Daewoo DTR-14D3VG, Service Manual

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48
Trouble Shooting Charts
1. NO RASTER
CHECK MAIN B+(+124V/+110V) LINE
NORMAL
NORMAL
NORMAL
ABNORMAL
ABNORMAL
ABNORMAL
ABNORMAL
ABNORMAL
ABNORMAL
ABNORMAL
ABNORMAL
NORMAL
NORMAL
NORMAL
NORMAL
CHECK / REPLACE I701
CHECK / REPLACE
I803(KA7808)
I810(RQ12RFII)
CHECK / REPLACE
D813 (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 220V
CHECK / REPLACE F801
FUSE(T4A 250V)
CHECK / REPLACE
D801(PBS4D8GV-CA)
R803(10W 1.0OHM)
CHECK / REPLACE
I801(STR-S6708)
& PERIPHERAL
COMPONENT
CHECK /REPLACE
I804(PC817)
D812(FML-G16S)
R889(2W 56K)
CHECK POWER SWITCHING
VOLTAGE AT PIN 43 OF I701
*POWER ON; HIGH
*STAND-BY ; LOW
CHECK V5V DC)
AT PIN 11 & PIN 37 OF I701
CHECK SDA(PIN 3)
& SCL(PIN4)
WAVEFORM OF I701
CHECK / REPLACE
X701(6 MHz, 18MHz)
CHECK / REPLACE
R431 (2W, 2K)
R433, 432(2W, 6.8K)
Q401 (2SD1207)
T401 (HD-15D)
Q402 (2SD2499)
CHECK / REPLACE
T402 F.B.T
& CRT
OK
OK
CHECK HEATER VOLTAGE,
VIDEO B+(200V) LINE,
16.5V & 48V LINE
CHECK HORIZONTAL
DRIVE PULSE AT PIN 40
OF I501(TDA8842)
[REFER TO WAVE
FORM
§
]
CHECK HORIZONTAL
Vcc(+8V DC) AT
PIN 37 OF I501
CHECK SDA(PIN 8)
& SCL(PIN7)
WAVEFORM OF I501
CHECK / REPLACE
I501(TDA8842)