Nokia 105 Rm 908 Keypad Ways [DIRECT]

Usually connected to a row or column shared with other keys.

Every button has an inner and an outer circle.

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 nokia 105 rm 908 keypad ways

Locate a working point on the same line (often a test point on the back of the board or a series resistor).

Failed series resistors or capacitors along the keypad lines can disrupt the signal. Usually connected to a row or column shared with other keys

Since the keypad lines lead directly to the MediaTek CPU, a loose or damaged chip can cause entire rows or columns of buttons to fail. Troubleshooting the Keypad Ways

To identify where a connection is broken, use a multimeter set to . If the phone won't turn on but the

Physical drops or internal wear can result in broken "ways" or signal lines on the PCB.