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§ Troubleshooting
Power indicator is green.
Does DC 12V appear at
pin 11 of 10101?
Check DC 12V line IC605.
Does the video pulse
Ed appear at pins 4, 6 and 9
of 1C101 on the video PCB?
Check clamp circuit
Q104 on the video PCB
and 1€201 (pin #22) on
the main PCB.
Does the video pulse
9 | appear at pins 17, 20 and
26 of 1101?
w
Does the clamp signal
appear at pin 14 of 1C101?
Does the video amplified
pulse appear at
pins 4, 8 and 12 of 1C102?
Does the DC voltage
appear at pin 12 of IC101?
Yes
Replace the !C102.
Check contrast circuit
on the main PCB D553, D554,
D555, 0510 and 0511.
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