LG GT500 Service Manual page 134

4.19.2 Checking Switch Block power source
※ Before Checking this part, must check common power source (through AB3100) part
TP Command
MODE=3
SWRX=190,3
Check Soldering
It is necessary to check short condition.
Using Tester. Check 3 capacitors
ANTSW0(TP2),ANTSW1(TP3)
ANTSW2(TP4)
Check ANTSW0(TP2)
To check Switch input power source
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Only for training and service purposes
No
Open?
Yes
No
High?
Yes
Check each mode
By TP command
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4. TROUBLE SHOOTING
Check soldering
(C106)
No
OK?
Yes
Change the Board
Resoldering
LGE Internal Use Only