Display Backlights Troubleshooting - Nokia MOBILE TERMINAL Service Manual

RM-356
BB Troubleshooting and Manual Tuning Guide

Display backlights troubleshooting

Context
The device has three LED drivers. One of the drivers provides current for the display backlights. The display
backlights can be turned ON (100% max.) and OFF (0%) with PWM.
The two other LED drivers provide current for the keyboard backlights. The keyboard backlights can be turned
ON/OFF separately.
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