Extron electronic IN1404XT - Manual (Page 51)

3-31 IN1404XT Video Scaler and Switcher • Operation
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
scaler, and the display are plugged
into a live AC power source and
the scaler 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 Use the power up shortcuts to
incompatible. select an output rate that is
compatible with the display.
The output resolution Select an output resolution that is
is lower than the input greater than or equal to the input
resolution.
resolution.
The display may not Check the display’s sync capability
accept the output sync and select the correct output sync.
format.
The input/output
Select Input>Advanced>Input
settings may be Mode>Redetect Now.
incorrect or may have
been changed with
Lockout Changes
enabled.
The input is improperly Use the Input menu to select the
configured.
correct input format.
Freeze mode was Deactivate freeze mode.
entered when the
image was black.
No audio output. Power. Ensure that the audio source, the
scaler, and the amplifier/speakers
are plugged into a live AC power
source and the scaler 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 IN1404XT outputs line level
audio only. Ensure that it is
connected to a mixer/amplifier or
to amplified speakers.
Volume too low. Increase the volume with the
scaler’s Volume button.
Audio may be muted. Press the Mute Audio button.
The input source Autoswitching is Use the RS-232 AS0 command to
cannot be changed. turned on via an turn autoswitching off. See
RS-232 command. chapter 4, Programmer’s Guide, for
details.