LG HB620 Service Manual page 107

4. TROUBLE SHOOTING
Check T P1
VCC of VCXO
VCC 2.8V
Yes
Check T P2
T RK_LO_ADJ
3V Voltage 0V
Yes
Check T P3, T P4
With Oscilloscope
19.2MHz Signal
Yes
VCXO is OK
Check other part
LGE Internal Use Only
No
Check PMIC
No
Check MSM
No Check soldering
and components
[Fig. 4.11] TCXO output waveform(19.2MHz)
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