HP D3K21UT#ABA, D8C84UT#ABA Dim characters Cause Solution, Image is not centered Cause Solution

Dim characters.

Cause	Solution
The brightness and contrast controls are not set properly.	Adjust the monitor brightness and contrast controls.
Cables are not properly connected.	Check that the graphics cable is securely connected to the
	graphics card and the monitor.
Blurry video or requested resolution cannot be set.
Cause	Solution
If the graphics controller was upgraded, the correct graphics	Install the video drivers included in the upgrade kit.
drivers may not be loaded.
Monitor is not capable of displaying requested resolution.	Change requested resolution.
Graphics card is bad.	Replace the graphics card.
The picture is broken up, rolls, jitters, or flashes.
Cause	Solution
The monitor connections may be incomplete or the monitor	1. Be sure the monitor cable is securely connected to the
may be incorrectly adjusted.		computer.
	2.	In a two-monitor system or if another monitor is in close
		proximity, be sure the monitors are not interfering with
		each other’s electromagnetic field by moving them
		apart.
	3.	Fluorescent lights or fans may be too close to the
		monitor.
Monitor needs to be degaussed.	Degauss the monitor. Refer to the documentation that came
	with the monitor for instructions.
Image is not centered.
Cause	Solution
Position may need adjustment.	Press the monitor's Menu button to access the OSD menu.
	Select ImageControl/ Horizontal Position or Vertical
	Position to adjust the horizontal or vertical position of the
	image.

“No Connection, Check Signal Cable” displays on screen.

Cause Solution

Monitor video cable is disconnected.

Connect the video cable between the monitor and computer.

CAUTION: Ensure that the computer power is off while connecting the video cable.

112 Appendix C Troubleshooting Without Diagnostics