Daewoo 14Q1 Service Manual page 42

4. NO COLOR
CHECK SYSTEM MODE
AUTO PAL SECAM
CHECK / REPLACE I501
CHECK VIDEO SIGNAL
AT CATHOD OF CRT
CHECK VIDEO SIGNAL
AT PIN13 OF I501(TDA8374A)
[REFER TO WAVEFORM
NORMAL
N3 N4 N5
CHECK SIGNAL
AT PIN29, PIN30
OF I501
NORMAL
CHECK SIGNAL
AT PIN31, PIN32
OF I501
NORMAL
CHECK SIGNAL
AT PIN19, 20, 21
OF I501
NORMAL
[REFER TO
WAVEFORM ]
NORMAL
CHECK / REPLACE
CRT
OK
]
ABNORMAL
NO PICTURE CHART
ABNORMAL
CHECK / REPLACE
X501(4.43MHz X-TAL)
X502(3.58MHz x-tal)
ABNORMAL
CHECK / REPLACE
I502 & I503
ABNORMAL
CHECK / REPLACE
I501
ABNORMAL
CHECK / REPLACE
I901, I902, I903
(CRT BOARD)
43
REFER TO