Condition

Suggested Solutions

 

 

 

 

 

Dropouts

If faded areas, generally rounded, occur randomly

 

 

 

 

on the page:

 

 

A a B b C

 

A single sheet of paper may be defective. Try

 

 

A a B b C

 

reprinting the job.

 

 

 

The moisture content of the paper is uneven or

 

 

A a B b C

 

 

 

 

the paper has moist spots on its surface. Try a

 

 

A a B b C

 

different brand of paper. (See "Print media

 

 

 

specifications" on page 92.)

 

 

A a B b C

 

 

 

 

The paper lot is bad. The manufacturing

 

 

 

 

processes can cause some areas to reject

 

 

 

 

 

 

 

 

toner. Try a different kind or brand of paper.

Change the printer option and try again. Go to Printing Preferences, click Paper tab, and set type to Thick. (See "Opening printing preferences" on page 48.)

If these steps do not correct the problem, contact a service representative.

White Spots

 

If white spots appear on the page:

 

 

 

 

 

The paper is too rough and a lot of dirt from a

 

 

 

 

 

 

 

 

 

 

paper falls to the inner devices within the

 

 

 

 

 

machine, so the transfer roller may be dirty.

 

 

 

 

 

Clean the inside of your machine. (See

 

 

 

 

 

"Cleaning the inside" on page 65.).

 

 

 

 

 

The paper path may need cleaning. (See

 

 

 

 

 

"Cleaning the inside" on page 65.)

 

 

 

 

 

 

 

 

 

 

 

 

Vertical lines

 

If black vertical streaks appear on the page:

 

 

 

 

 

The surface (drum part) of the toner cartridge

 

 

 

 

 

inside the machine has probably been

 

 

 

 

 

scratched. Remove the toner cartridge and

 

 

 

 

 

install a new one. (See "Replacing the toner

 

 

 

 

 

cartridge" on page 84.)

 

 

 

 

 

If white vertical streaks appear on the page:

 

 

 

 

 

The surface of the LSU part inside the

 

 

 

 

 

machine may be dirty. (See "Cleaning the

 

 

 

 

 

inside" on page 65.)

 

 

 

 

 

 

 

 

 

 

 

Color or Black

 

If the amount of background shading becomes

background

 

unacceptable:

 

 

 

 

 

Change to a lighter weight paper. (See "Print

 

 

 

 

 

media specifications" on page 92.)

 

 

 

 

 

Check the environmental conditions: very dry

 

 

 

 

 

conditions (low humidity) or a high level of

 

 

 

 

 

humidity (higher than 80% RH) can increase

 

 

 

 

 

the amount of background shading.

 

 

 

 

 

Remove the old toner cartridge and, install a

 

 

 

 

 

new one. (See "Replacing the toner cartridge"

 

 

 

 

 

on page 84.)

 

 

 

 

 

 

 

Condition

Suggested Solutions

 

 

 

 

 

 

 

Toner smear

If toner smears on the page:

 

 

 

 

 

 

Clean the inside of the machine. (See

 

 

 

 

 

 

"Cleaning the inside" on page 65.)

 

 

 

 

 

 

Check the paper type and quality. (See "Print

 

 

 

 

 

 

media specifications" on page 92.)

 

 

 

 

 

 

Remove the toner cartridge and then, install a

 

 

 

 

 

 

new one. (See "Replacing the toner cartridge"

 

 

 

 

 

 

on page 84.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Vertical repetitive

If marks repeatedly appear on the printed side of

defects

the page at even intervals:

 

 

 

 

 

 

The toner cartridge may be damaged. If you

 

 

 

 

 

 

still have the same problem, remove the toner

 

 

 

 

 

 

cartridge and, install a new one. (See

 

 

 

 

 

 

"Replacing the toner cartridge" on page 84.)

 

 

 

 

 

 

 

 

 

 

 

 

Parts of the machine may have toner on them.

 

 

 

 

 

 

If the defects occur on the back of the page,

 

 

 

 

 

 

the problem will likely correct itself after a few

 

 

 

 

 

 

 

 

 

 

 

 

more pages.

 

 

 

 

 

 

The fusing assembly may be damaged.

 

 

 

 

 

 

 

 

 

 

 

 

Contact a service representative.

 

 

 

 

 

 

 

Background

Background scatter results from bits of toner

scatter

randomly distributed on the printed page.

 

 

 

 

 

 

The paper may be too damp. Try printing with

 

 

A

 

 

a different batch of paper. Do not open

 

 

 

 

packages of paper until necessary so that the

 

 

 

 

paper does not absorb too much moisture.

 

 

 

 

If background scatter occurs on an envelope,

 

 

 

 

change the printing layout to avoid printing

 

 

 

 

over areas that have overlapping seams on

 

 

 

 

the reverse side. Printing on seams can cause

 

 

 

 

 

 

problems.

 

 

 

 

 

 

If background scatter covers the entire surface

 

 

 

 

 

 

area of a printed page, adjust the print

 

 

 

 

 

 

resolution through your software application or

 

 

 

 

 

 

in Printing Preferences. (See "Opening

 

 

 

 

 

 

printing preferences" on page 48.)

 

 

 

 

 

 

 

Toner particles are

The toner might not adhere properly to this type of

around bold

paper.

characters or

Change the printer option and try again.

pictures

Go to the Printing Preferences, click the

 

 

 

 

 

 

Paper tab, and set the paper type to

 

 

 

 

 

 

 

 

 

 

 

 

Recycled.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Troubleshooting_ 79

Page 79
Image 79
Samsung CLP775ND manual Dropouts, White Spots, Vertical lines, Color or Black, Background, Toner smear, Vertical repetitive