Troubleshooting - AKG PR4500 User Instructions

6 Troubleshooting

Problem
No sound.
Noise, crackling, unwanted signals.
Distortion.
Momentary loss of sound ("dropouts") in
some places.
Error Messages and Warnings
"REC.ACC"
"ERR.BAT"
"LO BAT"
"NO RF"
All other error messages ("ERR.XXX")
32
Possible Cause
1. No batteries inside transmitter.
2. Transmitter and/or receiver is OFF.
3. Transmitter is tuned to different fre-
quency than receiver.
4. No batteries inside receiver.
5. Receiver batteries are not inserted prop-
erly.
6. Receiver batteries/battery pack dead.
7. Transmitter is too far away from receiver
or squelch threshold setting is too high.
8. Obstructions between transmitter and
receiver.
9. Transmitter too close to metal objects.
1. Antenna location(s).
2. Interference from other wireless sys-
tems, TV, radio, CB radios, or defective
electrical appliances or installations.
• Interference from other wireless sys-
tems, TV, radio, CB radios, or defective
electrical appliances or installations.
• Antenna location(s).
Problem
• When charging BP4000, a recom-
mended RECOVERY cycle was not run.
Remaining battery life is not indicated.
• Volume too high and battery voltage too
low. The limiter is automatically activated
to avoid premature power-down.
• Battery/BP4000 capacity lower than
20%.
1. Received signal level was too low for a
moment (dropout).
2. Radio signal still too weak after 10 sec-
onds, warning comes up again.
• Internal error.
Remedy
1. Insert batteries into transmitter.
2. Switch transmitter/receiver ON.
3. Tune transmitter and receiver to same
frequency.
4. Insert batteries into receiver.
5. Insert batteries conforming to "+" and "-
" marks.
6. Replace batteries/charge battery pack.
7. Move closer to transmitter or choose
lower squelch threshold setting.
8. Remove obstructions.
9. Remove objects or place transmitter fur-
ther away.
1. Relocate transmitter or receiver.
2. Switch off interference sources or defec-
tive appliances or tune transmitter and
receiver to a different frequency; have
electrical installation checked.
• Switch off interference sources or defec-
tive appliances or tune transmitter and
receiver to a different frequency; have
electrical installation checked.
• Relocate transmitter or receiver. If dead
spots persist, try to avoid them.
Remedy
• Press setup control briefly and run
RECOVERY cycle next time you charge
BP4000.
• Press setup control briefly to reset lim-
iter to last active mode. Reduce volume
or replace batteries/charge battery pack.
• Replace batteries/charge BP4000.
1. Press setup control briefly. (Warning dis-
appears.)
2. Relocate transmitter/antenna. If dropouts
persist, mark and avoid critical spots.
1. Switch power to receiver OFF and back
ON after about 10 seconds.
2. Contact your AKG dealer as soon as
possible, even if problem appears to be
corrected.