Troubleshooting Guide
If a problem occurs while you are using the remote controller, Ţrst try to operate the controls on the front panel of the
DTR-7.4 to make sure that it is not due to a malfunction (or dead batteries) in the remote controller.
SymptomsCausesRemedies
Make sure that the power cord is properly plugged
into the wall outlet. Make sure that the other end
Power cord is disconnected.
of the power cord is properly connected to the
No power.
DTR-7.4Os AC INLET (See page 27).
External noise is affecting the internal Turn off the power, wait Ţve seconds, and then
microcomputer.turn the power back on (See page 27).
Press the Muting button on the remote controller
OMuting� is displayed.
Power turns on but no to turn off muting (See page 40).
sound.Check connections, speaker cables, and other wir-
POWERBad connections or wiring.
ing (See pages 18 to 26).
Input selector is not set properly.Set to correct input source (See page 40).
Sound of playback source
Lower volume and then disconnect headphones
is not heard.Headphones are connected.
(See page 40).
Power shuts off immedi-Remove the power cord from outlet immediately.
AmpliŢer protection circuitry is activated.
ately after power on.Contact your Onkyo service center.
Check the connection between DTR-7.4 and
Speaker cable is not connected.
speaker (See page 18).
Set the Listening mode to any mode other than
Listening mode is set to Stereo, Pure Audio Stereo, Pure Audio or Direct. The output to the
No sound from the center or Direct.center speaker may differ depending on the listen-
speaker, or at very low vol-ing mode (See page 44).
ume.Set the center speaker level to the appropriate vol-
Center speaker volume is set to minimum.
ume (See pages 34, 35).
Set the Center setting to OLarge� or OSmall� at
The Center setting is set to ONone.�Setup Menu ? Speaker Setup Menu ? Speaker
ConŢg Sub-menu (See page 33).
Set the Subwoofer setting to OYes� at Setup Menu
Subwoofer setting is set to ONo.�? Speaker Setup Menu ? Speaker ConŢg Sub-
No sound or very low vol-
menu (See page 33).
ume from subwoofer.
Set the subwoofer level to the appropriate volume
Subwoofer volume is set to minimum.
(See pages 34, 35).
SPEAKERS
Not properly grounded.Check outer conductor of input plugs.
Low frequency humming Turntable motor is not properly grounded. Check for proper ground connection.
is heard.Audio connection cables on the rear panel
Adjust the placement of the cables to reduce hum.
are connected incorrectly.
Howling is heard when the Turntable and speakers are located too
Move them farther apart.
volume is turned up.close together.
Turntable needle is dirty or worn, or a
Refer to the instructions of the connected compo-
problem exists with a connected compo-
Rough or scratchy sound is nents and check for problems.
nent.
heard. High range is not Appendix
Turn treble setting down at Setup Menu ? Audio
clear.
Treble control is too high.Adjust Menu ? Tone Control Sub-menu (See
page 54).
AM stations cannot be Connect the included AM loop antenna to the AM
AM loop antenna is not connected.
received.antenna terminals (See page 14).
Buzzing noise on AM sta-Move the AM loop antenna to different position.
tions (particularly notice-Noise from electrical apparatus such as
able at night or with weak �uorescent lamp.Set up an outdoor AM antenna (See page 15).
stations).
Noise is heard at high-Place the AM loop antenna as far as possible from
FM/AM TUNER
pitched sounds on AM sta-Noise caused by TV set.the TV.
tions.Move DTR-7.4 away from TV set.
99 |
ACEC
