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Operation, cont’d
IN1508 Scaling Presentation Switcher • Operation3-40
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 Select an output rate that is
incompatible. compatible with the display.
The output format is Press and hold the front panel
incompatible for the PIP On button while powering up.
display. the switcher. The IN1508 toggles
between the RGB and YUV output
formats.
The display may not Check the display’s sync capability
accept the output sync and select the correct output sync.
format.
Freeze mode was Issue the SIS command 0F to
entered when the deactivate freeze mode.
image was black.
Video may be muted. Issue the SIS command 1B 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 1Z to
disable audio mute.
The image is The output signal is Use the power up shortcuts to
scrambled. incompatible. select an output rate that is
compatible with the display.