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RM-217; RM-222
BB Troubleshooting and Manual Tuning Guide
Nokia Customer Care
Backlight troubleshooting
Context
The device has one LED driver that provides current for both the display and keyboard backlights. Brightness
can be adjusted manually, and it affects both the display and keypad. Keyboard backlights can be turned ON/
OFF separately but not without switching on the display lights.
Display and keyboard backlight troubleshooting
Issue 1
COMPANY CONFIDENTIAL
Page 6 –23
Copyright © 2007 Nokia. All rights reserved.
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