Checking Switch Block Power Source - LG U8120 Service Manual

4.19.2 Checking Switch Block power source

❈ Before Checking this part, must check common power source (through Vincenne) part
TP Command
MODE=0
SWRX= 64,1024,2
C heck Soldering .
It is necessary to c heck shor t co nditi on.
Using Tester, Che ck 4 resistor
ANTSW0(R1 003),ANTSW1( R10 04),
ANTSW2(R1 005),ANTSW3( R10 06)
Check A NTSW0(R1003)
To check Switch i np ut power source.
No
Open?
Yes
No
?
High
Yes
Check each mode
by TP command
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4. TROUBLE SHOOTING
Check soldering
(R1003)
No
OK?
Yes
Change the Board
Resoldering