TROUBLESHOOTING GUIDE
E-19
YES
YES
NO
NO
THE AUDIO CAN NOT
RECORD
Is the voltage at pin 2
of L104 5V?
YES
NO
Is there audio signal
at pin 5 of CP102?
Check the circuit between
pin 4 of IC101 to pin 5 of
CP102.
L104 is broken or shorted.
Is bias level at L104 OK?
Is the voltage at pin 29
of IC3001 about 5V?
NO
Check POWER circuit.
Change IC3001.
YES
NO
Change IC101.
Check lead wire of A/C HEAD
and CONNECTOR.
Is there audio signal
at pin 11 of IC101?
Summary of Contents for SD-22VB
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