Vcr Mechanism Troubleshooting - Zenith XBV243 Service Manual

VCR MECHANISM TROUBLESHOOTING

1.Deck Mechanism
A.
Auto REW doesn't work.
YES
Is the output of END sensor
of supply side "H":
more than 3.5V?
Or, less than 0.7V~1V?
YES
Is the voltage across IR LED
between 0.8~1.5V?
NO
Check syscon circuit.
B.
No F/R modes.
YES
Is the present mode,
F/R mode?
YES
Does the Capstan Motor rotate?
YES
Do the T/Up and
Supply Reel rotate?
YES
Check syscon circuit.
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MECHANISM - VCR
NO
Is the Vcc voltage of
END sensor 5V?
YES
Replace END sensor
NO
Replace LED
NO
Is the mode SW assembled
correctly (refer to page 4-14)
NO
YES
YES
Replace the Capstan Motor
4-23
NO
Check the syscon power.
NO
Check servo, power circuits
D35E COMBO - SERVICING