Troubleshooting - AKG SR 4500 Modo De Empleo

Problem
No sound.
Noise, crackling, unwanted signals.
Distortion.
Momentary loss of sound ("dropouts") at some loca-
tions within performance area.
Receiver Error Message
ERR.>PRG<
ERR.>SYS<
ERR.>USR<
ERR.>FRE<
ERR.>PRE<
ERR.>RF<
28

6 Troubleshooting

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 body-
pack transmitter.
5. Transmitter is tuned to different frequency than re-
ceiver.
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 iden-
tical.
1. Antenna location.
2. Interference from other wireless systems, TV, radio, CB
radios, or defective electrical appliances or installa-
tions.
3. Power voltage deviations.
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 installa-
tions.
• 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 menu.
• Error in selected Preset.
• PLL error. (Receiver cannot lock on to selected fre-
quency.)
Remedy
1. Connect AC adapter to receiver and/or power outlet.
2. Push ON/OFF switch to switch receiver ON.
3. Connect receiver output to mixer or amplifier 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 receiver 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 fre-
quency; have electrical installation checked.
3. Check power voltage and set up power supply con-
forming to specifications of connected equipment.
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 fre-
quency; 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 frequency from
Preset menu.
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 different frequency.
2. If problem persists, contact your AKG Service Center.
SR 4500