Only For Training And Service Purposes - LG MG370 Service Manual

4. TROUBLE SHOOTING
CHECKING FLOW
The LDO outputs at U103
Check the clock signal on X100
LGE Internal Use Only
START
Check Battery Voltage
> 3.35V
YES
Push power-on key
And check the level change
of PWRKEY
YES
Check the voltage of
YES
32.768KHz/0.5V
YES
THE PHONE WILL
POWER ON.
NO
Charge or Change Battery
NO
Check the contact of power key
Or dome-switch
Replace U103
NO
Replace U103
Copyright © 2007 LG Electronics. Inc. All right reserved.
- 46 -

Only for training and service purposes