AKG IVM4500 Specifications download pdf (Page 40)

6 Troubleshooting

IVM

4500

40

Receiver Error Messages and

Warnings Problem Remedy

"REC.ACC" • When charging BP 4000, a rec-

ommended RECOVERY cycle

was not run. Remaining battery

life is not indicated.

• Press Jog switch briefly and run

RECOVERY cycle next time you

charge BP 4000.

"ERR.BAT" • Volume too high and battery

voltage too low. SPR 4500 lim-

iter is automatically activated to

avoid premature power-down.

• Press Jog switch briefly to reset

limiter to last active mode. Re-

duce volume or replace batter-

ies/charge battery pack.

"LO BAT" • Battery/BP 4000 capacity lower

than 20%.

• Replace batteries/

charge BP 4000.

"NO RF" 1. Received signal level was too

low for a moment (dropout).

2. Radio signal still too weak after

10 seconds, warning comes up

again.

1. Press Jog switch briefly. (Warn-

ing disappears.)

2. Relocate transmitter/antenna. If

dropouts persist, mark and

avoid critical spots.

All other error messages

("ERR.XXX")

• Internal error. 1. Switch power to receiver OFF

and back ON after about 10

seconds.

2. Contact your AKG dealer as

soon as possible, even if prob-

lem appears to be corrected.

Receiver

Transmitter

and receiver

Probelm Possible Cause Remedy

No sound. 1. Power supply is not connected

t

o transmitter and/or power

o

utlet.

2

. RF output is OFF.

3. Receiver is OFF.

4

. Transmitter is not connected to

mixer.

5. Transmitter is tuned to different

frequency than receiver.

6. Receiver batteries are not in-

serted properly.

7. Receiver batteries/battery pack

d

ead.

8

. Transmitter is too far away from

receiver or squelch threshold

s

etting is too high.

9. Obstructions between transmit-

ter and receiver.

10. Transmitter too close to metal

objects.

1. Connect power supply to trans-

m

itter and/or power outlet.

2

. Activate RF output (press

RF ON/OFF).

3. Switch receiver ON.

4

. Connect mixer output to trans-

mitter input.

5. Tune transmitter and receiver to

same frequency.

6. Insert batteries conforming to

"+" and "-" marks.

7. Replace batteries/charge bat-

t

ery pack.

8

. Move closer to transmitter or

choose lower squelch threshold

s

etting.

9. Remove obstructions.

10. Remove objects or place trans-

mitter further away.

Noise, crackling, unwanted signals. 1. Antenna location.

2. Interference from other wireless

systems, TV, radio, CB radios,

or defective electrical appli-

ances or installations.

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.

Distortion. • Interference from other wireless

systems, TV, radio, CB radios,

or defective electrical appli-

ances or installations.

• Switch off interference sources

or defective appliances or tune

transmitter and receiver to a dif-

ferent frequency; have electrical

installation checked.

Momentary loss of sound

("dropouts") at some spots

within performance area.

• Antenna location. • Relocate transmitter or an-

tenna. If dead spots persist,

mark and avoid them.

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