Read Sony HCD-GPX5G Service Manual online
HCD-GPX5G/GPX7G/GPX8G
5
D-AMP
Mount Diagnosis Flow (1/2)
PLA
Y MUSIC
Is there audio output from D-AMP
Board?
Checks 3V output of NO1403 6pin(Sub on).
Is the power voltage OK?
Checks 13.5V output of NO1403 1pin.
Is the power voltage OK?
Checks 3V output of NO1403 5pin(Main on)
Is the power voltage OK?
Checks 54.5V output of NO1402 1pin(PVDD).
Is the power voltage OK?
Checks OUT
terminal-43V output of REG IC1402
Or
, Checks GND and OUT
T
erminal with
Tester
.
Is it shorted out?
Reinserts the cable or Exchanges.
If there are no problems, Checks Sub
on Output of Main Board side.
Reinserts the cable or Exchanges.
If there are no problems, Checks output of
Switching regulator Board.
Reinserts the cable or Exchanges.
If there are no problems, Checks Output of
Sub on Output of Main Board side.
Reinserts the cable or Exchanges.
If there are no problems, Checks output of
Switching regulator Board.
Checks circumference circuit of REG IC1402.
If there are no problems, exchanges IC1402.
A
B
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
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