Commodore 1940 - Page 16

4. A Missing Color
_In
O.7V
Check signal connector
pin #2, #4, #6
YES
Check CRT cathode
output voltage
(RK) (GK) (BK)
YES
Replace CRT
NO
NO
RK, GK, BK
About 45Vp-p
13
Check video signal
cabie on CPU side
YES
Trouble in video
output & buffer
circuits
Trouble in
video Buffer
circuit
(0803, 0804,
0813,0823,
0823,0824)