Daewoo 14Q1 Service Manual page 41

3. NO VERTICAL SCANING(ONE HORIZONTAL LINE ON SCREEN)
CHECK / REPLACE
CRT
NORMAL
CHECK / REPLACE
P401 & DY ]
CHECK VERTICAL Vcc
+16.5V AT PIN3
& +48V AT PIN6
OF I301(TDA 8356)
NORMAL
CHECK SIGNAL
AT PIN1 & PIN2
OF I301 [REFER TO
WAVEFORM ]
NORMAL
CHECK SIGNAL
AT PIN7 OF I301
ABNORMAL
CHECK / REPLACE
R304, R305
C304, R307
42
ABNORMAL
CHECK / REPLACE
D401(BYV95C)
D409(BYV95C)
R303(1W 15K)
ABNORMAL
CHECK OUTPUT
WAVEFORM AT PIN46,
PIN47 OF I501
NORMAL
CHECK / REPLACE
I301
OK
ABNORMAL
CHECK / REPLACE
I501