Motorola APX 2000 Detailed Service Manual

Troubleshooting Charts: Side Button Error 5-27
5.10 Side Button Error
SIDE BUTTON
TEST
Verify operation of buttons by using
Button Test” flowchart
Verify physical connection between the side
controls flex, Front kit flex, keypad and
Main Board.. Re-run button test.
Use a voltmeter to measure voltage at the
following resistors on the Main board
(1.875V @ each point):
R4005 - PTT, R4006 - Side button 1,
R4007 - Side button 2, R6101 - Monitor
Replace main
chassis
Button check
OK?
Are the
voltages
present?
END
Follow troubleshooting
guide 5.4.4
Verify buttons
enabled in CPS
Yes
Yes
Yes
No
No
No
Button check
OK?
Monitor thr voltages at each resistor while
pressing the corresponding button. The
voltages 0V while the button is pressed.
Voltages = 0 while
button press?
Re-run button test
Yes
No

Motorola APX 2000 Specifications

General

Brand	Motorola
Model	APX 2000
Category	Two-Way Radio
Language	English