8399 N/B Maintenance

8.11 Audio Failure(1)There is trouble with the sound from speaker or completely no sound.

Audio Failure

1.Check if speaker cables are connected properly.

2. Make sure all the drivers are installed

Board-level

 

 

 

Secret

 

 

 

Document

 

properly.

 

Troubl shooting

 

 

 

 

 

MiTac

 

Check following parts and signals:

OK?

 

 

Parts:

 

Signals:

 

Confidential

R200

L50

AC97_SDOUT

Test

Yes

 

 

U10

C148

+AVDDAD

 

 

Correct it.

 

U14

R403

VREF_OUT

 

 

 

 

U26

U11

MIC1

No

 

 

 

U13

L52

MIC2

 

 

 

J13

R205

CDROM_LEFT

 

 

 

 

J21

Q13

CDROM_RIGHT

 

 

 

 

L45

C235

CDROM_ROMM

Try another known good speaker,

Replace

L47

J12

AUDIO_14M

CD-ROM.

 

L48

L39

AC97_SYNC

 

Motherboard

L43

L41

AC97_SDIN

 

 

 

 

 

 

R191

L51

AC97_RST#

 

 

 

 

R194

L53

AC97_BITCLK

 

 

 

 

R213

.

SB_SPKR

Re-test

Yes

Replace the

 

.

 

L62

L56

CARDSPK#

 

 

OK?

 

faulty parts.

 

R172

 

AOUT_L

 

 

 

 

R173

 

 

No

AOUT_R

AC_GPI3 TP534

+5V_AMP SHUTDOWN SPKR_ROUT+ SPKR_ROUT- SPKR_LOUT+ SPKR_LOUT-

HP_SENSE

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