Daewoo DTR-14D3VG, Service Manual

Page: 51 / 73

49
2. NO PICTURE(RASTER OK)
CHECK VIDEO SIGNAL
AT PIN 13 OF I501(TDA8842)
[REFER TO WAVEFORM
¤Ø
]
NORMAL
NORMAL
NORMAL
NORMAL
NORMAL
NORMAL
NORMAL
NORMAL
NORMAL
ABNORMAL
ABNORMAL
ABNORMAL
ABNORMAL
ABNORMAL
ABNORMAL
ABNORMAL
ABNORMAL
ABNORMAL
ABNORMAL
ABNORMAL
ABNORMAL
ABNORMAL
CHANGE INPUT MODE
RF
¤A
AV
¤A
AV
¤A
RF
CHECK WAVEFORM AT
PIN 29, PIN 30 OF I501
CHECK PICTURE CONDITION
NORMAL
¥ ,
NORMAL
¥–
FAVOURITE
CHECK / REPLACE
I701
& PERIPHERAL
COMPONENT
CHECK / REPLACE
I501
CHECK WAVEFORM
AT PIN 19, 20, 21
OF I501
CHECK VIDEO SIGNAL
AT CATHOD OF CRT
[REFER TO WAVEFORM
¤ı§ §æ
]
CHECK SIGNAL
AT PIN 18
OF I501
CHECK / REPLACE
CRT
CHECK VOLTAGE
VIDEO B+,
HEATER
OK
OK
OK
OK
CHECK
HORIZONTAL
CIRCUIT PARTS
CHECK / REPLACE
AT PIN 40, 41, 42
OF I701
CHECK / REPLACE
I901, I902, I903
(CRT BOARD)
CHECK / REPLACE
Q705,Q706,Q707
Q708,Q709,Q710
CHECK /
REPLACE
Q702, Q703
CHECK /
REPLACE
R759,R720
I703(UPC574J)
CHECK BAND SELECT
VOLTAGE AT BL,BH,BU
& B+ VOLTAGE
OF TUNER
CHECK TUNING VOLTAGE
AT VT OF TUNER
CHECK / REPLACE TUNER
CHECK 33V LINE
CHECK / REPLACE
Q101, Q102, SF101
CHECK / REPLACE
I501
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