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4T-C6070AH1X
CHAPTER 6.
TROUBLESHOOTING
[1] TROUBLESHOOTING
[1] TROUBLESHOOTING TABLE
No power (front LED failure to light up) or no startup (front LED failure to turn from red to green)
Are the wire harnesses and other cables properly connected in
the set?
Is there the PS̲ON and PNL̲POW signal input at pins
(14 ) and (16 ) of P9601?
Are the DC/DC converter outputs and the output voltages along
the control lines as specified?
1) D 1.5V (IC9601)
2) BU 3.3V (IC9602)
3) BU 1.1S (IC9603)
4) D 3.3V (IC9604)
5) D 5.1V (IC9605)
6) PNL +12V (AO6405)
7) BU +5V (D9602 )
YES
YES
6 – 1
NO
Reconnect the wire harnesses and other cables properly in the
set.
NO
Check the PS̲ON signal line PNL ̲POW signal line.
NO
Check the DC/DC converters and the control lines. Replace
defective parts as required.
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