146 CHAPTER SEVENTEEN
DIFFICULTY SUGGESTIONS
Toner scatters and stains Adjust the print conditions by setting the Print Density
the printed page. function. Clean the machine’s interior. See “Regular
Maintenance” and “Cleaning the Drum Unit” in this
chapter. Make sure that you use paper that meets
specifications. See chap. 13. If you still have scattered
toner and the display shows CHANGE DRUM SOON,
replace the drum unit with a new one.
The whole page is printed Wipe the electric terminals. Also, do not use heat-
black. sensitive paper as it will cause this problem. After
cleaning, if the printed pages are still black and the display
shows CHANGE DRUM SOON, replace the drum unit
with a new one.
Nothing is printed on the Make sure that the toner cartridge is not empty. Wipe the
page. electric terminals referring to “Regular Maintenance” and
“Cleaning the Drum Unit” in this chapter. Make sure
that a torn piece of paper does not remain on the scanner
window.
Printed pages are marked Markings may disappear by themselves. Try copying at
regular intervals. multiple pages to clear this problem. Markings may occur
if the machine has not been used for a long time. A
possible cause is that the surface of the drum is marked or
damaged by excessive exposure to light. In this case, replace
the drum unit with a new one.
Printed pages are blurred at Certain environmental conditions such as humidity, high
the center or at either edge. temperatures, etc. may cause this condition to occur. Make
sure the machine is placed on a flat, horizontal surface.
Remove the drum unit with the toner cartridge installed.
Try rocking them from side to side. You may clear a
blurred page by wiping the scanner windows with a clean
soft cloth. (See “Regular Maintenance” and “Cleaning the
Drum Unit” in this chapter.) If a blurred page occurs after
cleaning and the display shows CHANGE DRUM SOON,
replace the drum unit with a new one.
Ghost images appear on Adjust the print conditions by setting the Print Density
printed page. function. Make sure that you use paper that meets the
specifications. Rough surfaces or thick media can cause a
ghost image.
Scattering Toner
White page
Example of Regular Marking

The drum unit is a consumble and it is necessary to replace it

periodically.

Black Page
Ghost Images
Blurred Page