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Akai LCT42Z7TAP Service Manual
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Akai LCT42Z7TAP Service Manual

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  • Page 2 AKAI SERVICE MANUAL Model: LCT42Z7TAP 1. Safety Instructions………………...………………………………………………….1~2 2. Trouble Shooting manual of LCD…………………………………………………….3~5 3. Product Specification………………………………………………………………….6~8 4. Block Diagram….…………………………………………………………………….9 5. Circuit diagram……………………………………………………………………….10~34 6. Basic Operation & Circuit Description………………………………………………35~36 7. Main IC Information…………………………………………………………………37~76 8. Panel Information……………………………………………………………………77~105 9. Explored View………………………………………………………………………106 10. Spare Pare List………………………………………………………………………107~110 11.
  • Page 3 I. Safety Instructions The l ig h tn i ng fla sh w i th arro wh e ad symb ol , within an equilatera l triangle, is intended to alert CAUTION the user to the presence of uninsulated “ dangerous voltage”...
  • Page 4 PRODUCT SAFETY NOTICE 4. Completely discharge the high pote ntial voltage of the picture tube before handli ng. The pi cture tube is a Many e lectrical an d mechanica l parts in this TV vacuum and if bro ken, the gl ass will explode. receiver have special safety-related characteristics.
  • Page 5 Product Specification Product Model LCT42Z7TAP TV System NTSC M, ATSC VIDEO System NTSC Screen Size 42” diagonal Display Area 930mm (W) x 523mm (H) Aspect Ratio 16:9 External Size (with stand) 1067.3mm (W) x 781.2mm (H) x 275.0mm (D) Gross Weight (with stand)
  • Page 6 Remote Control (Note: Details refer to AKAI TV Universal Remote Control Programming Guide.)   S tandby( ): Press to turn on and off.     Mute( ): Press this button to quiet the sound. Press again to reactivate the sound.
  • Page 7 8. 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 B. YPbPr Mode Horizontal Vertical Resolution...
  • Page 8 1.Do not power on . 1.1 Please check AC cable if connect to AC plug. Is true the connector don’t connect to AC plug. Please connect it. 2.2 Please check AC cable if connect to AC power. Is true the AC cable don’t connect to AC power. Please connect it. 3.3 Please check power board of fuse if broken.
  • Page 9 3.The power is normal work ,but don’t backlight. 3.1 The indicator light work normal (green light ). Please check Main board of transistor Q18 collect if not has +5v voltage. Is true Q18 collect hasn’t +5v ,To check Q18 if fail. Or to check Q18 of base if not low. (Low is working, high don’t work).
  • Page 10 +5v voltage ,It’s fail. It’s low (close 0 v) working. The circuit diagram follow down: Please refer to attached sheet A circuit diagram. 5.The remote control don’t be control. 6.1 The check batteries of remote control if it run out of . 6.2 To check main board of connecter J21 of wire connect fastness and the connecter of wire open.
  • Page 11 POWER BOARD Flash Optical 32mb Output 256M Standby 5V MT5351 MPEG Decoder TD1336 X6965D MT5111 Digital Tuner SAW Filter 256M DTV Demodulator 24VA (For Class D) 24V (For LCD Panel) DTV BOARD MAIN BOARD HDMI 74L VC245A X4 MT8293 24 bit RGB Switch HDMI Receiver Analog Tuner...
  • Page 12 LVDSVDD LVDSGND 2,3,4 9,14 9,14 URST# MT8202E (PBGA388) LCDTV BOARD 4 LAYERS FOR AKAI URST# 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 13 SB33B Power ON alive source 100uF/16v 100uF/16v 0.1uF 0.1uF AZ1117-3.3V AZ1117-3.3V SB33 SB33A SB18A AZ1117/adj AZ1117/adj 5VSB LVDS_GND LVDS_GND 3,4,12 SB33A SB18 SB18A VFE_GND VFE_GND 3,4,8,11 R773 R773 CE79 CE79 CE78 CE78 100uF/16v 100uF/16v 100uF/16v 100uF/16v CB10 CB10 0.1uF 0.1uF 100uF/16v 100uF/16v 0.1uF...
  • Page 14 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 CLK1- RS-232 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 15 STANDBY ANALOG POWER NORMAL ANALOG POWER ASB18A ASB18A XTALVDD XTALVDD XTALVDD PLLVDD1 ADCVDD ADCVDD AVICM CB26 CB26 CE24 CE24 CB27 CB27 AVICM 4.7uF 4.7uF 0.1uF 0.1uF 10uF/10V 10uF/10V 4.7uF 4.7uF 0.1uF 0.1uF PWM2VREF PWM2VREF LVDS_GND LVDS_GND LVDS_GND DACFS DACFS PLLVDD2 LVDDA ASB33A LVDDA...
  • Page 16 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 17 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 HDMIODCK 1000pF 1000pF 10uF/16v 10uF/16v 0.1uF 0.1uF CB211 CB211 DIODE EGA-0603 DIODE EGA-0603 HDMIODCK 0.1uF 0.1uF HDMIDE 100uF/16v 100uF/16v 47uF/16v...
  • Page 18 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 19 SWV9 INPUT 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 20 CE119 CE119 AV_R HPVDD 10uF/25v 10uF/25v R398 R398 AV_L CE120 CE120 R399 R399 10uF/25v 10uF/25v C181 C181 CB63 CB63 YPBPR3_R CE121 CE121 10uF/25v 10uF/25v R400 R400 0.1uF 0.1uF 10uF/25v 10uF/25v SCL_8202 R401 R401 SCL14 SCL_8202 INPUT YPBPR3_L CE122 CE122 10uF/25v 10uF/25v R402 R402...
  • Page 21 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 22 NEARLY 8202 NEARLY VGA CON RED+ RED+ VGA IN RED- RED- GREEN+ GREEN+ GREEN- GREEN- BLUE+ BLUE+ BLUE- RED+ BLUE- R435 R435 R132 R132 10nF 10nF 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 23 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 24 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 25 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 26 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 SY_0...
  • Page 27 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 28 GPIO8 GPIO8 GPIO9 GPIO9 AUSPR AUSPR 9,16 AUSPL AUSPL 9,16 A_MUTE A_MUTE OPOUTR OPOUTR OPOUTL OPOUTL R2S15102NP R2S15102NP 1000uF/35v 1000uF/35v R193 150K R193 150K C662 3pF C662 3pF CE166 CE166 OPOUTL 2.2uF/50v 2.2uF/50v CE168 CE168 R184 R184 LOUT PWM1 INTL ACM3225-102-2P ACM3225-102-2P 2.2uF/50v...
  • Page 29 MT5351RA-V2 MT5111 / MT5351 REFERENCE DESIGN - 4 LAYERS BEAD/SMD/1206 +12V CB142 220uF/16v 0.1uF History DATE C220UF16V/D6H11 C0603/SMD RA-V1 INITIAL VERSION 2005/06/15 +12V +12V BEAD/SMD/1206 RA-V2 ADDED AUDIO SWITCH / REFINE POWER CIRCUIT 2005/07/14 DV33 2,5,6,8 DV33 220uF/16v 8x1 W/HOUSING DIP8/W/H/P2.54 C220UF16V/D6H11 2,3,4,5,6,7,8...
  • Page 30 BEAD/SMD/0805 DV33 +12V +5V_TUNER BEAD/SMD/0805 220uF/16v 0.1uF 220uF/16v AZ1117/adj 0.1uF +12V +12V +5V_TUNER C220UF16V/D6H11 C0603/SMD SOT223/SMD R0603/SMD C220UF16V/D6H11 C0603/SMD BEAD/SMD/0805 DV33 VOUT 1,5,6,8 DV33 220uF/16v 0.1uF 220uF/16v 0.1uF +5V_TUNER CB157 +5V_TUNER C220UF16V/D6H11 C0603/SMD C220UF16V/D6H11 C0603/SMD CE32 0.1uF DV33_DM DV33_DM AP1084/TO220-DIP/5V 220uF/16v DV18 DV18...
  • Page 31 +5V_TUNER CB17 BEAD/SMD/0805 +5V_TUNER CE17 0.1uF 10uF/16v C0603/SMD C10UF16V/D5H11 Outdoor PS VS_splitter_+5V OOB_OP RF_AGC R0603/SMD R0603/SMD R0603/SMD R0603/SMD TUNER_SCLO R0603/SMD TUNER_SDAO +5V_TUNER VS_Tuner_+5V Broad_IF_OP IF_AGC CB18 BEAD/SMD/0805 CE18 Narrow_IF_OP1 0.1uF 10uF/16v Narrow_IF_OP2 C0603/SMD C10UF16V/D5H11 IF_AGC 4.7K R0603/SMD PORT TUNER TD1336/FGHP 10nF C0603/SMD +5V_TUNER...
  • Page 32 +5V_TUNER +5V_TUNER DV33_DM DV33_DM DV18 DV18 1,2,3,5,6,7,8 ORESET# 1,5,8 ORESET# DVDD33 GLOBAL SIGNAL MT5111_RF_AGC R F_AGC R F_AGC R F_AGC R F_AGC RF_AGC IF_AGC IF_AGC R0603/SMD 47nF C0603/SMD 2nd_IF+ 2nd_IF+ 2nd_IF- 2nd_IF- MT5111_IF_AGC IF_AGC IF_AGC IF_AGC IF_AGC IF_AGC IF_AGC TUNER_SCLO TUNER_SCLO TUNER_SDAO TUNER_SDAO...
  • Page 33 IOR_Y6 TP/SMD/D1.0 IOB_Y5 TP/SMD/D1.0 IOG_Y4 TP/SMD/D1.0 DV33 1,2,6,8 DV33 DV25 2,6,7 DV25 DV12 DV12 1,2,3,4,6,7,8 DV12 ORESET# 1,4,8 ORESET# REQUEST# REQUEST# READY# READY# OSDA0 OSDA0 OSCL0 OSCL0 OPWM0 OPWM0 DV33 OXTALI OXTALI OXTALO OXTALO POWE# IOVDD POWE# POCE0# VCXO0 IOVDD POCE0# VCXO0 POOE0#...
  • Page 34 NS/560 R0603/SMD NS/10M R0603/SMD DV33 U2CTS OXTALI OXTALO CB42 NS/10 0.1uF R0603/SMD NS/27MHz C0603/SMD AV33 AV33 CRYS/DIP/SMD OSC1 CAPVPLL CAPVGND APLLCAP1 APLLCAP0 DV33 NS/74.25MHz 1,2,5,8 DV33 TP/SMD/D1.0 NS/20pF NS/20pF AV33 OSC/SMD/A AV33 C0603/SMD C0603/SMD 5600pF DV25 2,5,7 DV25 C0603/SMD 1500pF 1500pF NS/50 NS/50...
  • Page 35 +1V25_DDR +1V25_DDR DV25 DV25 DV25 DV25 RWE# RN14 22x4 MEM_WE# MEM_ADDR5 RN15 75x4 RDQ0 RN16 47x4 MEM_DQ0 RN17 75x4 R CAS# MEM_CAS# MEM_ADDR4 RDQ1 MEM_DQ1 RCS# MEM_CS# MEM_ADDR13 RDQ2 MEM_DQ2 RBA0 MEM_BA0 MEM_WE# RDQ3 MEM_DQ3 RA10 RN18 22x4 MEM_ADDR10 MEM_ADDR10 RN19 75x4 RDQ4...
  • Page 36 PDA1 PDD0 PDA2 PDD1 PDA3 PDD2 DV33 DV33 1,2,6 PDA4 PDD3 DV33 1,2,5,6 DV33 PDA5 PDD4 PDA6 PDD5 1,2,3,4,5,6,7 PDA7 PDD6 PDA8 PDD7 NS/4.7K NS/4.7K R0603/SMD R0603/SMD PDA9 ORESET# 1,4,5 ORESET# PDA10 PDA0 PDA1 PDA2 PDA11 GLOBAL SIGNAL PDA12 PDA13 ORESET# NS/4.7K PDA14...
  • Page 37 Basic Operations & Circuit Description MODULE There are 1 pcs panel and 5 pcs PCB including 3 pcs Extension PCB, 1 pcs Timming controller board and 1 pcs Back Light board in the Module. There are 6 pcs PCBs including 1 pcs ATV Tuner board, 1 pcs keypad board, 1 pcs Remote Control Receiver board, 2 pcs L/R Speakers and 1 pcs Main(Video)board, 1 pcs ATSC board in the SET.
  • Page 38 PCB funtion 1. Power : (1). Input voltage: AC 120V, 60Hz. (2). To provide power for PCBs. 2. Main board : To converter TV signals, S signals, AV signals, Y Pb/Cb Pr/Cr signals, DVI/HDMI signals and D-SUB signals to digital ones and to transmit to Control board. 3.
  • Page 39 PCB failure analysis 1. CONTROL : a. Abnormal noise on screen. b. No picture. 2. MAIN : a. Lacking color, Bad color scale. b. No voice. (Make sure status: Mute / Internal, External speaker) c. No picture but with signals output, OSD and back light. d.
  • Page 40 Main IC Specifications - M13S128168A ( ESMT ) 2M x 16 Bit x 4 Banks Double Data Rate SDRAW - MT5111CE Single-Chip HDTV/CATV Demodulator - MT8206 MT8206 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.
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  • Page 49 MT8206 PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE T8206 is a highly integrated single chip for LCD Video Processor TV supporting video input and output format up to Fully 10-bit processing to enhance the video HDTV. It includes 3D comb filter TV decoder to quality retrieve the best image from popular composite Advanced flesh tone and color processing...
  • Page 50 MT8206 PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE 65535/256/16/4/2-color bitmap format OSD, DRAM Controller Automatic vertical scrolling of OSD image Supports up to 32M-byte SDR/DDR DRAM Support OSD mirror and upside down Supports 2x16 bit SDR/DDR bus interfaces Build in a DRAM interface programmable clock to Host Micro controller optimize the DRAM performance...
  • Page 51 MT8206 PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE BLOCK DIGRAM Analog Switch Analog switches are built in MT8206 to connect to 17 input signals and there is need to add external components to add analog video multiplexes on board. There are 9 high-speed differential input pairs for 3 sets of YPRPB/VGA input signals.
  • Page 52 MT8206 PRELIMINARY, SUBJECT TO CHANGE WITHOUT NOTICE MTK CONFIDENTIAL, NO DISCLOSURE DSP handle audio decoding as well as computing intensive jobs. The downloadable micro code enables fast function convergence for various audio standards in the world. Advanced DSP engine supports full functions of sound effects. Support Dolby Surround and WOW SRS MDDi/Scaler MDDi is MTK proprietary de-interlacing technology.
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  • Page 66 Digital Power Amplifier R2S15102NP 10Wx2ch(SE)/20Wx1ch(BTL) Digital Audio Power Amplifier 1.Outline   R2S15102NP is a Digital Power Amplifier IC developed for TV.   R2S15102NP can realize maximum Power 10W × 2ch Ｆｉｇ．１ Package (VD = 24V,THD = 10%, SE) at 8 Ω load.   It is possible to replace from the conventional analog amplifier ２０...
  • Page 67 Digital Power Amplifier R2S15102NP ５．Pin Configuration(Table.1) NAME Description Power Output pin #1 OUT1 Power supply pin for power output stage #2 − Stand-by control pin. When this is “L”, circuit current is STBYL reduced.There is the pull-down resistor:50Kohm(typ.). PWM input pin #1 ( for phase compensation) PWM1 Analog input #1.
  • Page 68 Digital Power Amplifier R2S15102NP ６．Absolute Maximum Rating(Table.2) Symbol Parameter Condition Value Unit VD max Maximum VD Voltage VD1,VD2 pin volta HB max Maximum HB Voltage HB1、HB2 pin voltage Power dispassion Ta = 25°C :See Fig.3 Thermal Resistance See Fig.3 θja ℃/W ximum Temperature Junction temperature...
  • Page 69 Digital Power Amplifier R2S15102NP Consideration about the PCB design The Power dispassion at 10Wx2ch(SE) or 20Wx1ch(BTL) is estimated almost 2W. It has enough margin, designing the PCB at θja=30℃/W. (1)PCB basic design (copper plane) <the best design : 4 layer PCB> GND plane Power plane thermal via <PCB size estimation >...
  • Page 70 Digital Power Amplifier R2S15102NP ７．Recommended Operating condition(Table.3) Symbol Parameter Condition Unit Supply Voltage VD1,VD2 pin voltage YL、MUTEL Control voltage of high level Control voltage of low level STBYL、MUTEL fosc Carrier Frequency R= 33ｋΩ (note) ・ STBYL: High level:normal operation Low level:Stand-by ・...
  • Page 71 Digital Power Amplifier R2S15102NP (note) “R for GND” ‘s are ９．Application Examples for the evaluation only and not needed actually. Fig.4  SE operation mode(10Wx2ch) 0.1u 1000u VD=+11〜25V 0.047u 0.1u 0.1u 20 19 Vz=27〜３０V 15uH Vz=27〜３０V 15uH 330u 330u OUT1 OUT2 Exposed 8Ω 8Ω...
  • Page 72 Digital Power Amplifier R2S15102NP (note) Fig.6  BTL operation mode(20W)  “R for GND” ‘s are for the evaluation only and with PWM direct input not needed actually. 8Ω 0.1u 1000u VD=+11〜25V 0.047u 0.1u 0.1u 20 19 Vz=27〜３０V 15uH Vz=27〜３０V 15uH BTL Configuration OUT1 OUT2 Exposed Die Pad 0.1u 0.1u R2S15102...
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  • Page 79 LC420WU1 Liquid Crystal Display Product Specification SPECIFICATION APPROVAL ( ● Preliminary Specification ) Final Specification Title 42.0” WUXGA TFT LCD 77／128...
  • Page 80 LC420WU1 Liquid Crystal Display Product Specification 1. General Description The LC420WU1 is a Color Active Matrix Liquid Crystal Display with an integral Cold Cathode Fluorescent Lamp(CCFL) backlight system. The matrix employs a-Si Thin Film Transistor as the active element. It is a transmissive display type which is operating in the normally black mode. It has a 42.02 inch diagonally measured active display area with WUXGA resolution (1080 vertical by 1920 horizontal pixel array).
  • Page 81 LC420WU1 Liquid Crystal Display Product Specification 2. Absolute Maximum Ratings The following items are maximum values which, if exceeded, may cause faulty operation or damage to the LCD module. Table 1. ABSOLUTE MAXIMUM RATINGS Value Parameter Symbol Unit Remark at 25 ± 2 °C -0.3 +14.0 Power Input...
  • Page 82 LC420WU1 Liquid Crystal Display Product Specification 3. Electrical Specifications 3-1. Electrical Characteristics It requires two power inputs. One is employed to power for the LCD circuit. The other Is used for the CCFL backlight and inverter circuit. Table 2. ELECTRICAL CHARACTERISTICS Value Parameter Symbol...
  • Page 83 LC420WU1 Liquid Crystal Display Product Specification Table 3. ELECTRICAL CHARACTERISTICS (Continue) Value Parameter Symbol Unit Note Inverter : Power Input Voltage 22.8 24.0 25.2 Power Supply Input Voltage Ripple Vp-p Operating Power Input Current Turn On Power Consumption Brightness Adjust Input Voltage for Control System V on...
  • Page 84 LC420WU1 Liquid Crystal Display Product Specification 3-2. Interface Connections This LCD module employs two kinds of interface connection, a 51-pin connector is used for the module electronics and two 12-pin connectors are used for the integral backlight system. 3-2-1. LCD Module - LCD Connector(CN1): FI-R51S-HF (JAE) - Mating Connector : FI-R51HL or Equivalent (Manufactured by JAE) Table 4.
  • Page 85 LC420WU1 Liquid Crystal Display Product Specification Table 5. Required signal assignment for Flat Link (Thine : THC63LVD823) Transmitter(Pin7=“L”) Host System THC63LVD823 Timing or Compatible 24 Bit Controller FI-R51S-HF 53/81 R10/R20 54/82 RxO0- R11/R21 100Ω TA1-TA1+ RxO0+ 57/83 R12/R22 RxO1- 58/84 R13/R23 TB1-/TB1+ 100Ω...
  • Page 86 LC420WU1 Liquid Crystal Display Product Specification Table 6. Required signal assignment for Flat Link (Thine : THC63LVD823) Transmitter(Pin7=“H”) Host System THC63LVD823 Timing 24 Bit or Compatible Controller FI-R51S-HF R10/R20 51/79 TA1+/TA1- R11/R21 52/80 100Ω R12/R22 53/81 RxO0-/RxO0+ TB1+/TB1- R13/R23 RxO1-/RxO1+ 54/82 100Ω...
  • Page 87 LC420WU1 Liquid Crystal Display Product Specification 3-2-2. Backlight Inverter Input Connector -Inverter Connector : S12B-PH-SMC (manufactured by JST) -Mating Connector : PHR-12 Status Connector -Inverter Connector : 20022WR-02A00(manufactured by Yeon Ho co., Korea) -Mating Connector : 20022HR-02S00(manufactured by Yeon Ho co., Korea) Table 7.
  • Page 88 LC420WU1 Liquid Crystal Display Product Specification 3-3. Signal Timing Specifications Table 8 and Table9 show the signal timing required at the input of the LVDS transmitter. All of the interface signal timing should be satisfied with the following specification for normal operation. Table 8.
  • Page 89 LC420WU1 Liquid Crystal Display Product Specification 3-4. Signal Timing Waveforms 0.7VDD DE, Data 0.3VDD 0.5 VDD DCLK Valid data Invalid data First data Invalid data Pixel 0,0 Pixel 2,0 Valid data Invalid data Invalid data Second data Pixel 1,0 Pixel 3,0 DE(Data Enable) 1080 DE(Data Enable)
  • Page 90 LC420WU1 Liquid Crystal Display Product Specification 3-5. Color Data Reference The brightness of each primary color(red,green,blue) is based on the 8-bit gray scale data input for the color. The higher binary input, the brighter the color. Table 10 provides a reference for color versus data input. Table 10.
  • Page 91 LC420WU1 Liquid Crystal Display Product Specification 3-6. Power Sequence 3-6-1. LCD Driving circuit Power Supply For LCD Valid Data Interface Signal (Tx) Option Signal (DCR_Enable) Lamp ON Power for Lamp Table 11. POWER SEQUENCE Value Parameter Unit 0 < T8 < T2 0 <...
  • Page 92 LC420WU1 Liquid Crystal Display Product Specification 3-6-2. Power Sequence for Inverter 24V (typ.) Power Supply For Inverter Inverter Enable (On/Off) 3-6-3. Deep condition for Inverter (Min) x 0.85 Table 12. POWER SEQUENCE FOR INVERTER Value Remark Parameter Unit After Inverter’s connected (Min) x 0.8 Note : T 1 describes rising time of 0V to 24V and is not applied at restarting time.
  • Page 93 LC420WU1 Liquid Crystal Display Product Specification 4. Optical Specification Optical characteristics are determined after the unit has been ‘ON’ and stable for approximately 2 Hrs in a dark environment at 25±2°C. The specified optical values are measured at an approximate 50cm distance from the LCD surface on condition that viewing angle of Φ...
  • Page 94 LC420WU1 Liquid Crystal Display Product Specification Note : 1. Contrast Ratio(CR) is defined mathematically as : Surface Luminance with all white pixels Contrast Ratio = Surface Luminance with all black pixels Measure Position : center 5point Max C/R (typical 800:1) 2.
  • Page 95 LC420WU1 Liquid Crystal Display Product Specification Measuring point for surface luminance & measuring point for luminance variation. ② ③ ① A : H / 4 mm ⑤ B : V / 4 mm ④ H : 930.24 mm V : 523.26 mm @ H,V : Active Area FIG.
  • Page 96 LC420WU1 Liquid Crystal Display Product Specification Dimension of viewing angle range Normal φ = 90 ° , Up φ = 180 ° , Left θ φ φ = 0 ° , Right φ = 270 ° , Down FIG. 4 Viewing Angle Optical characteristics are determined after the unit has been ‘ON’...
  • Page 97 LC420WU1 Liquid Crystal Display Product Specification 5. Mechanical Characteristics Table 15 provides general mechanical characteristics. Table 15. MECHANICAL CHARACTERISTICS Item Value Horizontal 1005.6 mm Outline Dimension Vertical 609.8 mm Depth 55.5 mm Horizontal 939.0 mm Bezel Area Vertical 531.0 mm Horizontal 930.24 mm Active Display Area...
  • Page 98 LC420WU1 Liquid Crystal Display Product Specification <FRONT VIEW> 96／128...
  • Page 99 LC420WU1 Liquid Crystal Display Product Specification <REAR VIEW> 97／128...
  • Page 100 LC420WU1 Liquid Crystal Display Product Specification 6. Reliability Table 16. ENVIRONMENT TEST CONDITION Test Item Condition High temperature storage test Ta= 50°C 240h Low temperature storage test Ta= -20°C 240h High temperature operation test Ta= 50°C 50%RH 240h Low temperature operation test Ta= 0°C 240h Wave form : random...
  • Page 101 LC420WU1 Liquid Crystal Display Product Specification 7. International Standards 7-1. Safety a) UL 60065, 7 Edition, dated June 30, 2003, Underwriters Laboratories, Inc., Standard for Audio, Video and Similar Electronic Apparatus. b) CAN/CSA C22.2, No. 60065:03, Canadian Standards Association, Standard for Audio, Video and Similar Electronic Apparatus. c) IEC60065:2001, 7 Edition CB-scheme and EN 60065:2002, Safety requirements for Audio, Video and Similar Electronic Apparatus..
  • Page 102 LC420WU1 Liquid Crystal Display Product Specification 8. Packing 8-1. Designation of Lot Mark a) Lot Mark A,B,C : SIZE(INCH) D : YEAR E : MONTH F : FACTORY CODE G ~ M : SERIAL NO. Note 1. YEAR Year 2001 2002 2003 2004...
  • Page 103 LC420WU1 Liquid Crystal Display Product Specification 9. Precautions Please pay attention to the followings when you use this TFT LCD module. 9-1. Mounting Precautions (1) You must mount a module using holes arranged in four corners or four sides. (2) You should consider the mounting structure so that uneven force (ex. Twisted stress) is not applied to the module.
  • Page 104 LC420WU1 Liquid Crystal Display Product Specification 9-3. Electrostatic Discharge Control Since a module is composed of electronic circuits, it is not strong to electrostatic discharge. Make certain that treatment persons are connected to ground through wrist band etc. And don’t touch interface pin directly. 9-4.
  • Page 105 LC420WU1 Liquid Crystal Display Product Specification # APPENDIX-Ⅰ ■LC420WU1-SLB1 Pallet Ass’y DESCRIPTION MATERIAL LCD Module 42INCH TAPE MASKING 20MM X 50M PALLET PAPER 1140X1000X138MM PACKING PACKING PAPER ANGLE PACKING PAPER ANGLE COVER STEEL BAND,CLIP BAND YUPO PAPER 80G 100X100 LABEL 29 / 28 103／128...
  • Page 106 LC420WU1 Liquid Crystal Display ■ LCM Label Product Specification # APPENDIX-Ⅱ ■ LCM Label Model Serial No. UL, TUV, EPD Mark LPL Logo US PATENT No. Origin ■ Serial No. (See CAS 26page for more information) Year Month Inch Serial No. M Ass’y Factory code 30 / 28 104／128...
  • Page 107 LC420WU1 Liquid Crystal Display Product Specification # APPENDIX- Ⅲ ■ Pallet Label ■ Pallet Label LC420WU1 SLB1 RoHS Verified 31 / 28 105／128...
  • Page 108 106／128...
  • Page 109 G510-L42AE02-03AKA ROHS HORIZONTAL CARTON 1.000000 Piece BOX AKAI LCT42Z7TAP S- MT8206 USA K ZHEN XING 2> G580-K00201-01CPA ROHS IB E FOR AKAI W/O DVD 1.000000 Piece K002(OMNIPOTENCE) REMOTE CONTROL USA ADD SAFETY (CHENG YI) 3> G580-L42AE2B-03APA ROHS IB E FOR AKAI 1.000000...
  • Page 110 Spare part list for LCT42Z7TAP 17> G370-L42AE01-01A ROHS SUPPORT CUSHION 4.000000 Piece 18X18X4MM(ZHI QIANG SHENG) 18> G389-L42AE01-01A ROHS PVC SHEET 30X5X1.0MM 8.000000 Piece WITH ADHESIVE BLACK JIA LI 19> G426-L37AD02-01SA ROHS AC JACK BRACKET 1.000000 Piece (TOMEI) 20> G436-L32AE0V-01SA ROHS TERMINAL SHEET FOR 1.000000...
  • Page 111 Spare part list for LCT42Z7TAP 36> G579-L42AE01-04APA ROHS BAR CODE LABEL AKAI 2.000000 Piece LCT42Z7TAP W/SERIAL NO.USA P(QIAN SE) 37> G579-L42AE04-01APA ROHS POP LABEL AKAI 1.000000 Piece LCT42Z7TAP USA P(QIAN SE) 38> G590-L42AE01-03APA ROHS WARRANTY CARD AKAI 1.000000 Piece ENG LCT42Z7TAP USA P(QIAN 39>...
  • Page 112 Spare part list for LCT42Z7TAP 54> G771BL42AE02-02 ROHS IR RECEIVE PCB ASS'Y 1.000000 FOR LCT42AE S-MT8206 USA 55> G771KL42AE02-02 ROHS KEY PCB ASS'Y FOR 1.000000 LCT42AE S-MT8206 USA 56> G778-L42AE03-01 ROHS SPEAKER ASS'Y FOR 1.000000 LCT42Z7TAP S-MT8206 110／128...
  • Page 113 Software Upgrade Process of update MT8206 Preparing : 1． Connect the Plasma/LCD TV and PC with the Software Upgrade Board.Please find the details for connecting refering to the appendix at the end of this file. 2． Store the MtkTool into the PC . Downloading : 3．...
  • Page 114 6． Choose the bit rate as 115200. 7． Select the update binary by pressing browse button. For example,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. 112／128...
  • Page 115 9． The update process is successful as the progress bar is 100%. After the update process is ok, 113／128...
  • Page 116 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 .
  • Page 117 Connect another side of RS232 cable (#2) to the board (#1) 2.2 Connect RS232-VGA cable (#4) (RS232 side) to the board (#1) Connect RS232-VGA cable (#4) (VGA side) to the TV 115／128...
  • Page 118 2.3 Connect USB cable (#5) to the board (#1) Connect another side of USB cable (#5) to PC 3. Cables Standard for Upgrade Board 116／128...
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  • Page 122 Process of update MT5351AG Preparing : 1． Connect the Plasma/LCD TV and PC with the Software Upgrade Board.Please find the details for connecting refering to the appendix at the end of this file. 2． Store the MtkTool into the PC Downloading : 3．...
  • Page 123 6． Choose the bit rate as 115200. Select the update binary by pressing browse button. For example,the binary file name is 7． (this update firmware will be sent to your XXXX_PDP4210EA1_000000XX_X_P.bin. side) 121／128...
  • Page 124 8． Press Upgrade button and start update process. 9． The update process is successful as the progress bar is 100%. After the update process is ok, 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 MT5351AG which has been download into the Plasma TV .
  • Page 125 Appendix: Quick Installation Guide Software Upgrade Board 1. Parts List - Software upgrade board x 1 (#1) - RS232 null cable x 1 for PC (#2) - RS232 null cable x 1 for DTV (#3) - USB cable x 1 (#5) 2.
  • Page 126 2.2 Connect RS232 cable for DTV (#3) to the board (#1) Connect another side of RS232 cable for DTV (#3) to the TV 2.3 Connect USB cable (#5) to the board (#1) Connect another side of USB cable (#5) to PC 124／128...
  • Page 127 3. Cables Standard for Upgrade Board 125／128...
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