Symptoms, Possible Causes And Solutions; Symptom: Display Doesn't Respond To External Control System; Symptom: Can't Get Pc To Output 4K @ 24/30/60 Hz - Planar UltraRes L Series User Manual

26. Symptoms, Possible Causes and Solutions

Below are different symptoms that you might encounter as you install your Planar UltraRes L
Series display. First look at the different symptoms to see if you can find your issue. And then
look at the possible cause and try the suggested solution(s). If you still are not able to resolve
your issue, please contact Planar's Technical Support Department.

26.1 Symptom: Display Doesn't Respond to External Control System

Solution
Confirm the Power Down Mode setting. Networked standby or Fast Startup are required to
enable the use of external control devices. Standby disables all external control except IR,
allowing the display to be in the lowest power setting. See "Power Down Mode" on page 88.

26.2 Symptom: Can't Get PC to Output 4K @ 24/30/60 Hz

Solution
Confirm that DisplayPort-to-HDMI adapters are not being used. These adapters do not support
outputting 4K content.
Solution
Make sure you are using a high-speed HDMI or a Certified Premium HDMI cable. Standard
HDMI cables might work but are not guaranteed.
Solution
Verify that the selected EDID Type setting in the OSD is 4K60 or 4K30. If you change the EDID
setting, you may need to disconnect and reconnect the cable.
Solution
If you are trying to use 4K @ 60 Hz on HDMI, the display must be connected to HDMI 1 or
HDMI 2.
Solution
If you are trying to display 4K @ 60 Hz on HDMI 1 or HDMI 2, the Multi-Source View setting
must be Single.
Planar UltraRes L Series User Manual
020-1427-00A
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