SYMPTOMS | POSSIBLE CAUSES | STEPS TO TAKE |
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Horizontal Lines and | When the interval is about 94 | Wipe it lightly with a soft cloth. Replace |
spots appear | mm (4 in), the image drum | the image drum cartridge when it is |
periodically. | (the green tube) is damaged | damaged. |
| or dirty. |
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| When the interval is about 42 | Open/close the top cover, and print |
| mm (1.5 in), there may be | again. |
| foreign particles in the image |
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| drum cartridge. |
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| When the interval is about 87 | Replace the fuser unit. |
| mm (3.5 in), the fuser unit is |
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| damaged. |
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| The image drum cartridge has | Replace the image drum cartridge if |
| been exposed to light. | the problem is not resolved. |
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White area of paper is | Paper contains static. | Use paper stored in proper |
lightly stained. |
| temperature and humidity conditions. |
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| Too thick paper is used. | Use thinner paper. |
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| The toner is low. | Open the top cover and tap the |
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| cartridge a few times to evenly |
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| distribute any remaining toner. If |
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| symptoms persist, replace the toner |
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| cartridge. |
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Periphery of the letters | The LED head is dirty. | Wipe the LED head with a soft, |
is smudged. |
| cloth. |
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Toner comes off when | The thickness and type of the | Set the correct value of Media Type |
it is rubbed. | paper are incorrectly set. | and Media Weight in the Paper Setup |
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| menu or set one value thicker for |
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| Media Weight. |
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| Recycled paper is used. | Set one value thicker for Media Weight |
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| in the Paper Setup menu. |
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Glossiness is not | The thickness and type of the | Set the correct value of Media Type |
uniform. | paper are incorrectly set. | and Media Weight in the Paper Setup |
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| menu or set one value lighter for Media |
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| Weight. |
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Dealing with Unsatisfactory Copying
As well as the suggestions provided in “Dealing with unsatisfactory printing” on page 153, ensure that the scanner unit glass is clean at all times. Refer to “...the Document Glass” on page 133.
Troubleshooting > 154