LG -E450 Service Manual page 114

4.4.1.1 Checking DC Power supply circuit
Check TP1(C108)
+1V8_VRF_MTK is OK?
Check TP2(C112)
+2V85_VRF_MTK is OK?
Check TP3(C125)
+2V8_VTCXO_MTK is OK?
DC Po wer su pply Circuit is OK. See next
Page to check XO circuit
LGE Internal Use Only
START
Yes
Yes
Yes
No
The Problem may be Logic part
Refer to Logic troubleshoot
No
The Problem may be Logic part
Refer to Logic troubleshoot
No
The Problem may be Logic part
Refer to Logic troubleshoot
- 114 - Copyright © 2013 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
Only for training and service purposes