Numerical Keypad Illumination Troubleshooting; Display Module Troubleshooting; General Instructions For Display Troubleshooting - Nokia RM-721 Service Manual

RM-721; RM-722
BB Troubleshooting and Manual Tuning Guide

Numerical keypad illumination troubleshooting

Troubleshooting flow

Display module troubleshooting

General instructions for display troubleshooting

Context
• The display is in a normal mode when the phone is in active use.
• Display is in a sleep mode when the phone is in the screen saver mode.
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