User Check
• Damp (wet) paper might be used. Try to change to freshly unpacked paper.
• Toner may be empty. Replace the toner cartridge with a new one.
• If the problem is not solved after printing a few pages, the drum unit may have glue from label stock on the exposure drum surface. Refer to the previous page, and wipe it off gently with a cotton swab.
•The drum unit may be damaged. Replace the drum unit with a new one.
Step | Cause | Check | Result | Remedy |
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| Toner attached | Are the horizontal |
| This problem will |
| on the develop | stripes at 41.0 mm |
| disappear by printing |
1 | roller | (develop roller | Yes | approximate 10 pages. If |
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| circumference) |
| the same problem occurs, |
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| intervals? |
| replace the toner cartridge. |
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| Scratch and Dirt | Are the horizontal stripes |
| Replace the drum unit. |
2 | on the exposure | at 75.0 mm (exposure | Yes |
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drum | drum circumference) |
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| intervals? |
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| Drum unit | Are the electrodes on |
| Clean both electrodes |
3 | connection | the drum unit and | Yes | |
| failure | machine body dirty? |
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| Scratch and Dirt | Are the horizontal |
| Replace the fuser unit. |
4 | on the heat roller | stripes at 78.5 mm (heat | Yes |
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| roller circumference) |
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| intervals? |
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| HVPS PCB | Is the problem solved |
| Replace the HVPS PCB |
5 | failure | after replacing the | Yes | ASSY. |
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| HVPS PCB ASSY? |
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| Main PCB failure | Is the problem solved |
| Replace the main PCB |
6 |
| after replacing the main | Yes | ASSY. |
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| PCB ASSY? |
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User Check
• Clean the inside of the machine and the corona wire in the drum unit. If the same problem occurs after cleaning, replace the drum unit with a new one.
• The paper tray ground terminal provided in the machine body may be dirty. Clean the contact with a dry cloth.
Confidential |