Cleaning; Troubleshooting - AKG WMS 4000 Modo De Empleo

To clean the receiver surfaces, use a soft cloth moistened with water.
Problem
No sound.
Noise, crackling, unwanted signals.
Distortion.
Momentary loss of sound ("dropouts") at
some locations within performance area.
Receiver Error Message
ERR.PRG
ERR.>SYS<
ERR.>USR<
ERR.>FRE<
ERR.>PRE<
ERR.>RF<
Possible Cause
1. AC adapter is not connected to receiver
and/or power outlet.
2. Receiver is OFF.
3. Receiver is not connected to mixer or
amplifier.
4. Microphone or instrument is not connected
to bodypack transmitter.
5. Transmitter is tuned to different frequency
than receiver.
6. Transmitter is "OFF" or transmitter MUTE
switch at "MUTE".
7. Transmitter batteries are not inserted
properly.
8. Transmitter batteries/battery pack dead.
9. Transmitter is too far away from receiver or
squelch threshold setting is too high.
10.Obstructions between transmitter and
receiver.
11.Receiver is invisible from transmitter location.
12.Receiver too close to metal objects.
13.Transmitter and receiver Preset versions
are not identical.
1. Antenna location.
2. Interference from other wireless systems,
TV, radio, CB radios, or defective electrical
appliances or installations.
1. GAIN control on transmitter is set too high
or too low.
2. Interference from other wireless systems,
TV, radio, CB radios, or defective electrical
appliances or installations.
• Antenna location.
Problem
Microcontroller unable to load any program.
Frequency settings cannot be changed.
Last setting cannot be loaded.
Frequencies cannot be set from
Frequency screen.
Error in selected Preset.
PLL error. (Receiver cannot lock on to select-
ed frequency.)

5 Cleaning

6 Troubleshooting

Remedy
1. Connect AC adapter to receiver and/or
power outlet.
2. Push POWER switch to switch receiver ON.
3. Connect receiver output to mixer or ampli-
fier input.
4. Connect microphone or instrument to
audio input on bodypack.
5. Tune transmitter and receiver to the same
frequency.
6. Switch transmitter "ON" or set MUTE
switch to "ON" position.
7. Insert batteries conforming to "+" and "-"
marks.
8. Replace batteries/charge battery pack.
9. Move closer to receiver or choose lower
squelch threshold setting.
10.Remove obstructions.
11.Avoid spots where you cannot see receiver.
12.Remove offending objects or move receiv-
er away.
13.Check Preset versions on transmitter and
receiver.
1. Relocate receiver or antennas.
2. Switch off interference sources or defective
appliances or tune transmitter and receiver
to a different frequency; have electrical
installation checked.
1. Decrease or increase GAIN setting just
enough to stop the distortion.
2. Switch off interference sources or defective
appliances or tune transmitter and receiver
to a different frequency; have electrical
installation checked.
• Relocate receiver or antennas. If dead
spots persist, mark and avoid them.
Remedy
• Contact your AKG Service Center.
1. Switch power to receiver OFF and back
ON after about 10 seconds.
2. If problem persists, contact your AKG
Service Center.
1. Set frequency and squelch threshold again.
2. If problem occurs frequently, contact your
AKG Service Center.
1. Continue with previous setting.
2. Press SETUP control briefly and set fre-
quency from Preset screen.
3. If problem occurs frequently, contact your
AKG Service Center.
1. Continue with previous Preset.
2. Turn SETUP control CW or CCW to select
error-free Preset.
3. If problem occurs frequently, contact your
AKG Service Center.
1. Press SETUP control briefly and set differ-
ent frequency.
2. If problem persists, contact your AKG
Service Center.
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