Problem

Vertical white or faded stripes appear on the copy.

Unwanted lines appear on the copy.

Black dots or streaks appear on the copy.

Cause

The media might not meet HP specifications.

One or more print cartridges might be low.

Tray 1 might not be placed correctly.

The flatbed scanner or the ADF glass might be dirty.

The photosensitive drum inside the print cartridge might have been scratched.

Ink, glue, correction fluid, or an unwanted substance might be on the automatic document feeder (ADF) or flatbed scanner.

Solution

Use media that meets

HP specifications. See Media specifications.

Replace any low print cartridges. See Changing a print cartridge.

Verify that tray 1 is in place.

Clean the flatbed scanner or the ADF glass. See To clean the scanner glass.

Install a new HP print cartridge. See Changing a print cartridge.

Clean the device. See Cleaning the device.

Copies are too light or dark.

Text is unclear.

The printer driver or device software settings may be incorrect.

The printer driver or device software settings may be incorrect.

Verify that the quality settings are correct. See Adjusting the copy quality.

See the device software Help for more information about changing the settings.

Verify that the quality settings are correct. See Adjusting the copy quality.

See the device software Help for more information about changing the settings.

Media-handling problems

Problem

Cause

Poor print quality or toner

The paper is too moist, too

adhesion

rough, too heavy or too

 

smooth, or it is embossed or

 

from a faulty paper lot.

Solution

Try another kind of paper, between 100 and 250 Sheffield, 4 to 6% moisture content.

252 Chapter 14 Troubleshooting

ENWW

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Image 268
HP 2830, 2840, 2820 manual From a faulty paper lot