Motorola XTS 2250 User Manual

February 14, 2012 6816985H01-F
6.1-12 VHF Troubleshooting Charts: Top/Side Button Error Troubleshooting Chart
6.1.13Top/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 XTS 2250 Specifications

General

Power Output	VHF: 1-5W, UHF: 1-4W
IP Rating	IP54
Battery Type	Li-Ion
Display	Yes
Trunking	Yes
System Type	Analog/Digital
Operating Temperature	-30°C to +60°C
Encryption	Yes
Weight	350 g (with battery)
Dimensions	137 mm x 58 mm x 38 mm with standard battery