The power key (End Call button) has its own dedicated supply line, often highlighted in red on schematics. If the phone won't turn on but the battery is fine, check the power key's track to its specific test point. Maintenance & Soft Fixes
This guide breaks down how to diagnose and fix keypad issues using jumpers and circuit testing.
While we cannot embed images, here is a text-based chart for the :
If the left column (1, 4, 7, *) is not working, the track responsible for this column is broken.
The power key (End Call button) has its own dedicated supply line, often highlighted in red on schematics. If the phone won't turn on but the battery is fine, check the power key's track to its specific test point. Maintenance & Soft Fixes
This guide breaks down how to diagnose and fix keypad issues using jumpers and circuit testing.
While we cannot embed images, here is a text-based chart for the :
If the left column (1, 4, 7, *) is not working, the track responsible for this column is broken.