Onkyo TX-DS777, TX-DS676 instruction manual Troubleshooting guide, Trouble Cause Remedy

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
POWER
Power shut off immedi-	•	Amplifier protection circuitry has been acti-	•	Remove the AC plug from the outlet immediately.	-
ately after power on.		vated.		Then contact your Onkyo service center.
No power.	•	Power cord is disconnected.	•	Connect power cord.	13
	• There is external noise in the computer circuits		• Turn the power button off and then on again or remove		13
		of this unit.		the AC plug from the outlet and then plug it again.
	•	AC fuse blown.	• Contact your Onkyo Service Center.		-
Power on but no sound.	•	“Muting” is displayed.	• Press the MUTING button on the remote controller to		31
				turn it off.
	• The digital/analog input setting is incorrect.		• Select the correct input.		23, 29
	•	Bad connections.	• Check connections, speaker leads, etc.		6~15
	•	Amplifier protection circuitry has been acti-	• Contact your Onkyo Service Center.		-
		vated.
The sound of the play-	•	The input selector is not set properly.	• Set it to the playback source.		26, 27
back source is not heard.

No picture appears on the TV screen (or moni- tor)

• The TV (or monitor) is not set to receive the out-		• Set the TV (or monitor) to the receiver input.		8
	put signals from the reciver.
•	The video cable is not connected securely.	•	Check the connections.	8
•	Only S video connection is made.	•	Make also video connection.	8

SPEAKERS

No sound from the cen-			•	Speaker cable is not corrected.	•	Check the connection between the amplifier and the	11
ter speaker,		or very				speaker.
minimal sound.			•	Listening mode is set to Stereo or Direct.	•	Set the Listening mode to any mode other than Stereo	34~38
						or Direct.
			•	CENTER level is set to minimum.	•	Set the CENTER level to the appropriate volume.	21
			•	CENTER SPEAKER is set to None.	•	Set CENTER SPEAKER to Large or Small.	18, 19
No sound or quiet sound			•	Subwoofer is set to No.	•	Check the speaker setting.	12
from subwoofer			•	Subwoofer speakers output level setting is im-	•	Check the output level of the Subwoofer using the test	22
				proper.		tone.
PHONO
Hum,	low-frequency		•	Poor or no input ground.	•	Check outer conductor of input plugs.	6
noise.			•	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 hum.	-
				on the rear panel is incorrect.
Howling when the vol-			•	Turntable and speakers are too close together.	•	Move them farther apart.	-
ume is turned up.
Rough	or	scratchy	•	Stylus of turntable pick-up is worn.	•	Replace.	-
sound. High range is not			•	Turntable stylus tip is dirty.	•	Clean.	-
clear.			•	Treble control too high.	•	Turn treble control down.	31
FM/AM
AM stations cannot be			•	AM loop antenna is not attached.	•	Connect the included AM loop antenna to the AM an-	14
received.						tenna terminals.
Buzzing noise on AM			•	Noise from electrical apparatus such as fluores-	•	Move the AM loop antenna to different position.	15
(particularly		conspicu-		cent lamp.	•	Set up an outdoor AM antenna.	15
ous at night or with
weak stations).
High-pitched noise or			•	Noise from TV set.	•	Place the AM loop antenna as far as possible from the	15
buzzing noise on AM.						TV.
					•	Move unit away from TV set.	-
Crackling noise on AM,			•	Noise caused by turning fluorescent lamp on	•	Move antenna as far as possible from the fluorescent	15
FM.				and off.		lamp.
			•	Noise from automobile ignition.	•	Install an FM outdoor antenna as far as possible from	15
						the road.
					•	Change the position or direction of the outdoor an-	15
						tenna.

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