LG LG-X230DS - FM Trouble Shooting

LGE Internal Use Only
3. TROUBLE SHOOTING
Image
FM Signal Path
3.6. 4. 1. FM Trouble Shooting
3.6 Connectivity PART
FM RF matching
components
U1201
Main
Top
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rved. Only training and service purposes
Checking Flow
Start
check FM su
pply AVDD28
_FM
Check
FM matching
components
Re-solder or change
R1206，U401
FM function ok
Re-solder or change
matching components
Check U1201
Check Softw
are setting
Re-solder or change U
1201
Reset software
No
Yes
Yes
No
Yes
No
Yes
No
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