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