Motorola CDR500 Programming Manual page 86

Troubleshooting
Symptom
6. "Tinny" repeated audio (lacks
low frequencies).
7. "Bassy" repeated audio (lacks
high frequencies).
8. Audio OK using local micro-
phone on a repeater radio, but
background audio/noise heard
when repeater is operating.
9. Partial (RapidCall) PTT ID mes-
sage repeated.
10. Fan in the repeater runs all the
time.
11. Fan in CDR700 turns on inter-
mittently even though radios are
turned off.
12. Repeater does not power-up
when AC mains returns
Symptom
1. No speaker audio heard from re-
ceive radio.
2. Receive radio stays ON with ra-
dio power switch OFF.
3. Receive radio constantly keyed. 3a. Accessory connector of receive
13-2
Table 13-1. Troubleshooting for Repeaters (General) (Cont'd.)
6. Flat receive audio selected with
microphone transmit audio.
7. EIA de-emphasized receive au-
dio selected with flat transmit
audio.
8. Microphone with "live," ungat-
ed audio path (such as a hand-
set) plugged into repeater radio.
9a. Pre-time too short.
9b. "Pre" PTT ID used.
10a. Fan switch on CDR700 power
supply in "Continuous ON" po-
sition.
10b. Not a problem in CDR500.
10c. Battery revert module installed
in CDR700.
11. No problem. Power supply has
heated to point of requiring
cooling.
12a. HKKN4000 Power Sensing Ca-
ble kit not installed.
12b. One or both radios not pro-
grammed for ignition sense.
Table 13-2. Troubleshooting for Repeater Receive Radio
1a. Volume of receive radio turned
down.
1b. Speaker not connected in control
head.
1c. External speaker (if applicable)
not connected between pins 1
and 16 of accessory connector on
controller.
1d. Defective speaker (internal or
external, if applicable).
2. Voltage entering receive radio
ignition sense (pin 10) and re-
ceive radio programmed for
"Follow Ignition Only" ignition
sensing.
and/or transmit radio not pro-
grammed correctly or not oper-
ating correctly.
3b. Receive radio PTT pin pulled
LOW by an accessory.
Problem(s)
Problem
6864110R66-O
CDR500 & CDR700 Repeater Service Manual
Possible Solution(s)
6. Reprogram receive radio for
"Filtered Audio".
7. Reprogram receive radio for
"Flat Audio".
8. Remove microphone or handset.
9a. Increase pre-time in field radio.
9b. Use "Post" PTT ID.
10a. Move fan switch to "Thermo
Control" position.
10b. The CDR500 is designed with
continuous cooling.
10c. Nature of the beast – fan runs
continuously regardless of fan
power switch on power supply.
11. Unplug CDR700 repeater from
ac mains (less expensive than an
exorcist).
12a. Install power sensing cable.
12b. Reprogram radios for "Follow
Ignition Only" or "On/Off & Ig-
nition" sensing.
Solution
1a. Turn up volume.
1b. Connect speaker.
1c. Connect external speaker be-
tween pins 1 and 16.
1d. Check speaker and replace if
necessary.
2. Reprogram receive radio to dis-
able ignition sensing. This is
NOT recommended if repeater
is NOT mounted in a readily ac-
cessible location.
3a. Check programming of accesso-
ry connector and reprogram, if
necessary.
3b. Remove or correct accessory.
March, 2001