Additional Information; Troubleshooting - Koss KS4380-2 Instruction Manual

Additional
Information
45

Troubleshooting

If you experience any of the following difficulties while
using the system, use this troubleshooting guide to help you
remedy the problem. Should any problem persist, consult
your nearest service center by calling 1-800-287-4871.
No power.
Is the power cord firmly plugged into the power outlet?
One of the safety mechanisms may be operating. In
this event, unplug the player from the power outlet
briefly and then plug it in again.
No picture.
Check that the system is connected securely.
The video connecting cord is damaged. Replace it with
a new one.
Make sure you connect the system to the video input
connector on the TV (see page 16).
Make sure you turn on the TV.
Make sure you select the video input on the TV so that
you can view the pictures from this system.
Noise (interference) appears in the picture.
Clean the disc.
If video from this system has to go through your VCR
to get to your TV, the copy-protection applied to some
DVD programs could affect picture quality. If you still
experience problems after checking your connections,
please try connecting your DVD system directly to
your TV S-Video input, if your TV is equipped with this
input (see page 16).
The aspect ratio of the screen cannot be changed
even though you set "TV DISPLAY" in the SETUP menu
when you play a wide picture.
The aspect rate is fixed on your DVD disc.
If you connect the system with the S-Video cable,
connect directly to the TV. Otherwise, you may not
change the aspect ratio.
Depending on the TV, you may not be able to change
the aspect ratio.
There is no sound or only a very low-level sound is heard.
Check that the speakers and components are connected
securely.
Make sure that you have selected the correct source on
the system.
Press MUTE button on the remote control if MUTING is
blinking on the front panel.
The protective device on the system has been activated
because of a short circuit. Turn off the system, eliminate
the short-circuit problem and turn on the power again.
The audio connecting cord is damaged. Replace it with
a new one.
The system is in pause mode or in slow-motion play
mode, or fast forward or fast reverse is performed
Press PLAY button to return to normal play mode.
The left and right sounds are unbalanced or reversed.
Check that the speakers and components are connected
correctly and securely.
Adjust front balance parameter using CH.LEVEL and
< / > + / - buttons (see pages 43).