LG -T370 Service Manual page 69

And check the level change
The LDO outputs at U01
LGE Internal Use Only
START
Check Battery Voltage
> 3.35V
Yes
Push power-on key
into high of POWERKEY
Yes
Check the voltage of
Yes
Is the phone power on?
Yes
The phone will
Properly operating.
No
Charge or Change Battery
No
Check the contact of power key
Or dome-switch
No
Replace U01
VCORE(TP03)=1.V,
VPMU(TP0)=1.V,
VDDMS(TP10)=1.3V,
VPA(TP04)=.85V,
VMMC_V85(TP01)=.85V,
VDDRF(TP05)=.5V
VDDXO(TP09)=1.3V,
VDDTDC(TP08)=1.3V,
VRF1(TP06)=1.8V
No
Replace U01 and
Re-download software
Does it work properly?
Replace the main board
- 69 - Copyright © 01 LG Electronics. Inc. All right reserved.
4. TROUBLE SHOOTING
No
Only for training and service purposes