Service manual

4. TROUBLE SHOOTING
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Copyright © 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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Check TP1
VCC of TCXO
VCC ≥ 2.8V
Check the PM8029
No
Yes
Check TP2
2.4V ≥ Voltage ≥ 0.4V
Check the MSM7227A
No
Yes
Check TP3
19.2 MHz Signal
Check soldering and
components
No
Yes
TCXO is OK