Troubleshooting; Troubleshooting For Repeaters - Motorola CDR500 Programming Manual

Symptom
1. Repeater controller dead (power
indicating LED does not light).
2. No field radios can access sys-
tem.
3. First part of message not repeat-
ed.
4. Loss of receiver sensitivity when
transmit radio is keyed (repeater
toggles from transmit to receive
repeatedly when attempting to
communicate through it).
5. Repeater toggles from transmit
to receive cyclically without an
input signal to the receive radio.
March, 2001
Table 13-1. Troubleshooting for Repeaters (General)
Problem(s)
1a. Power supply ac line cord not
plugged into ac mains outlet.
1b. Receive radio not turned ON.
1c. Loose or bad repeater cable from
radio to controller.
1d. Open fuse in controller (if appli-
cable).
2a. Receive radio programmed with
wrong TPL/DPL code.
2b. Incorrect I/O programming of
accessory connector of receive
radio or transmit radio.
2c. Loose or bad repeater cable from
receive radio to controller.
2d. Incorrect programming of field
radios.
2e. Repeater controller not enabled
or set up (if applicable).
3. User speaking too soon after
pressing PTT.
4a. Leaky coaxial cable(s).
4b. Loose antenna connector(s).
4c. Faulty antenna connector(s).
4d. Duplexer not tuned correctly (if
applicable).
4e. Inadequate distance between re-
ceiver and transmitter antennas
(if applicable).
4f. Improper or faulty coaxial ca-
ble(s) to antenna(s).
5. Transmit radio programmed
with "COR" signal on same pin
of accessory connector as receive
radio and is receiving a signal.
6864110R66-O
Section 13

Troubleshooting

Possible Solution(s)
1a. Plug power supply cord into ac
mains outlet.
1b. Turn receive radio ON.
1c. Check repeater cable connec-
tions to radio and controller or
replace repeater cable, if neces-
sary.
1d. Check fuse in controller and re-
place as necessary.
2a. Check TPL/DPL code of receive
radio and reprogram, if neces-
sary.
2b. Check accessory connectors and
reprogram, if necessary.
2c. Check repeater cable connec-
tions to radio and controller and
replace repeater cable if neces-
sary.
2d. Check programming on field ra-
dios and reprogram, if neces-
sary.
2e. Check repeater enable and setup
condition(s).
3. Delay conversation to allow for
delays in system due to:
• TPL/DPL decoding.
• Requirements of signalling
systems.
4a. Check coaxial cables and replace
if necessary.
4b. Check antenna connector(s) and
replace, if necessary.
4c. Replace antenna connector(s).
4d. Re-tune duplexer.
4e. Read "Antenna Spacing" on
page 1-5 and adjust distance be-
tween antennas.
4f. Read "Cables" on page 1-5 to de-
termine the types of cables re-
quired or replace cable(s), if
necessary.
5. Reprogram transmit radio acces-
sory connector pin to "NULL."
13-1