■White vertical streaks

<User Check>

-Clean the scanner windows of the laser unit with a soft lint-free cloth. (Refer to Fig. 3-6.)

-Replace the toner cartridge with a new one.

-Check the machine’s environment. High temperature and high humidity conditions can cause this problem.

-Damp (wet) paper might be used. Try to change to freshly unpacked paper.

-Check if there is no dust in the gap between the toner cartridge and drum frame.

Step

Cause

Check

Result

Remedy

 

 

 

 

 

 

 

 

 

 

 

Condensation

Has condensation

 

Try to print several pages

1

 

occurred inside the

Yes

or leave the machine 2

 

machine?

hours to allow it to reach

 

 

 

 

 

 

 

room temperature.

 

 

 

 

 

2

Transfer failure

Is the transfer roller

Yes

Replace the drum unit.

 

scratched?

 

 

 

 

 

 

 

 

 

 

 

Scanner

Is the problem solved

 

Replace the laser unit.

3

windows of laser

after replacing the laser

Yes

 

 

unit failure

unit?

 

 

 

 

 

 

 

■White horizontal streaks

<User Check>

-Check that the appropriate media type is selected in the printer driver.

-The problem may disappear by itself. Try printing multiple pages to

clear this problem especially if the machine has not been used for a long time.

-The drum unit may be damaged. Replace the drum unit with a new one.

Step

Cause

Check

Result

Remedy

 

 

 

 

 

 

 

 

 

 

 

Toner cartridge

Are the electrodes on

 

Clean both electrodes.

1

electrode contact

the toner cartridge and

Yes

(Refer to Fig. 3-2, Fig. 3-3.)

 

failure

machine body dirty?

 

 

 

 

 

 

 

 

Drum unit

Are the electrodes on

 

Clean both electrodes.

2

electrode contact

the drum unit and

Yes

(Refer to Fig. 3-2, Fig. 3-3.)

 

failure

machine body dirty?

 

 

 

 

 

 

 

3-53

Confidential