Solving imagequality problems

Use the following tables to help solve problems with printed pages.

If the problem occurs when printing, see table 11, "Solving print image-quality problems," on page 72. Also, see table 12, "Solving paper-feed problems," on page 77.

Solving print image-quality problems

Table 11. Solving print image-quality problems

Problem

Cause Solution

Pages do not print.

The printer is not plugged in. Make sure that the printer is plugged into a live wall outlet or power strip. The Ready light illuminates when the printer is ready to print.

The cable pod cable is loose. Check that the cable between the printer and the computer is securely connected at both ends.

The paper feed assembly is not Verify that the pickup assembly, pickup functioning or incorrectly installed. roller, and paper lift plate assembly are installed correctly and working properly.

The tape was not removed from the Remove the toner cartridge, remove the toner cartridge. tape, and reinstalling the toner cartridge.

See "Toner cartridge" on page 15.

The toner cartridge is out of toner. Replace the toner cartridge. (See "Toner cartridge" on page 15.)

The media you are using does not meet Make sure that the media meets HP's specifications (for example, it is too specifications detailed in the Print Media moist or too rough). Guide for the HP LaserJet printer family.

Parts of the page around the edges are not printing.

The printer cannot print to the edge of To get the image to fit into this printable the paper. The printer has minimum area, slightly reduce the size of the margins on each edge of 4.23 mm (0.167 image. inch).

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The reduction setting is set incorrectly. Check the reduction setting in the "Print"

or "Setup" window from within the program you are using.

Toner specks appear on the printed page.

Vertical lines appear on the printed page.

Cause

Solution

The media you are using does not meet HP's specifications (for example, it is too moist or too rough).

Make sure that the media meets specifications detailed in the Print Media Guide for the HP LaserJet printer family.

The printer needs to be cleaned.

Clean the printer. See the HP LaserJet 1000 Series user guide.

A single sheet of paper is defective.

Try reprinting the job.

The print density needs to be adjusted.

Adjust the print density from the device configuration utility.

The moisture content of the paper is inconsistent, or the paper has moist or wet spots on the surface.

Make sure that the media meets specifications, detailed in the Print Media Guide for the HP LaserJet printer family.

The paper was damaged by inconsistent manufacturing processes.

Make sure that the media meets specifications detailed in the Print Media Guide for the HP LaserJet printer family.

A draft mode or EconoMode is selected in the software.

Clear the printer software EconoMode check box.

The toner cartridge is defective.

Replace the toner cartridge. See "Toner cartridge" on page 15.

The photosensitive drum inside the toner cartridge is scratched.

Replace the toner cartridge. See "Toner cartridge" on page 15.

The fuser is damaged or has an obstruction.

Replace the fuser. See "Fuser assembly" on page 42.

Problem

Toner specks appear on the printed page.

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Characters are only partially printed (also referred to as dropouts).

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Vertical lines appear on the printed page.

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Problem

Cause Solution

The printed page has a gray background.

The print density setting is set too heavy. Decrease the amount of background shading through the device configuration utility.

The media basis weight is too heavy. Change the media to a light basis weight.

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The humidity level is too low. Very low humidity can increase the amount of background shading. Move the printer to a different location, or decrease the background shading through the device configuration utility.

The toner cartridge needs to be Replace the toner cartridge. See "Toner replaced. cartridge" on page 15.

Toner smears appear on the printed page.

If the toner smears appear on the leading Wipe the media guides with a dry, lint-

edge of the media, the media guides are free cloth.

dirty.

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The media you are using does not meet Make sure that the media meets HP's specifications (for example, it is too specifications detailed in the Print Media moist or too rough). Guide for the HP LaserJet printer family.

The toner cartridge needs to be Replace the toner cartridge. replaced.

The fuser temperature is too low. Select Optimize for: in the Paper tab of the printer driver. Make sure that it is set for the appropriate media.

The toner is loose, and it does not stay attached to the printed

The inside of the printer is dirty. Clean the printer. See your

HP LaserJet 1000 Series user guide.

The media you are using does not meet Make sure that the media meets HP's specifications (for example, it is too specifications detailed in the Print Media moist or too rough). Guide for the HP LaserJet printer family.

page.

The toner cartridge needs to be Replace the toner cartridge. replaced.

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The high voltage contacts are dirty or See see "High-voltage power supply damaged. check" on page 84.

The high voltage contacts are are not in Verify the high voltage contacts are proper contact with the toner cartridge. installed correctly and are properly contacting the toner cartridge.

The printer driver is not set for the correct 1. Select Optimize for: in the Paper tab media. of the printer driver. Select the correct media.

2. Select the correct media through the device configuration utility.

The power strip is not working correctly. Plug the printer directly into an ac outlet.

Problem

Cause Solution

Repetitive vertical defects appear on the printed paae.

If the repetitive mark occurs at equal Use the defect ruler to identify the distance between occurrences, either the spacing. Check the appropriate toner cartridge or a printer roller is component and replace if necessary. damaged. (see "Repetitive image defect ruler" on page 87.)

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The internal parts have toner on them. If the defects occur on the back of the page, the problem will probably correct itself after a few more printed pages.

Otherwise, clean the printer. See your HP LaserJet 1000 Series user guide.

The printer driver is not set for the correct 1. Select Optimize for: in the Paper tab media. of the printer driver. Select the correct media. (This affects the current print job only.)

2. Select the correct media through the device configuration utility.

Characters are misformed and are producing

The media is too slick. Try a different media. Make sure that the media meets specifications detailed in the Print Media Guide for the HP LaserJet printer family.

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The printer driver is not set for the correct 1. Select Optimize for: in the Paper tab media. of the printer driver. Select the correct media. (This affects the current print job only.)

2. Select the correct media through the device configuration utility.

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ages are kewed.

The media is loaded incorrectly. Reload the media, and make sure that the media guides are not adjusted too tightly in or too loosely against the media stack.

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The input tray is too full. Remove some of the sheets. The input tray can hold up to 250 sheets of 20-lb (75-g/m2) bond weight paper (less for heavier paper) or from 20 to 30 envelopes.

The type and quality of media you are Make sure that the media meets using does not meet HP's specifications. specifications detailed in the Print Media

Guide for the HP LaserJet printer family.

Problem

Cause Solution

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he printed age has cur r waves.

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The environment is too warm or too 1. Both high temperatures and high humid. humidity levels cause media to curl.

Move the printer to a different environment.

2. Use a different media. Make sure that the media meets specifications detailed in the Print Media Guide for the HP LaserJet printer family.

The media was in the input tray too long. Turn the stack of media over and put it back in the tray.

Rotate the media 180° and put it back in the tray.

The standard paper path is not working Open the straight-through output door on correctly. the back of the printer and use this paper path.

The fuser temperature is too high. Select Optimize for: in the Paper tab of the printer driver. Make sure that it is set for the appropriate media.

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arge mounts of oner are cattered round the haracters.

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The media is resisting the toner. 1. Use a different media. Make sure that the media meets specifications detailed in the Print Media Guide for the HP LaserJet printer family.

2. Turn the stack of media over and put it back in the tray.

3. Use media that is designed for laser printers.

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