Canon DP-V2421 4K Reference Display User Manual
Page 134
134
Troubleshooting
Symptom
Cause and Action
There is an unlit or red, blue, green, or
white dot on screen.
• LCD display is made of very high precision technology. It has effective
pixels of 99.99% or more, but there may be black dots or red, blue, or
green dots that may be always on. This is not a failure.
—
There is an interference pattern or trace
that remains when the LCD panel is
pressed.
• The symptom may be resolved by displaying a white or black image on
the entire screen.
—
OSD menu cannot be used.
• Check that "Protect Settings" is not set.
The F button on the main unit is flashing.
• When "Peak Luminance Control" is set to "On", the F button assigned
with this function flashes when display luminance is restricted.
• When "Peak Luminance Control" is assigned to two or more F buttons,
one of the buttons flashes.
"Aspect Marker", " Safety Zone Marker " or
"Area Marker" does not appear.
• A channel with no signal, unsupported signal, or with "Input
Configuration" not set may be selected. Check the signal.
The fan starts to rotate even when "Fan"
under "Camera Link" is set to "On" or
"Fan Stop" is set to "On".
• The fan operates to lower the temperature inside the main unit. The fan
stops operating when the temperature inside has lowered.
• When "Fan" under "Camera Link" is set to "On", the down time may not
match the camera.
The fan does not stop even when "Fan"
under "Camera Link" is set to "On" or
"Fan Stop" is set to "On".
• The fan does not stop if the temperature inside the main unit is high.
Configure settings after the internal temperature has lowered.
• The fan may not stop in some conditions, for example when used at a
high temperature. Use the video display at the operating temperature
(
109) or lower.
Loud fan noise
• The fan operates at a faster speed than usual to lower the internal
temperature if "Fan Control" is set to "On" and when the temperature
inside the main unit has increased. The fan operates at normal speed
when "Fan Control" is set to "Off".
• When high-luminance content is displayed continuously, the temperature
inside the main unit rises even if the operating temperature is within
the recommended range, and the fan operates at a faster speed than
usual to lower the internal temperature. It is recommended to lower the
brightness of the video display.
You forgot the password for "Protect
Settings".
• Press the jog dial and the button while the video display is in standby.
The configuration will be reset to the state where no password is set.
The video display does not start up in the
condition that the power was turned off
last time.
• Check the "Power on Setting" on the OSD menu. Set "Last memory"
to start up the video display in the condition that the power is turned off
last time.
The image quality for the User mode in
"Picture Mode" differs from the image
quality of presets.
• Select the preset mode by "Copy Picture Mode" and copy the settings.
Image quality on the left and right screens
is different.
• Check the "Channel Settings"
→
"Picture Mode" settings.
Image quality is automatically changed.
The same image is displayed in two
screens.
• Check the "Channel Settings"
→
"Single Input Dual View" settings.