No Display/-Backlight/Poor Picture Quality - Motorola MotoRAZR maxx V6 Manual

Motorola GmbH, Mobile Devices, CSS Center
Title: Troubleshooting-Guide MotoRAZR maxx V6

No display/-backlight/poor picture quality

Probable cause:
a) Transceiver board assembly defective
Verification: Temporarily replace the flip assembly with a known good flip assembly. If the
fault has not been cleared, it is because of a defective transceiver board assembly. Forward
to an authorized Level 3 Service Center or proceed to
b) Transceiver board connections faulty
Remove rear housing assy from unit and check general condition of flexible printed cable
(keyboard flex assy). If the flex is good, check that the flex connector is fully pressed down.
c) Keyboard flex assy defective
Remove flip cover. Unseat the display module assembly flex connector from its socket and
temporarily connect the display module assembly and transceiver board assembly with a
known good keyboard flex assy as shown on Figure 9. Check function of both displays. If the
fault has been cleared, reassemble flip assy with new keyboard flex assy.
d) Main display or CLI display faulty
Check function of both displays. If just one of them has no function, most likely that display
itself is defective
e) Flip PCB defective
If the fault has not been cleared with one of the previous steps a), b), c) or d), it is most likely
a defective Flip PCB.
Repair Support Information
Doc. No:
Version:
Date:
Page:
level 3 troubleshooting.
Figure 11
© Copyright 2003-2007 Motorola Inc. All Rights reserved.
Motorola internal use
TSG_3G_V6
1.0
23.07.2007
12 / 40