HP 3100 Completely black, Characters are, Only partially Printed also, Referred to as Dropouts

Problem Cause Solution

The page is	The toner cartridge was improperly
completely black.	installed.
	The toner cartridge is defective.
	Discontinuities exist in the high-voltage
	contact points.
	There is a problem in the ECU or the
	laser/scanner.

Remove the cartridge and reinstall it.

Replace the toner cartridge.

Perform the “High-voltage power supply check,” which is discussed later in this chapter.

Follow the steps in “Basic troubleshooting” to isolate the problem. Replace the ECU or the laser/scanner, as needed.

Characters are	A single sheet of paper is defective.
only partially
printed (also	The print density needs to be adjusted.
referred to as
dropouts).
	The moisture content of the paper is
	inconsistent or the paper has moist or wet
	spots on the surface.
	The paper was damaged by inconsistent
	manufacturing processes.
	A “draft mode” or “economy mode” is
	selected in the software.

Try reprinting the job.

Adjust the print density from the control panel.

Make sure that the media meets specifications detailed in HP’s media specifications guide.

Make sure that the media meets specifications detailed in HP’s media specifications guide.

Try a “normal” or “best” setting.

The bottom of the printed page is blank or part of a graphic’s image is cut off.

The page is too complex. (There is not enough memory to process the page.)

Set the resolution to 300 dpi through your software or printer driver. See the online help for printer driver issues.

162 Troubleshooting EN