PDP-42A3HD PDP-4214HD

Transcription

1 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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3 Contents Controls and Connections.....4~7 Front View..4 Rear View...5 Remote Control ~7 Basic Block Diagrams. 8~15 Overall Block Diagram... 8 ATSC Tuner Tuner Block....9 Digital Block ~11 DTT and Analog Block ~13 Display Block Description & Factory Mode. 14~15 Signal Flow Block Diagrams 16~28 Analog Tuner Input Main Flow.. 16 Analog Tuner Input Sub Block..17 Composite Input Main 18 Composite Input Sub..19 S Input Main. 20 S Input Sub..21 ATSC (HD Signal) Main.22 ATSC (HD Signal) Sub..23 Component Input Main..24 Component Input Sub 25 HDMI Input Main.26 HDMI Input Sub..27 Caption Input..28 Input and Tuner Board Locations 29 White Balance Adjustment Power Down Tip...31 Troubleshooting (Tuner Module)...32~73 No Power 32~33 No HDMI ~35 No Component Signal....36~37 No TV Signal ~39 No Video or No S Video Signal..40~43 No Audio. 44~50 No Caption. 52~53 No Remote Control Operation 54~55 No Key Control..56~57 DTT Board Troubleshooting 58~73 Disassembly... 74~77 Troubleshooting (PDP Panel)..78~99 Required Tools..78 Parts List (Boards & Versions) 79 Basic Troubleshooting Flow Chart..81 Model & Serial Number Location. 82 Panel Crack Identification.82 Connectors and Cables...83~86 Vertical or Horizontal Lines.. 87 No Picture...88~90 Abnormalities in the Picture. 91 Power Off 92~95 Detaching Connectors & Boards 96~99 Adjustments. 100~101.

4 STANDBY DT V TV VCR DV D HDM I POWE R STANDB Y /ON Plasma Display Front view STANDBY DTV TV VC R D VD HDMI PO WE R STANDBY /ON POWER button 2 STANDB Y indicator 3 Current input source indicators 4 Remote control sensor 5INPUT button 6 button 7 MENU button 8 VOLUME /+ buttons 9 CHANNEL /+ button s 10 STANDB Y/ON button 4

5 Rear view INPUT VIDEO 3 L R AUDIO S-VIDEO L VIDEO 2 L-AUDIO-R S-VIDEO 2 L-AUDIO-R Y CB/PB CR/PR COMPONENT 2 L DTV- ANTENNA IN VIDEO AUDIO ANTENNA / CABLE IN MONITOR OUT R OPTICAL DIGITAL OUT VIDEO 1 L-AUDIO-R S-VIDEO 1 L-AUDIO-R Y INPUT CB/PB CR/PR COMPONENT 1 HDMI HDMI R AUDIO SERVICE ONLY AC IN The terminals have faced downward. 1 VIDEO 3 terminals (AUDIO/VIDEO/S-VIDEO) 2 DTV-ANTENNA IN terminal 3 ANTENNA/CABLE IN terminal 4 MONITOR OUT terminals (AUDIO/VIDEO) 5 DIGITAL OUT terminal (OPTICAL) 6 VIDEO 1/VIDEO 2 terminals (AUDIO/VIDEO/ S-VIDEO) 7 COMPONENT 1/COMPONENT 2 terminals (COMPONENT VIDEO/AUDIO) 8 HDMI terminal (AUDIO/HDMI) 9 RS-232C terminal (service only) 10 AC IN terminal 5

6 Remote control unit AV SELECTION SOUND EFFECT FAVORITE CH CH RETURN INPUT CH C.C. EXIT HD WIDE SPLIT SPLIT P IN P SWAP INPUT SPLIT MUTI SLEEP BACK SHIFT SPLIT CH+ CH DTV SIGNAL MTS LIST SCREEN SIZE VOL TV CH ENTER DISPLAY MENU CH DELETE HD WIDE : Adjusts the picture to fit the 16:9 wide aspect ratio. Available in DTV mode. 2 INP UT : Displays all available input sources. Press the or button to select the required input source. \ \ 3 AV SELECTION : Selects the picture mode (Standard, Dynamic, Movie, Game or User). 4 SOUND EFFECT : Selects the sound effect (Flat, Speech, Movie, Music or User) : Select the channel. 6 (dot): Selects the sub-channel of DTV. 7 C.C.: Display captions while in the closedcaption source. 8 FAVORITE CH : Selects the favorite channel. 9 / / /\: Controls the cursor in the onscreen menu. 10 CH RETURN : Returns the selected channels. 11 EXIT : Exits from any display. 12 CH +/ : Changes the channel. 13 MUTI: Mutes the sound. To turn the sound back on, press the MUTI, VOL+ or VOL buttons. 14 TV : Switches between operation and standby mode. 15 SCREEN SIZE: Changes the aspect ratio of the screen (Zoom/Cinema/Full/4:3/Wide). 16 CH ENTER: Enters channels. 17 SLEEP: Sets the sleep timer. 18 DISPL AY: Shows the display. 19 : Executes a command. 20 MENU : Displays the on-screen menu. 21 BACK: Returns to the previous menu screen. 22 VOL +/ :Sets the volume. \ 6

7 SPLIT SPLIT P IN P SWA P CH MUTI VO L INPUT SHIFT SPLIT SPLIT Slid e CH + CH DT V SIGNAL MT S LIST FAVORITE CH DELETE 23 SPLIT SPLIT P IN P SWA P INPUT SHIFT SPLIT SPLIT CH+ CH DTV SIGNAL MTS LIST CH DELETE SPLIT Function Buttons SPLIT : Selects the SPLIT mode (Off, PIP, Twin1 or Twin2). SPLIT INPUT : Selects an input source for the sub picture. P IN P/SHIFT : Selectsa position for the subpicture. SWAP : Interchanges the main picture and sub-picture. SPLIT CH +, SPLIT CH : Changes the channel of the sub-picture. 24 DTV SIGNAL : Displays the signal strength and quality. 25 MTS : Selects the sound mode. 26 CH DELETE: Deletes a channel in Edit Channel List. 27 LIST : Displays the channel list. Press the or button to select the required channel. When using the remote control unit, point it at the Plasma Display. 7

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9 +3.3V EEPROM Flash +2.5V +1.2V +5.0V. DC-DC Converter +3.3V +A6VCC 16KB 4MByte +2.5V +2.5V +1.2V Linear Reg. ATSC Jack Ant Digital Tuner Channel Decoder DDR SDRM CPU MDIN 150 (TL955B2-SH) UART0 (Communication) UART1 (RS232C) UART2 (RS232C) For Debug Communication To Disp lay Board NTSC Analog Tuner 32MByte 3 ATSC YPbPr Out (720P/108 0i) CVBS NTSC SIF_A DDR SDRM 32MByte ATSC CVBS Out IIS (ATSC) Audio DAC L/R ATSC ATSC S/PDIF Digital- SW S/PDIF Out 9

10 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) A G B H C I D 10

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. The Flash Rom block stores operation source. 5. ATSC input block is composed of Digital tuner(dtt7608) and channel Decorder(LGDT3303). 6. NTSC input block is composed of Analog Tuner and connects in Video decorder(upd64012). 7. DDR SDRAM block is composed of 4 32MByte and stores the current Video and information instantly. 8. The CPU block functions MPEG decoder, converts the video format and controls the related IC's. 9. The Audio DAC converts from IIC Audio to L/R Analog Audio. 10. The SPDIF outputs 5.1Ch Dolby Digital audio signal. 11

12 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) D A B E J C F G 12

13 3. Digital PCB Block A : Indication LED Block B : Audio AMP Block(TA2024B) C : AV input Block D : Control key Block A B C D 13

14 Block Description of Display 1. The ADC & HDMI receiver used on this board (MST ). 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. The CXA2069 switches input signal and selects the signal. Analog Only (Tuner,YC and composite). 4. The MDIN150 is de-interlacer, it functions that interlaced signal converts de-interlaced signal and improves picture quality. (I/P Converter) 5. The ASI510 is scaler IC, scaling video signal it interfaces with related IC and outputs 24 bit RGB format video. 6. The SDA6001 is composed of micom and closed caption block, it controls related IC, power on/off system, and signal flowing system. 7. IO expander functions that it increases the IO port from receiving IIC communication signal. 8. The real timer(m41t81) is timer with using the clock generator. Factory Mode 1. To enter the test mode press keys on remote control in sequence as below. TV/AV You can make adjustments, but proper settings are very critical for set operations. 2. Self-check mode and error code is not applicable in this set. 14

15 Display BLOCK HDMI ATSC YPbPr 1 YPbPr 2 NTSC_CVBS ATSC_CVBS CVBS 1 CVBS 2 CVBS 3 Y/C 1 Y/C 2 Y/C 3 CVBS & Audio LINE_OUT BA CXA2069 (A_S/W) 9886 MST ~ 480P CVBS1 Y1/C1 MICOM_CVBS CVBS2/Y2 C2 Audio L-Main Audio R-Main RGB HDMI I2S & S/PDIF upd (Video Decode, C/C & 3D) L/R SC2 L/R CVBS1 L/R CVBS2 L/R CVBS3 L/R DVI LPF To MSP RGB/FB For CC MDIN 150 (I/P) VPC3230 (Decode) 5Vst Real IIC Timer (M41T81) RS232C Bat. 8 Bit MUX MAX C 24 8 Bit MUX 16 MICOM_CVBS RGB/FB Rx/Tx Rx/Tx D-H/V Sync & clk A-INE[23:0] A-H/V Sync & clk 4 MDIN 150 D-INO[23:0] ASI510 (Scaler) V-H/V Sync & clk V-IN [15:0] SDA6000M Tele-text C/C IIC LED Key I/R 30 HDMI I2S ATSC I2S SIF _A L/R Main (CXA2069) L/R ATSC L/R DTV1 L/R DTV2 I/O Expender (~DE) LVDS J- J- Tx DS90C387 L003 (~SOG) From MSP4440 Output Audio (2069, P MSP44X0, 4052) Audio MSP44X0 MAX232 Amp L/R SC2 (CXA2069) L/R Aux. (Headphone) L/R Main (Power Amp). M7V. A6VCC. A12VCC. 12VCC. 2V5VCC Speaker 15. 3V3VCC

16 ATV Input(Main) HDMI MST3388 RGB D-H/V Sync & clk A-INE[23:0] 30 (~DE) LVDS J- J- Tx DS90C387 L003 (~SOG) Panel ATSC YPbPr 1 YPbPr 2 NTSC_CVBS ATSC_CVBS CVBS 1 CVBS 2 CVBS 3 BA CXA2069 (A_S/W) -110 ~ 480P CVBS1 Y1/C1 MICOM_CVBS CVBS2/Y2 C2 Audio L-Main Audio R-Main HDMI I2S & S/PDIF upd (Video Decode, C/C & 3D) LPF To MSP RGB/FB For CC MDIN 150 (I/P) VPC3230 (Decoder) 8 Bit MUX 24 8 Bit MUX 16 MICOM_CVBS RGB/FB 4 A-H/V Sync & clk MDIN 150 D-INO[23:0] ASI510 (Scaler) V-H/V Sync & clk V-IN [15:0] SDA6001 IIC LED HDMI I2S ATSC I2S SIF _A L/R Main (CXA2069) L/R ATSC L/R DTV1 L/R DTV2 From MSP4440 Output Audio (2069, MSP44X0, 4052) Audio MSP44X0 MAX232 Amp L/R SC2 (CXA2069) L/R Aux. (Headphone) L/R Main (Power Amp) Speaker Y/C 1 Y/C 2 Y/C 3 CVBS & Audio LINE_OUT L/R SC2 L/R CVBS1 L/R CVBS2 L/R CVBS3 L/R DVI 5Vst Real IIC Timer (M41T81) RS232C Bat. MAX C Rx/Tx Rx/Tx Tele-text C/C Key I/R I/O Expender. M7V. A6VCC. A12VCC. 12VCC. 2V5VCC 16. 3V3VCC

17 ATV Input(Sub) HDMI ATSC YPbPr 1 YPbPr 2 NTSC_CVBS ATSC_CVBS CVBS 1 CVBS 2 CVBS 3 BA CXA2069 (A_S/W) MST ~ 480P CVBS1 Y1/C1 MICOM_CVBS CVBS2/Y2 C2 Audio L-Main Audio R-Main RGB HDMI I2S & S/PDIF upd (Video Decode, C/C & 3D) LPF To MSP RGB/FB For CC MDIN 150 (I/P) VPC3230 (Decoder) 8 Bit MUX 24 8 Bit MUX 16 MICOM_CVBS RGB/FB D-H/V Sync & clk A-INE[23:0] A-H/V Sync & clk MDIN 150 D-INO[23:0] ASI510 (Scaler) V-H/V Sync & clk V-IN [15:0] SDA6000M IIC 4 LED 30 HDMI I2S ATSC I2S SIF _A L/R Main (CXA2069) L/R ATSC L/R DTV1 L/R DTV2 From MSP4440 Output (~DE) LVDS J- J- Tx DS90C387 L003 (~SOG) Audio (2069, MSP44X0, 4052) Audio MSP44X0 MAX232 Amp Panel L/R SC2 (CXA2069) L/R Aux. (Headphone) L/R Main (Power Amp) Speaker Y/C 1 Y/C 2 Y/C 3 CVBS & Audio LINE_OUT L/R SC2 L/R CVBS1 L/R CVBS2 L/R CVBS3 L/R DVI 5Vst Real IIC Timer (M41T81) RS232C Bat. MAX C Rx/Tx Rx/Tx Tele-text C/C Key I/R I/O Expender. M7V. A6VCC. A12VCC. 12VCC. 2V5VCC 17. 3V3VCC

18 CVBS Input(Main) HDMI ATSC YPbPr 1 YPbPr 2 NTSC_CVBS ATSC_CVBS CVBS 1 CVBS 2 CVBS 3 BA CXA2069 (A_S/W) MST ~ 480P CVBS1 Y1/C1 MICOM_CVBS CVBS2/Y2 C2 Audio L-Main Audio R-Main RGB HDMI I2S & S/PDIF upd (Video Decode, C/C & 3D) LPF To MSP RGB/FB For CC MDIN 150 (I/P) VPC3230 (Decoder) 8 Bit MUX 24 8 Bit MUX 16 MICOM_CVBS RGB/FB D-H/V Sync & clk A-INE[23:0] A-H/V Sync & clk 4 MDIN 150 D-INO[23:0] ASI510 (Scaler) V-H/V Sync & clk V-IN [15:0] SDA6000M IIC LED 30 HDMI I2S ATSC I2S SIF _A L/R Main (CXA2069) L/R ATSC L/R DTV1 L/R DTV2 From MSP4440 Output (~DE) LVDS J- J- Tx DS90C387 L003 (~SOG) Audio (2069, MSP44X0, 4052) Audio MSP44X0 MAX232 Amp Panel L/R SC2 (CXA2069) L/R Aux. (Headphone) L/R Main (Power Amp) Speaker Y/C 1 Y/C 2 Y/C 3 CVBS & Audio LINE_OUT L/R SC2 L/R CVBS1 L/R CVBS2 L/R CVBS3 L/R DVI 5Vst Real IIC Timer (M41T81) RS232C Bat. MAX C Rx/Tx Rx/Tx Tele-text C/C Key I/R I/O Expender. M7V. A6VCC. A12VCC. 12VCC. 2V5VCC 18. 3V3VCC

19 CVBS Input(Sub) HDMI ATSC YPbPr 1 YPbPr 2 NTSC_CVBS ATSC_CVBS CVBS 1 CVBS 2 CVBS 3 BA CXA2069 (A_S/W) MST ~ 480P CVBS1 Y1/C1 MICOM_CVBS CVBS2/Y2 C2 Audio L-Main Audio R-Main RGB HDMI I2S & S/PDIF upd (Video Decode, C/C & 3D) LPF To MSP RGB/FB For CC MDIN 150 (I/P) VPC3230 (Decoder) 8 Bit MUX 24 8 Bit MUX 16 MICOM_CVBS RGB/FB D-H/V Sync & clk A-INE[23:0] A-H/V Sync & clk 4 MDIN 150 D-INO[23:0] ASI510 (Scaler) V-H/V Sync & clk V-IN [15:0] SDA6000M IIC LED 30 HDMI I2S ATSC I2S SIF _A L/R Main (CXA2069) L/R ATSC L/R DTV1 L/R DTV2 From MSP4440 Output (~DE) LVDS J- J- Tx DS90C387 L003 (~SOG) Audio (2069, MSP44X0, 4052) Audio MSP44X0 MAX232 Amp Panel L/R SC2 (CXA2069) L/R Aux. (Headphone) L/R Main (Power Amp) Speaker Y/C 1 Y/C 2 Y/C 3 CVBS & Audio LINE_OUT L/R SC2 L/R CVBS1 L/R CVBS2 L/R CVBS3 L/R DVI 5Vst Real IIC Timer (M41T81) RS232C Bat. MAX C Rx/Tx Rx/Tx Tele-text C/C Key I/R I/O Expender. M7V. A6VCC. A12VCC. 12VCC. 2V5VCC 19. 3V3VCC

20 HDMI ATSC YPbPr 1 YPbPr 2 NTSC_CVBS ATSC_CVBS CVBS 1 CVBS 2 CVBS 3 BA CXA2069 (A_S/W) MST ~ 480P CVBS1 Y1/C1 MICOM_CVBS CVBS2/Y2 C2 Audio L-Main Audio R-Main S Input(Main) RGB HDMI I2S & S/PDIF upd (Video Decode, C/C & 3D) LPF To MSP RGB/FB For CC MDIN 150 (I/P) VPC3230 (Decoder) 8 Bit MUX 24 8 Bit MUX 16 MICOM_CVBS RGB/FB D-H/V Sync & clk A-INE[23:0] A-H/V Sync & clk 4 MDIN 150 D-INO[23:0] ASI510 (Scaler) V-H/V Sync & clk V-IN [15:0] SDA6000M IIC LED 30 SIF _A L/R Main (CXA2069) L/R ATSC L/R DTV1 L/R DTV2 (~DE) LVDS J- J- Tx DS90C387 L003 (~SOG) HDMI I2S ATSC I2S From MSP4440 Output Audio (2069, MSP44X0, 4052) Audio MSP44X0 MAX232 Amp Panel L/R SC2 (CXA2069) L/R Aux. (Headphone) L/R Main (Power Amp) Speaker Y/C 1 Y/C 2 Y/C 3 CVBS & Audio LINE_OUT L/R SC2 L/R CVBS1 L/R CVBS2 L/R CVBS3 L/R DVI 5Vst Real IIC Timer (M41T81) RS232C Bat. MAX C Rx/Tx Rx/Tx Tele-text C/C Key I/R I/O Expender. M7V. A6VCC. A12VCC. 12VCC. 2V5VCC 20. 3V3VCC

21 S Input(Sub) HDMI ATSC YPbPr 1 YPbPr 2 NTSC_CVBS ATSC_CVBS CVBS 1 CVBS 2 CVBS 3 BA CXA2069 (A_S/W) MST ~ 480P CVBS1 Y1/C1 MICOM_CVBS CVBS2/Y2 C2 Audio L-Main Audio R-Main RGB HDMI I2S & S/PDIF upd (Video Decode, C/C & 3D) LPF To MSP RGB/FB For CC MDIN 150 (I/P) VPC3230 (Decoder) 8 Bit MUX 24 8 Bit MUX 16 MICOM_CVBS RGB/FB D-H/V Sync & clk A-INE[23:0] A-H/V Sync & clk 4 MDIN 150 D-INO[23:0] ASI510 (Scaler) V-H/V Sync & clk V-IN [15:0] SDA6000M IIC LED 30 HDMI I2S ATSC I2S SIF _A L/R Main (CXA2069) L/R ATSC L/R DTV1 L/R DTV2 From MSP4440 Output (~DE) LVDS J- J- Tx DS90C387 L003 (~SOG) Audio (2069, MSP44X0, 4052) Audio MSP44X0 MAX232 Amp Panel L/R SC2 (CXA2069) L/R Aux. (Headphone) L/R Main (Power Amp) Speaker Y/C 1 Y/C 2 Y/C 3 CVBS & Audio LINE_OUT L/R SC2 L/R CVBS1 L/R CVBS2 L/R CVBS3 L/R DVI 5Vst Real IIC Timer (M41T81) RS232C Bat. MAX C Rx/Tx Rx/Tx Tele-text C/C Key I/R I/O Expender. M7V. A6VCC. A12VCC. 12VCC. 2V5VCC 21. 3V3VCC

22 ATSC Input(Main) HDMI ATSC YPbPr 1 YPbPr 2 NTSC_CVBS ATSC_CVBS CVBS 1 CVBS 2 CVBS 3 Y/C 1 Y/C 2 Y/C 3 CVBS & Audio LINE_OUT BA CXA2069 (A_S/W) MST ~ 480P CVBS1 Y1/C1 MICOM_CVBS CVBS2/Y2 C2 Audio L-Main Audio R-Main RGB HDMI I2S & S/PDIF upd (Video Decode, C/C & 3D) L/R SC2 L/R CVBS1 L/R CVBS2 L/R CVBS3 L/R DVI LPF To MSP RGB/FB For CC MDIN 150 (I/P) VPC3230 (Decoder) 5Vst Real IIC Timer (M41T81) RS232C Bat. 8 Bit MUX MAX C 24 8 Bit MUX 16 MICOM_CVBS RGB/FB Rx/Tx Rx/Tx D-H/V Sync & clk A-INE[23:0] A-H/V Sync & 4clk MDIN 150 D-INO[23:0] ASI510 (Scaler) V-H/V Sync & clk V-IN [15:0] SDA6000M Tele-text C/C IIC LED Key I/R 30 SIF _A L/R Main (CXA2069) L/R ATSC L/R DTV1 (~DE) HDMI I2S L/R DTV2 I/O Expender LVDS J- J- Tx DS90C387 L003 (~SOG) ATSC I2S From MSP4440 Output Audio (2069, MSP44X0, 4052) Audio MSP44X0 Amp TA2024B Panel L/R SC2 (CXA2069) L/R Aux. (Headphone) L/R Main (Power Amp). M7V Speaker. A6VCC. A12VCC. 12VCC. 2V5VCC. 3V3VCC

23 ATSC Input(Sub) HDMI ATSC YPbPr 1 YPbPr 2 NTSC_CVBS ATSC_CVBS CVBS 1 CVBS 2 CVBS 3 BA CXA2069 (A_S/W) MST ~ 480P CVBS1 Y1/C1 MICOM_CVBS CVBS2/Y2 C2 Audio L-Main Audio R-Main RGB HDMI I2S & S/PDIF upd (Video Decode, C/C & 3D) LPF To MSP RGB/FB For CC MDIN 150 (I/P) VPC3230 (Decoder) 8 Bit MUX 24 8 Bit MUX 16 MICOM_CVBS RGB/FB D-H/V Sync & clk A-INE[23:0] A-H/V Sync & 4clk MDIN 150 D-INO[23:0] ASI510 (Scaler) V-H/V Sync & clk V-IN [15:0] SDA6000M IIC LED 30 SIF _A L/R Main (CXA2069) L/R ATSC L/R DTV1 L/R DTV2 (~DE) LVDS J- J- Tx DS90C387 L003 (~SOG) HDMI I2S ATSC I2S From MSP4440 Output Audio (2069, MSP44X0, 4052) Audio MSP44X0 MAX232 Amp Panel L/R SC2 (CXA2069) L/R Aux. (Headphone) L/R Main (Power Amp) Speaker Y/C 1 Y/C 2 Y/C 3 CVBS & Audio LINE_OUT L/R SC2 L/R CVBS1 L/R CVBS2 L/R CVBS3 L/R DVI 5Vst Real IIC Timer (M41T81) RS232C Bat. MAX C Rx/Tx Rx/Tx Tele-text C/C Key I/R I/O Expender. M7V. A6VCC. A12VCC. 12VCC. 2V5VCC 23. 3V3VCC

24 HDMI ATSC YPbPr 1 YPbPr 2 NTSC_CVBS ATSC_CVBS CVBS 1 CVBS 2 CVBS 3 Y/C 1 Y/C 2 Y/C 3 CVBS & Audio LINE_OUT BA CXA2069 (A_S/W) Component Input(Main) MST ~ 480P CVBS1 Y1/C1 MICOM_CVBS CVBS2/Y2 C2 Audio L-Main Audio R-Main RGB HDMI I2S & S/PDIF upd (Video Decode, C/C & 3D) L/R SC2 L/R CVBS1 L/R CVBS2 L/R CVBS3 L/R DVI LPF To MSP RGB/FB For CC MDIN 150 (I/P) VPC3230 (Decoder) 5Vst Real IIC Timer (M41T81) RS232C Bat. 8 Bit MUX MAX C 24 8 Bit MUX 16 MICOM_CVBS RGB/FB Rx/Tx Rx/Tx D-H/V Sync & clk A-INE[23:0] A-H/V 4 Sync & clk MDIN 150 D-INO[23:0] ASI510 (Scaler) V-H/V Sync & clk V-IN [15:0] SDA6000M Tele-text C/C IIC LED Key I/R (~DE) 30 (~SOG) HDMI I2S ATSC I2S SIF _A L/R Main (CXA2069) L/R ATSC L/R DTV1 L/R DTV2 From MSP4440 Output I/O Expender LVDS J- J- Tx DS90C387 L003 Audio (2069, MSP44X0, 4052) Audio MSP44X0 MAX232 Amp Panel L/R SC2 (CXA2069) L/R Aux. (Headphone) L/R Main (Power Amp) Speaker. M7V. A6VCC. A12VCC. 12VCC. 2V5VCC. 3V3VCC

25 Component Input(Sub) HDMI ATSC YPbPr 1 YPbPr 2 NTSC_CVBS ATSC_CVBS CVBS 1 CVBS 2 CVBS 3 BA CXA2069 (A_S/W) MST ~ 480P CVBS1 Y1/C1 MICOM_CVBS CVBS2/Y2 C2 Audio L-Main Audio R-Main RGB HDMI I2S & S/PDIF upd (Video Decode, C/C & 3D) LPF To MSP RGB/FB For CC MDIN 150 (I/P) VPC3230 (Decoder) 8 Bit MUX 24 8 Bit MUX 16 MICOM_CVBS RGB/FB D-H/V Sync & clk A-INE[23:0] A-H/V 4 Sync & clk MDIN 150 D-INO[23:0] ASI510 (Scaler) V-H/V Sync & clk V-IN [15:0] SDA6000M IIC LED (~DE) 30 (~SOG) HDMI I2S ATSC I2S SIF _A L/R Main (CXA2069) L/R ATSC L/R DTV1 L/R DTV2 From MSP4440 Output LVDS J- J- Tx DS90C387 L003 Audio (2069, MSP44X0, 4052) Audio MSP44X0 MAX232 Amp Panel L/R SC2 (CXA2069) L/R Aux. (Headphone) L/R Main (Power Amp) Speaker Y/C 1 Y/C 2 Y/C 3 CVBS & Audio LINE_OUT L/R SC2 L/R CVBS1 L/R CVBS2 L/R CVBS3 L/R DVI 5Vst Real IIC Timer (M41T81) RS232C Bat. MAX C Rx/Tx Rx/Tx Tele-text C/C Key I/R I/O Expender. M7V. A6VCC. A12VCC. 12VCC. 2V5VCC 25. 3V3VCC

26 HDMI Input(Main) HDMI ATSC YPbPr 1 YPbPr 2 NTSC_CVBS ATSC_CVBS CVBS 1 CVBS 2 CVBS 3 BA CXA2069 (A_S/W) MST ~ 480P CVBS1 Y1/C1 MICOM_CVBS CVBS2/Y2 C2 Audio L-Main Audio R-Main RGB HDMI I2S & S/PDIF upd (Video Decode, C/C & 3D) LPF To MSP RGB/FB For CC MDIN 150 (I/P) VPC3230 (Decoder) 8 Bit MUX 24 8 Bit MUX 16 MICOM_CVBS RGB/FB D-H/V Sync & clk A-INE[23:0] A-H/V Sync & 4clk MDIN 150 D-INO[23:0] ASI510 (Scaler) V-H/V Sync & clk V-IN [15:0] SDA6000M IIC LED 30 SIF _A L/R Main (CXA2069) L/R ATSC L/R DTV1 L/R DTV2 (~DE) LVDS J- J- Tx DS90C387 L003 (~SOG) HDMI I2S ATSC I2S From MSP4440 Output Audio (2069, MSP44X0, 4052) Audio MSP44X0 MAX232 Amp Panel L/R SC2 (CXA2069) L/R Aux. (Headphone) L/R Main (Power Amp) Speaker Y/C 1 Y/C 2 Y/C 3 CVBS & Audio LINE_OUT L/R SC2 L/R CVBS1 L/R CVBS2 L/R CVBS3 L/R DVI 5Vst Real IIC Timer (M41T81) RS232C 26 Bat. MAX C Rx/Tx Rx/Tx Tele-text C/C Key I/R I/O Expender. M7V. A6VCC. A12VCC. 12VCC. 2V5VCC. 3V3VCC

27 HDMI Input(Sub) HDMI ATSC YPbPr 1 YPbPr 2 NTSC_CVBS ATSC_CVBS CVBS 1 CVBS 2 CVBS 3 BA CXA2069 (A_S/W) MST ~ 480P CVBS1 Y1/C1 MICOM_CVBS CVBS2/Y2 C2 Audio L-Main Audio R-Main RGB HDMI I2S & S/PDIF upd (Video Decode, C/C & 3D) LPF To MSP RGB/FB For CC MDIN 150 (I/P) VPC3230 (Decoder) 8 Bit MUX 24 8 Bit MUX 16 MICOM_CVBS RGB/FB D-H/V Sync & clk A-INE[23:0] A-H/V Sync & clk 4 MDIN 150 D-INO[23:0] ASI510 (Scaler) V-H/V Sync & clk V-IN [15:0] SDA6000M IIC LED 30 HDMI I2S ATSC I2S SIF _A L/R Main (CXA2069) L/R ATSC L/R DTV1 L/R DTV2 From MSP4440 Output (~DE) LVDS J- J- Tx DS90C387 L003 (~SOG) Audio (2069, MSP44X0, 4052) Audio MSP44X0 MAX232 Amp Panel L/R SC2 (CXA2069) L/R Aux. (Headphone) L/R Main (Power Amp) Speaker Y/C 1 Y/C 2 Y/C 3 CVBS & Audio LINE_OUT L/R SC2 L/R CVBS1 L/R CVBS2 L/R CVBS3 L/R DVI 5Vst Real IIC Timer (M41T81) RS232C 27 Bat. MAX C Rx/Tx Rx/Tx Tele-text C/C Key I/R I/O Expender. M7V. A6VCC. A12VCC. 12VCC. 2V5VCC. 3V3VCC

28 Caption Input HDMI ATSC YPbPr 1 YPbPr 2 NTSC_CVBS ATSC_CVBS CVBS 1 CVBS 2 CVBS 3 BA CXA2069 (A_S/W) MST ~ 480P CVBS1 Y1/C1 CVBS2/Y2 C2 Audio L-Main Audio R-Main RGB MICOM_CVBS HDMI I2S & S/PDIF upd (Video Decode, C/C & 3D) LPF To MSP RGB/FB For CC MDIN 150 (I/P) VPC3230 (Decoder) 8 Bit MUX 24 8 Bit MUX 16 MICOM_CVBS RGB/FB D-H/V Sync & clk A-INE[23:0] A-H/V Sync 4 & clk MDIN 150 D-INO[23:0] ASI510 (Scaler) V-H/V Sync & clk V-IN [15:0] SDA6000M IIC LED 30 LVDS J- J- Tx DS90C387 L003 (~SOG) SIF _A (~DE) HDMI I2S ATSC I2S L/R Main (CXA2069) L/R ATSC L/R DTV1 L/R DTV2 From MSP4440 Output Audio (2069, MSP44X0, 4052) Audio MSP44X0 MAX232 Amp Panel L/R SC2 (CXA2069) L/R Aux. (Headphone) L/R Main (Power Amp) Speaker Y/C 1 Y/C 2 Y/C 3 CVBS & Audio LINE_OUT L/R SC2 L/R CVBS1 L/R CVBS2 L/R CVBS3 L/R DVI 5Vst Real IIC Timer (M41T81) RS232C Bat. MAX C Rx/Tx Rx/Tx Tele-text C/C Key I/R I/O Expender. M7V. A6VCC. A12VCC. 12VCC. 2V5VCC 28. 3V3VCC

29 Tuner / Digital / Input & SMPS Power Modules To "2.5 Rear Section To "2.2 Exterior Section(1) Description Part No. 1 SMPS Assy DTT_ANALOG Assy DIGITAL Assy EMI FILTER PCB Assy BRKT FAN-TOP FAN D05X12TL(50x50x10) Screw M3x14, SEMS,ZNW M ASSY SHIELD MAIN Screw M3x8, SEMS,ZNW M BRKT N-FILTER Screw M3x8, SEM(E),ZNW M BRKT REAR BOTTOM Screw T4x16,SS,T/T,BH,BLK M BRKT MAIN AV-USA Screw T3x8,2S,T/T,BH,BLK M Screw M3x8,3S,HH,FNI M Screw M4x8,BH,BLK M Wsher (Ø10) M NUT UNF 3/8INCH832 M ASSY SHIELD MAIN TOP M ASSY BRKT MAIN SUPPORTER

30 ADJUSTMENT 1. 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. 2. Any value changed in Service/Factory mode will be stored in memory as soon as it is changed. Before readjustment, take note of the original values for reference in case you need to restore the original settings. 3. Use a stable AC power supply. ADJUSTMENT OF WHITE BALANCE Adjustment of White Balance 1. Equipment MIK7255 or Pattern Generator CA-210 Display Color Analyzer Remote Control. 2. Pattern adjustment ADC Calibration : Mik pattern #240 Auto-Calibration Mode ; 480p/60Hz ; 720p/60Hz ; 480i/60Hz White Balance adjustment pattern: Mik pattern #446 Color coordinate adjustment Mode: 720p/60Hz(Component) Composite NTSC 3. STEP1: ADC-Calibration 1) At 480p, do Auto-Calibration of ADC-cut off & Gain(1 ) on Mosaic pattern(ex Mik pattern #240) 2) At 720p/60Hz, repeat 1) 3) At 480i, repeat 1). 4. STEP2: Adjustment of White - Balance 1) At Component input p/60Hz, adjust white Balance Mid, High,Low at pattern Full white 70% (Ex; Mik pattern #446) 2) At Composite NTSC, repeat 1) 3) White Balance coordination (enter White Balance in Factory Mode) How to enter; TV/AV -> 0 -> 9 -> 1-> 7 (press buttons one at a time to enter factory mode) -> ASI510 W/B -> Done (it shows R,G,B adjustment toolbar) (1) Mid : x=0.283, y= / (9300k) (2) High : x=0.276, y= / (11000k) (3) Low : x=0.313, y= / (6500k) 30

31 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). Try to power the set on in this condition. If the power stays on you will need to troubleshoot the Panel assembly PCB s. If the power still shuts down you need to troubleshoot the Display, DTT, SMPS Audio or Thermal sensor assemblies. 31

32 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 In Digital B/D Check SMPS Waveform 1 #3(Power) at JP730 In digital Board Check SMPS &Micom Block(U29) Waveform 2 #5(POMUTE) at JP730 In digital Board Check SMPS &Power Line in Digital B/D Waveform 3 #74,75 at U29 in digital B/D The signal waveform of X3 in digital B/D Waveform 4,4-1 Waveform 5 Check the state of soldering in U401,U800,U29 Check the input power part in U29 The data line waveform of U28 Waveform 6,6-1 Check the U28 and related Circuit Change Digital B/D 32

33 <Waveform 1 > <Waveform 4-1 > <Waveform 2 > <Waveform 5 > <Waveform 3 > <Waveform 6-1 > 33

34 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 at U401 in digital B/D Check the state of soldering at U401,U800,U29 Waveform 7 #108,109,111,112, 114,115,117,118 DC level At U401 In digital Board Check input signal part of U401 Waveform 8 EDID data at U4 In digi tal Board Check HDMI_PWR &5VSTB No sound in HDMI mode Check the EDID data &Audio output at U401 Check the signal at JP4(HDMI Connector) Change JP4 Change Digital B/D 34

35 <Waveform 7 SCL > <Waveform 7 SDA > <Waveform 8 > 35

36 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 at U1 in digital B/D Check the state of soldering at JP1 &input signal part Waveform 9 The output signal At U401 In digital Board Check U401 and Y400 and related circuit Waveform 10 Dose the signal appear at PR14~19 In digital B/D Check U16 and Y2 and related circuit Waveform 11 Dose the signal appear at PR29,31,34,35,38,39 In digital B/D Check U20 and X2 and related circuit Waveform 12 Check the LVDS Cable and JP500 in Digital B/D Change the LVDS Cable &LVDS chip Change Digital B/D Test Patterm : SMPTE Color Bats 36

37 < Waveform 9 #22 > < Waveform 10 > < Waveform 9 #25 > < Waveform 11 > < Waveform 9 #27 > < Waveform 12 > 37

38 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) #63 at U706 in DTT & Analog B/D Check A_CVBS1 input part Waveform 13 #119 At U711 In DTT&Analog Board Check U706 & input part of U711 Waveform 14 Dose the signal appear at PR22,24 25,26 In DTT&Analog B/D Check U16 and Y2 and related circuit Waveform 11 Dose the signal appear at PR29,31,34,35,38,39 In digital B/D Check U20 and X2 and related circuit Waveform 12 Check the LVDS Cable and JP500 in Digital B/D Change the LVDS Cable &LVDS chip Change Digital B/D 38

39 < Waveform 13 > < Waveform 12 > < Waveform 14 > < Waveform 11 > 39

40 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) #8(1),15(2),22(3) at U706 in DTT & Analog B/D (1):VIDEO01 (2):VIDEO01 (3):VIDEO01 Check CVBS input part Waveform 15 #119 At U711 In DTT&Analog Board Check U706 & input part of U711 Waveform 14 Dose the signal appear at PR22,24 25,26 In DTT&Analog B/D Check U16 and Y2 and related circuit Waveform 11 Dose the signal appear at PR29,31,34,35,38,39 In digital B/D Check U20 and X2 and related circuit Waveform 12 Check the LVDS Cable and JP500 in Digital B/D Change the LVDS Cable &LVDS chip Change Digital B/D 40

41 < Waveform 15 > < Waveform 12 > < Waveform 14 > < Waveform 11 > 41

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) #10,12(1),17,19(2),24,26(3) at U706 in DTT & Analog B/D (1):S-VIDEO01 (2):S-VIDEO01 (3):S-VIDEO01 Check CVBS input part #121,128 At U711 In DTT&Analog Board Waveform 16,16-1 Check U706 & input part of U711 Waveform 17,17-1 Dose the signal appear at PR22,24 25,26 In DTT&Analog B/D Check U16 and Y2 and related circuit Waveform 11 Dose the signal appear at PR29,31,34,35,38,39 In digital B/D Check U20 and X2 and related circuit Waveform 12 Check the LVDS Cable and JP500 in Digital B/D Change the LVDS Cable &LVDS chip Change Digital B/D 42

43 < Waveform 16 C > < Waveform 17 Y > < Waveform 16 Y > < Waveform 12 > < Waveform 17 C > < Waveform 12 > 43

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. No Sound in DVI Audio R/L #29,31 at U706 in DTT & Analog B/D Check DVI Audio input part Waveform 18 #56,57 At U751 In DTT&Analog Board Check U706 & input part of U751 Waveform 19 #11,15 At U200 In Audio Amp Board Check U751 and Y800 and related circuit Waveform 20 #28,31,27,24 At U200 Check U20 and X2 and related circuit Waveform 21 Change Speaker 44

45 < Waveform 18 > < Waveform 21 > < Waveform 19 > < Waveform 20 > 45

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. No Sound in CVBS Audio R/L #9,11(1),16,18(2),23,25(3) at U706 in DTT & Analog B/D (1):VIDEO01 Audio (2):VIDEO01 Audio (3):VIDEO01 Audio Check CVBS Audio input part Waveform 18 #56,57 At U751 In DTT&Analog Board Check U706 & input part of U751 Waveform 19 #11,15 At U200 In Audio Amp Board Check U751 and Y800 and related circuit Waveform 20 #28,31,27,24 At U200 Check U200 and X2 and related circuit Waveform 21 Change Speaker 46

47 < Waveform 18 > < Waveform 21 > < Waveform 19 > < Waveform 20 > 47

48 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. No Sound in Component Audio R/L (1):Component1 Audio (2):Component2 Audio #50,51(1),47,48(2) at U751 in DTT & Analog B/D Check Component Audio input part Waveform 19 #11,15 At U200 In Audio Amp Board Check U751 and Y800 and related circuit Waveform 20 #28,31,27,24 At U200 Check U20 and X2 and related circuit Waveform 21 Change Speaker 48

49 < Waveform 19 > < Waveform 20 > < Waveform 21 > 49

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 #67 at U751 in DTT & Analog B/D Check TV SIF input part Waveform 22 #11,15 At U200 In Audio Amp Board Check U751 and Y800 and related circuit Waveform 20 #28,31,27,24 At U200 Check U20 and X2 and related circuit Waveform 21 Change Speaker 50

51 < Waveform 22 > < Waveform 20 > < Waveform 21 > 51

52 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. but the CC Does Not display Waveform 23 Check the Micom_CVBS (Pin 121) of IC SDA6001(U29) Check Micom CVBS Connection part Check CC_R,G,B,FB,H,V-sync of IC SDA6001(U29) Waveform 24 R,G,B,FB,H-sync V-sync Check the crystal(x2) and related parts on U29 Change the upd

53 < Waveform 24 R > < Waveform 24 FB > < Waveform 24 G > < Waveform 24 H-sync > < Waveform 24 B > < Waveform 24 V-sync > 53

54 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. but the Function does not operate. Waveform 25 Check the IR Micom(Pin 76) of IC SDA6001(U29) Check Remocon output and Power in LED Board Check the Micom part (IIC Comunication, other Control line) Exchange the IC(U29) When you power switch off, the set off Exchange the IC(UP1) Exchange the Digital Board 54

55 < Waveform 25 > 55

56 13. Key Key switch is 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. but the Function does not operate. Waveform 26 Check the key1,key2 (Pin 124,125) of IC SDA6001(U29) Check Control Key Board and Power in LED Board Check the Micom part (IIC Comunication, other Control line) Exchange the IC(U29) Check IR processor (UP1) Exchange the IC(UP1) Exchange the Digital Board 56

57 < Waveform 26 > < Waveform 26-1 > 57

58 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 Check the Digital Board or SMPS Perform short circuit test on each power lines. Check the voltage output of JP709 & JP701. Check the voltage output of JP709 & JP701 after connecting them. *JP V V V 4. GND 5. GND 6. GND V V V 10. GND 11. GND 12. GND *JP A6VCC 10. A6VCC Check the power line path from connector to on-board regulators. Check the input voltage of on-board regulators Check the soldering status of on-board regulators. Perform short circuit test on each power lines. Check the output voltage of on-board regulators Check the power line path from on-board regulators to each components. Note) Please refer to the power diagram of PAU-42THD for detail power connectivity information. Note) Each input power of DTT comes via the digital board of SMPS directly. So, please check the digital board prior to SMPS when power input is not working properly. 58

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. Instead, MCU of digital board gets the keys and passes them to DTT through the UART0. (Pin 34 &35 of JP701) Mulfunction or Not Working of Remote Control Unit Check the battery of the RCU. Check the RCU. Replace the battery/rcu Check the connector (JP701) Secure the connector Waveform 1 (When '' key is pressed) Check the UART0_RX signal (Pin 33 of JP701) Check the digital board / Check the IR & LED board Check signal line path to the main CPU of DTT board (U2) < Waveform 1 > 59

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. Power Supply is O.K. but the STB Does Not Wake up Waveform 2 Check the System Clock 27MHz (Pin 15) of IC MK G (U261) Check X-Tal(Y261) and related parts Waveform 3 Ch:CLK, Ch2:CLK~ Check DDR-SDRAM Clock (Pin 45 and 46) of DDR-SDRAM (U5, U6, U7 and U8) Waveform 4 Ch:3.3V, Ch2:Reset Check the Vref and VTT voltage and clock of DDR-SDRAM or related parts Check system reset of Pin1 on U281 Check the soldering state of U281 or Replace U281 Waveform 5 Ch1:Reset, Ch2:CS/ Ch3:OE/ Check RESET, CS and OE signals of Flash Memory Check Flash Memory (U40) or related parts Useful Tips Check for other defective modes 1. An Unstable 27 MHz clock may be due to defect of X-TAL or clock generator (U261). Replace the X-Tal or U DDR-SDRAM have difference clock inputs which are positive and others are negative signal (Double Data Rate). 3. Vref and VTT are have Vcc/2 and check the power source whether defected. 4. When replacing parts, be cearful of static charges from the tip of the solder iron that can easily damage the parts. Also, check for assembly condition, soldering condition, or for incorrect or reverse insertion of parts. 5. If the problems are caused by CPU, change CPU board and download Serial Number. 60

61 < Waveform 2 > < Waveform 5 > < Waveform 3 > < Waveform 4 > 61

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. Does Not Boot after System/Power-On Reset Waveform 2 Waveform 4 Reset timing promlem Check the Reset and clock timing of CPU 27 MHz Clock problem Check the reset signal of Flash and Pin1 of U281 Check the soldering status of X-TAL(Y261) and U261 Check the communication between DTT and digital board Waveform 5 Check the soldering status of JP282. Check the digital board Check the soldering status of U40(Flash Memory) and U62 Check Flash Memory Waveform 6 Ch1:SLC, Ch2:SDA Check the waveform CS and OE of Flash Memory Check the soldering state of EFPROM Check the 12C Line (Pin 6, 5 of U31) Useful Tips Check for other defective modes 1. The CPU have two 12C for system controller. One is communicate with system 12C(TDA10046) and the other is communicate with serial EFPROM for storing data. 2. When the system will not operate even though the basic inspection results were normal, check Flash Memory which contains channel data and program contents. 3. Additionally check for Local DATA and Local ADDRESS buses between CPU and Flash Memory. 4. When replacing parts, be careful of static changes from the tip of the solder iron that can easily damage the parts. Also, check for assembly condition, soldering condition, or for incorrect or reverse insertion of parts. 5. If the problems are caused by CPU, change CPU board and download Serial Number. 62

63 < Waveform 2 > < Waveform 6 > < Waveform 4 > < Waveform 5 > 63

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. The main cause of the problems related to System Memory (i.e.flash and DDRSDRAM)is the soldering of parts. Therefore, first check the soldering condition and the power supply of IC. Error Occurs During S/W Installation or Update through BOOTROM Board. Waveform 5 Check Flash Access signal CE(Pin 14), OE(Pin 54) Check CPU and Flash Memory (Incorrect insertion, poor soldering, etc.) Check the Data and Addresses of DDR-SDRAM Waveform 7 Ch:DDR0A0 CH:DDR0D0 Re-check the basic inspection items Check for other defective modes Useful Tips 1. Check CE, OE and WE of Flash Memory when system does not operate or cannnot update for new software. 2. When the system will not operate even though the basic inspection results were normal, check Flash Memory which contains channel data and program contents. 3. Additionally check for Local ADDRESS buses between CPU and Flash Memory. 4. Check the Memory interface of DDRSDRAM if the Flash Memory is not defected. 5. When replacing parts, be careful of static charges from the tip of the solder iron that can easily damage the parts. Also, check for assembly condition, soldering condition, or for incorrect or reverse insertion of parts. 6. If the problems are caused by CPU, change CPU board and download Serial Number. 64

65 < Waveform 5 > < Waveform 7 > 65

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. Check control lines between DDR-SDRAM and CPU also data/address lines. The main cause of the problems related to System Memory (i.e.flash and DDR-SDRAM)is the soldering of parts. Therefore, in the event of a problem, first check the condition of the soldering and the power supply of IC. No problems Found on during Basic/Memory Inspections but MPEG Play Does Not Work Waveform 8 Ch1:RAS/, Ch2:CAS/, Ch3:WE/ Check the output of DDR SDRAM control interface Waveform 7 Check the solding status of DDR-SDRAM (U5, U6, U7 and U8) Check the adress and data lines of between CPU and DDR-SDRAM Recheck the basic inspevtion items Check for other defective modes Useful Tips 1. Make sure that basic function of the system is normal by checking that the VFD toggles each time you press the Front power key. 2. Check the interface between CPU and DDR-SDRAM U5, U6, U7 and U8. The interface is composed of clock(133mhz), address, data and control signals. 3. If all connections are complete, replace the DDR-SDRAM. 4. If the problems are caused by CPU, change CPU board and download Serial Number. < Waveform 7 > 66 < Waveform 8 >

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. No video Output U2(PIN:A9):CVBS U2(PIN:B9, C9): S-VHS JP141(PIN1, 3, 5,):YPbPr Check the Video output of CPU Check the path between CPU and JP705, JP706 (Incorrect insertion, poor soldering, short circuits, damage, etc.) Waveform 9-1 (CVBS) Waveform 9-2 (YPbPr) Check the TS line between CPU and U531 Check the TS signal path from tuner to U531. Useful Tips Check for other defective modes 1. If no output of TS data but tuner is good, check the U531 and relevant components. < Waveform 9-1 > < Waveform 9-2 > 67

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, Ch2:LRCLK, Ch3:ADATA0 Check the CPU 12S output Check the path between CPU and Clock (Incorrect insertion, poor soldering, short circuits, damage, etc.) Waveform 11 Check the Audio clock Pin 9 of U261 Check the X-TAL and U261 (Incorrect insertion, poor soldering, short circuits, damage, etc) Check the Audio DAC for U761 Check the path between Audio DAC and CPU (Incorrect insertion, poor solding, short circuits, damage, etc) Useful Tips Check for other defective modes 1. The Audio problem largely from the defect of CPU, Audio DAC or incomplete soldering of the parts located along the audio output path. 2. Audio DAC pins represent serial data, LR clock, Bit clock and system clock, respectively. < Waveform 10 > < Waveform 11 > 68

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 IEC958 output signal J5 of U2 Check the path between CPU and IEC958 line (Incorrect insertion, poor soldering, short circuits, damage, etc.) Check for other defective modes < Waveform 13 > 69

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 * +1.8V PIN16, 19, 32, 42, 47, 55, 63, 68, 74, 81, 85, 89, 100 Check the LGDT3303 input voltage After the basic inspection, check the path between U501 and LGDT3303 (Incorrect insertion, poor soldering, short circuits, damage, etc) - LDGT3303 PIN26 * low : reset on * high : reset release Check the LGDT3303 input (Reset) = high Check the path between CPU and LGDT3303 (Incorrect insertion, poor soldering, short circuits, damage, etc.) Waveform 14 - LGDT3303 Pin 79, 80 * 25MHz clock Check the LGDT3303 input clock Check the path between LGDT3303 and X-Tal (Incorrect insertion, poor soldering, short circuits, damage, etc.) - 12C CLOCK [PIN48] - 12C DATA[PIN49] Check the 12C control Check the path between devices the LGDT3303 and EEPROM Also, check Incorrect insertion, poor soldering, short circuits, damage, etc.) Check other related part Useful Tips 1. Check the power byu532 are properly provided to the U Check the 12C interface between tuner and If no problem, inspect along the tuner output path to TDA Whether the components of R, L, C's soldering status. 3. If no problem, replace the Tuner. 4. If the problems are founded by CPU, replace the CPU board and also download SN. 70

71 < Waveform 14 > 71

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 * +5VDT of PIN 3, 7 Check the TUNER power After the basic inspection, check the path between SMPS and TUNER (Incorrect insertion, poor soldring, short circuits, damage, etc) * PIN48 [SCL] of LGDT3303 * PIN49 [SDA] of LGDT3303 Check the path between Check the 12C DATA and CPU and LGDT3303 (Incorrect CLOCK of TUNER insertion, poor soldering, short circuits, damage, etc.) Waveform 15 * VIN+ * VIN- Check the TUNER output (VIN+, VIN-) Check the path between LGDT3303 and TUNER (Incorrect insertion, poor soldering, short circuits, damage, etc.) Waveform 16 * PIN22(TUNER_AGC) of LGDT3303 Check the TUNER AGC Check the path between LGDT3303 and Tuner (Incorrect insertion, poor soldering, short circuits, damage, etc.) Waveform 17 * PIN46(VSB_CLK) of LGDT3303 high : lock low : unlock Check the output of Pin46 is high, also check clock and valid of LGDT3303 Replace the related parts (demodulator) * VSB_D [7 : 0] of LGDT3303 Check the TS DATA output and goes to CPU Replace the related parts (demodulator) Check for other defective modes 72

73 < Waveform 15 > < Waveform 16 > 73

74 DISASSEMBLY 1 Rear Case(42a3HD), Stand and Shield Assys 1 Remove the 15 screws (T4 x 16). 2 Remove the two screws (M4 x 12). 3 Remove the 17 screws (M4 x 8) SHIELD ASSY and STAND ASSY 4 Remove the nine screws (M3 x 8). 5 Remove the four screws (M4 x 12). 6 Remove the stand STAND ASSY SHILED ASSY 74

75 2 ANALOG, DIGITAL and EMI FILTER 7 Remove the six screws (M3 x 8). 8 Remove the eight screws (M4 x 8). 9 Remove the connector (right center left). 10 Remove the ANALOG DIGITAL EMI FILTER SMPS Remove the Assy Brkt V-supporter L and R. 11 Remove the four screws (M3 x 8) to release the ASSY BRKT MAIN. 12 Remove the four screws (M5 x 12). 13 Remove the eight screws (T4 x 16). 14 Remove the five screws (M3 x 8) to release the SMPS ASSY BRKT MAIN

76 3 SHIELD SIDE Remove the SHIELD SIDE 15 Remove the three screws (T4 x 16). 16 Remove the screw (M4 x 10) Remove the three screws (M4 x 8) PDP PANEL 76

77 4 SPEAKERS Remove the two screws to release the LED PCB. 20 Remove the eight screws (T4 x 14) to release the SPEAKER L/R. SPEAKER R 18 SPEAKER L LED PCB 77

78 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. Adjustments after replacement of parts in the module 5. Operation check 1. List of tools required for repair a) Phillips screwdriver:for detaching/reattaching PKGs b) Antistatic wrist strap: To be used when electronic components, such as PKGs, are to be handled c) Signal generator (PC, etc.) :For voltage adjustment and display check d)dvm:for voltage adjustment. f) DVMTester:For cable check, voltage adjustment, etc. g) Cushion:To be used when the PKGs are to be replaced Note: Be sure to wear a wrist strap when you detach/reattach PKGs (Board Assy) to protect electronic components from being damaged by electrostatic charges. 78

79 PARTS LIST NP42H5MF01PA/PB PART NAME SYMBOL TYPE NAME VERSION PART NO QTY NOTE 1 PKG42H5G1 03B 9S High Voltage Board 2 PKG42H5C1 17C-08 9S Digital Board 3 PKG42H5J7 02A 9S Data Relay Board(Left Down) 4 PKG42H5J8 02A 9S Data Relay Board(Right Down) 5 PKG42H5J5 02A 9S Data Relay Board(Left Up) 6 PKG42H5J6 02A 9S Data Relay Board(Right Up) 7 PKG42H5E1 02A 9S Scan Relay Board(Up) PKG42H5E1 02C 9S PKG42H5E2 02A 9S Scan Relay Board(Down) PKG42H5E2 02C 9S PKG42H5E3/50X6E3 02A 9S Scan Relay Board(Center) 11 PKG42H5J4 02A 9S Common Connection Board 12 PKG42H5J3 02A 9S Common Relay Board Notes: The version of a board assy (PKG) is indicated on the label on the board assy. When replacing the scanning relay board assys (PKG-C), make sure that the PKG-U and PKG-D of the same version are used, to ensure correct scanning timing Data Relay (Left up) Data Relay (Right up) Scan Relay Board (Up) 7 11 Common Connection Common Relay Board High Voltage Board 10 8 Digital Board 2 Data Relay Board (left) Data Relay Board (right) Scan Relay Board (Down) Version label of the board assy (PKG) 3 4 Part name Serial number HW version SW version Part name Serial number Version number Digital PKG Other PKG 79

80 Compatible table of the board version NP42H5MF01PA/PB Upper compatible if no terms. Name of (board) Version Replaceable Version 03B High Voltage Board PKG42H5G1 03B Conditions Note Common Connection Board PKG42H5J4 01A 02A 01A/02A Data Relay Board(Left Down) PKG42H5J7 01A 02A 01A/02A Data Relay Board(Right Down) PKG42H5J8 01A 02A 01A/02A Data Relay Board(Left Up) PKG42H5J5 01A 02A 01A/02A Data Relay Board(Right Up) PKG42H5J6 01A 02A 01A/02A Common Relay Board PKG42H5J3 01A 02A 01A/02A Scan Relay Board(Center) PKG42H5E3/50X6E3 01A 02A 01A/02A Scan Relay Board(Up) PKG42H5E1 01A 02A 01A 02C 01A/02A 01C/02C Scan Relay Board(up) should be combined with the same version of Scan Relay Board(Down). Scan Relay Board(Down) PKG42H5E2 01A 02A 01C 02C 01A/02A 01C/02C Scan Relay Board(Down) should be combined with the same version of Scan Relay Board(Up). 01C-07/02C-07 11C-07/12C-07 13C-07 14C-07 Digital Board PKG42H5C1 12C-08 14C-08 17C-08 15C-08 16C-08 17C-08 80

81 TROUBLE SHOOTI Follow the procedure below for failure diagnosis. Keep wearing Antistatic wrist Band until all work and testing has finished. Procedure FOR BASIC Service TROUBLE SHOOTI From Service Manual of the product Exchange PDP Reconnect or exchange Model, Serial No. and Panel ID. Page 82 (1) Panel Crack Page 82 (2) Connectors/Cables Page Reuse H Line Page (Page 87-92) Phenomenon Reproductio V Line Picture Power-off V Line Page 87 Page 91 Page Page118 Page Page

82 (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 NEC MODEL NP42H5MF MADE IN JAPAN CODE AA-C3 NEC Plasma Display Corporation Above Example Model:NP42H5MF01AA Serial No.: (2) Panel Crack Refer to the photographs below to check panel for crack. Panel may be cracked due to handling during or after transportation. 82

83 (3) Connectors/Cables (3-1) Check connectors and cables for breakage or disconnection referring to the photos below. Data Relay Flexible Cable (UP) Scan Voltage Flexible Cable Common Voltage Flexible Cable 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. See Page for the right procedure of connection. Data Relay Board (LU) Data Relay Board (RU) Common Connection Board Digital Board Common Relay Board High Voltage Board Scan Relay Board (D) Scan Relay Board(U) Data Relay Board (LD) Data Relay Board (RD) 83

84 Right Connection (Part 1) High voltage Board( Photo) - Digital Board Scan Relay Board (Photo) - Panel Common Relay Board (Photo) - Panel Locked Unlocked Right Connection (Part 2) Digital Board (Photo) -High Voltage Board High Voltage Board (Photo) -Data Relay Board High Voltage Board (Photo) -Scan Relay Board(Photo) Locked Unlocked 84

85 Right Connection (Part 3) Data Relay Board (Photo) -Panel Common Connection Board (Photo) -Common Relay Board High Voltage Board (Photo) -Common Relay Board (Photo) Locked Unlocked 85

86 Right Connection (Part 3) Data Relay Board (Photo) -Panel Common Connection Board (Photo) -Common Relay Board High Voltage Board (Photo) -Common Relay Board (Photo) Locked Unlocked 86

87 Symptom : Vertical line Block (Note)Typical Symptom are only shown. Another Symptom might appear. Cause/Countermeasure: 1 Open or contact failure of Data flexible Cable ] Clean, Reconnect or exchange connector. 2 Failure in Data IC ] Exchange PDP. Cause/Countermeasure: 1 Open or contact failure of connector between Data Relay Board and Digital Board/High Voltage Board ] Clean, Reconnect or exchange connector. 2 Open or contact failure of multiple Data flexible Cables ] Clean, Reconnect or exchange connector. 3 Failure in Data Relay Board ] Exchange the Data Relay Board. 4 Failure in multiple Data IC ] Exchange PDP. Horizontal Line Symptom : Horizontal lines Cause/Countermeasure: 1 Failure in Scan IC on Scan Relay Board - Exchange Scan Relay Board. 2 Open or contact failure of Scan Flexible Cable (CN01-CN04) at output side of Scan Relay Board (U,D) ] Clean, Reconnect or exchange connector. 3 Contact failure of connector between Scan Board and Scan Relay Board ] Clean, Reconnect or exchange connector. 4 Short between terminals of Scan IC due to screw dust ] Clean around the terminals. 87

88 Picture Defect (Note) Typical symptom are only shown. Another Symptom might appear. Symptom:No Picture(Priming flash). High Voltage Board Glass Fuse (F302) Cause/Countermeasure: 1F302 open ] Exchange High Voltage Board. : Short : Open 88

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 ]Exchange Data Relay Board (LU). b) If the connector CN7708 disconnected from Data Relay Board (RU) is short-circuited between Pin 1 and GND (Pin 2 or 6) ]Data Relay Board (RU) is failed ]Exchange Data Relay Board (RU). Data Relay Board (LU) Data Relay Board (RU) Data Relay Board (RU) CN7608 CN7708 CN7709 CN7709 : Open : Short Cause/ Countermeasure : 4 If the connector CN7909 disconnected from Data Relay Board (RD) is short-circuited between Pin 1 (or 2) and GND (Pin 3 or 4) ] Data IC is broken ] Exchange PDP. 5 If the connector CN7909 disconnected from Data Relay Board (RD) is short-circuited between Pin 5 (or 6) and GND (Pin 3 or 4) ] Data Relay Board (LD) or (RD) is failed ] a) If the connector CN7808 disconnected from Data Relay Board (LD) is short-circuited between Pin 8 and GND (Pin 3 or 7) ] Data Relay Board (LD) is failed ] Exchange Data Relay Board (LD). b) If the connector CN7908 disconnected from Data Relay Board (RD) is short-circuited between Pin 8 and GND (Pin 3 or 7) ] Data Relay Board(RD) is failed ] Exchange Data Relay Board (RD). CN7909 CN7808 CN7908 CN7909 : Open Data Relay Board (LD) Data Relay Board (RD) Data Relay Board (RD) : Short 89

90 Symptom:No Picture. (Priming doesn t flash if W-X erminals are short-circuited.) High Voltage Board; Reverse Cause/Countermeasure: No Diode characteristic ]Exchange High Voltage Board. High Voltage Board; Surface PH2401F X (112) W (109) V (107) T (99~103) S (93~96) R (91) Q (86~89) P (81~84) O (76~78) N (71~74) PH2401F Checkpoints A-D A-E B-D C-D E-R F-N G-M H-I I-J K-L M-L N-P O-P Q-R R-S R-T S-T T-V W-X A (1~4) B (6~9) C (10~13) D (15~18) E (24) F (33~35) G (39~40) M (66~69) L (61~64) K (57~59) : Diode characteristic : Other than above H (49~50) I (53) J (55~56) 90

91 Symptom:Abnormalities in a picture One or more vertical bands, Multiple vertical lines Transparent vertical band Out of synchronization or duplication Mosaic Rectangular color shear,color discrepancy, shear in display A number of lateral lines, 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 ] Failure in Digital Board 91

92 Power off (Note) Typical Symptom are only shown. Another Symptom might appear. 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 : Short : Open Glass Fuse (F301) Digital Board : Short : Open Chip Fuse (FU801) 92

93 Cause/Countermeasure : If short-circuited, disconnect connector between High Voltage Board and Scan Relay Board and, 4 Short between NEGA-POSI on High Voltage Board ]Exchange High Voltage Board. 5 Short between NEGA-POSI on Scan Relay Board (U) ]Exchange Scan Relay Board (U). 6 Short between NEGA-POSI on Scan Relay Board (D) ]Exchange Scan Relay Board (D). High Voltage Board Scan Relay Board (U) NEGA POSI Checkpoint NEGA-POSI : More than kω : Short High Voltage Board Scan Relay Board (D) POSI Checkpoint NEGA-POSI NEGA : More than kω : Short 93

94 Symptom: No Picture ] Power off(priming flash) Cause/Countermeasure: R91 open ] Exchange High Voltage Board. High Voltage Board Fuse Resistor (R91) R91 : About 2.2 Ω(1W) : Open 94

95 Symptom: Failure in Writing ] Power off Symptom: White pattern even in no signal ] 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 (R43),(R61) Fuse Resistor (R150) R43 : About 3.3 Ω(2W) : Open R61 : About 4.7 Ω(2W) : Open R150 : About 4.7 Ω(2W) : Open 95

96 METHOD OF DISASSEMBLY Follow the procedure below for diagnosis. Disassembly Prepare tools. Right photo Prepare product. Right photo Disconnect connectors and cables on failed Board. Page 128 Detach failed Board. Page 128 Put on good Board. Page Connect connectors and cables. Page129 (Caution) Put cushion under failed PDP to cover general surface of glass before laying it s screen down. 96

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) 8 connectors Data Relay Board (RU) 9 connectors Common Connection Board 5 connectors Digital Board 7 connectors Common Relay Board 1 connector High Voltage Board 6 connectors Scan Relay Board (U) 5 connectors Scan Relay Board (D) 5 connectors Data Relay Board (LD) 8 connectors Data Relay Board (RD) 9 connectors Loosen screws of failed Board and put on good Board. (Caution) Be careful not to leave screwdriver, screw or screw dust. Be sure to take off Heat Sink before detach Data Relay Board. See the next page for the procedure. Data Relay Board (LU); 3 screws Data Relay Board (RU); 3 screws Common Connection Board 9 screws Digital Board 4 screws Common Relay Board15 screws High Voltage Board15 screws Scan Relay Board (U) 2 screws Scan Relay Board (D) 2 screws Scan Relay Connection Board 2 screws Data Relay Board (LD) 3 screws Data Relay Board (RD) 3 screws 97

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 (LU) 8 connectors Data Relay Board (RU) 9 connectors Common Connection Board 5 connectors Digital Board 7 connectors Common Relay Board 1 connector High Voltage Board 6 connectors Scan Relay Board (U) 5 connectors Scan Relay Board (D) 5 connectors Data Relay Board (LD) 8 connectors Data Relay Board (RD) 9 connectors 98

99 How to detach Heat Sink (Caution) Stress on detaching easily breaks flex cable because Data TCP is sticking with Heat Sink (heat-conductive silicone sheet).(see Photo4) Before detaching 1. Slowly swing Heat Sink back and forth.(1,2) 2. Gently lift Heat Sink up from Data TCP.(1,2) 3. Repeat1 and 2 until Heat Sink is taken off.(3) 4 Heat Sink and Data TCP Reverse of Heat Sink Be careful of sticking. 1 Heat-conductive silicone sheet Data TCP mounted on Flexible cable 3 2 Heat Sink 99

100 (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 Be sure to confirm voltages on Voltage label before conducting adjustment. Voltage Label Example Vbw : Vsw1 : VP : Vsw2 : Vbw Vsw1 Vp Vsw2 (s190.0/d70.0)115.2/220.2/249.8/210.1 ************************************* (3) Adjustment of Vsw1 & Vsw2 (Caution) Use the nearest chassis for grounding. Vsw1 : Adjust VR3 so that the voltage between Test Pad (TP328) and GND becomes Rated Voltage on Label ± 0.5V. Vsw2 : Adjust VR4 so that the voltage between Test Pad (TP310) and GND becomes Rated Voltage on Label ± 0.5V. High Voltage Board TP310 Vsw2 VR3 Vsw1 VR4 Vsw2 TP328 Vsw1 100

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 ± 0.5V. High Voltage Board VR2 Vbw TP329 Vbw VR1 Vp TP327 Vp 101