Question about Brother MFC-9840CDW Laser Printer
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Posted on Jan 02, 2017
Front cover must be open
Press The "Clear" key on the top panel
Press 1 to reset the drum count
Close the over
Posted on Feb 06, 2009
i have the same problem there is a phone number in the maual wich is the Brother support center 18772768437, after a few unnecesary question they will give a phone number of a company near your area that do maintenances services to copy machines, they are the one who will replace those parts, well at least that is what i think i just called them they are getting the prices, good luck.
Posted on Mar 12, 2009
When you replace the drum unit with a new one, you need to reset the drum counter by completing the following steps:
"Reset Parts Life".
Posted on Aug 29, 2009
You can access the reset menu by pressing the 3 and 9 button at the same time.
Posted on Mar 25, 2010
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Colored vertical streaks - looks like a transfer belt problem, and it's not user fixable. You may need a new belt unit - you can find it for around US$ 80-120, but you may want to have a technician inspect the unit first, since it could arguably be the drum instead, and you don't want to fork around US$ 100 and replace the wrong part.
You can try showing a printer sample at a print shop; by looking at the streaks it is possible to diagnose drum, fuser or belt problems.
Here you find a much more detailed page, for another printer model, but the issues are mainly the same for most color printers:
Posted on Mar 25, 2010
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