LG -MC2670 Service Manual page 14

LG-MC26 70
2.1.2 Checking Regulator Circuit
Test Point
U400. 7 High
U400. 31 (+2.85V_RX)
Circuit Diagram
Checking Flow
Check Pin 31
of U400
No
+2.85V_Rx OK?
PMIC Circuit is OK See
next Page to check
VCTCXO
11
Figure 2.1.2
Check Pin 7
of U400
No
Pin 7. High?
Replace U400
Changing Board