November 16, 2006
6881094C31-E
5-20
Troubleshooting Charts:
Channel/Zone Select Error
5.8
Channel/Zone Select Error
MAEPF-27402-O
Replace Front
Cover Housing
Assembly
Repair flex or
connections as
needed
U1
checks
good?
Verify operation
of zone knob
using Button Test
flowchart
Signals
check good at U1
on the controls
flex assy.?
Verify codeplug
programming with
RSS. If codeplug
checks OK, then
replace U1.
By studying the
adjacent table against
the channel numbers
that have errors, one
signal may be determined
to be in error. Verify
logic levels at R235,
R236, R239, and R241
for each channel.
Channel
Select Error
No
No
Yes
Yes
Verify similar
operation directly
at U1 on controls
flex assembly
RTA3
(R241)
RTA2
(R239)
RTA1
(R236)
RTA0
(R235)
Channel
Probe Point
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Summary of Contents for ASTRO XTS-5000
Page 7: ...vi Table of Contents November 16 2006 6881094C31 E Notes ...
Page 11: ...x List of Figures November 16 2006 6881094C31 E Notes ...
Page 17: ...November 16 2006 6881094C31 E xvi CommercialWarranty Notes ...
Page 31: ...November 16 2006 6881094C31 E xxx Portable Radio Model Numbering System Notes ...
Page 83: ...November 16 2006 6881094C31 E 3 44 Theory of Operation Encryption Module ...
Page 135: ...November 16 2006 6881094C31 E 5 44 Troubleshooting Charts Secure Hardware Failure Notes ...
Page 175: ...November 16 2006 6881094C31 E 7 32 Troubleshooting Tables List of Board and IC Signals Notes ...
Page 367: ...November 16 2006 6881094C31 E Glossary 10 Notes ...
Page 373: ...Index 6 November 16 2006 6881094C31 E Notes ...