| Condition |
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White Spots | White spots appears on the page: | |||||
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| • | The paper is too rough and a lot of dirt from |
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| a paper falls to the inner devices within the |
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| machine, so the transfer roller may be dirty. |
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| Clean the inside of your machine. See page |
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| 10.2. Contact a service representative. |
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| • | The paper path may need cleaning. Contact |
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| a service representative. |
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Vertical lines | If black vertical streaks appear on the page: | |||||
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| • | The drum inside the toner cartridge has |
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| probably been scratched. Remove the toner |
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| cartridge and install a new one. See page |
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| 10.5. |
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| If white vertical streaks appear on the page: | |
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| • | The surface of the LSU part inside the |
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| machine may be dirty. Clean the LSU. See |
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| page 10.2. |
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Color or Black | If the amount of background shading becomes | |||||
background | unacceptable: | |||||
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| • | Change to a lighter weight paper. See page |
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| 5.1. |
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| • | Check the machine’s environment: very dry |
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| (low humidity) or high humidity (higher than |
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| 80% RH) conditions can increase the |
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| amount of background shading. |
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| • | Remove the old toner cartridge and install a |
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| new one. See page 10.5. |
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Toner smear | • | Clean the inside of the machine. See page | ||||
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| 10.2. |
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| • | Check the paper type and quality. See page |
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| 5.1. |
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| • | Remove the toner cartridge and install a |
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| new one. See page 10.5. |
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| Condition |
| Suggested solutions | ||||
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Vertical repetitive | If marks repeatedly appear on the printed side | |||||||
defects | of the page at even intervals: | |||||||
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| • | The toner cartridge may be damaged. If a |
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| A a B b C |
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| repetitive mark occurs on the page, print a | |||
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| A a B b C |
| c |
| cleaning sheet several times to clean the | ||
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| A a B b |
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| cartridge; see page 10.4. After the printout, |
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| C |
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| A a B b C |
| c |
| if you still have the same problems, remove | ||
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| the toner cartridge and install a new one. | ||||
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| A a B b C |
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| See page 10.5. | |||
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| • | Parts of the machine may have toner on |
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| them. If the defects occur on the back of the |
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| page, the problem will likely correct itself |
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| after a few more pages. |
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| • | The fusing assembly may be damaged. |
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| Contact a service representative. |
Background | Background scatter results from bits of toner | |||
scatter | randomly distributed on the printed page. | |||
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| • | The paper may be too damp. Try printing |
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| A |
| with a different batch of paper. Do not open |
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| packages of paper until necessary so that | |
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| the paper does not absorb too much | |
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| moisture. | |
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| • | If background scatter occurs on an | |
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| envelope, change the printing layout to | |
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| avoid printing over areas that have |
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| overlapping seams on the reverse side. |
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| Printing on seams can cause problems. |
•If background scatter covers the entire surface area of a printed page, adjust the print resolution through your software application or the printer properties.
Misformed | • | If characters are improperly formed and | ||
characters |
| producing hollow images, the paper stock | ||
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| may be too slick. Try a different paper. See |
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| page 5.1. |
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| • | If characters are improperly formed and |
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| producing a wavy effect, the scanner unit |
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| may need service. For service, contact a |
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| service representative. |
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Page skew
AaBbCc
AaBbCc
AaBbCc
AaBbCc
AaBbCc
•Ensure that the paper is loaded properly.
•Check the paper type and quality. See page 5.1.
•Ensure that the paper or other material is loaded correctly and the guides are not too tight or too loose against the paper stack.
11.8 <Troubleshooting>