R5914105 /01 MDSC-8532
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5.1 Troubleshooting list
To diagnose a problem
Problem description
Action
Black bars visible on upper and lower or left and
right positions of the display.
This happens when the signal aspect ratio is
different from the one of the screen. This is not a
display malfunction.
The OSD menu cannot be operated.
The Control lock function has been enabled. This is
not a display malfunction. See
.
The screen is black, but the logo is visible after
display switch on.
Check the input signal.
The screen is black, no logo is visible after display
switch on, the front LED is visible.
Possible LCD panel failure.
The screen is black, no logo is visible after display
switch on, the front LED is not visible.
The display is not powered or the unit is not working.
DP, HDMI, DVI input is available but no image is
displayed.
Check if the input signal has HDCP revision > 1.4
The message “WARNING ! FAILSAFE MODE –
check display settings” appears on screen during
start-up of the monitor.
Reboot the monitor.
The message “WARNING ! FAILSAFE MODE –
check display settings” appears on screen during
firmware field upgrade.
Reboot the monitor and run the upgrade procedure
again.
A permanent small text message on the top-right
corner “Failsafe mode” is visible, even after
rebooting the monitor.
The display can be used in failsafe mode as
temporary backup, running a factory FW (see the
FW version on OSD menu). Please contact the
Service Center.
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