Improving the print quality- Page 169

Troubleshooting

160

7

Improving the print quality

7

If you have a print quality problem, print a test page first (see 

Menu table

on page 78). If the printout looks 

good, the problem is probably not the printer. Check the interface cable or try the printer on another computer.

This section gives information on the following topics.

Note

You can resolve a print quality problem by replacing a toner cartridge with a new one when the toner 
indicators start blinking or the LCD shows the 

Toner Life End

 message.

Examples of poor print quality

Recommendation

White lines or bands or ribbing 
across the page

Make sure that the printer is on a solid level surface.

Make sure that the back cover is closed properly.

Make sure that the toner cartridges are installed properly.

Make sure that the drum unit is installed properly.

Put in a new drum unit. (See 

Replacing the drum unit

on page 106.)

Colors are light or unclear on the 
whole page

Make sure that the recommended paper was used.

Change the paper to freshly unpacked paper.

Make sure that the back cover is closed properly.

Shake the toner cartridges gently.

Wipe the scanner windows with a dry lint free soft cloth. (See 

Cleaning the 

inside of the scanner windows

on page 124.)

White streaks or bands down the 
page

Shake the toner cartridges gently.

Wipe the scanner windows with a dry lint free soft cloth. (See 

Cleaning the 

inside of the scanner windows

on page 124.)

Identify the missing color and put in a new toner cartridge. (See 

Replacing a 

toner cartridge

on page 99.)

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