User Guide

Specific Problems
The table below shows some common operating problems and their solutions.
Problem Possible cause Solution
No image
appears.
Power. Ensure that the video source, the
switcher, and the display are plugged
into a live AC power source and that the
switcher is turned on.
No video input. Check that the input device is outputting
a video signal.
No video output. Press the Menu button. If the on-screen
display does not appear, check the
output connection.
The output signal is
incompatible.
Select an output rate that is compatible
with the display.
The output format is
incompatible for the display.
Press and hold the front panel PIP On
button while powering up the switcher.
The IN1508 toggles between the RGB
and YUV output formats.
The display may not accept
the output sync format.
Check the sync capability of the display
and select the correct output sync.
Freeze mode was entered
when the image was black.
Issue the SIS command 0F to deactivate
freeze mode.
Video may be muted. Issue the SIS command 0B to disable
video mute.
No audio
output.
Power. Ensure that the audio source,
the switcher, and the amplifier/ speakers
are plugged into a live AC power source
and the switcher is turned on.
The source is incorrect. Ensure that the source is connected to
the correct input and that the volume
has not been turned down or muted.
The output is incorrect. The IN1508 outputs line level audio
only. Ensure that it is connected to a
mixer/amplifier or to amplified speakers.
Volume is too low. Increase the volume using the Audio
submenu.
Audio may be muted. Issue the SIS command 0Z to disable
audio mute.
The image is
scrambled.
The output signal is
incompatible.
Use the power up shortcuts to select an
output format (RGB, component, and
the like) and rate that are compatible
with the display.
IN1508 • Operation 47