Akai PDP4273M Service Manual
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Akai PDP4273M Service Manual

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  • Page 2: Table Of Contents

    SERVICE MANUAL Model: PDP4273M Safety Precaution.................1~2 Technical Specifications..............3~9 Circuit Diagram................10~30 Basic Operations & Circuit Description........31~35 Main IC Information...............36 Panel Information..............37~49 Spare Part List.................50~54 Exploded View................55 If you forget your V-Chip Password..........56 Software Upgrade..............57~60 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 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 PDP4273M ELECTRICAL CHARACTERISTICS Power Input 120VAC Voltage Input Current 3.5A <30 A (FOR AC 120V ONLY) Maximum Inrush Current Test condition Measured when switched off for at least 20 mins Frequency 60Hz(±3Hz) 330W Typical Power Consumption Test condition...
  • Page 7 Technical Specifications PDP4273M Audio input Audio Input(L/Rx5) 1 for DVI / D-Sub 2 for YPbPr 1 for S-Video 1 for AV Audio output Audio Output (L/Rx1) : Monitor out(L/R) SPDIF Coaxial x 1 (only for HDMI) Environment Operating environment 5º to 33°C 5.1.1 Temperature...
  • Page 8 Technical Specifications PDP4273M 6.11 Color temperature Contrast and Brightness at Normal; Color temperature set at Middle x=0.285±0.02 y=0.293±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 or down item in OSD menu.
  • Page 9 Technical Specifications PDP4273M 12. Remote Control Standby( ): Press this button to turn off to standby and turn on from standby. Mute( ): Press this button to quiet the sound system. Press again to reactivate the sound system. Number buttons: Use these buttons to enter the password.
  • Page 10 Technical Specifications PDP4273M 13. Support the Signal Mode A. VGA Mode Horizontal Vertical Resolution Frequency Frequency (KHz) (Hz) 31.50 60.00 640 x 480 37.86 72.81 35.16 56.25 37.90 60.32 800 x 600 46.90 75.00 48.08 72.19 1024 x 768 48.40 60.00...
  • Page 11 Technical Specifications PDP4273M PHYSICAL CHARACTERISTICS 14. Power Cord Length 1.8m nominal Type optional 15. Cabinet 15.1 Color “Black” colour as defined by colour plaque reference number 15.2 Weight 38.5 kg(with stand, speaker and handles) Net weight 45.0 kg Gross weight 15.3 Dimensions(w/o stand)
  • Page 12 UART0 (Communication with MT5351) Video[0...23] data audio signal 74LVC244A control signal From MT5351 U30-U33 (BUFFER) Video/audio signal control signal TMDS0~3 I2C(MT8202I2C) MT8293 HDMI Receiver HDMIPLUG_PWR HDMI (U25) LVDS Data TO PDP Connector HDMI_I2C Connector Control Signal MT8202 EEPROM UPA672T EEPROM 24C02 (U34) 24C04...

  • Page 13: Circuit Diagram

    Circuit Diagram - Main (Video) board - Keypad board - Remote control receiver board - External L/R Speakers board - Remote control board 11／60...
  • Page 14 LVDSVDD LVDSGND 2,3,4 9,14 9,14 URST# URST# MT8202E (PBGA388) LCDTV BOARD 4 LAYERS FOR AKAI 8202UP3_1 8202UP3_1 GPIO2 GPIO2 3,12 GPIO4 GPIO4 GPIO14 GPIO14 3,13 GPIO19 GPIO19 3,13 7,9,14 12,13 1. INDEX / POWER / RESET / EEPROM FB42 FB42...
  • Page 15 SB33B Power ON alive source 100uF/16v 100uF/16v 0.1uF 0.1uF AZ1117-3.3V AZ1117-3.3V SB33 SB33A SB18A 5VSB AZ1117/adj AZ1117/adj LVDS_GND LVDS_GND 3,4,12 SB33A SB18 SB18A VFE_GND VFE_GND 3,4,8,11 R773 R773 CE79 CE79 100uF/16v 100uF/16v 100uF/16v 100uF/16v CE78 CE78 CB10 CB10 0.1uF 0.1uF 100uF/16v 100uF/16v 0.1uF...
  • Page 16 SB33B TP23 TP23 820k 820k TP43 TP43 SB33B XTALI XTALO 27MHz 27MHz 22pF 22pF 27pF 27pF LVDS_GND AP[0..7] AP[0..7] AN[0..6] AN[0..6] CLK1+ CLK1+ AUDIO_GND RS-232 CLK1- CLK1- AUDIO_GND 4,10 AADCVSS 4x1 W/HOUSING 4x1 W/HOUSING AADCVSS 4,10 LVDS_GND PLLVDD1 DIP4/W/H/P2.0 DIP4/W/H/P2.0 LVDS_GND 2,4,12 PLLVDD1...
  • Page 17 STANDBY ANALOG POWER NORMAL ANALOG POWER ASB18A ASB18A XTALVDD XTALVDD XTALVDD PLLVDD1 ADCVDD ADCVDD AVICM CB26 CB26 CE24 CE24 CB27 CB27 AVICM 10uF/10V 10uF/10V 4.7uF 4.7uF 0.1uF 0.1uF 4.7uF 4.7uF 0.1uF 0.1uF PWM2VREF PWM2VREF LVDS_GND LVDS_GND LVDS_GND DACFS DACFS PLLVDD2 LVDDA ASB33A LVDDA...
  • Page 18 IOA1 F_D0 DV25B DV25B D1V25 IOA2 F_D1 A_RA3 D_RA3 IOA3 F_D2 A_RA2 D_RA2 IOA4 F_D3 A_RA1 D_RA1 D_RA3 IOA5 F_D4 A_RA0 D_RA0 D_DQ0 D_DQ15 D_RA2 IOA6 F_D5 DQ15 D_RA1 IOA7 F_D6 VDDQ VSSQ 22x4 22x4 D_DQ1 D_DQ14 D_RA0 F_A8 F_D7 DQ14 A_RA6 D_RA6...
  • Page 19 AVCC AZ1117-1.8 AZ1117-1.8 DV33B DV33B AVCC VCC18 VI[0..23] CE609 CE609 VI[0..23] HDMICEN CB210 CB210 HDMICEN CE610 CE610 C611 C611 CE611 CE611 CE612 CE612 1000pF 1000pF HDMIODCK 10uF/16v 10uF/16v 0.1uF 0.1uF CB211 CB211 DIODE EGA-0603 DIODE EGA-0603 HDMIODCK HDMIDE 100uF/16v 100uF/16v 47uF/16v 47uF/16v 0.1uF...
  • Page 20 TXD:MT5351 Transmit RXD:MT5351 Receiver SB33B HDMIMCLK TXD1:MT5351& MT8205 Communication HDMIMCLK HDMIBCLK RXD1:MT5351& MT8205 Communication HDMIBCLK HDMILRCK HDMILRCK HDMISD0 R354 R354 0/NC 0/NC HDMISD0 R355 R355 0/NC 0/NC HDMIDE change 2/16 TXD1 R356 R356 HDMIDE HDMIODCK RXD1 R357 R357 HDMIODCK HDMIHSYNC DV33B HDMIHSYNC HDMIVSYNC...
  • Page 21 INPUT SWV9 ADC_IN0 ADC_IN0 CCIR_V0 CCIR_V0 CCIR_V5 R372 R372 CCIR_V5 CCIR_V7 100k 100k CCIR_V7 CE115 CE115 GPIO11 GPIO11 GPIO15 DV33B AV1_R GPIO15 GPIO16 GPIO16 GPIO17 0/NC 0/NC SWV9 GPIO17 22uF/25v 22uF/25v GPIO18 100k 100k GPIO18 VFE_GND SB33B R373 R373 VFE_GND 2,3,4,11 AADCVSS AADCVSS...
  • Page 22 CE119 CE119 AV_R 10uF/25v 10uF/25v R398 R398 HPVDD AV_L CE120 CE120 R399 R399 10uF/25v 10uF/25v C181 C181 CB63 CB63 0.1uF 0.1uF YPBPR3_R CE121 CE121 10uF/25v 10uF/25v R400 R400 INPUT 10uF/25v 10uF/25v SCL_8202 R401 R401 SCL14 SCL_8202 YPBPR3_L CE122 CE122 10uF/25v 10uF/25v R402 R402...
  • Page 23 CVBS0 CVBS0 CVBS1 CVBS1 CVBS2 CVBS2 THIS PAGE NEARLY IC C112 C112 4.7nF 4.7nF SOY0 CVBS_0 R197 R197 C110 C110 47nF 47nF CVBS0 C113 C113 330pF 330pF PB0+ R199 R199 C115 C115 100nF 100nF PB0+ PB0- PB0- PR0+ TV_GND PR0+ PR0- C116 C116...
  • Page 24 NEARLY 8202 NEARLY VGA CON RED+ RED+ VGA IN RED- RED- GREEN+ GREEN+ GREEN- GREEN- BLUE+ BLUE+ BLUE- BLUE- R435 R435 R132 R132 10nF 10nF RED+ VGASOG VGASOG VGAHSYNC# VGAHSYNC# D-SUB15 FEMALE D-SUB15 FEMALE VGAVSYNC# VGAVSYNC# DSUB15/DIP/F DSUB15/DIP/F 0/NC 0/NC R729 R729 DIODE SMD BAV99...
  • Page 25 GPIO0 GPIO0 GPIO2 GPIO2 CLK1+ CLK1+ CLK1- CLK1- AP[0..7] AP[0..7] AN[0..6] AN[0..6] LVDS_GND LVDS_GND 2,3,4 LVDSVDD 5VSB SB33B LVDSGND 2,3,4 CCIR_VCLK CCIR_VCLK CCIR_V4 CCIR_V4 LVDS OUT(Include PDP and 32' LCD LVDS interface) FCLK FCLK FCMD FCMD FDAT FDAT SCL_8202 SCL_8202 3,6,9 SDA_8202 CPUGO /PDPGO :INPUT TO PDP...
  • Page 26 3,15 GPIO10 GPIO10 SB33B GPIO12 KEYPAD GPIO12 GPIO13 GPIO13 5VSB SB33B GPIO14 R384 R384 R385 R385 R386 R386 R387 R387 R388 R388 R389 R389 GPIO14 PWM0 PWM0 R657 R657 PWM1 PWM1 R0603/SMD R0603/SMD 1000pF 1000pF TV/AV 8202UP3_0 GPIO12 TV/AV 1000pF 1000pF MENU 8202UP3_0...
  • Page 27 CVBS_0 CVBS_0 TV_GND TV_GND FQ1216 : PAL ADDRESS ADC_IN4 FQ1236 : NTSC TUNER ADC_IN4 SIF_9V 1,7,9 TUNER SIF1NTSC 4.5MHz BPF CE617 CE617 10uF/25v 10uF/25v R423 R423 FQ1236-MK3 FQ1236-MK3 C10UF25V/D4H5 C10UF25V/D4H5 R422 R422 1.8K 1.8K C645 10nF C645 10nF 1000pF/27pF 1000pF/27pF C646 C646 R418...
  • Page 28 GPIO1 GPIO1 3,13 SY_1 SY_1 AV1_R AV1_R SY_1_GND AV /YC VIDEO IN AV /YC AUDIO IN SY_1_GND DIODE SMD BAV99 DIODE SMD BAV99 SC_1 SC_1 AV1_IN 1.8uH 1.8uH R113 R113 CVBS_1 AV2_IN 1.8uH 1.8uH R125 R125 CVBS_2 R240 R240 SC_1_GND SC_1_GND SY_L 1.5K...
  • Page 29 AOSDATA2 GPIO DECRIPTION AOSDATA2 AOMCLK AOMCLK AOBCLK UP3_4 : SW SCL AOBCLK AOLRCK AOLRCK UP3_5 : SW SDA SPOUTR SPOUTR AUSPR ERO0/UP3_0 :KEYPAD POWER AUSPR AUSPL AUSPL OPOUTR ERO1/UP3_1 : MAIN POWER SWITCH OPOUTR OPOUTL OPOUTL A_MUTE VCLK : KEPAD CH+ A_MUTE 9,17 AOSDATA2...
  • Page 30 GPIO8 GPIO8 GPIO9 GPIO9 AUSPR AUSPR 9,16 AUSPL AUSPL 9,16 A_MUTE A_MUTE OPOUTR OPOUTR OPOUTL OPOUTL R2S15103 R2S15103 2200uF/35v 2200uF/35v R193 150K R193 150K C662 3pF C662 3pF CE166 CE166 OPOUTL 2.2uF/25v 2.2uF/25v CE161 CE161 R183 R183 LOUT PWM1 ACM3225-102-2P ACM3225-102-2P INTL OPOUTR...
  • Page 31 Keypad Remote control receiver External L/R Speakers 29／60...
  • Page 32 Remote control 30／60...

  • Page 33: Basic Operations & Circuit Description

    Basic Operations & Circuit Description MODULE There are 1 pcs panel and 9 pcs PCB including 2 pcs X/Y Sustainer board, 1 pcs XBUS board, 1 pcs SDM-U board, 1 pcs SDM-D board, 2 pcs ABUS (L and R) board, 1 pcs Logic (Signal Input) board, and 1 pcs PSU board in the Module.
  • Page 34 Parts position Sub PSU SDM-U XSUS YSUS XBUS External Speaker SDM-D Terminal Power Switch EMI Filter + AC Inlet Main Keypad and (Logic, behind remote control the Main Board) ABUS-L ABUS-R receiver 32／60...
  • Page 35 Basic operation of Plasma Display 1. After turning on power switch, PSU board sends 5Vst-by Volt to Main IC MT8202 waiting for ON signals from Key Switch or Remote Receiver. 2. When the ON signal from Key Switch or Remote Receiver is detected, MT8202 will send ON Control signals to Power.
  • Page 36 PCB function 1. PSU and Sub PSU: (1). Input voltage: AC 120V, 60Hz. (2). To provide power for PCBs. 2. Main board: To converter S signals, AV signals, Y Pb/Cb Pr/Cr signals, HDMI signals and D-SUB signals to digital ones and to transmit to Control board. 3.
  • Page 37 PCB failure analysis 1. LOGIC: a. Abnormal noise on screen. b. No picture. 2. MAIN : a. Lacking color, Bad color scale. b. No voice. c. No picture but with signals output and OSD. d. Abnormal noise on screen. 3. PSU and Sub PSU: No picture, no power output. 4.

  • Page 38: Main Ic Information

    Main IC Information - M13S128168A (ESMT) 2M x 16 Bit x 4 Banks Double Data Rate SDRAM - MT8202 MT8202G is a highly integrated Single-Chip for LCD TV supporting video input and output format up to HDTV. It includes 3D comb filter TV decoder to retrieve the best image from popular composite signals.

  • Page 39: Panel Information

    Panel Information FHP A3 PANEL DATASHEET 37／60...
  • Page 40 FHP A3 PANEL DATASHEET 38／60...
  • Page 41 FHP A3 PANEL DATASHEET 39／60...
  • Page 42 FHP A3 PANEL DATASHEET 40／60...
  • Page 43 FHP A3 PANEL DATASHEET 41／60...
  • Page 44 FHP A3 PANEL DATASHEET 42／60...
  • Page 45 FHP A3 PANEL DATASHEET 43／60...
  • Page 46 FHP A3 PANEL DATASHEET 44／60...
  • Page 47 FHP A3 PANEL DATASHEET 45／60...
  • Page 48 FHP A3 PANEL DATASHEET 46／60...
  • Page 49 FHP A3 PANEL DATASHEET 47／60...
  • Page 50 FHP A3 PANEL DATASHEET 48／60...
  • Page 51 FHP A3 PANEL DATASHEET 49／60...

  • Page 52: Spare Part List

    PDP4273M (S-MT8202) FHP PANEL USA K(QIAN SE) 2> 518-421D01-01K BOTTOM BOX 421D K 1.000000 Piece 3> 580-421D1A-02APA IB E FOR AKAI PDP4273M+PIP 1.000000 Piece FHP (A3) (S-MTK8202) USA QIANSE 4> E7501-056001 REMOTE CONTROL K001 "AKAI" 1.000000 34KEYS MT8202 PDP MONITOR USA BLACK 5>...

  • Page 53: Spare Part List

    Piece 21> 384-42D103-SMU06H PVC SHEET FOR TERMINAL (S- 1.000000 Piece MT8202) W/O INFRARED TERMINAL USA H 22> 387-421D01-03AHA MODEL PLATE AKAI ENG 1.000000 Piece PDP4273M (S-MTK8202) FHP PANEL USA H (V:JIALI) 23> 388-42D103-01H CAUTION PLATE ENG 42D1 H 1.000000 Piece 24>...
  • Page 54 Piece 52> 568-P46T02-02 WARNING LB ENG 42SF NIL 1.000000 Piece 53> 579-421D01-01 BAR CODE LABEL (W/SERIAL NO) 2.000000 Piece ENG PDP4273M USA 54> 579-42D102-09 SERIAL NO/BAR CODE LABEL 1.000000 Piece 42D1 55> 579-42D103-02 ON/OFF LB ENG 42D1 NIL 1.000000 Piece 56>...
  • Page 55 PDP4273M Spare Part List 58> 590-421D01-01 WARRANTY CARD AKAI ENG 1.000000 Piece PDP4273M USA 59> 593-421D01-10APA AKAI INSERTION CARD ENG 1.000000 Piece PDP4273M(S-MT8202) USA P (QIAN SE) 60> 734-BM1501-01 SECC STAND BASE 421D (COST 1.000000 DOWN) W/O PACKING SILVER 61>...
  • Page 56 100/240A MURATA 79> E7801-P01501 PCB ASSY PSU PDP 5V/9V/24V 1.000000 FOR (FHP) MT8202 MEGMEET 80> 771B421D01-01 IR RECEIVE PCB ASSY FOR 1.000000 PDP4273M 81> 771K421D01-01 KEY PCB ASSY FOR PDP4273M 1.000000 82> 786-421D01-01 SPK ASSY FOR 421D(4273M) 1.000000 SILVER 54／60...
  • Page 57 5５／60...

  • Page 58: If You Forget Your V-Chip Password

    If you forget your V-Chip Password - Omnipotence V-Chip Password: 8202. Using the “Change Password” item When enter the “V-Chip” menu, select “Change Password”. Press ▲ or ▼ button to highlight the “Change Password” item. Press Enter button to confirm and pop up a menu. Use 0~9 buttons input the omnipotence password(8202), then Press Enter button to enter and pop up a menu.

  • Page 59: Software Upgrade

    Software Upgrade Process of update MT8202 Preparing : 1． Connect RS232-VGA download line, One connector is connected to VGA connect port of Plasma TV ,while another side is connected to PC COM port. 2． Store the MtkTool into the PC . Downloading : 3．...
  • Page 60 6． Choose the bit rate as 115200. 7． Select the update binary by pressing browse button. For exemple,the binary file name is (this update firmware will be sent to your side) PDP4210EA1_V09.bin. 8． Press Upgrade button and start update process. 58／60...
  • Page 61 9． The update process is successful as the progress bar is 100%. After the update process is ok, 59／60...
  • Page 62 turn off power and wait indicator light is off. Turn on power and TV can work. Checking It is needed to check the version of the firmware for MT8202 which has been download into the Plasma TV . Press Menu button of the remote control，following input “8202”of the remote control and OSD menu for Factory Setting is appeared on the screen .

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