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relaJed circuits.
1
Circuits Checked:
*
Video Circuit And Its
NO PICTURE APPEARS
I
DOES INPUT SIGNAL WAVEFORM APPEAR
AT BOTH ENDS OF RI0l, R121, R141 ?
1
I
YES
T
DOES 5Vp_p WAVEFORM
CHECKTHEST AND INPUT CIRCUIT
ED CIRCUIT
APPEAR AT ICI09 #12
I
YES
I
DOES 35Vp_p WAVEFORM
APPEAR AT CNI06,107,108
?
YES
I
I
NO
I
I
VIDEO CLAMP CIRCUIT
I
1
L
0701-0703
I
NO
I
SYNC PROCESSOR
1
I
IC106, 107, 109
1
L
VIDEO AMP
. . I
0101· 0104
0106·0109
0111· 0114
I
AND ITS RELAT
0801·0802, 0811· 0812, 0821-0822
ANDCHECKTH
BETWEEN THE
E CONNECTIONS
MONITOR&PC
Note: If the picture does not appear, fully rotate the brightness
contrast control clockwise before inspecting.
34
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