DAEWOO ELECTRONICS T008 Service Manual
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DAEWOO ELECTRONICS T008 Service Manual

DAEWOO ELECTRONICS T008 Service Manual

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Daewoo Electronics
SERVICE MANUAL
T008
1

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Summary of Contents for DAEWOO ELECTRONICS T008

  • Page 1 Daewoo Electronics SERVICE MANUAL T008...

  • Page 2: Table Of Contents

    CONTENTS 1. Safety Precautions………………………………………………………………………………… 2. MCU and signal Processor for a PAL/NTSC TV…………………………………………………… 3. Definition of A8891CPNG-**** Pin………………………………………………………………… 4. Remote Control Circuit Diagram and Function…………………………………………………… 1)User Remote……………………………………………………………………………………… 2)Service Remote…………………………………………………………………………………… 5. Service Controlled Function………………………………………………………………………… 1)White balance adjustment………………………………………………………………………… 2)Pictureand AGC adjustment…………………………………………………………………… 3)Option set………………………………………………………………………………………… 6.

  • Page 3: Safety Precautions

    1. SAFETY PRECAUTIONS The design of this product contains special hardware, many manufacturer’s replacement components. circuits and components specially for safety purposes. For 10. Isolation Check continued protection, no changes should be made to the original (Safety for Electrical Shock Hazard) design unless authorized in writing by the manufacturer.

  • Page 4: Mcu And Signal Processor For A Pal/Ntsc Tv

    2.MCU and signal processor for a PAL/NTSC TV The TMP8893CPNG-6RE1 is an integrated circuit for a PAL/NTSC TV. A MCU and a TV signal processor are integrated in a 64-pin shrink DIP package. The MCU contains 8-bit CPU, ROM, RAM, I/O ports, timer/counters, A/D converters, an on-screen display controller, remote control interfaces, IIC bus interfaces and the Closed Caption decoder.

  • Page 5: Definition Of A8891Cpng-**** Pin

    3. Definition of A8891CPNG-6RE1 Pin Pin name Function EyeCare or X-ray EyeCare or X-ray Thermal resistance Thermal resistance（FS） Key input GND connection RESET Reset signal input XOUT 8 MHz oscillator connecting 8 MHz oscillator connecting TEST GND connection 5V power supply GND connection TV DEF AGND GND yerminal for TV DEF block...

  • Page 6: Remote Control Circuit Diagram And Function

    B out Output terminal for B signal. TV DGND GND terminal for digital block. up AGND GND for Oscillator circuit up AVDD Vdd for Oscillator circuit Supply 5V VIDEO1/2 TV=0,AV1=OPEN，AV2=5V SDA1 IIC-BUS SDA1 SCL1 IIC-BUS SCL1 50/60Hz control 50/60Hz MUTE MUTE H.SYNC Horizontal sync signal input...

  • Page 7: Service Remote

    MUTE Mute/unmute EyeCare EyeCare POWER Power on/off TV/AV TV/AV DISPLAY Status Recall Volume +/Menu Item adjust(increase) and confirm Channel +/Menu Item select Volume -/Menu Item adjust(decrease) Channel -/Menu Item select Service Service in SLEEP Sleep CALE Calendar ZOOM Screen zoom/wide Message LOCK Lock...

  • Page 8: Service Controlled Function

    60Hz VERTICAL AMPLITUDE 50Hz HORIZONTAL PHASE VP60 60Hz VERTICAL PHASE RCUT - R CUT adjust(decrease) RCUT + R CUT adjust(increase) GCUT - G CUT adjust(decrease) GCUT + G CUT adjust(increase) BCUT - B CUT adjust(decrease) BCUT + B CUT adjust(increase) HITS 50Hz VERTICAL AMPLITUDE VLIN...
  • Page 9 j) HITS: 50Hz VERTICAL AMPLITUDE k) VLIS: 50Hz VERTICAL-LINEARILTY l) VSS: 50Hz VERTICAL-S CORRECTION m)AGC:Tuner AGC. 2)For Mass Production The items of the Picture adjust mode can be accessed quickly using below service remote No.2 and No.5. For example: If you want to adjust Vertical-SIZE ,then you push [V-SIZE] button push [+] /[-]keys to adjust push [M-ON] button to exit after you adjust over.

  • Page 10: Option Set

    (3)Option set 1)OPT Function Status “ 0” Status “ 1” Bit7 The algorithm of ASM ASM doesn't judge IFLOCK with case 4 ASM judge IF LOCK with case 4 Bit6 The algorithm of ASM ASM doesn't judge AFT area with case 4 ASM judge AFT area with case 4 Bit5 VT Down of AFT when No Signal...
  • Page 11 Bit4 Fjp_av_stereo AV mono AV stereo Bit3 Fjp_fm no FM use FM Bit2 Fjp_video2 no VIDEO2 use VIDEO2 Bit1 Fjp_dvd no DVD use DVD Bit0 Fjp_S-video no S-video use S-video 6)EFF1 Function Status “ 0” Status “ 1” EFF1 Bit7 No use This bit must be zero Bit6...
  • Page 12 Bit2-0 Color select for the highlight menu area 0:BLACK 1:BLUE 2:GREEN 3:CYAN 4:RED 5: MAGENDA 6:YELLOW 7:WHITE 12)CALB Function Status “ 0” Status “ 1” CALB Bit7 Transparency enable register for calendar not assign half transparency assign half transparency area Bit6-4 Background color for the calendar area 0:BLACK 1:BLUE 2:GREEN3:CYAN 4:RED 5: MAGENDA...
  • Page 13 Function Status “ 0” Status “ 1” CLTM Bit7 P/N ID PAL/NTSC killer sensitivity, Normal Bit6 Killer off Normal Always killer off Bit5 N COMB Color comb filter for NTSC. On Bit4-3 Demodulation Phase 00:PAL 01:NTSC1 10:NTSC2 11:DVD Bit2-0 Y Delay Time 000:0ns 001: 40ns 010: 80ns 011: 120ns 100: 160ns 101: 200ns 110: 240ns 111: 280ns 21)HAFC...
  • Page 14 Bit1-0 Internal ADC 00:GND 01: R output 10: B output 11: Monitor RF AGC via ADC 26)SSM Function Status “ 0” Status “ 1” Bit7-6 No use Bit5-4 S Trap Frequency response Control HP/LP 00:OFF 01:1dB HPF 10:-3dB LPF 11:-2dB LPF For M Bit3-2 S Trap Q.

  • Page 15: Service And Design Data

    {[(127.25+133.25)÷2+45.75]x16-48} =2768(algorism), change to hex is 0AD0，so PVHH=0A ，PVHL=D0 PUHH/PUHL {[(361.25+367.25)÷2+45.75]x16-48}=6512(algorism), change to hex is 1970，so PVHH=19 ，PVHL=70 PVHH=OA PVHL=D0 PUHH=19 PUHL=70 6. Service and Design Data 21” UTI T008 BUS DATE T008 21” SAMSUNG ITEM DATA REMARK ITEM DATA...

  • Page 16: Ics Functional Description

    ASSH ASYMMETRY SHARP BBCT Blue back hysteresis counter (BUS H sync detection) SUB SHARP MAX SHPX VCD0 VCD0 data SUB SHARP MIN SHPN VCD1 VCD1 data UVBK U/V BLK ADJ CCOR Set menu character’s color ABCL ABL SYSTEM TCOR Set menu top character’s color DCBS A part of Video data in detail SCOR...

  • Page 17: Test Point Waveforms

    8．Test Point Waveforms 2Vpp 1Vpp 3.8Vpp 3.8Vpp 3.8Vpp A8891 PIN30 A8891 PIN26 A8891 PIN50 A8891 PIN51 A8891 PIN52 95Vpp 7Vpp 95Vpp 95Vpp 5Vpp A8891 PIN13 A8891 PIN12 CRT KR CRT KG CRT KB 0.7Vpp 23Vpp 1000Vpp 4.5Vpp 1.3Vpp A8891 PIN16 V444 B V411 C A8891 PIN6...

  • Page 18: Other

    Voltage STV9302B Voltage 26.5 13.2 26.8 TDA7253(Mono) Voltage 11.5 19.6 TDA7263(Stereo) Voltage AC supply : 110V 50/60Hz 10. Other 1)Binary code change to hex Binary code 0 0 0 0 0 0 0 1 0 0 1 0 0 0 1 1 0 1 0 0 0 1 0 1 0 1 1 0...

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