LG AT&T GR500 Service Manual page 133

4. TROUBLE SHOOTING
4.20.2 Checking Switch Block power source
※ Before Checking this part, must check common power source(through Veronica) part
TP Command
MODE=0 (band= EGSM)
SWRX=64,2 (SWRX= Channel, RxGain)
Check Soldering
It is necessary to check short condition.
Using Tester, Check 4 capacitors
ANTSW0(C213),ANTSW1(C210)
ANTSW2(C209), ANTSW3(C214)
Check ANTSW0(C213)
To check Switch input power source
LGE Internal Use Only
No
DC Open?
Yes
No
High?
Yes
Check each mode
Change the Board
By TP command
- 134 -
another capacitor.
Check soldering
(C213)
No
OK?
Yes
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Replace it with
Resolder it