Audio Failure - Prestigio NOBILE 1510 Technical & Service Manual

TECHNICAL SERVICE MANUAL

8.10 Audio Failure-1

No sound from speaker after audio driver is installed.
Audio Failure
1. Check if speaker cables are
connected properly.
2. Make sure all the drivers are
installed properly.
Yes
Test
OK?
No
Try another known good
speaker, CD-ROM.
Yes
Re-test
OK?
No
Board-level
Troubleshooting
Correct it.
Replace
Motherboard
Correct it.
Check the following parts for cold solder or one of the following parts on the
motherboard may be defective,use an oscilloscope to check the following signal
or replace parts one at a time and test after each replacement.
1.If no sound cause 2. If no sound cause
of line out, check
the following
parts & signals: parts & signals:
Parts: Signals: Parts:
U513 AMP_RIGHT U513
U3 AMP_LEFT U3
U5 DEVICE_DECT U504
J509 DECT_HP#OPT U517
J510 SPDIFOUT U502
J505 SPK_OFF X506
L12 EAPD MIC1
L13 OPTIN# J508
Q8 L82
L17 L70
L18 D31
L15
Q7
130
3. If no sound cause
of MIC, check of CD-ROM, check
the following the following
parts & signals:
Signals: Parts:
+5VS U513
+3VS U517
+VA U502
MIC_VREF U3
MIC1 J512
MIC2 X506
MIC_EXT R357
R358
R378
C749
C750
Prestigio Nobile 1510
Signals:
CDROM_LEFT
CDROM_RIGHT
CD_COMM