
LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
- 97 -
Check TP1
VCC of VCXO
VCC
≥
2.8V
Check TP2
TRK_LO_ADJ
3V
≥
Voltage
≥
0V
Check TP3, TP4
With Oscilloscope
19.2MHz Signal
VCXO is OK
Check other part
Check PMIC
Check MSM
Check soldering
and components
Yes
Yes
Yes
No
No
No
Summary of Contents for U990
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