HP Pro 4300 Maintenance And Service Manual page 103

The picture is broken up, rolls, jitters, or flashes.
Cause
The monitor connections may be incomplete or the monitor
may be incorrectly adjusted.
Monitor needs to be degaussed.
Image is not centered.
Cause
Position may need adjustment.
"Out of Range" displays on screen.
Cause
Video resolution and refresh rate are set higher than what
the monitor supports.
High pitched noise coming from inside monitor.
Cause
Brightness and/or contrast settings are too high.
Fuzzy focus; streaking, ghosting, or shadowing effects; horizontal scrolling lines; faint vertical bars; or unable to
center the picture on the screen (flat panel monitors using an analog VGA input connection only).
Cause
Monitor's internal digital conversion circuits may be unable to
correctly interpret the output synchronization of the graphics
card.
Graphics card is not seated properly or is bad.
Solution
1. 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.
2. Fluorescent lights or fans may be too close to the
monitor.
Degauss the monitor. Refer to the documentation that came
with the monitor for instructions.
Solution
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.
Solution
Restart the computer and enter Safe Mode. Change the
settings to a supported setting then restart the computer so
that the new settings take effect.
Solution
Lower brightness and/or contrast settings.
Solution
1. Select the monitor's Auto-Adjustment option in the
monitor's on-screen display menu.
2. Manually synchronize the Clock and Clock Phase on-
screen display functions. To download a SoftPaq that
will assist you with the synchronization, go to the
following Web site, select the appropriate monitor, and
download either SP32347 or SP32202:
http://www.hp.com/support
1. Reseat the graphics card.
2. Replace the graphics card.
Solving Display Problems 95