Improving the print quality; Examples of poor print ; White lines across the page- Page 61

Troubleshooting and routine maintenance

49

B

Improving the print quality

B

Examples of poor print 
quality

Recommendation

White lines across the page

„

Make sure that you use paper that meets our specifications. A rough 
surfaced paper or thick print media can cause the problem. (See 

Acceptable paper and other print media

 on page 12.)

„

Make sure that you choose the appropriate media type in the printer 
driver or in the machine’s Paper Type menu setting. (See 

Acceptable 

paper and other print media

 on page 12 and 

Basic tab in the Software 

User’s Guide on the CD-ROM

.)

„

The problem may disappear by itself. Print multiple pages to clear this 
problem, especially if the machine has not been used for a long time.

„

The drum unit may be damaged. Put in a new drum unit. (See 

Replacing the drum unit

 on page 74.)

White lines down the page

„

Wipe the laser scanner windows with a soft cloth. (See 

Cleaning the 

laser scanner window

 on page 64.)

„

Make sure that a torn sheet of paper is not inside the machine 
covering the scanner window.

„

The toner cartridge may be damaged. Put in a new toner cartridge. 
(See 

Replacing a toner cartridge

 on page 70.)

„

The drum unit may be damaged. Put in a new drum unit. (See 

Replacing the drum unit

 on page 74.)

Hollow print

„

Make sure that you use paper that meets our specifications. (See 

Acceptable paper and other print media

 on page 12.) 

„

Choose 

Thick paper

 mode in the printer driver, choose 

Thick

 in the 

machine’s Paper Type menu setting or use thinner paper than you 
are currently using. (See 

Paper type

 on page 19 and 

Basic tab in the 

Software User’s Guide on the CD-ROM

.)

„

Check the machine’s environment. Conditions such as high humidity 
can cause hollow print. (See 

Choosing a location

 on page 36.)

„

The drum unit may be damaged. Put in a new drum unit. (See 

Replacing the drum unit

 on page 74.)

Gray

background

„

Make sure that you use paper that meets our specifications. (See 

Acceptable paper and other print media

 on page 12.) 

„

Check the machine’s environment. Conditions such as high 
temperatures and high humidity can increase the amount of 
background shading. (See 

Choosing a location

 on page 36.)

„

The toner cartridge may be damaged. Put in a new toner cartridge. 
(See 

Replacing a toner cartridge

 on page 70.)

„

The drum unit may be damaged. Put in a new drum unit. (See 

Replacing the drum unit

 on page 74.)

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