LG -S310 Service Manual page 124

Checking Flow
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Only for training and service purposes
TP2(C101)
TP3(R100)
Figure 4.15.5 RF Power Block Checking Points
TP1(VBAT) is OK?
YES
TP2(VPM_RF:2.8V),
TP3(AVDD : 2.8V) are OK?
YES
RF Power Block is OK !!
NO
Check VBAT line
NO
Check MT6235
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4. TROUBLE SHOOTING
TP1(C125)
LGE Internal Use Only