Troubleshooting; Video Troubleshooting - HIS -UM23.8 Series User Manual

Video Troubleshooting

IMPORTANT!
If using a KVM extender, first try to resolve any problems using the solutions listed
below. If the problem still exists, try bypassing the KVM extender. If this fixes the
problem and allows the monitor to work properly, then the KVM extender is the
source of the problem� Please refer to the troubleshooting section of the KVM
extender manual or contact Hope Industrial Systems for additional assistance.
Symptom
No image on the
screen and control's
Power Indicator light
is not lit
No image on the
screen and control's
Power Indicator light
is lit solid red
No image on the
screen and control's
Power Indicator light
is blinking orange or
blinking green

Troubleshooting

Causes
Power cable is not
plugged in.
Monitor is not powered on�
Video cable is not plugged
in correctly�
PC is in Power Saving
mode�
PC is not sending signal.
Analog/VGA signal is not a
standard CVT signal (this
does not apply to digital
signals).
Solutions
• Check power connections at the
monitor and power source�
• For DC input, check the connector
polarity and ensure input voltage is
10�8 to 26�4 VDC�
Press the Power button on the monitor
for 1-2 seconds to turn the monitor on
and make sure the Power Indicator
light is lit green.
Check the video cable connection at
the monitor, PC, and/or KVM extender�
Power Saving mode can usually
be exited by moving the mouse or
pressing a key on the keyboard.
Connect PC to another known working
monitor to check the PC source signal.
Disable the "CVT Mode" function in
the OSD's "Setup > Advanced Setup"
menu� This allows the monitor to use
the controller board's internal mode
table to display signal.
UM23.8A User Manual, 99183A, June 2022
Troubleshooting
27