3-19
(3)
Hi-Fi REC.
It can’t be recorded Hi-Fi Audio
signal.
Check Vcc of IC801.
(Pins3, 15, 32, 36, 46, 54)
YES
YES
Check IC801 Pin37(Data), Pin38(CLOCK).
YES
Do Audio signals appear at IC801
Pins78, 80?
YES
Do FM Audio signals appear at IC801
Pin27?
YES
Check the Contact Point of Drum
Connector if good then Replace the Drum.
YES
Check Power 5V, 9V.
NO
Check ports of µ-COM.
(IC501 pins 71, 72)
Check Audio input signal of IC801
Pins11, 73(AV1), 12, 74(VDR.A.), 9,
71(AV2).
NO
Replace IC801.
NO
NO
VCR ELECTRICAL TROUBLESHOOTING GUIDE
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