Only For Training And Service Purposes - LG U370 Service Manual

4. TROUBLE SHOOTING
LGE Internal Use Only
Start
TP1,TP2
2.85 V, 2.7 V exist?
YES
TP3
Is clock ok? 19.2MHz
YES
TP4
Signals exits?
YES
Change the Main board
NO
Change the Main board
NO
Cha nge the X100
NO
Change the M1
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Only for training and service purposes