Table of Contents
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AUDIO CAN NOT BE RECORDED
Is BIAS waveform appeared ?
Yes
Is there AUDIO signal at
pin 1 of IC4501 ?
Yes
Is there AUDIO signal
at pin 6 of IC4501 ?
Yes
Check the lead wire and connector
to A/C HEAD.
CASSETTE CAN BE LOADED
BUT UNIT HAS NO FUNCTIONS
Does mode indicator
appear in Display ?
No
Does VCR operate with
the remote control?
Yes
Replace SW1001.
TROUBLESHOOTING GUIDE
No
Is the voltage at pin 92
of IC4501 5V ?
L4503 is broken or shorted.
Check peripheral circuit.
No
No
Yes
No
E-12
No
Yes
Check POWER BLOCK.
Check the circuit of 21pin and
TUNER.
Check IC4501 and the peripheral
circuit.
Replace IC4501.
Check LOADING MOTOR, MODE
SWITCH and the peripheral parts.
Check IC1006.
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