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TROUBLE SHOOTING GUIDE
THE AUDIO CAN NOT RECORD
NO
YES
NO
YES
YES
Check disconnection and short
of L102.
Check POWER BLOCK and
voltage of base of Q101.
Is there voltage of
base of Q101 about
5V?
In starting recording,
is there sine wave at
pin 98 of IC101?
YES
Check lead wire of A/C HEAD
and CONNECTOR.
NO
Change Q101.
Is bias level at L102 OK?
Is there Asin wave at
pin 5 of L101?
YES
Is there audio signal at
pin 1 of IC101?
Check IC701 and
the circuit from TUNER
or audio input juck to IC01.
Change L102.
NO