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3.12 Audio
3.12.1 Speaker troubleshooting
Speaker path as below :
MSM8926-2 -> WCD9302 SPKR_DRVP / SPRK_DRVN -> Speaker
START
After power on, Headphone icon
display on Upper right LCD ?
Change Speaker Module
Yes
Speaker Sound can hear?
ANT10003, ANT10004 is OK?
TP1 to TP2/TP3 to TP4
Short test. Is it OK?
Check TP5(BUCK_VSW)
TP6(VDD_SPKDRV)
Fail on TP5 -> replace U6100
Fail on TP6 -> replace R6108
End
LGE Internal Use Only
Yes
No
Replace component ANT10003,
No
No
Yes
No
Yes
Yes
No
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3. TROUBLE SHOOTING
Refer to 3.9.5 Ear-MIC troubleshooting
ANT10004
Replace component L6700, L6701
Headphone path works well?
No
Replace component
U2100 or main board
Copyright © 2014 LG Electronics. Inc. All right reserved.
Yes
Replace component
U6100
Only for training and service purposes
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