LG -P940 Service Manual page 101

Battery voltage higher than 3.5V?
Check TP1 high to low?
Power Key is damaged?
VCORE1_OMAP_MPU(TP6)
VCORE_OMAP_IVAUD(TP7)
VSEL_VCORE3(TP8) up?
X701(TP9) : 3.768Khz
Change the main board
LGE Internal Use Only
START
Yes
Press PWR Key
Yes
Yes
VSEL_1.8V(TP)
VSEL_VMEM(TP3)
VSEL_.1V(TP4)
VSEL_1.9V(TP5)
Yes
Is clock OK?
Yes
No
Change or charging the Battery
No
Check the Power Key
No
Change the Power Key
No
Change the Main board
No
Change the TCXO and X-tal
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4. TROUBLE SHOOTING
Only for training and service purposes