Onkyo TX-DS474 appendix Troubleshooting guide, Cause, Remedy, page

Troubleshooting guide

If a problem occurs while you are using the remote controller, first try to operate the front panel controls on the main unit to make sure that it is not due to a malfunction (or worn out batteries) in the remote controller.

		Trouble			Cause	Remedy	See
							page
No power.					• Power cord is disconnected.	• Connect power cord.	11
					• There is external noise in the computer cir-	• Turn the power button off and then on again	11
					cuits of this unit.	or remove the AC plug from the outlet and
					• AC fuse blown.	then plug it again.
						• Contact your Onkyo Service Center.
Power on but no sound.					• TAPE MONITOR indicator is lit.	• Press the TAPE (MONITOR) button.	16
					• MUTING indicator is lit.	• Press the MUTING button on the remote con-	19
					• Bad connections.	troller to turn it off.
						• Check connections, speaker leads, etc.	10
					• Amplifier protection circuitry has been acti-	• Contact your Onkyo Service Center.
					vated. (‘PROTECT’ will be displayed.)
No sound from the center					• Speaker cable is not corrected.	• Check the connection between the amplifier	10
speaker,		or	very	minimal	• SURROUND MODE button is set to STE-	and the speaker.
sound.						• Set the SURROUND MODE button to DOLBY	21
					REO.	PRO LOGIC, HALL, LIVE or ARENA.
					• CENTER level is set to minimum.	• Set the CENTER level to the appropriate vol-	15
					• CENTER SPEAKER is set to NO.	ume.
						• Set CENTER SPEAKER to YES.	14
Hum, low-frequency noise.					• Poor or no input ground.	• Check outer conductor of input plugs.	6
					• Poor or no phono motor ground.	• Check for proper ground connection.	6
					• The placement of the audio connection cables	• Adjust the placement of the cable to reduce
					on the rear panel is incorrect.	hum.
Howling when the volume is					• Turntable and speakers are too close	• Move them farther apart.
turned up.					together.
Rough		or	scratchy	sound.	• Stylus of turntable pick-up is worn.	• Replace.
High range is not clear.					• Turntable stylus tip is dirty.	• Clean.
					• Treble control too high.	• Turn treble control down.
AM	stations cannot be				• AM loop antenna is not attached.	• Connect the included AM loop antenna to the	12
received.						AM antenna terminals.
Buzzing noise on AM (particu-					• Noise from electrical apparatus such as fluo-	• Move the AM loop antenna to different posi-	13
larly conspicuous at night or					rescent lamp.	tion.
with weak stations).						• Set up an outdoor AM antenna.	13
High-pitched noise or buzzing					• Noise from TV set.	• Place the AM loop antenna as far as possible	13
noise on AM.						from the TV.
						• Move unit away from TV set.
Crackling noise on AM, FM.					• Noise caused by turning fluorescent lamp on	• Move antenna as far as possible from the flu-
					and off.	orescent lamp.
					• Noise from automobile ignition.	• Install an FM outdoor antenna as far as possi-	13
						ble from the road.
						• Change the position or direction of the out-
						door antenna.
TUNED and STEREO indica-					• Station is too strong.	• Change to T-shaped antenna.	12
tors light but sound is distorted					• Multiple reflection of the radio waves because	• Use antenna which has better directivity and	13
and stereo separation is bad.					of tall buildings or mountains.	select a point where the distortion is least.
TUNED and STEREO indica-					• Station is too weak.	• Install an outdoor FM antenna.	13
tors flicker and hiss is heard					• Stereo FM broadcasts cover only about half	• Change the position or direction of the out-
on FM.					the distance of an ordinary broadcast.	door antenna.
No station is recalled when a					• The power cord has been unplugged or the	• The memory contents are lost. Store all sta-	23
SCAN button is pressed.					POWER switch has been turned off for a long	tions again.
					time.
Front	panel		controls	function	• No batteries in remote controller.	• Insert batteries.	5
but remote controller does not.					• Batteries have worn out.	• Replace batteries.	5
The sound of the playback					• The input selector is not set properly.	• Set it to the playback source.	16
source is not heard.

Also refer to the respective instruction manuals of the video disc player, video cassette recorder, TV monitor, etc., that compose your enter- tainment system.

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