
10-14
Chart 23 . Zone/Channel Select Error
Verify codeplug
programming
with RSS. If
codeplug checks
good replace
U206.
Channel RTA3 RTA2 RTA1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
RTA0
1
0 0
2
0 0
3
0 0
4
0 0
5
0 1
6
0 1
7
0 1
8
0 1
9
1 0
10
1 0
11
1 0
12
1 0
13
1 1
14
1 1
15
1 1
16
1 1
Synopsis
This chart relates to a failure
in reading the zone/channel
select knob. Basic Failure
modes are as follows:
1) Failure in flex circuit.
2) Bad connection.
3) Defective switch.
4) Defective port in SLIC.
Zone/Channel Select
Error.
Verify operation of
zone knob per "Button
Check" flow chart C.20.
Signals
check good
at U206?
No
By studying the
adjacent chart against
the channel numbers
which have errors,
one signal may be
determined to be in
error or verify logic
levels at PH3-PH0 at
U206 for each
channel..
Yes
Verify similar
operation directly at
S902.
S902 checks
good?
Replace S902.
Repair flex or
connections as needed.
Yes
MAEPF-24402-A
No
Chart 24 . Top/Side Button Error
Synopsis
This chart relates to a failure
in reading the buttons: Top, Top
Side, Side Button 1, or Side
Button 2. Basic Failure modes
are as follows:
1) Failure in flex circuit
consisting of R902, R903,
R904, R201.
2) Bad connection.
3) Defective switch.
4) Defective A/D port in host
µ
C.
Use RSS to
enable button.
Top/Side Button
Error
Using RSS, verify
problem button is
enabled for function.
Button
enabled?
Yes
No
Using a voltmeter,
measure the voltage at
PE3 of U204 while
depressing the following
button:
Button
Nom. VDC
Top
0.00
Top Side
2.38
Side 1
3.06
Side 2
3.77
Levels
correct?
Replace U204.
Verify connections
and control top/PTT
flex circuit
consisting of
R902, R903 ,R904,
R201 and repair as
necessary.
No
Yes
Verify
operation of buttons
S903, S905, S906,
and S907.
Buttons OK?
Replace frame
assembly.
No
Yes
MAEPF-24400-A
Verify operation of
buttons per "Button
Check" flow chart C.20.
Buttons
check good?
Yes
No
Summary of Contents for ASTRO Digital Saber
Page 1: ... Digital SABER and R Portable Radios Detailed Service Manual ...
Page 19: ...1 14 Notes ...
Page 31: ...4 6 Notes ...
Page 37: ...5 6 Notes ...
Page 43: ...6 6 Notes ...
Page 81: ...12 4 Notes ...
Page 82: ... 6881076C10 68P81076C10 A Motorola 8000 West Sunrise Boulevard Fort Lauderdale Florida 33322 ...
Page 109: ...13 1 Block Diagrams Schematics Electrical Parts Lists and Circuit Board Details 13 ...
Page 111: ...13 3 NLD8892R VHF Transceiver Board Schematic Diagram 63B81094C71 O ...
Page 120: ...13 12 NUF6411K 800 MHz Transceiver Board Schematic Diagram 63B81094C75 O ...