5.10 Side Button Error - Motorola APX 7000 Detailed Service Manual

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 –
SIDE BUTTON
TEST
Verify operation of buttons by using
Button Test" flowchart
Button check
OK?
Verify physical connection between the side
controls flex, expansion board, and controller
board. Re-run button test.
Button check
OK?
Use a voltmeter to measure voltage at the
V @ each point):
Side button 2, R2012 - Monitor
Are the
voltages
present?
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
chassis
Yes
No
Yes
No
No
Yes
Yes
No
Verify buttons
enabled in CPS
END
Replace controller
board
Re-run button test
5-25