LG GW620 - Page 95

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Only for training and service purposes
4. TROUBLE SHOOTING
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Check PM6658
Yes
No
Check TP1
VCC of TCXO
VCC ≥ 2.8 V
Check TP2
2.4V ≥ Voltage ≥ 0.4V
Check TP3
19.2 MHz Signal
TCXO is OK
Check soldering and
components
Check MSM6280
Yes
Yes
No
No
Check the PM7540
Check the MSM7200A