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TROUBLESHOOTING
No power
Check
B/U, ACC
OK
Check
the display
OK
Check
the operating key
OK
Problem of
IC402, IC404, IC406, IC506
Power on
No sound radio
Check
the display
OK
Check
the operating key
OK
Check
the voltage value of
TUNER8.5V/TUNER5V
OK
Check
the waveform of
16,17pin of BL101
OK
Check
the waveform of
38,39,43,44pin
of IC301
OK
Check
the waveform of
IC501
OK
Check
the waveform of
IC503
OK
Connection J502
PN-3001P
PP-3001M
Confirm to
circuit line of B/U5V, ACC,
NG
SYS5V
the voltage value of
IC505, Q520, Q519
Confirm to
NG
the voltage value of
Q515, IC801
NG
Problem of IC801
Confirm to
NG
the voltage value of
Q515, IC801
NG
Problem of IC801
NG
Problem of Q109, IC104
NG
Problem of BL101
NG
Problem of IC301
NG
Problem of IC501
NG
Problem of IC503
Power on
No sound CD
Check
the display
OK
Check
the operating key
OK
Check
the voltage value of
CD8V/CD5V
/CD3.3V
OK
Check
the waveform of
1, 2, 3pin of J203
OK
Check
the waveform of
38,39,43,44pin of
IC301
OK
Check
the waveform of
IC501
OK
Check
the waveform of
IC503
OK
Connection J502
- 6 -
Confirm to
NG
the voltage value of
Q515, IC801
NG
Problem of IC801
NG
Problem of
IC203, IC204, Q217
NG
Problem of CD mech
NG
Problem of IC301
NG
Problem of IC501
NG
Problem of IC503
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