Daewoo DTR-14D3VG Service Manual

Contents

Daewoo DTR-14D3VG Service Manual Manual pdf 50 page image

48Trouble Shooting Charts1. NO RASTERCHECK MAIN B+(+124V/+110V) LINENORMALNORMALNORMALABNORMALABNORMAL ABNORMALABNORMALABNORMALABNORMALABNORMALABNORMALNORMALNORMALNORMALNORMALCHECK / REPLACE I701CHECK / REPLACEI803(KA7808)I810(RQ12RFII)CHECK / REPLACED813 (FML-16S)D814 (RGP30J)R825 (2W 33)Q802 (KTA 940)I802(PCLDW)T801 (TSM-4445A47)CHECK VOLTAGE AT(+) OF C807(220 F 400V)310Vdc AT AC 220VCHECK / REPLACE F801FUSE(T4A 250V)CHECK / REPLACED801(PBS4D8GV-CA)R803(10W 1.0OHM)CHECK / REPLACEI801(STR-S6708)& PERIPHERALCOMPONENTCHECK /REPLACEI804(PC817)D812(FML-G16S)R889(2W 56K)CHECK POWER SWITCHINGVOLTAGE AT PIN 43 OF I701*POWER ON; HIGH*STAND-BY ; LOWCHECK VOLTAGE(+5V DC)AT PIN 11 & PIN 37 OF I701CHECK SDA(PIN 3)& SCL(PIN4)WAVEFORM OF I701CHECK / REPLACEX701(6 MHz, 18MHz)CHECK / REPLACER431 (2W, 2K)R433, 432(2W, 6.8K)Q401 (2SD1207)T401 (HD-15D)Q402 (2SD2499)CHECK / REPLACET402 F.B.T& CRTOKOKCHECK HEATER VOLTAGE,VIDEO B+(200V) LINE,16.5V & 48V LINECHECK HORIZONTALDRIVE PULSE AT PIN 40OF I501(TDA8842)[REFER TO WAVEFORM § ]CHECK HORIZONTALVcc(+8V DC) ATPIN 37 OF I501CHECK SDA(PIN 8)& SCL(PIN7)WAVEFORM OF I501CHECK / REPLACEI501(TDA8842)