■White vertical streaks

User Check

•Clean the scanner windows of the laser unit with a soft lint-free cloth.

•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

the toner cartridge and

Yes

(Refer to Fig. 1-1, Fig. 1-2.).

connection

machine body dirty?

 

 

 

 

 

failure

 

 

 

 

 

 

 

 

1-29

Confidential