Akai PDP4273M Service Manual
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Akai PDP4273M Service Manual

Akai PDP4273M Service Manual

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SERIAL NUMBERS
50260001-50262520 / 50262521~50264281
50320001-50321080 / 60040001~60041080
60050001~60050840

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Summary of Contents for Akai PDP4273M

  • Page 1 SERIAL NUMBERS 50260001-50262520 / 50262521~50264281 50320001-50321080 / 60040001~60041080 60050001~60050840...

  • Page 2: Table Of Contents

    SERVICE MANUAL Model: PDP4273M Safety Precaution................1-2 Technical Specifications..............3-10 Block Diagram................11-12 Circuit Diagram................13-28 Basic Operations & Circuit Description...........29-33 Main IC Specifications..............34-54 Panel Information................55-67 Spare Part list.................68-69 Exploded View..................70 If You Forget Your V-CHIP Password..........71 Software Upgrade................72 This manual is the latest at the time of printing, and does not include the modification which may be made after the printing, by the constant improvement of product.

  • Page 3: Safety Precaution

    Safety Precaution The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to CAUTION alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclo RISK OF ELECTRIC SHOCK sure that may be of sufficient magnitude to DO NOT OPEN constitute a risk of electric shock to persons.

  • Page 4: Product Safety Notice

    PRODUCT SAFETY NOTICE 5. When replacing a MAIN PCB in the cabinet, always be certain that all protective are installed properly such as control knobs, Many electrical and mechanical parts in this adjustment covers or shields, barriers, isolation apparatus have special safety-related resistor networks etc.
  • Page 5 Technical Specifications PDP4273M Standard Test Conditions All tests shall be performed under the following conditions, unless otherwise specified. Ambient light 150ux (When measuring I , the ambient luminance ≦0.1Cd/m Viewing distance 50cm in front of PDP Warm up time 30 minutes...

  • Page 6: Technical Specifications

    Technical Specifications PDP4273M ELECTRICAL CHARACTERISTICS Power Input 60Hz Voltage 100 ~120VAC 5.0 /2.5A Input Current Maximum Inrush Current <30 A (FOR AC110V ONLY) Test condition Measured when switched off for at least 20 mins Frequency 60Hz(±3Hz) 330W Typical Power Consumption...
  • Page 7 Technical Specifications PDP4273M 4.2 Audio input VGA(D-Sub 15 Pin Type) ×1 D-Sub 9 Pin (RS-232 Input) × 1 HDMI (Ver. 1.1) connector × 1 S-Video (Mini Din 4 Pin) × 1 V i d e o Input (RCA Type) × 1 YPbPr x 2 Stereo , Audio ×...
  • Page 8 Technical Specifications PDP4273M 6.11 Color temperature Contrast at center (50); Brightness center (50); Color temperature set at Natural x=0.285±0.02 y=0.290±0.02 6.12 Cell Defect Specifications Subject to Panel supplier specification as appends. Front Panel Control Button SEL. Up / Down Button Select the Up/Down item in OSD menu.
  • Page 9 Technical Specifications PDP4273M 9. Agency Approvals Safety UL, FCC, FDA Emissions UL, FCC, FDA 10. Reliability MTBF : 20,000 hours(Use moving picture signal at 25°C ambient) 11. Accessories User manual x1, Remote control x1, Stand x 1, Battery x 2, AC Cable x 1 12.
  • Page 10 Technical Specifications PDP4273M 13 V-Chip: Press this button to enter the V-Chip Function. (Only for AV or S-Video) 14 Number buttons: Use these buttons to enter the password. 15 Swap: Press this button to switch the Main window or Sub window pictures in PIP and Split Screen.
  • Page 11 Technical Specifications PDP4273M 13. Support the Signal Mode 13.1. VGA Mode, HDMI Mode or HDTV Mode (YPbPr 1 or YPbPr 2) Horizontal Vertical Dot Clock Mode Resolution Frequency Frequency Frequency (kHz) (Hz) (MHz) 640 x 480 31.50 60.00 25.18 800 x 600 37.90...
  • Page 12 Technical Specifications PDP4273M PHYSICAL CHARACTERISTICS 14. Power Cord Length 1.8m nominal Type optional 15. Cabinet black colour as defined by colour plaque reference number 15.1 Color 15.2 Weight(W/Ostand) 39.2kg Net weight (W/O stand&handles) 15.3 Dimensions 1039mm Width 719.9mm Height 109.5mm Depth 10／72...

  • Page 13: Block Diagram

    Block Diagram Product Specification of PDP Module Vs(180V~190V) Memory LVDS Input Controller Input Va(55V~65V) Interface Vcc(+5V) Controller Control Signal (Serial Interface) Driver Timing APL Data Controller Display data, Driver timing Color Plasma Display Panel 852 X 480 pixels Address Driver ☞...

  • Page 14: Block Diagram

    Block Diagram MAIN/AUDIO BOARD C 4344 Audio DAC 12／72...

  • Page 15: Circuit Diagram

    Circuit Diagram - Main (Video) board - Audio/Tuner board - Keypad board - Remote control receiver board - Remote control board 13／72...
  • Page 16 JP902 SPDIFOUT Using digital interface: U902 OVDD3.3V# PLL1.8V OVDD3.3V# AVDD3.3V# L900 L903 L914 TVDD3.3V AVDD3.3V DVdd (1.8V) (DVdd+CVdd) 130mA 234mW INPUT OUTPUT L915 C954 C916 C917 C918 C924 C925 C956 C949 C950 C951 C952 C907 C909 PVd (1.8V) (PVd+ALVdd) 30mA 54mW C910 C904 C901...
  • Page 17 D3V3D U1502 D7_SRAM A17_SRAM I/O8 D6_SRAM A16_SRAM I/O7 R1514 RP1503 D5_SRAM A15_SRAM GPIO_P33 I/O6 D4_SRAM A14_SRAM GPIO_P32 I/O5 SDA_S3V SDA_S3V D3_SRAM A13_SRAM GPIO_P31 I/O4 R1515 D2_SRAM A12_SRAM GPIO_P30 I/O3 SCL_S3V RP1501 RP1502 SCL_S3V RP1504 D1_SRAM A11_SRAM TT_SEL I/O2 D0_SRAM A10_SRAM C1512 I/O1 C1513...
  • Page 18 U1101 L1112 VV33 R1112 INPUT OUTPUT R1121 TV_CVBS_M# C1105 C1108 R1114 CVBS_O C1164 Q1101 R1104 3230_VO 3230_VO R1113 R1106 C1163 C1171 R1103 5VVV SGND MREST RP1105 R1101 SDA_S3V C1141 C1142 C1143 C1146 C1145 C1144 SCL_S3V R1102 5VVV RP1106 SGND SGND L1107 C1148 C1147...
  • Page 19 U1401 GV33 INPUT OUTPUT L1412 R1412 C1405 R1414 CVBS_S_O C1463 C1464 5VVG Q1401 SGND R1413 R1404 R1421 C1441 C1442 C1443 C1446 C1445 C1444 C1471 R1403 TV_CVBS_S# MREST C1424 5VVG R1406 SGND SGND TV_CVBS_S L1407 R1401 TV_CVBS_S G_AVCVBS G_AVCVBS SDA_S3V C1448 C1447 GV33 SCL_S3V...
  • Page 20 C860 C861 U803 R860 V_TT_R TT_VVVS Vin/INTRO V_TT_R SDA_S5V R855 R861 V_TT_G V_TT_G SCL_S5V R856 R862 V_TT_B V_TT_B 5V_V_CCD I2C/SEL SGND R815 SGND R863 V_TT_FSO TT_VVHS V_TT_FSO R857 C855 5V_V_CCD 3230_VO VIDEO SCL_S5V SCL_S5V SCL_S3V Q801 R854 CSYNC RREF V33SW VSS(A) R852 R858...
  • Page 21 D3V3B R1305 D3V3B U1301C C1354 R1329 RESET R1317 R1306 R1321 DCLK DCLK GCOAST R1318 GBLKSPL R1307 R1319 U1301D R1322 GFBK R1320 R1308 R1323 DRE[7..0] U1301A RESET A[19..1] RP1302 DRE1 DRE1 VGASEL MCKEXT DRE5 DRE5 GCLK GCLK GFBK DCKEXT DRE6 DRE6 GPEN GPEN GREF...
  • Page 22 31RAMA0 31RAMD15 MD15 U1201A 31RAMA1 31RAMD14 MD14 31RAMA2 31RAMD13 VR[7..0] SCL_S3V MD13 RP1201 31RAMA3 31RAMD12 SDA_S3V MD12 V33SW V33SW 31RAMA4 31RAMD11 MD11 R1201 R1202 U1201B 31RAMA5 31RAMD10 MD10 31RAMA6 31RAMD9 RP1202 R1204 31RAMA7 31RAMD8 R1205 31RAMA8 31RAMD7 R1206 31RAMA9 31RAMD6 R1207 31RAMA10 31RAMD5...
  • Page 23 R104 Audio DAC L101 U101 L1004 C1026 INPUT OUTPUT C102 C103 C101 SGND YPbPr_Pr YPbPr_Pr VGA R HD1_R/Pr HD1_R/Pr U102 YPbPr_Y YPbPr_Y C110 VGA G U1004 HD1_G/Y R102 HD1_G/Y I2S_DATA DATA AOUTR LRCK/L YPbPr_Pb C111 YPbPr_Pb VGA B HD1_B/Pb I2S_SCLK SCLK HD1_B/Pb I2S_LRCLK...
  • Page 24 A[19..1] ADR:0xA0/MEMORY U401 ADR:0xD0/COMPANION D3V3B ROMOEn ROMWEn RESETn RESET D3V3B R401 C401 BYTE R402 C418 C419 SW402 U402 D3V3B DQ10 DQ11 R404 R408 DQ12 SDA_H5V DQ13 DQ14 SCL_H5V R405 R407 DQ15 C406 L404 5Vstby RY/BY C402 L405 FLASH_8M L401 JP401 D3V3B C420 C417...
  • Page 25 For sumsung panel standard LVDS jack Formosa panel CPUGO R512 RELAY_ON# LVD33 L501 R503 TX0- LVD_PLL33 L504 CPUGO P_SDATA TX0+ P_SDATA JP501 R504 C520 C522 C524 C527 TX0- Formosa panel PDPGO R513 TX1- VS_ON# TX1+ R510 TX0+ L502 SCL_S3V LVD_VCC L505 PDPGO P_SCLK...
  • Page 26 U604 JP608 R630 D3V3B L606 D3V3# OUTPUT INPUT D605 D3V3# 5VSC OUTPUT INPUT C623 C614 C622 C613 L602 C621 RELAY_ON# C601 C603 U603 5Vstby# 5VSC D3V3C L607 L608 JP607 C618 R628 C624 C626 C625 C617 For SDI V3 HD Panel 2005.06.14 D3V3D L601...
  • Page 27 5V_E 5V_E 5V_E R748 R761 R765 R735 R705 V_TVCVBS V_SVideo_Y V_TVCVBS R745 G_SVideo_Y U702 G_SVideo_Y R734 TV_M C701 C703 V_SVideo_C GSEL Q733 Q734 Q735 R744 G_SVideo_C GYCbCr_Cb GYCbCr_Cr GYCbCr_Y G_SVideo_C ENABLE R733 C759 C762 C765 V_AVCVBS R703 C760 R749 C763 R763 C766 R767...
  • Page 28 Audio.Board.BH(M-CH).05.06.14.sch-1 - Tue Aug 16 22:15:14 2005 26／72...
  • Page 29 DUBHE OSD Ver1.1_NAKS.sch-1 - Mon Oct 18 11:47:11 2004 27／72...
  • Page 30 0025.sch-1 - Mon May 16 09:25:50 2005 28／72...

  • Page 31: Basic Operations & Circuit Description

    Basic Operations & Circuit Description MODULE There are 1 pc. panel and 12 pc.s PCB including 2 pc.s Y/Z Sustainer board, 2 pc.s Y Drive board, 6 pc.s X Extension boards, 1 pc. Control (Signal Input) and 1 pc. Power board in the Module.
  • Page 32 Internal Speaker Main Power Supply - Murata Y-Driver Top Sub Power Supply Y-Sustainer Hitachi part no. FPF29R-YSS0038 X-sustainer Hitachi part no. FPF29R-XSS0037 Y-Driver Bottom EMI filter AC inlet Intel Kep pad Audio PCB ESI part no. 771L421D01-01 Main Video PCB - ESI part no. 771E421D01-01 Logic PCB located under Main PCB - Hitachi part no.
  • Page 33 PCB function 1. Power: (1). Input voltage: AC 100V~120V, 45Hz~60Hz. Input range: AC 90V(Min)~265V(Max) auto regulation. (2). To provide power for PCBs. 2. Main (Video InterFace) board: To converter TV signals, S signals, AV signals, Y Pb/ Cb Pr/Cr signals, DVI signals and D-SUB signals to digital ones and to transmit to Control board.
  • Page 34 PCB failure analysis 1. CONTROL a. Abnormal noise on screen. b. No picture. 2. MAIN (video) : a. Lacking color, Bad color scale. b. No voice. c. No picture but with signals output, OSD and back light. d. Abnormal noise on screen. 3.
  • Page 35 Basic operation of Plasma Display 1. After turning on power switch, power board sends 5Vst-by Volt to Micro Processor 2. The micro Processor memorize the last state of Power, When the last state of power is on or receive power on signal from local Key or Remote control, Micro Processor will send on control signal to power.

  • Page 36: Main Ic Specifications

    Main IC Specifications - PW181 Image Processor, Scaler - PW1231 Digital Video Signal Processor - VPC 323XD Comb-filter Video Processor - Z86229 NTSC Line 21 CCD decorder - MSP34x0G Multistandard Sound Processor -AD9880 Analog/HDMI Dual Display Interface -PI5V330 Wideband/Video Quad 2-Channel MUX/DEMUX -SM5304AV Video Buffer with Built-in Analog LPF -TDA2616 2 X 12 W hi-fi audio power amplifier with mute -SAA5360 Multi page intelligent teletext decoder...

  • Page 37: General Description

    PW181 Product Specification General Description Video Input The PW181 ImageProcessor is a highly integrated Video Decoder Crystal “system-on-a-chip” that interfaces computer graphics and TV Tuner video inputs in virtually any format to a fixed-frequency flat Signal ADC/ panel display. TMDS Com puter Computer and video images from NTSC/PAL to WUXGA PW181...
  • Page 38 110 MSPS/140 MSPS Analog Interface for Flat Panel Displays AD9883A FEATURES FUNCTIONAL BLOCK DIAGRAM 140 MSPS Maximum Conversion Rate 300 MHz Analog Bandwidth 0.5 V to 1.0 V Analog Input Range CLAMP OUTA 500 ps p-p PLL Clock Jitter at 110 MSPS 3.3 V Power Supply Full Sync Processing CLAMP...
  • Page 39 PW1231A Product Specification General Crystal The PW1231A is a high-quality, digital video signal processor that incorporates Pixelworks’ patented deinterlacing, scaling, and video enhancement algorithms. The PW1231A accepts industry-standard PW1231A Digital Video Video video formats and resolutions, and converts the input into Decoder PW1231AL Output...
  • Page 40 Analog/HDMI Dual Display Interface AD9880 Preliminary Datasheet 3/26/2004 FEATURES Analog/HDMI Dual Interface Supports High-Bandwidth Digital Content Protection FUNCTIONAL BLOCK DIAGRAM RGB to YCbCr two-way color conversion Automated clamping level adjustment 1.8/3.3V Power Supply 100-pin LQFP Pb-Free Package Analog Interface RGB and YCbCr Output Formats R/G/B 8X3 R/G/B or YPbPr Clamp...
  • Page 41 VPC 323xD PRELIMINARY DATA SHEET Comb Filter Video Processor 1. Introduction The VPC 323xD is a high-quality, single-chip video – peaking, contrast, brightness, color saturation and front-end, which is targeted for 4:3 and 16:9, 50/60-Hz tint for RGB/ YC and CVBS/S-VHS and 100/120 Hz TV sets.
  • Page 42 4 ' . + / + 0 # 4 ; 4 1 & 7 % 6 2 ' % + ( + % # 6 + 1 0 < 0 6 5 % .   % % & & + 0 ' ' % 1 &...
  • Page 43 MSP 34x0G PRELIMINARY DATA SHEET Multistandard Sound Processor Family Current ICs have to perform adjustment procedures in order to achieve good stereo separation for BTSC and Release Note: Revision bars indicate significant EIA-J. The MSP 34x0G has optimum stereo perfor- changes to the previous edition.
  • Page 44 PI5V330 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 Low ON Resistance Wideband/Video Quad 2-Channel MUX/DEMUX...
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  • Page 51: Pin Configurations

    Features • Low-Voltage and Standard-Voltage Operation – 5.0 (V = 4.5V to 5.5V) – 2.7 (V = 2.7V to 5.5V) – 2.5 (V = 2.5V to 5.5V) – 1.8 (V = 1.8V to 5.5V) • Low-Power Devices (I = 2=µA @ 5.5V) Available •...
  • Page 52 Absolute Maximum Ratings* *NOTICE: Stresses beyond those listed under “Absolute Operating Temperature........-55°C to +125°C Maximum Ratings” may cause permanent dam- age to the device. This is a stress rating only and Storage Temperature ........-65°C to +150°C functional operation of the device at these or any Voltage on Any Pin other conditions beyond those indicated in the with Respect to Ground ........-1.0V to +7.0V...
  • Page 53 HT48R06A-1/HT48C06 8-Bit Cost-Effective I/O Type MCU Features · · Operating voltage: HALT function and wake-up feature reduce power =4MHz: 2.2V~5.5V consumption =8MHz: 3.3V~5.5V · Up to 0.5ms instruction cycle with 8MHz system clock · 13 bidirectional I/O lines at V ·...
  • Page 54 HT48R06A-1/HT48C06 Pin Assignment H T 4 8 R 0 6 A - 1 / H T 4 8 C 0 6 H T 4 8 R 0 6 A - 1 / H T 4 8 C 0 6 1 6 S S O P - A 1 8 D I P - A / S O P - A Pad Assignment HT48C06...
  • Page 55 HT48R06A-1/HT48C06 Pad Description Pad Name Options Description Bidirectional 8-bit input/output port. Each bit can be configured as wake-up Pull-high* input by options. Software instructions determine the CMOS output or PA0~PA7 Wake-up Schmitt trigger input with a pull-high resistor (determined by pull-high op- tions).
  • Page 56 HT48R06A-1/HT48C06 D.C. Characteristics Ta=25°C Test Conditions Symbol Parameter Min. Typ. Max. Unit Conditions ¾ ¾ =4MHz Operating Voltage ¾ ¾ =8MHz ¾ No load, f =4MHz Operating Current (Crystal OSC) ¾ ¾ No load, f =4MHz Operating Current (RC OSC) ¾...
  • Page 57 FHP A3 PANEL DATASHEET 55／72...
  • Page 58 FHP A3 PANEL DATASHEET 56／72...
  • Page 59 FHP A3 PANEL DATASHEET 57／72...
  • Page 60 FHP A3 PANEL DATASHEET 58／72...
  • Page 61 FHP A3 PANEL DATASHEET 59／72...
  • Page 62 FHP A3 PANEL DATASHEET 60／72...
  • Page 63 FHP A3 PANEL DATASHEET 61／72...
  • Page 64 FHP A3 PANEL DATASHEET 62／72...
  • Page 65 FHP A3 PANEL DATASHEET 63／72...
  • Page 66 FHP A3 PANEL DATASHEET 64／72...
  • Page 67 FHP A3 PANEL DATASHEET 65／72...
  • Page 68 FHP A3 PANEL DATASHEET 66／72...
  • Page 69 FHP A3 PANEL DATASHEET 67／72...

  • Page 70: Spare Part List

    Spare Part List for PDP4273M Date: 2006/01/05 Usage / Item Part Number Part Description Unit unit E6205-42BD01 42” ED PDP MODULE piece 900-420203-01B 42” GLASS FILTER piece SPK ASSY FOR 421D(4273M) 786-421D01-01 SILVER 771E421D01-01 MAIN PCBA 771L421D01-01 AUDIO PCBA E7801-081001...

  • Page 71: Spare Part List

    Spare Part List for PDP4273M Date: 2006/01/05 Usage / Item Part Number Part Description Unit unit E7501-052001 REMOTE CONTROL piece E7301-010002 AAA SIZE BATTERY pair 277-46SD01-03S FUNCTION KNOB piece 267-46SD01-01S POWER LENS piece 269-46SD01-01S REMOTE RECEIVE LENS piece 481-42D116-01S PCBA SHIELD BOX...

  • Page 73: If You Forget Your V-Chip Password

    If you forget your V-Chip Password - Omnipotence V-Chip Password: 5898. - Press MENU button. - Press Up, Down buttons to highlight "V-Chip" Control. - Press OK button to pop up "INPUT PASSWORD". - Use the Number buttons (0~9) to enter the omnipotence Password 5898. - Press Down to highlight "Password change"...
  • Page 74 Software upgrade Process - Power Switch OFF. - Connect the serial port of the control device to the RS-232 jack on the PDP back panel. RS-232C connection cables are not supplied with the PDP. - Power Switch ON. The power indicator on the front of the panel should now display red, means that the PDP is in standby mode.

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