TROUBLESHOOTING GUIDE
NO PLAYBACK PICTURE
Does E-E appear on the
Monitor TV ?
Yes
No
Is the voltage at pin 55 of
IC4001 5V ?
Yes
No
Check Power circuit.
Yes
No
Is there PB Y/C signal
at TP4001 ?
Yes
No
Is there FM signal at pins
71 and 72 of IC4001 ?
Yes
No
Is there FM signal at
pin 18 of IC4001 ?
Replace IC4001.
Yes
No
Is there VIDEO signal
at pin 17 of IC4001 ?
Check Q4007 and the peripheral
circuit.
No
Yes
Is there VIDEO signal
at pin 29 of IC4001 ?
Replace IC4001.
Check J4201 and the connection
to J4201.
Check PB Y/C at pin 74 of IC4001 and
the connection of the CYLINDER.
Check R4080, C4032 and the
peripheral circuit.
E-8
