Motorola Moto X Force Troubleshooting Manual page 23

Display Troubleshooting
• Check 55pin display ZIF connector
1. Properly inserted
2. Any damage to ZIF receptacle on main PCB or plug on disp flex
tail
3. Swap in known good main PCB or good disp module to see if
issue follows main PCB or display flex
• If the issue follows main PCB,
a. Check DISP_VIO_F voltage 1.8V typ
b. Check DISP_VCI_F voltage 3.1V typ
c.
Check voltages from DCDC converter U5350 at J5300 conn
(DISP_ELVDD 4.563-4.637VDC / Pins6-9, DISP_ELVSS -2.45V to -2.55VDC / Pins3-5,
DISP_AVDD 7.2-7.37VDC / Pin11)
d. Check DISP_RST_N, should be High (1.8V) / Pin54 at J5300
conn
• If the issue follows Display Module, replace the module.
MOTOROLA CONFIDENTIAL
(1.65-1.95VDC) at Pin17 of J5300
(2.9-3.3VDC) Pin10 of J5300
BASEBAND TROUBLESHOOTING GUIDES
Moto X Force/DROID Turbo 2