AKG Acoustics IVM4 Mode D'emploi page 39

• You can call up the following details about your transmitter in this order:
- Firmware version (e.g., "F 2.30")
- Frequency band (e.g., "B 7.A5")
- Preset version (e.g., "P 1.76")
• To clean the transmitter and receiver surfaces, use a soft cloth moistened with
water.
1. Use a soft cloth moistened with water to clean the earbud surfaces.
2. To prevent infections, clean the ear molds with a skin compatible antiseptic be-
fore and after use.
Probelm
No sound.
Noise, crackling, unwanted signals. 1. Antenna location.
Distortion.
Momentary loss of sound
("dropouts") at some spots
within performance area.
AKG IVM 4
4 Advanced Functions
5 Cleaning
Possible Cause
1. Power supply is not connected
to transmitter and/or power
outlet.
2. Transmitter/receiver is OFF.
3. Transmitter is not connected to
mixer.
4. Transmitter is tuned to different
frequency than receiver.
5. Receiver batteries are not in-
serted properly.
6. Receiver batteries/battery pack
dead.
7. Transmitter is too far away from
receiver or squelch threshold
setting is too high.
8. Obstructions between transmit-
ter and receiver.
9. Transmitter too close to metal
objects.
2. Interference from other wireless
systems, TV, radio, CB radios,
or defective electrical appli-
ances or installations.
• Interference from other wireless
systems, TV, radio, CB radios,
or defective electrical appli-
ances or installations.
• Antenna location.
«
4 4 . . 2 2 . . 5 5 I I n n f f o o
Refer to fig. A26
on page 136.
5 5 . . 1 1 T T r r a a n n s s m m i i t t t t e e r r a a n n d d
R R e e c c e e i i v v e e r r
5 5 . . 2 2 E E a a r r b b u u d d s s
6 Troubleshooting
Remedy
1. Connect power supply to trans-
mitter and/or power outlet.
2. Switch transmitter/receiver ON.
3. Connect mixer output to trans-
mitter input.
4. Tune transmitter and receiver to
same frequency.
5. Insert batteries conforming to
"+" and "-" marks.
6. Replace batteries/charge bat-
tery pack.
7. Move closer to transmitter or
choose lower squelch threshold
setting.
8. Remove obstructions.
9. Remove objects or place trans-
mitter further away.
1. Relocate transmitter or an-
tenna.
2. Switch off interference sources
or defective appliances or tune
transmitter and receiver to a dif-
ferent frequency; have electrical
installation checked.
• Switch off interference sources
or defective appliances or tune
transmitter and receiver to a dif-
ferent frequency; have electrical
installation checked.
• Relocate transmitter or an-
tenna. If dead spots persist,
mark and avoid them.
39