Logic Part Trouble Shooting; Power - LG VX9100 Service Manual

VX9100

4.3 Logic Part Trouble Shooting

4.3.1 Power

4.3.1.1 Power-On Trouble
+VBATT
+VPWR
+1.275V_MSMC
+1.85V_MSMP1
PS_HOLD
+2.6V_MSMP2
+1.275V_MSMC
+1.85V_MSMP1
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Only for training and service purposes
L400
L401
R409
U401
+VBATT
Circuit Diagram
Circuit Diagram
C423
Test point
Test point
PS_HOLD
+2.6V_MSMA
+2.85V_TCXO
+VPWR
- 88 -
R431
+2.6V_MSMP2
R435
+2.6V_MSMA
+2.85V_TCXO
R437
U107
TCXO_OUT
LGE Internal Use Only