HP DC5100 manual Conversion circuits may

Troubleshooting Without Diagnostics

Solving Display Problems (Continued)

Problem Cause Solution

Fuzzy focus; streaking,	Flat panel monitor’s
ghosting, or shadowing	internal digital
effects; horizontal scrolling	conversion circuits may
lines; faint vertical bars; or	be unable to correctly
unable to center the picture	interpret the output
on the screen.	synchronization of the
(flat panel monitors using	graphics card.
an analog VGA input
connection only)

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 SP20930 or SP22333: www.hp.com/support

Graphics card is not seated properly or is bad.

1.Reseat the graphics card.

2.Replace the graphics card.

Certain typed symbols do	The font you are using
not appear correct.	does not support that
	particular symbol.

Use the Character Map to locate the and select the appropriate symbol. Click Start > All Programs >

Accessories > System Tools > Character Map. You can copy the symbol from the Character Map into a document.

Troubleshooting Guide www.hp.com 2–23