ONKYO TX-NR900 Instruction Manual
78
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-NR900/900E
to make sure that it is not due to a malfunction (or worn out batteries)
in the remote controller.
try to operate the controls on the front panel of the TX-NR900/900E
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 (see page 30).
• External noise is affecting the internal microcomputer.
➞ Turn off the power, wait five seconds, and then turn back on
the power (see page 30).
Power turns on but no sound.
• “Muting” is displayed.
➞ Press the MUTING button on the remote controller to turn off
muting (see page 32).
• Bad connections or wiring.
➞ Check connections, speaker cables, and other wiring (see
pages 16 to 29).
Sound of 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.
Power shuts off immediately after power on.
• Amplifier protection circuitry is activated.
➞ Remove the power cord from outlet immediately. Contact
your Onkyo service center.
SPEAKERS
No sound from the center speaker, or at very low
volume.
volume.
• Speaker cable is not connected.
➞ Check the connection between amplifier and speaker (see
page 23).
• 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.
on the listening mode.
• Center speaker volume is set to minimum.
➞ Set the center speaker level to the appropriate volume (see
pages 34, 50).
• The Center setting is set to “None.”
➞ Set the Center setting to “Large” or “Small” at Setup Menu →
Speaker Setup Menu
→ Speaker Config Sub-menu (see page 48).
No sound or very low volume from subwoofer.
• Subwoofer setting is set to “No.”
➞ Set the Subwoofer setting to “Yes” at Setup Menu → Speaker
Setup Menu
→ Speaker Config Sub-menu (see page 48).
• Subwoofer volume is set to minimum.
➞ Set the subwoofer level to the appropriate volume (see pages 34,
50).
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.
clear.
• Turntable needle is dirty or worn, or a problem exists with a
connected component.
➞ Refer to the instruction of the connected components and
➞ Refer to the instruction of the connected components and
check for problem.
• Treble control is too high.
➞ Turn treble setting down at Setup Menu → Audio Adjust
Menu
→ Tone Control Sub-menu (see page 58).
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 (see page 24).
Buzzing noise on AM stations (particularly noticeable at
night or with weak stations).
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 (see page 25).
Noise is heard at high-pitched sounds on AM stations.
• Noise caused by TV set.
➞ Place the AM loop antenna as far as possible from the TV.
➞ Move TX-NR900/900E 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
(see page 25).
➞ Change the position or direction of the outdoor antenna.
Stereo indicator lights, but sound is distorted and stereo
separation is bad.
separation is bad.
• Station is too strong.
➞ Change to FM indoor antenna (see page 24).
• Multiple reflection of the radio waves because of tall buildings
or mountains.
➞ Use antenna that has better directivity and orient it so
➞ Use antenna that has better directivity and orient it so
distortion is least.
Indicators for stereo reception flicker and hiss is heard
on FM stations.
on FM stations.
• Station is too weak.
➞ Install an outdoor FM antenna (see page 25).
• 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.
• Memory is lost because power has been turned off for a long
time.
➞ Store all stations again (see page 37).
➞ Store all stations again (see page 37).