8170 N/B MAINTENANCE
8.14 Audio Failure
No sound from speaker after audio driver is installed.
Audio Drive Failure
1.Check if speaker cables are connected properly.
2.Make sure all the drivers are installed properly.
Replace
Troubleshooting
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.
Test | Yes |
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Correct it. | |||||
OK? |
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1.Try another known good speaker,
2.Exchange another known good charger board.
Yes |
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Correct it. | ||||||
OK? |
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Motherboard
1.If no sound cause of line out, check the following parts & signals:
Parts: | Signals: | ||
U15 X2 | AOUT_R | ||
U510 U507 | |||
AOUT_L | |||
U17 | U511 | ||
SPKROUT+ | |||
VR1 | U18 | ||
SPKROUT- | |||
C[707:710] | |||
SPKLOUT+ | |||
R[664:667] | |||
C[691:694] | SPKLOUT- | ||
L47 Q514 | LINE_OUT_5 | ||
Q515 Q10 | LINE_OUT_2 | ||
L[537:539] | SPK_OFF | ||
L523 L524 | SPDIFOUT | ||
L528 L531 | |||
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J[18:20] |
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2.If no sound cause of MIC, check the following parts & signals:
Parts: | Signals: | ||
J16 J22 U15 | MIC | ||
L535 L525 | MIC_2 | ||
C701 | R148 | MIC_3 | |
R149 | R669 | ||
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U513 C194 |
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R151 | C209 |
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R670 | C686 |
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3.If no sound cause of
Parts: Signals:
J10 CDROM_RIGHT
R[132:134] CDROM_LEFT
R[140:142] CDROM_COMM C[191:193]
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