Koss KS4380-2 Home Theater System User Manual


 
46
Troubleshooting (Continued)
Severe hum or noise is heard.
Check that the speakers and components are connected
securely.
Check that the connecting cords are away from a
transformer or motor, and at least 3 meters away from
a TV set or fluorescent light.
Move your TV away from the audio components.
The plugs and jacks are dirty. Wipe them with a cloth
slightly moistened with alcohol.
Clean the disc.
The surround effect is difficult to hear when you are
playing a Dolby Digital sound track.
Set the Dolby Surround to “OFF” in the SETUP menu.
Check the speaker connections.
Depending on the DVD disc, the output signal may at
times be monaural or stereo even if the sound track
is recorded in Dolby Digital format.
No sound is heard from the subwoofer.
When you play A DVD movie disc, the player will
automatically select DOLBY DIGITAL audio mode. If the
DVD disc is recorded with Dolby Digital soundtrack you
will hear sound from all 5 satellites plus subwoofer. If the
DVD disc does not come with DOLBY DIGITAL and comes
either Dolby Surround, Dolby Pro Logic or 2 channel
Stereo soundtrack, the subwoofer will not operate. In this
case press the DSP MODE button on the front panel or
the remote control to select 2 CH. STEREO audio mode.
This will activate the subwoofer.
The sound comes from the center speaker only.
Depending on the disc at times the sound may come
from the center speaker only. This is normal.
No sound is heard from the center speaker.
Make sure the Center is set. (see page 43)
The listening mode may be set to Dolby Pro Logic.
Adjust the center speaker volume.
No sound or only a very low-level sound is heard from
the rear speakers.
Make sure the Rear speaker is configured properly. (see
page 43)
The listening mode may be set to 3-Stereo.
Adjust the rear speaker volume.
Radio stations cannot be tuned in.
Check that the antennas are connected correctly. Adjust
the antennas and connect an external antenna if necessary.
The signal strength of the stations is too weak (when
turning in with automatic tuning). Use manual tuning.
No stations have been preset.
The tuner mode is not selected, select the Tuner mode.
The remote does not function.
Remove any obstacles between the remote control and
the system.
Move the remote control closer to the system.
Point the remote control at the remote sensor on the
front panel.
Replace all the batteries in the remote control with new
ones if they are weak.
Check that the batteries are loaded correctly.
The disc does not play.
There is no disc inside. (“NO DISC” appears on the front
panel display and the TV screen.) Insert a disc.
Insert the disc correctly with the playback side facing
down on the disc tray.
Clean the disc (see page 12).
The system cannot play CD-ROMs, etc. (see page 11).
Insert a DVD, a CD, or a MP3 disc.
Check the region code of the DVD disc (see page 11).
Moisture has condensed inside the system. Remove the
disc and leave the system turned on for about an hour.
(see page 10)
The system starts playing the DVD automatically.
The DVD features the auto playback function.
Playback stops automatically.
Depending on the disc, the auto pause signal is
recorded. While playing such a disc, the system stops
playback at the signal.
Stopping playback, Search, Slow-motion play, repeat
play or Program play, etc., cannot be done.
Depending on the disc, some of the above operations
may not be available.
Messages do not appear on the TV screen in the
language you want.
Select the language for OSD in SETUP menu (see
page 34). The disc must have the language you selected,
if not, other language will be selected.
The language for the sound cannot be changed when
you play a DVD.
Multilingual sound is not recorded on the DVD.
Changing the language for the sound is prohibited on
the DVD.
The language for the subtitles cannot be changed
when you play a DVD.
Multilingual subtitles are not recorded on the DVD.
Changing the language for the subtitles is prohibited on
the DVD.
The subtitles cannot be turned off when you play a DVD.
Depending on the DVD, you may not be able to turn the
subtitles off.
The angles cannot be changed when you play a DVD.
Multi-angles are not recorded on some DVDs.
Change the angles when the angle mark appears on
the TV screen (see page 39).
Changing the angles is prohibited on some DVDs.
The system does not operate properly.
Static electricity, etc., may affect the system’s operation.
Disconnect the AC power cord once, then connect it
again.