LG U310 Service Manual page 75

4. TROUBLE SHOOTING
Check 1. Crystal part
If you already check this crystal part, you can skip check 1.
TP2
TP5
TP4
TCXO_PM
TCXO_OUT
Test Point (Crystal Part)
C1060
1000p
C1066 C1067
1000p 0.1u
19.2MHz
VCC GND
4
X1001
C1072
OUT VCONT
3
100p
TG-5001LA-19.2MHz
TP5
Schematic of the Crystal Part
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TP3
TP1
VREG_TCXO_2.85V
TP2
R1026
2
100ohm
1
C1073
0.01u
TP1
TP3
TP4
TRK_LO_ADJ