Daewoo 14Q1 Service Manual page 40

2. NO PICTURE(RASTER OK)
ABNORMAL
CHANGE INPUT MODE
RF AV RF
ABNORMAL
CHECK PICTURE CONDITION
NORMAL NORMAL
FAVOURITE
ABNORMAL
CHECK TUNING VOLTAGE
AT VT OF TUNER
ABNORMAL
NORMAL
CHECK BAND SELECT
VOLTAGE AT BL,BH,BU
& B+ VOLTAGE
OF TUNER
ABNORMAL
NORMAL
CHECK / REPLACE TUNER
CHECK / REPLACE
Q101, Q102, SF101
CHECK / REPLACE
I501
CHECK VIDEO SIGNAL
AT PIN 13 OF I501(TDA8374A)
[REFER TO WAVEFORM
CHECK / REPLACE
I701
ABNORMAL
& PERIPHERAL
COMPONENT
CHECK /
REPLACE
Q702, Q703
OK
CHECK 33V LINE
CHECK / REPLACE
AT PIN 40, 41, 42
OF I701
NORMAL
CHECK / REPLACE
OK
Q705,Q706,Q707
Q708,Q709,Q710
]
CHECK WAVEFORM
CHECK /
REPLACE
R759,R720
CHECK WAVEFORM
I703
ABNORMAL
CHECK VIDEO SIGNAL
AT CATHOD OF CRT
[REFER TO WAVEFORM
ABNORMAL
CHECK / REPLACE
I901, I902, I903
OK
(CRT BOARD)
NORMAL
41
NORMAL
CHECK WAVEFORM AT
PIN 29, PIN 30 OF I501
NORMAL
CHECK / REPLACE
AT PIN 31, PIN 32
OF I501
NORMAL
CHECK / REPLACE
AT PIN 19, 20, 21 I502(TDA4665)
OF I501 I503(TDA8395)
NORMAL
CHECK SIGNAL
AT PIN 18
OF I501
]
NORMAL
CHECK VOLTAGE
CHECK / REPLACE
VIDEO B+,
CRT
HEATER
CHECK
OK HORIZONTAL
CIRCUIT PARTS
ABNORMAL
I501
ABNORMAL
ABNORMAL
ABNORMAL
ABNORMAL