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Minolta 7228 moved from one location to another now copies not clean.

Pull and pushing glass cleaning knob and corona cleaning knob. I am tech savvy. Strong electronic backround.

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  • Contributor
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I doubt that moving the machine has caused the problem shown.
Regardless- the copier drum is not being cleaned.
I would begin by replacing the Drum Blade.
It is technical and will require your knowledge of the service manual procedure.

Good luck

Posted on Apr 03, 2015

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  • Konica Minolta Master
  • 1,316 Answers

Replace the drum and the drum cleaning blades(two),and inspect rhe fusing unit upper fuser roller and the fuser roller oil WEB.

Posted on Apr 06, 2015

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  • Konica Minolta Master
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The machine probably should have been moved with the toner cartridge removed.

Posted on Jan 14, 2015

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Posted on Jan 02, 2017

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1 Answer

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When is the last time the developer and drum where replaced? When the last time was a PM done? Very 250,000 copies a PM must be done? Which replaces the Corona Wires, Developer, Drum, Corona Grid, Web roller for fuser (Hot Part). Also during the PM the Tech should clean the toner out of the Waste Toner collection unit on the image unit. also clean the area around the drum and developer roller.

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How do I clean corona units on Minolta 1081 copier?


Gregory, First remove the drum unit. Then remove the Charge unit. located about the drum on the drum cartridge (Not Inside the Machine) Then remove scortron grid push the front in to release you then have access to the charge wire this model may have the Charge comb type be care the combs are sharp if they are wires be gentle and use a eraser to gentle clean the wires they are very thin. During the copy process the wire/comb applies a HV charge on the drum prior to the image from the mirrors being place on the drum before the paper arrives underneath the drum.

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Remove the old drum unit,remove the drum and the drum cleaning blade,clean the charge corona wire and grid,install the new drum and drum cleaning blade,clean the image transfer /separator corona wire,clean the optical parts(mirrors ,lens,glass)clean the AIDC sensoe located under OPC drum,reinstall the drum unit in the copier,enter in the technical Rep mode,place 5 sheets A3 paper on the original glass and perform F5 AIDC sensor(Auto image density control).

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My minolta ep4000 copy machine print the pages black why?


Clean the optic sisitem componenets,mirrors(4 mirrors),lens,original glass,clean the erase lamp obturation filter(located in OPC drum area,clean the drum charge corona unit(wire,grid).

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Have a black line on all my scanned files, runs the length of the page, about 1 1/2 inches from the left edge.


To determine if the vertical lines appearing on your printed documents are related to a printing or scanning issue, print a test page by pressing MENU, 4 (Printer), 2 (Print Options), 3(Test Print) and COLOR START.
If the vertical lines appear on the Test Print continue to Procedure A:Cleaning the Corona Wires Inside the Drum.
If the vertical lines do NOT appear on the Test Print continue to Procedure B: Cleaning the Scanner Glass.
Procedure A: Cleaning the Corona Wires Inside the Drum:
NOTE: Brother strongly recommends that customers do not use generic drumunits and/or toner cartridges, or refill their Brother toner cartridge. Each Brother laser printer is designed to work at pre-set temperatures that are matched exactly to each of our individual toner formulations. Each individual component is designed to work with the other to ensure quality and reliability. Using non-Brother supplies may affect the hardware performance, print quality and machine reliability. The Brotherlimited warranty does not apply to any problem that is caused by the useof unauthorized third party drum units, toner cartridges or toner.
A1. Power off the Brother machine using the power switch located on the right side of the machine.
A2. Press down on the front cover release lever and open the front coverby pulling it towards you.
A3. Hold the green handle of the drum unit (labeled 1). Lift the drum unit up and then pull it out until it stops.
NOTE: If you cannot pull the drum unit out, make sure that the front cover is fully open.
A4. Remove the toner cartridges one at a time, by holding the handle of the cartridge and lifting it up and out of the drum unit.
Note: We recommend you place the toner cartridge(s) on a clean, flat surface with a piece of disposable paper underneath it in case you accidentally spill or scatter toner.
A5. Lift the white plastic corona wire cover by lifting the tabs locatedon the right and left side of the cover.
A6. Clean the corona wire inside the drum unit by gently sliding the green tab from left to right several times.
Note: Be sure to return the tab to the home position. If you do not, printed pages may have a vertical stripe.
A7. Close the corona wire cover.
A8. Repeat Steps 5 through 7 to clean each of the remaining three coronawires.
A9. Reinstall the toner cartridge(s):
NOTE: Before reinstalling the toner cartridge, shake the toner cartridgeside to side.
Hold the handle of the toner cartridge and slide the toner cartridge into the drum unit. Make sure that you match the toner cartridge color to the same color label on the drum. Fold down the toner cartridge handle once the toner cartridge is in place. Repeat this for all the toner cartridges.
A10. Push the drum unit back into the machine until it clicks into place.
A11. Close the front door and power on the Brother machine.
A12. Print a test page by pressing Menu, 4 (Printer), 2 (Print Options),3(Test Print) and Color Start.
Procedure B: Cleaning the Scanner Glass
B1. For safety reasons, power the Brother machine Off using the power switch located on the right side of the machine.
B2. Lift the Document Cover and clean the following with a lint-free cloth moistened with a non-flammable glass cleaner:
a. Run your fingertip over the scanner glass of the flat bed to check for debris. If you feel debris, clean the entire glass area but concentrating in the area in which you felt the debris. (Caution! Do notpress down on the glass very hard.)
b. Run your fingertip over the scanner glass on the left to check for debris. If you feel debris, clean the entire glass area but concentrating in the area in which you felt the debris.
c. The white plastic pad located on the underside of the Document Cover
d. The white plastic pressure bar located to the left of the white plastic pad.
B3. Close the Document Cover.
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b. To make a copy using the flat bed, lift the Document Cover of the flat bed, place the document face down on the scanner glass (make sure the ADF is empty) and close the Document Cover. Press the COPY mode key located below the LCD display and then COLOR START. If the problem continues, repeat Steps 2a and 2c at least 3 additional times.

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1 Answer

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1 Answer

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1 Answer

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