LG D686 Service Manual page 25

3.1.1.1 Checking DC Power supply circuit
+1V8_VRF_MTK is OK?
+2V85_VRF_MTK is OK?
+2V8_VTCXO_MTK is OK?
DC Power Supply Circuit is OK
See Next page to Check XO Circuit
LGE Internal Use Only
START
Check TP1(C109)
Yes
Check TP2(C103)
Yes
Check TP3(C118)
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
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3. TROUBLE SHOOTING
Only for training and service purposes