150 C H A P T E R S E V E N T E E N
Copy Quality
Difficulties
Print Quality
Difficulties
DIFFICULTY | SUGGESTIONS |
Vertical streaks appear in | Sometimes you may see vertical streaks on your copies. |
copies. | Either the scanner or the primary corona wire for printing is |
| dirty. Clean them both. |
|
|
Printouts are too dark or | Adjust the print conditions by setting the Print Density |
light. | function, It has been factory set to the middle position.See |
| “Setting the Print Density” in chap. 5. |
|
|
Printed pages contain white | You may fix this by wiping the scanner windows with a clean |
stripes. | soft cloth. (See “Regular Maintenance” and “Cleaning the |
| Drum Unit” in this chapter.) If you still see white stripes or |
| faint images and the display shows CHANGE DRUM SOON, |
White Stripes or | replace the drum unit with a new one. |
| |
Faint lmages |
|
|
|
Printed pages are stained | Clean the machine’s interior and the primary corona |
with toner or have vertical | wire of toner cartridge. See “Regular Maintenance” and |
stripes. | “Cleaning the Drum Unit” in this chapter. Make sure that |
| the tab of the corona wire is at the home position. If after |
| cleaning, you still see dark stripes or toner stains and |
| the display shows CHANGE DRUM SOON, replace the |
Dark Stripes or Toner Stains | drum unit with a new one. |
|
|
Printed pages have white | Make sure that you use paper that meets the specifications. |
spots in black text and | Rough surface or thick media can cause the problem. If |
you graphic areas. | you still see white spots and the display shows CHANGE |
| DRUM SOON, replace the drum unit with a new one. |
White Spots |
|
|
|
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. 18. If you still have scattered |
| toner and the display shows CHANGE DRUM SOON, |
Scattering Toner | 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 |
Black Page | 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 |
White page | window. |
| |
|
|
