Panel)

    HOW TO DIAGNOSE THE PDP MODULE HOW TO DIAGNOSE THE PDP MODULE (PDP-NP42H5MF01PA/PB) 1. List of tools required for repair 2. Points of failure diagnosis for a Board Assy (PKG) 3. Replacement method of a Board Assy (PKG) and notes on replacement 4.

  • Page 79: Parts List (Boards & Versions)

    PARTS LIST NP42H5MF01PA/PB PART NAME SYMBOL PART NO NOTE TYPE NAME VERSION PKG42H5G1 9S899891 High Voltage Board PKG42H5C1 17C-08 9S890002 Digital Board PKG42H5J7 9S899895 Data Relay Board(Left Down) PKG42H5J8 9S899896 Data Relay Board(Right Down) PKG42H5J5 9S899893 Data Relay Board(Left Up) PKG42H5J6 9S899894 Data Relay Board(Right Up)
  • Page 80 Compatible table of the board version NP42H5MF01PA/PB Upper compatible if no terms. Name of (board) Version Replaceable Version Conditions Note High Voltage Board PKG42H5G1 Common Connection Board 01A/02A PKG42H5J4 Data Relay Board(Left Down) 01A/02A PKG42H5J7 Data Relay Board(Right Down) 01A/02A PKG42H5J8 Data Relay Board(Left Up) 01A/02A...

  • Page 81: Basic Troubleshooting Flow Chart

    Follow the procedure below for failure diagnosis. Keep wearing Antistatic wrist Band until all work and testing has finished. TROUBLE SHOOTING Procedure FOR BASIC Service TROUBLE SHOOTING From Service Model, Serial No. and Panel ID. Manual of the Page 82 (1) product Exchange PDP Panel Crack...

  • Page 82: Model & Serial Number Location

    (1) Model, Serial No., and Panel ID Refer to the photographs below to find Model, Serial No. and Panel ID. Model/Serial No. Panel ID MODEL NP42H5MF01 408200943 MADE IN JAPAN CODE AA-C3 NEC Plasma Display Corporation Above Example 222407145612 Model:NP42H5MF01AA Serial No.: 408200943 (2) Panel Crack Refer to the photographs below to check panel for crack.

  • Page 83: Connectors And Cables

    (3) Connectors/Cables (3-1) Check connectors and cables for breakage or disconnection referring to the photos below. Data Relay Flexible Cable (UP) Data Relay Flexible Cable (Down) (Caution) Take care for the cable handling. Careless handling inproduction line may cause this Failure. (3-2) Check connectors and cables whether they are connected and locked right.
  • Page 84 Right Connection (Part 1) High voltage Board( Photo) Scan Relay Board (Photo) Common Relay Board (Photo) - Digital Board - Panel - Panel Locked Unlocked Right Connection (Part 2) High Voltage Board (Photo) Digital Board (Photo) High Voltage Board (Photo) -Scan Relay Board(Photo) -High Voltage Board -Data Relay Board...
  • Page 85 Right Connection (Part 3) Common Connection Board (Photo) Data Relay Board (Photo) High Voltage Board (Photo) -Common Relay Board -Panel -Common Relay Board (Photo) Locked Unlocked...
  • Page 86 Right Connection (Part 3) Common Connection Board (Photo) Data Relay Board (Photo) High Voltage Board (Photo) -Common Relay Board -Panel -Common Relay Board (Photo) Locked Unlocked...

  • Page 87: Vertical Or Horizontal Lines

    Symptom : Vertical line Block (Note)Typical Symptom are only shown. Another Symptom might appear. Cause/Countermeasure: Cause/Countermeasure: 1 Open or contact failure of Data flexible Cable Open or contact failure of connector between Data Relay Board Clean, Reconnect or exchange connector. and Digital Board/High Voltage Board 2 Failure in Data IC Clean, Reconnect or exchange connector.

  • Page 88: No Picture

    (Note) Typical symptom are only shown. Picture Defect Another Symptom might appear. Symptom:No Picture(Priming flash). High Voltage Board Glass Fuse (F302) Cause/Countermeasure: 1F302 open ] Exchange High Voltage Board. OK: Short NG: Open...
  • Page 89 Cause/Countermeasure: 2 If the connector CN7709 disconnected from Data Relay Board (RU )is short-circuited between Pin 1 (or 2) and GND (Pin 3 or 4) ] Data IC is broken ]Exchange PDP. 3 If the connector CN7709 disconnected from Data Relay Board (RU) is short-circuited between Pin 5 (or 6) and GND (Pin 3 or 4) ] Data Relay Board (LU) or (RU) is failed ] a) If the connector CN7608 disconnected from Data Relay Board (LU) is short-circuited between Pin 1 and GND (Pin 2 or 6) ]Data Relay Board (LU) is failed...
  • Page 90 Symptom:No Picture. (Priming doesn’t flash if W-X erminals are short-circuited.) High Voltage Board; Reverse (112) (1~4) (109) Cause/Countermeasure: No Diode PH2401F (107) ]Exchange High Voltage (6~9) characteristic Board. (10~13) (99~103) Checkpoints (15~18) (93~96) (91) (24) High Voltage Board; Surface (86~89) (81~84) (33~35) (76~78)

  • Page 91: Abnormalities In The Picture

    Symptom:Abnormalities in a picture One or more vertical bands, Transparent vertical band Multiple vertical lines Out of synchronization or Mosaic duplication Rectangular color shear,color discrepancy, A number of lateral lines, shear in display Regular noise Cause/Countermeasure : 1 Contact failure of connector adjacent to Digital Board or short circuit due to conductive obstacle Clean or Reconnect 2 Failure in circuit on Digital Board...

  • Page 92: Power Off

    (Note) Typical Symptom are only shown. Another Symptom might appear. Power off Symptom: No Picture(Priming doesn’t flash) ] Power off Cause/Countermeasure: 1 F301 open ] Exchange High Voltage Board. 2 FU801 open ] Exchange Digital Board. High Voltage Board OK: Short NG: Open Glass Fuse (F301) Digital Board...
  • Page 93 Cause/Countermeasure : If short-circuited, disconnect connector between High Voltage Board and Scan Relay Board and, ]Exchange High Voltage Board. 4 Short between NEGA-POSI on High Voltage Board ]Exchange Scan Relay Board (U). 5 Short between NEGA-POSI on Scan Relay Board (U) ]Exchange Scan Relay Board (D).
  • Page 94 Symptom: No Picture ] Power off(Priming flash) Cause/Countermeasure: R91 open ] Exchange High Voltage Board. High Voltage Board Fuse Resistor (R91) R91 OK: About 2.2 Ω(1W) NG: Open...
  • Page 95 Symptom: Failure in Writing Symptom: White pattern even in no signal ] Power off ] Power off Dark and rough picture Many light spots on dark portion Cause/Countermeasure:R150 open ExchangeHigh Voltage Board. Cause/Countermeasure: R43,R61 open Exchange High Voltage Board. Fuse Resistor (R150) Fuse Resistor (R43),(R61) R43 OK: About 3.3 Ω(2W) NG: Open...

  • Page 96: Detaching Connectors & Boards

    METHOD OF DISASSEMBLY Follow the procedure below for diagnosis. Disassembly Right photo Prepare tools. Prepare product. Right photo Page 128 Disconnect connectors and cables on failed Board. Page 128 Detach failed Board. Page129-130 Put on good Board. Connect connectors and cables. Page129 (Caution) Put cushion under failed PDP to cover general surface of glass before laying it’s screen...
  • Page 97 Detach connectors and cables on failed Board. (Caution) Be careful of handling cables and connectors to avoid Failure. Be sure to take off Heat Sink before detach Data Relay Board. See Page 30 for the procedure. Data Relay Board (LU) Data Relay Board (RU) 8 connectors 9 connectors...
  • Page 98 Put on connectors and cables of good Board. (Caution) Be sure to put on Heat Sink after assembling Data Relay Board Data Relay Board (RU) Data Relay Board (LU) 8 connectors 9 connectors Common Relay Board 1 connector High Voltage Board 6 connectors Digital Board...
  • Page 99 (Caution) Stress on detaching easily breaks flex cable because Data TCP is How to detach Heat Sink sticking with Heat Sink (heat-conductive silicone sheet).(See Photo4) 1. Slowly swing Heat Sink back and forth.(1,2) 2. Gently lift Heat Sink up from Data TCP.(1,2) 3.

  • Page 100: Adjustments

    (1) Adjustments Follow the procedure below. 1-1)Conduct “(3)Adjustment of Vsw1 & Vsw2”and“(4)Adjustment of Vbw& Vp”, when High Voltage Board is replaced. 1-2) There is no need of adjustment if Board other than High Voltage Board. (2) Voltage Label Check Voltage Label Be sure to confirm voltages on Voltage label before conducting adjustment.
  • Page 101 (4) Adjustment of Vbw & Vp (Caution) Use the nearest chassis for grounding. Vp : Adjust VR1 so that the voltage betweenTest Pad (TP327) and GND becomes “Rated Voltage on Label ± 0.5V”. Vbw : Adjust VR2 so that the voltage betweenTest Pad (TP329) and GND becomes “Rated Voltage on Label ±...

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