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Please clean the drum charge roller use the izopropilalcool,clean the charge roller cleaning roller,clean use the vacuum cleaner the waste toner (located under transfer assembly 6 screw),activate the ATDC and AIDC sensor configuration.
Most likely it's the toner cartridge. Remove the cartridge, turn it over and slide open the cover over the drum. The drum is the colored cylinder running from one side of the cartridge to the other. Do you see what appears to be the same streaks going around the drum? The drum should be completely clean and free of any lines or streaks. If it has lines or streaks then the cartridge is bad.
Only other possibility here would be the scanner glass. Make sure your streaks don't go away when making a copy from the glass. If they do you could have dirt or trash on your scanner glass.
Good Luck and thank you for using Fixya.
The green roller is the drum which has a cleaning blade to remove excess toner, when the drum gets older it becomes clogged and will dump toner back out onto the drum. Just some info on it. Best fix is replace the drum, you could take it apart and attempt to dump and clean it but it's rarely worth doing that.
If this is only happening with copies and not straight prints, it is possible that the problem is with the scanning unit. Use the soft cloth to clean the scanner area to the left side of the machine where pages are scanned when run through the page feeder. A spec of dust or other debris in this area will appear as a streak along the length of the page.
If it occurs on all prints, You may need to replace the drum or clean the fuser unit.
Do the streaks appear when you use the contact glass or just when you use the Automatic feeder? If both, then you need to replace either the (drum unit) or the fuser roller(s). If it just happens through the auto feeder, then lift up the "feed-in section" (left side) and clean the narrow scanner glass.
Does this streaking problem occur when printing (not copying)? If it does then you are probably looking at a consumable issue. Alot of times black streaking is caused by a defective or spent drum. Is your drum new? There is also a blue piece on the drum unit used to clean the corona wire that cleans the drum. Have you tried moving it back and forth several times?
If the problem only happens when copying and the streaks are as bad as you make them out to be then you problem have a bad CIS unit (scans your originals for faxing or copying)
you don't mention whether the document you are copying also appears on the paper.If it does you could have 1 of 2 problems- The drum cleaning system could be at fault or- the fuser roller has picked up some **** easy test...... run copies and when the 1st copy edge appears switch OFF. This is a crash stop.Now examine the sheets in there.Is the stripe on the copy before the fuser (Heat) roller? If yes you could have a drum cleaning problem, usually fixed by changing the drum module.If no and the stripe appears after the heat roll, the problem is with the fuser system,dirty rolls etc. There are a number of other problems with stripes, but you have to start somewhere! If the document does NOT appear on the copy, forget all above, could be scan or ROS problem