T R O U B L E S H O O T I N G A N D M A I N T E N A N C E 151
DIFFICULTY | SUGGESTIONS |
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. |
Example of Regular Marking |
|
Printed pages are blurred at | Certain environmental conditions such as humidity, high |
the center or at either | temperatures, etc. may cause this condition to occur. Make |
edge. | 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 |
Blurred Page | 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. |
Ghost Images |
|
The drum unit is a consumable item and it is necessary to replace it periodically.
