Philips DVD580M Service Manual page 22

EN 22 5. DVD580M
5.3.5 No Analog Audio Output on Cinch
Video output is normal but no analogue audio output
Check point:
pins 2, 3, 4, 5 of U5 (6-Channel audio D/A converter)
Observe :
Signal present at those pins but no signal at pin 25,
and 27.
Signal is presented
Check point: U9 at decoder board
Observe : the output voltage of
Check point: Q12 on decoder board
Observe : the voltage presented at collector terminal of
Q12
Check point: Q12 on decoder board
Observe : the stable low voltage presented at BASE
terminal of Q12
Diagnostic Software, Trouble Shooting and Test Instructions
Yes
U9
No
Yes
Solution : Replace U5
Yes
Solution :
No
circuit
Solution :
No
Solution :
Yes
check the IC U302 at front control board
Figure 5-5
check the power supply
Replace U9
CL 26532085-064.eps
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