146 C H A P T E R S E V E N T E E N
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, | |
Scattering Toner | replace the drum unit with a new one. | |
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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 | |
Black Page | with a new one. | |
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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 | |
White page | window. | |
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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 | |
Example of Regular Marking | the drum unit with a new one. | |
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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 | |
Blurred Page | cleaning and the display shows CHANGE DRUM SOON, | |
replace the drum unit with a new one. | ||
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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. | |
Ghost Images |
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The drum unit is a consumble and it is necessary to replace it periodically.
