Motorola Mototrbo - 2.2 Display

Color Display Model Control Head Troubleshooting Flow Chart 2-3
2.2 Display
Power Up Alert Tone is OK but display shows nothing.
LCD flex cable
inserted and locked
down in J6401?
Power on radio, check display backlight.
LCD Backlight is on?
Reflash control
head software.
Backlight is on after
power up?
Replace control
head with a known
functional unit.
Display
Working?
Update radio with
latest firmware and
codeplugs.
Yes
No
Replace control head
Replace Display
Yes
No
No
Yes
Replace Display
Display
Working?
Yes
Done.
No
Re-insert and lock down
LCD flex cable.
No
Yes