6816985H01-F February 14, 2012
VHF Troubleshooting Charts: Button Test Troubleshooting Chart 6.1-9
6.1.10Button Test Troubleshooting Chart
MAEPF-27335-O
End
Keys
correct?
Check signal
path integrity of
button in question
Button Test
Place radio in Test Mode.
Press Top Side Button
(Monitor) so display reads
CH TEST. This places the
radio in button test mode.
Then, press the orange
(Emergency) Top Button
to verify codes displayed
as shown in the Button
Table at right
No
Yes
This chart relates to a failure in the button functions.
Basic Failure modes are as follows:
1) Failure in keypad flex assembly.
2) Bad Connection
3) Defective Switches or pads
4) Defective MAKO IC (U701)
Synopsis
Button Table
Button
PTT
Top Button (Emergency)
Side Button 1 (Monitor)
Side Button 2
Side Button 3
Channel Select (Frequency)
Volume Control Knob
Zone Select
Code
1/ 0-1
3/ 0-1
96/ 0-1
97/ 0-1
98/ 0-1
4/ 0-15
0/ 0-220
65/ 0-2
Chart
C.6
C.6
C.6
C.6
C.8
C.7
C.8
128/1
130/1
135/1
136/1
HOME App
129/1
134/1
132/1
131/1
133/1
53/1
5JKL
52/1
4GHI
54/1
6MNO
50/1
2ABC
49/1
1
51/1
3DEF
48/1
0
58/1
*
59/1
#
56/1
8TUV
55/1
7PRS
57/1
9XYZ
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