Audio Speaker - LG LM-X120HM Service Manual

3.8.2 Audio speaker

The speaker control signal is generated by MT6357(U0701), the chipset and the speaker should be checked.
Checking Flow
Start
Check the Speaker.
And reconnect SPK module
Hear the Voice
through the SPK?
No
Yes
Change damaged
contact pin
No
Change SPK
Module
No
Change Main Board
End
LGE Internal Use Only
BOT
Yes
Circuit Diagram
68
3. TROUBLE SHOOTING
Contact pin
(J0104 J0105)
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Placement
Only training and service purposes