HIS -ML12 E Series User Manual page 25

Symptom
"Scanning Ports / No
Signal" message box
and no image on the
screen
"VGA / Out of
Range" or "DVI / Out
of Range" message
box and no image on
the screen
Incorrectly displayed
or partial image on
the screen
Wrong or abnormal
colors (white is not
white)
Screen image is dim
Causes
Video cable is not plugged
in correctly�
PC is not powered on�
PC is not sending signal.
The source signal exceeds
the maximum resolution
and/or refresh rate that the
monitor can handle
( > 800 x 600 resolution or
> 60 Hz refresh rate)�
Monitor has not been
adjusted correctly for the
source signal.
Analog signal is not a
standard CVT signal (this
does not apply to digital
signals).
Monitor color settings are
incorrectly adjusted.
Video cable is not securely
connected�
Video cable is bad�
Brightness and/or contrast
settings are not set
properly�
Solutions
Check the video cable connection at
the monitor, PC, and/or KVM extender.
Ensure PC is powered on�
Connect PC to another known working
monitor to check the PC source signal.
Adjust the computer settings to the
monitor's native resolution:
800 x 600 @ 60 Hz
• Activate "Auto setup" function in
the OSD's "VGA Settings" menu.
This function may also be activated
by pressing the Select [ SEL ]
button outside of the OSD menu�
• Fine tune the picture by manually
adjusting the image using the
settings in the OSD menu.
Disable the "CVT Mode" function in the
"Advanced Setup" menu located in the
OSD's "Setup" menu. This allows the
monitor to use the controller board's
internal mode table to display signal.
Reset monitor to the default settings
by activating "Reset to factory defaults"
function in the OSD's "Setup" menu.
If any colors (red, green, or blue) are
missing, check the video cable to make
sure it is securely connected�
Ensure no loose or broken pins in the
cable connector� Shorts in cable could
also cause improper image to display.
Adjust the monitor's brightness and/
or contrast settings found in the OSD's
"Picture" menu�
ML12E User Manual, 99151B, September 2021
Troubleshooting
25