LG -A230 Service Manual page 72

CHECKING FLOW
Check Battery Voltage
> 3.35V
Push power-on key
And check the level change
into high of POWERKEY
Check the voltage of
The LDO outputs at U101
Is the phone power on?
The phone will
Properly operating.
LGE Internal Use Only
START
YES
YES
YES
YES
NO
Charge or Change Battery
NO
Check the contact of power key
Or dome-switch
NO
Replace 1201
VCORE=1.2V, VPMU=1.2V, VDDMS=1.3V
VAUX=2.85V,VMMC=2.85V,
VDD_RF2=2.5V
VDDXO=1.3V, VDDTDC=1.3V, VRF1=1.8V
NO
Replace U101 and
Re-download software
Does it work properly?
Replace the main board
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4. TROUBLE SHOOTING
NO
Only for training and service purposes