Dead Keys; No Backlight For Display Or/And Keys - Nokia RM-392 Service Manual

RM-392; RM-393
Baseband Troubleshooting Instructions
Troubleshooting flow

Dead keys

Context
One or more keys has no function.
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.
Issue 1 COMPANY CONFIDENTIAL Page 3 –15
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