Audio Can Not Be Recorded - JVC HR-J3009UM Service Manual

AUDIO CAN NOT
BE RECORDED
Is BIAS level O.K at
T4001? 60V
Yes
Is there AUDIO signal
at pin 10 of IC4001?
Yes
Check J4201 and peripheral circuit.
TROUBLESHOOTING GUIDE
No
Is the voltage at Emitter
of Q4003 5V?
Is the voltage at pin 23
of IC4001 above 5V?
T4001 is broken or shorted.
No
No
Yes
No
Yes
Check POWER circuit.
Check IC4001.
Check the circuit between
audio out of Tuner and
pin 10 of IC4001.
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