Bedienungsanleitung Onkyo TX-DS797 (Seite 72 von 76) (Englisch)

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Troubleshooting guide

If a problem occurs while you are using the remote controller, first

try to operate the controls on the front panel of the TX-DS797 to

make sure that it is not due to a malfunction (or worn out batteries) in

the remote controller.

POWER

Power shuts off immediately after power on.

• Amplifier protection circuitry has been activated.

➞ Remove the power cord from outlet immediately. Contact

your Onkyo service center.

No power.

• Power cord is disconnected.

➞ Connect power cord.

• External noise in the affecting the internal microcomputer.

➞ Turn the power button off and then on again or remove the

power cord from the outlet and then plug it in again.

• Internal fuse is blown.

➞ Contact your Onkyo Service Center.

Power turns on but no sound.

•“Muting” is displayed.

➞ Press the MUTING button on the remote controller to turn it

off.

• Bad connections or wiring.

➞ Check connections, speaker cables, etc.

• Amplifier protection circuitry has been activated.

➞ Contact your Onkyo Service Center.

The sound of the playback source is not heard.

• Input selector is not set properly.

➞ Set to correct input source.

• Headphones are connected.

➞ Lower volume and then disconnect headphones.

SPEAKERS

No sound from the center speaker, or at very low

volume.

• Speaker cable is not connected.

➞ Check the connection between the amplifier and the speaker.

• Listening mode is set to Stereo or Direct.

➞ Set the Listening mode to any mode other than Stereo or

Direct. The output to the center speaker may differ depending

on the listening mode.

• Center speaker level is set to minimum.

➞ Set the Center speaker level to the appropriate volume (page

31).

•

The Center setting of the Speaker Config submenu is set to “None.”

➞ Set the Center setting at the Speaker Config submenu to

“Large” or “Small” (see page 29).

No sound or very low volume from subwoofer.

• Subwoofer is set to “No.”

➞ Check the speaker setting (pages 29, 40).

• Subwoofer speakers output level setting is improper.

➞ Check the output level of the Subwoofer using the test tone.

Low frequency humming is heard.

• Not properly grounded.

➞ Check outer conductor of input plugs.

• Turntable motor is not properly grounded.

➞ Check for proper ground connection.

• Audio connection cables on the rear panel are connected

incorrectly.

➞ Adjust the placement of the cable to reduce hum.

Howling is heard when the volume is turned up.

• Turntable and speakers are located too close together.

➞ Move them farther apart.

Rough or scratchy sound is heard. High range is not

clear.

• The needles of turntable is dirty or worn, or a problem exists

with a connected component.

➞ Refer to the instruction of the connected components and

check for problem.

• Treble control is too high.

➞ Turn treble down (see page 40).

No sound is output from the surround back speakers.

• The setting for the surround back speakers does not match the

actual configuration.

➞ Check the Surr Back Out setting (OSD MenuSpeaker Setup

→ Speaker Config). If one surround back speaker is

connected, select “1 ch,” and if two surround back speakers

are connected, select “2 ch” (page 29).

FM/AM TUNER

AM stations cannot be received.

• AM loop antenna is not connected.

➞ Connect the included AM loop antenna to the AM antenna

terminals.

Buzzing noise on AM stations (particularly noticeable at

night or with weak stations).

• Noise from electrical apparatus such as fluorescent lamp.

➞ Move the AM loop antenna to different position.

➞ Set up an outdoor AM antenna.

Noise is heard at high-pitched sounds on AM stations.

• Noise from TV set.

➞ Place the AM loop antenna as far as possible from the TV.

➞ Move unit away from TV set.

Crackling noise on both AM and FM stations.

• Noise caused by fluorescent lamp being turned on and off.

➞ Move antenna as far as possible from the fluorescent lamp.

• Noise from automobile ignition.

➞ Install an FM outdoor antenna as far as possible from the

road.

➞ Change the position or direction of the outdoor antenna.

The indicators light for stereo reception, but sound is

distorted and stereo separation is bad.

• Station is too strong.

➞ Change to FM indoor antenna.

• Multiple reflection of the radio waves because of tall buildings

or mountains.

➞ Use antenna that has better directivity and select a point

where distortion is least.

Indicators for stereo reception flicker and hiss is heard

on FM stations.

• Station is too weak.

➞ Install an outdoor FM antenna.

• Stereo FM broadcasts cover only about half the distance of an

ordinary broadcast.

➞ Change the position or direction of the outdoor antenna.

No preset station is recalled.

• Power cord has been unplugged or the POWER switch has been

turned off for a long time.

➞ The memory contents are lost. Store all stations again.

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