6 Troubleshooting
Problem
No sound.
Noise, crackling, unwanted signals.
Distortion.
Momentary loss of sound ("dropouts") at some points within performance area.
Error Messages
| ERR.>SYS< |
only |
|
Receiver | ERR.>PRE< |
| |
| TXBand |
|
|
transmitter | ERR.>USR< |
| |
and | ERR.>RF< |
Receiver | Err.>IR< |
| |
|
|
only | |
Transmitter | >ChArGE< |
| |
| (rechargeable battery only) |
|
|
32
| Possible Cause |
| Remedy |
1. | AC adapter is not connected to receiver | 1. | Connect AC adapter to receiver and/or |
| and/or power outlet. |
| power outlet. |
2. | Receiver is OFF. | 2. | Push POWER switch to switch receiver ON. |
3. | Receiver is not connected to mixer or | 3. | Connect receiver output to mixer or ampli- |
| amplifier. |
| fier input. |
4. | Microphone or instrument is not connected | 4. | Connect microphone or instrument to |
| to bodypack transmitter. |
| audio input on bodypack. |
5. | Transmitter is tuned to different frequency | 5. | Tune transmitter and receiver to the same |
| than receiver. |
| frequency. |
6. | Transmitter is "OFF" or transmitter MUTE | 6. | Switch transmitter "ON" or set MUTE |
| switch at "MUTE". |
| switch to ”ON” position. |
7. | Transmitter batteries are not inserted | 7. | Insert batteries conforming to "+" and |
| properly. |
| marks. |
8. | Transmitter batteries/battery pack dead. | 8. | Replace batteries/charge battery pack. |
9. | Transmitter is too far away from receiver or | 9. | Move closer to receiver or choose lower |
| squelch threshold setting is too high. |
| squelch threshold setting. |
10.Obstructions between transmitter and | 10.Remove obstructions. | ||
| receiver. |
|
|
11.Receiver is invisible from transmitter location. | 11.Avoid spots where you cannot see receiver. | ||
12.Receiver too close to metal objects. | 12.Remove offending objects or move receiv- | ||
|
|
| er away. |
13.Transmitter and receiver Preset versions | 13.Check Preset versions on transmitter and | ||
| are not identical. |
| receiver. |
1. | Antenna location. | 1. | Relocate receiver or antennas. |
2. | Interference from other wireless systems, | 2. | Switch off interference sources or defective |
| TV, radio, CB radios, or defective electrical |
| appliances or tune transmitter and receiver |
| appliances or installations. |
| to a different frequency; have electrical |
|
|
| installation checked. |
1. | GAIN control on transmitter is set too high | 1. | Decrease or increase GAIN setting just |
| or too low. |
| enough to stop the distortion. |
2. | Interference from other wireless systems, | 2. | Switch off interference sources or defective |
| TV, radio, CB radios, or defective electrical |
| appliances or tune transmitter and receiver |
| appliances or installations. |
| to a different frequency; have electrical |
|
|
| installation checked. |
• | Antenna location. | • | Relocate receiver or antennas. If dead |
|
|
| spots persist, mark and avoid them. |
| Problem |
| Remedy |
• | Frequency settings cannot be changed. | 1. | Switch power to receiver OFF and back |
|
|
| ON after about 10 seconds. |
|
| 2. | If problem persists, contact your AKG |
|
|
| Service Center. |
• | Error in selected Preset. | 1. | Continue with previous Preset. |
|
| 2. | Select |
|
| 3. | If problem occurs frequently, contact your |
|
|
| AKG Service Center. |
1. | Transmitter frequency band is not identical | 1. | Use transmitter with the same frequency |
| with receiver frequency band. |
| band as the receiver. |
2. | RF output too high/low. | 2. | Use transmitter with lower/higher Rf out- |
|
|
| put. |
• | Last setting cannot be loaded. | 1. | Set frequency and squelch threshold again. |
|
| 2. | If problem occurs frequently, contact your |
|
|
| AKG Service Center. |
• | PLL error. (Receiver cannot lock on to | 1. | Set different frequency. |
| selected frequency.) | 2. | If problem persists, contact your AKG |
|
|
| Service Center. |
• | Infrared transmisison failed. | • | Point transmitter infrared sensor directly at |
|
|
| receiver infrared emitter from a distance of |
|
|
| approx. 2 inches (5 cm). |
1. | Transmitter cannot identify battery as dry | 1. | Remove battery and reinsert after approx. |
| or rechargeable type. |
| five seconds. |
2. | Transmitter was switched on during charg- | 2. | Remove transmitter from charger, switch off, |
| ing. |
| and restart charging (cf. CU 400 manual) |
• | Battery is not fully charged. |
|
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