LG D410 Service Manual page 105

USB cable is inserted??
Check VBUS _USB_IN voltage
(4.7V~5V, TP1 : C9402?)
Check -5V0_VREG_BHARGER
(TP2 : C4142?) is high?
Check VREG_L10 and VREG_L20
(TP3 : C2359, TP4 : C2360) is high?
Change the Main PCB
LGE Internal Use Only
Start
Yes
Yes
Yes
Yes
USB_D_P
(TP5: FL101) is high?
Yes
No
insert cable
No
Change TA or uUSB Cable or Lower FPCB
No
Check U4100(PM8226)
No
Check U4100(PM8226)
No
Check Lower FPCB
- 105 - Copyright © 2014 LG Electronics. Inc. All right reserved.
3. TROUBLE SHOOTING
Only for training and service purposes