Channel/Zone Select Error - Motorola ASTRO XTS 5000 Detailed Service Manual

6-12

6.13 Channel/Zone Select Error

Select Error
Verify operation
of zone knob
using Button Test
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.
check good at U1
on the controls
flex assy.?
Verify similar
operation directly
at U1 on controls
flex assembly
Repair flex or
connections as
April 15, 2002
Channel
flowchart
Signals
Yes
No
U1
No
checks
good?
Yes
needed
Troubleshooting Charts: Channel/Zone Select Error
Channel RTA3
Probe Point (R241)
1 1
2 1
3 1
4 1
5
1
6 1
7 1
8 1
9 0
10
0
11 0
12 0
13 0
14 0
15 0
16 0
Verify codeplug
programming with
RSS. If codeplug
checks OK, then
replace U1.
Replace Front
Cover Housing
Assembly
RTA2 RTA1 RTA0
(R236)
(R239) (R235)
1
1 1
1
1 0
0
1 1
0
1 0
1
0 1
1
0 0
0
0 1
0
0 0
1
1 1
1
1 0
0
1 1
0
1 0
1
0 1
1
0 0
0
0 1
0
0 0
MAEPF-27402-O
68P81094C31-O