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TROUBLESHOOTING GUIDE
No
Yes
No
Yes
No
Yes
No
Yes
Check POWER BLOCK.
Replace IC5501.
No
Yes
No
Yes
Check IC4001.
Is the voltage at pin
34 of IC5501 12V ?
Does AUDIO signal
appear at pins 6 and 7
of IC5501 ?
Does AUDIO signal
appear at pin 21
of IC5501 ?
Does AUDIO signal
appear at pin 22
of IC5501 ?
Does AUDIO signal
appear at pins 15 and
18 of IC5501 ?
Check POWER BLOCK.
Check J4501 and peripheral
circuit.
NO E-E AUDIO (MONO)
Is the voltage at pin
40 of IC5501 5V ?
Replace IC5501.
Check J4501 and peripheral
circuit.
E-23