Troubleshooting Guide - Onkyo TX-DS494 Instruction Manual

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-DS494 to
make sure that it is not due to a malfunction (or worn out batteries)
in the remote controller.
POWER
No power.
• Power cord is disconnected.
© Connect power cord (page 20).
• There is external noise in the computer circuits of this unit.
© Remove the AC plug from the outlet and then plug it again
(page 20).
• AC fuse blown.
© Contact your Onkyo Service Center.
Power on but no sound.
• MUTING indicator flashes.
© Press the MUTING button on the remote controller to turn
it off (page 23).
• Bad connections.
© Check connections, speaker leads, etc (pages 10-17).
• Amplifier protection
("PROTECT" will be displayed.)
© Contact your Onkyo Service Center.
• Input selector is not set properly.
© Set to correct input source (page 22).
• Headphones are connected.
© Lower volume and then disconnect headphones (page 8).
SPEAKERS
No sound from the center speaker, or very minimal
sound.
• Speaker cable is not corrected.
© Check the connection between the TX-DS494 and the
speaker (page 17).
• Listening mode is set to STEREO or ORCHESTRA.
© If listening mode is set to STEREO or ORCHESTRA, the
center speaker outputs only the effect sound (pages 26-28).
• Speaker configuration is set to 2 ch or 4 ch.
© Set the speaker configuration to the 3 ch or 5 ch (page 21).
No sound or very low volume from subwoofer.
• Subwoofer mode is set to "OFF".
© Check the subwoofer mode setting (page 21).
• Subwoofer mode setting is improper.
© Check the subwoofer mode setting (page 21).
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circuitry has been activated.
Hum, low-frequency noise.
• Poor or no input ground.
© Check outer conductor of input plugs (pages 10-15).
• Poor or no phono motor ground.
© Check for proper ground connection (page 13).
• The placement of the audio connection cables on the rear panel
is incorrect.
© Adjust the placement of the cable to reduce hum.
Howling when the volume is turned up.
• Turntable and speakers are too close together.
© Move them farther apart.
Rough or scratchy sound. High range is not clear.
• Stylus of turntable pick-up is worn.
© Replace.
• Turntable stylus tip is dirty.
© Clean.
• Treble control too high.
© Turn treble control down (page 8).
VIDEO and AUDIO
Desired picture does not appear.
• Improper connection.
© Check the connection again. Insert the plugs and
connectors completely (pages 10-15).
Picture and sound do not match.
• Improper connection.
© Check connections (pages 10-15).
No picture appears on the TV screen (or monitor).
• TV (or monitor) is not set to receive the output signals from the
receiver.
© Set the TV (or monitor) to the receiver input.
• Video cable is not connected securely.
© Check connections (pages 10-15).