Nokia RM-340 - No Backlight for Display Or;And Keys

Troubleshooting flow
No backlight for display or/and keys
Context
There are 3 kinds of statuses: No backlight for both display and keys; No backlight for only display; No
backlight for only keys.
Troubleshooting flow
RM-340; RM-341
Baseband Troubleshooting Instructions
Page 3 –18 COMPANY CONFIDENTIAL Issue 1
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