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| Troubleshooting |
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Examples of poor print quality | Recommendation |
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| Make sure that you use paper that meets our specifications. See |
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| If you use label sheets for laser printers, the glue from the sheets |
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ABCDEFGH |
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abcdefghijk | may sometimes stick to the OPC drum surface. Clean the drum |
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A B C D |
| unit. See Cleaning the drum unit in Appendix A of the Advanced |
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| User's Guide. |
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a b c d e |
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Do not use paper that has clips or staples because they will |
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0 1 2 3 4 |
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| scratch the surface of the drum. |
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Black toner marks across the | If the unpacked drum unit is in direct sunlight or room light, the unit |
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may be damaged. |
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| page | The toner cartridge may be damaged. Put in a new toner |
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| cartridge. See Replacing the toner cartridge on page 29. |
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| The drum unit may be damaged. Put in a new drum unit. See |
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| Clean the corona wire inside the drum unit by sliding the green |
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| tab. See Cleaning the corona wire on page 34. |
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| Make sure the green tab of the corona wire is at the home |
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| ABCDEFGH |
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| abcdefghijk | position (a). |
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| A B C D | The drum unit may be damaged. Put in a new drum unit. See | B | ||||
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| The toner cartridge may be damaged. Put in a new toner |
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| cartridge. See Replacing the toner cartridge on page 29. |
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Black lines down the page | The fuser unit may be contaminated. Call Brother Customer |
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Service. |
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Printed pages have toner stains |
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down the page. |
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| The toner cartridge may be damaged. Put in a new toner |
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| cartridge. See Replacing the toner cartridge on page 29. |
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| The drum unit may be damaged. Put in a new drum unit. See |
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| ABCDEFGH |
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| abcdefghijk |
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| A B C D | Check if the Toner Setting for Replace Toner is set to |
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| a b c d e | Continue (Continue mode). See Toner settings in Chapter 1 of |
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0 1 2 3 4 |
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| the Advanced User's Guide. |
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| Make sure that a torn piece of paper is not stuck inside the |
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White lines down the page | machine blocking the scanner. |
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63 