AKG Acoustics HEARO 888 specifications Troubleshooting, Problem, Possible Cause, Remedy

6 Troubleshooting

Problem		Possible Cause		Remedy
	1.	AC adapter is not connected to transmitter	1.	Connect AC adapter to transmitter and/or
		and/or AC outlet.		AC outlet.
	2.	Transmitter is OFF or not connected to	2.	Switch transmitter on or connect to audio
		audio source.		source.
	3.	Connected audio source is switched off.	3.	Switch audio source on to feed signal to
				transmitter input.
	4.	Wrong input selected.	4.	Activate the input that is actually used (see
				sections 4.3.1 and 4.3.2).
No sound.	5.	INPUT control is at zero.	5.	Turn up INPUT LEVEL control (refer to sec-
				tions 4.2.1 and 4.2.2)
	6.	Volume control on audio source is set too	6.	Increase audio source volume to the point
		low.		that transmitter switches on.
	7.	Batteries in wireless headphones are low.	7.	Charge batteries.
	8.	Wireless headphones are switched off.	8.	Switch wireless headphones on.
	9.	Volume control on headphones is at zero.	9.	Set volume control to desired level.
	10.Transmitter cannot process digital input		10.Set DVD player output to "PCM", "D-
		signal.		PCM", or "Dolby Digital PCM". (Refer to
				DVD player manual.)
	1.	Connected audio source operates in mono	1.	Switch audio source to stereo mode.
Mono sound		mode.
	2.	Transmitter is not correctly connected to	2.	Check cable connection between transmit-
		audio source.		ter and audio source.
	1.	Audio level at transmitter input is too low.	1.	Turn up audio source volume control
				and/or INPUT LEVEL control on transmit-
Noise				ter.
	2.	Input signal is noisy.	2.	Check audio source.
	3.	Batteries in wireless headphones are low.	3.	Charge batteries.
	1.	Audio level at transmitter input is too high.	1.	Turn down audio source volume control
Distorted sound				and/or INPUT control on transmitter.
	2.	Batteries in wireless headphones are low.	2.	Charge batteries.
	1.	Electrical appliances with poor interference	1.	Switch off any "suspicious" appliances (if
Intermodulation noise		protection.		possible).
	2.	Audio source or sound carrier defective.	2.	Check audio source or sound carrier.
Headphones receive unwanted	•	A neighbor uses similar UHF headphones.	•	Set transmitter and headphones to same
transmitters				channel.
Overemphasized bass or treble range	•	Bass or treble control settings on audio	•	Readjust bass or treble controls.
		source.
	1.	Transmitter and headphone carrier fre-	1.	Set transmitter and headphones to same
Beep sounds heard on wireless		quencies do not match.		channel.
headphones	2.	No or weak reception.	2.	Change listening position, move closer to
				transmitter.
	1.	Interference from other equipment.	1.	Set transmitter and headphones to a differ-
Momentary reception dropouts				ent channel.
(crackling)	2.	Signal too weak due to reception distur-	2.	Change listening position, move closer to
		bances.		transmitter.
DIGITAL label flashes twice, transmitter	•	Transmitter cannot process input signal.	•	Set DVD player output to "PCM", "D-
switches from digital to analog input.				PCM", or "Dolby Digital PCM". (Refer to
				DVD player manual.)

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HEARO 888 DIGITAL