Check Input Power Path
Check Input
Power Path
Measure Input Voltages
Yes
No
VBUS ≈ 5V
Yes
Inspect/Replace
B_PLUS ≈ 3.5V
No
USB Connector
Inspect/Replace
Check PMIC
PMI (U2500)
(U2000)
SMB (U540)
Moto X Force/DROID Turbo 2
MOTOROLA CONFIDENTIAL
BASEBAND TROUBLESHOOTING GUIDES