LG -P768 Service Manual page 50

LGE Internal Use Only
Check TP1
VCC of TCXO
1.7V ≥ VCC ≥ 1.9V
Yes
Check TP2
26 MHz Signal
Yes
TCXO is OK
No
Check the PMB5712
No
Check soldering and
components
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4. TROUBLE SHOOTING
Only for training and service purposes