User Check - Page 223

Confidential

9-35

I-9 

White vertical streaks 

User Check 

(1)  Try to wipe the scanner window with a soft cloth. 
(2)  The toner cartridge may be damaged.  Install a new toner cartridge. 
(3)  Check the printer’s environment.  High temperature and high humidity 

conditions can cause this problem. 

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

paper. 

Possible cause 

Step

Check 

Result

Remedy 

Transfer 
failure 

1 

Is the transfer roller 
scratched? 

Yes  Replace the drum unit. 

Condensation 

2 

Has condensation occurred 
inside the printer? 

Yes  Try to print several pages or leave 

the printer 2 hours to allow it to 
reach room temperature. 

I-10 

White horizontal streaks 

User Check 

(1)  Check the paper used meets the recommended paper specifications.  A 

rough surfaced paper, damp paper or thick media can cause the problem. 

(2)  Check that the appropriate media type is selected in the printer driver. 
(3)  The problem may disappear by itself.  Try printing multiple pages to 

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

(4)  The drum unit may be damaged. Install a new drum unit. 

Possible cause 

Step 

Check 

Result 

Remedy 

Ground 

contacts 

Developing 
bias contact 
failure 

1 

Are the developing bias 
contacts between the 
printer body and toner 
cartridge dirty? 

Yes 

Clean the electrodes at 
both sides. 

(4)