LG LG-H815 - Transceiver DC Power Supply Circuit

Copyright ⓒ 2015 LG Electronics. Inc. All right
reserved. Only training and service purposes
LGE Internal Use Only
3. TROUBLE SHOOTING
Checking Transceiver DC Power Supply Circuit
3.2 Transceiver DC Power Supply Circuit
Image Checking Flow
Check TP1
+1V_RF is OK?
START
YES
Check TP2
+1.8V_RF is OK?
YES
Check next step
The Problem may be
Logic part
Refer to Logic trouble
shoot
The Problem may be
Logic part
Refer to Logic trouble
shoot
NO
NO
BOTTOM
U1500
TP2(1.8V)
TP1(1V)
Circuit Diagram
TP2(1.8V)
TP1(1V)
13