LG -A100 Service Manual page 64

CHECKING FLOW
START
Check Battery Voltage
> 3.35V
Push power-on key
And check the TP1 level change
into high of POWERKEY
Check the voltage of
The LDO outputs at U101
Re-download software
Does it downloaded
normally?
Is the phone power on?
The phone will
Properly operating.
LGE Internal Use Only
NO
YES
NO
YES
NO
YES
NO
YES
YES
Plug Charge or Change Battery
Check the contact of power key
Or dome-switch
TP6 :VCORE=1.2V, TP4 : VPMU=1.2V. TP1 :
VRTC=2.3V, TP3: VDD_1.8V=1.8V, TP7:
VAUX=2.8V, TP8: VDDXO=1.3V, TP5: VREF=1.2V
Replace U103
YES
Does it work properly?
Replace the main board
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4. TROUBLE SHOOTING
Replace U102
NO
NO
Only for training and service purposes