Motorola ATS 3000 User Manual

February 14, 2012 6816985H01-F
6.4-12 700/800 MHz Troubleshooting Charts: Top/Side Button Error Troubleshooting Chart
6.4.13Top/Side Button Error Troubleshooting Chart
MAEPF-27338-O
Use RSS
to enable
button
Replace
U701
Replace
buttons and/or
switch
Verify contact
with circuit
board
Using RSS,
verify problem
button is enabled
for function
Levels
correct?
Verify physical
operation of
buttons
Buttons
OK?
Button
check OK?
Buttons
Enabled?
Using a voltmeter, measure the voltages
at the resistor while depressing the
following keys:
Button
Emergency
Top Side
Middle Side
Bottom Side
Voltage
2.50V to 0V
2.70V to 0V
2.70V to 0V
3.00V to 0V
Resistor
R511
R510
R509
R508
Top/Side
Button Test
Synopsis
This chart relates to a failure in
reading the buttons. Side Button 1,
Side Button 2, or Side Button 3.
Basic failure modes are as follows:
1) Bad connection
2) Defective Switch
3) Defective MAKO IC (U701)
Verify operation
of zone knob per
"Button Test"
flow chart
No
No
Yes
Yes
No
No
Yes
Yes

Motorola ATS 3000 Specifications

General

Brand	Motorola
Model	ATS 3000
Category	Two-Way Radio
Language	English