TROUBLESHOOTING GUIDE
No
Yes
Yes
Is there VIDEO signal at
pin 6 of IC4002 and
Does VIDEO signal appear at
pin 8 of IC4001 ?
Does FM signal appear
at pin 8 to CP4001 ?
Yes
Yes
No
Check CYLINDER UNIT
and IC4101 circuit.
No
No
Check the circuit from VIDEO input
jack to IC4001, from Tuner Pack to
IC4001.
Check the peripheral circuit of Q4007,
Q4009.
Replace IC4001.
Replace IC4101.
RECORDING MECHANISM WORKS,
BUT NO VIDEO RECORDED FROM
INPUT JACK OR TUNER
Does VIDEO signal
appear at pin 51 or 53
of IC4001 ?
Does the FM current
appear at pin 8 of IC4101
during the REC.
E-26
