4. TROUBLE SHOOTING
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Only for training and service purposes
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START
Battery voltage higher than 3.5V?
Change or charging the Battery
No
Yes
Change the main board
Power Key is damaged?
Check the Power Key
No
Yes
Press PWR Key
Check TP1 high to low?
Change the Power Key
No
Yes
Is clock OK?
X701(TP9) : 32.768Khz
Change the TCXO and X-tal
No
Yes
VSEL_1.8V(TP2)
VSEL_VMEM(TP3)
VSEL_2.1V(TP4)
VSEL_1.29V(TP5)
VCORE1_OMAP_MPU(TP6)
VCORE2_OMAP_IVAUD(TP7)
VSEL_VCORE3(TP8) up?
Change the Main board
Yes
No