5.10 Side Button Error - Motorola APX 5000 Service Manual

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Troubleshooting Charts: Side Button Error

5.10 Side Button Error

following resistors on the expansion board (1.875

R2009 – PTT, R2010 – Side button 1, R2011 –

Verify operation of buttons by using

Button Test" flowchart

Button check

Verify physical connection between the side

controls flex, expansion board, and controller

board. Re-run button test.

Button check

Use a voltmeter to measure voltage at the

V @ each point):

Side button 2, R2012 - Monitor

Monitor the voltages at each resistor while

pressing the corresponding button. The

voltages 0 V while the button is pressed.

Voltages = 0 while

button press?

Replace main

Verify buttons

enabled in CPS

Replace controller

Re-run button test

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