Sony HCD-GPX33 Service Manual page 21

D-AMP Mount Diagnosis Flow (2/2)
A
Checks OUT Terminal 5V output of REG IC1009 or,
Checks GND and OUT Terminal with Tester.
Is it shorted out?
Checks OUT Terminal -5V output of REG IC1010 or,
Checks GND and OUT Terminal with Tester.
Is it shorted out?
Leave D-AMP Mount to a state of it only and,
checks Power Audio Driver (MOS FET) with Tester.
Is it shorted out? ¢ Refer to Page 22).
Assembles into the unit again then ,checks
whether there is the audio output from
D-AMP Board.
END
B
No
Yes
No
Yes
No
Yes
No
Yes
Checks circumference circuit of REG IC1009.
If there are no problems, exchanges IC1009.
Checks circumference circuit of REG IC1010.
If there are no problems, exchanges IC1010.
Replaces D-AMP Board
Replaces D-AMP Board