Figure 19 Blank display troubleshooting flow
Backlight troubleshooting
No backlight
The backlight is driven by a DC-DC converter. If any component on this serial path is open circuit, there is no
backlight.
RM-761; RM-799; RM-800
BB Troubleshooting and Manual Tuning Guide
Issue 1 COMPANY CONFIDENTIAL Page 3 – 21
Copyright © 2011 Nokia. All rights reserved.
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