HP 3100, 3150 manual Horizontally, Aligned black Installed Streaks or smears Appear

Problem Cause Solution

Vertically-aligned	The HP LaserJet 3100/3150 product
black streaks or	needs to be cleaned.
smears appear on
successive pages.	The toner cartridge is damaged.

See the appropriate sections of Chapter 3, “Maintenance.”

Replace the toner cartridge if maintenance procedures do not improve print quality.

There is a problem in the heating element. Perform the “Heating element check,” which is discussed later in this chapter.

If scanned images have unwanted lines through them:

There is ink, glue, white-out, or some other substance on the contact image sensor.

Slick paper caused the document scanner trouble in scanning.

The HP LaserJet 3100/3150 product needs to be recalibrated.

See the appropriate sections of Chapter 3, “Maintenance.”

Use a carrier sheet to send the item.

Follow the instructions later in this chapter to recalibrate the document scanner.

Horizontally	The toner cartridge was improperly
aligned black	installed.
streaks or smears
appear.

Make sure you removed the entire length of the sealing tape from the toner cartridge before you installed it.

The toner cartridge is defective.

The HP LaserJet 3100/3150 product needs to be cleaned.

There is a problem in the heating element.

A gear is damaged.

Replace the toner cartridge.

See the appropriate sections of Chapter 3, “Maintenance.”

Perform the “Heating element check,” which is discussed later in this chapter.

Perform the “Drum rotation functional check,” which is discussed later in this chapter.

There is a problem in the laser/scanner. Replace the laser/scanner.

If horizontal lines appear in margins and across entire pages on faxes you send:

The HP LaserJet 3100/3150 product needs to be cleaned.

There is a problem in the contact image sensor.

See the appropriate sections of Chapter 3, “Maintenance.”

Replace the contact image sensor.

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