Question about Brother MFC-9840CDW Laser Printer
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Posted on Jan 02, 2017
First off, this is a comment from a random person who may or may not know ALOT about these printers and toner/printer design in general. All toners are not designed to the same specification. Toner is a combination of plastic "pigment" and iron like shavings to make it magentically attracted to the electrical charges within the unit. Different toners conform to different grades and mainly size of the particles within the blend. The manufacturer doesnt only recommend that you use their toner to make them money, yes of course it makes money, but its because when the unit is designed it is designed to use a certain grade of toner, trust me if you put the non-branded toner vs the branded toner under a microscope you would see quite a difference. Often the non-branded toner is much larger in particle size (obviousely because its cheaper to make at this spec). This causes a variety of issues from excess toner not being cleaned off of developer rollers, IDT rollers, or clogging of toner dispenser tubes in the unit and the micro filters contained at the toner dispenser assy and developer assys. Also as for the issue not changing when switching to dell branded toner - the dispenser tubes within this unit contain up to 500-1000 pages worth of toner, making no change in toner you make immediately visible. Also depending on the damage caused by the previous toner, it may not be able to be fixed until all the components in between the toner and final delivery (drum cart) are replaced. In this case more than likely the toner dispenser assy, all developer assy's, and drum cartridge need to be replaced, and than be sure to stick with factory branded toner :)
Posted on Jul 17, 2008
Clean The Print Head Nozzles (Mac OS X) MP500 / MP800
Clean The Print Head Nozzles (Windows) MP500 / MP800
Confirm that the recommended ink tanks are installed properly MP500 / MP800
Install recommended ink tanks in the correct order MP500 / MP530 / MP800 / MP800R / MP830
Perform A Manual Print Head Alignment (Mac OS X) MP500 / MP800 / MP950
Perform A Manual Print Head Alignment (Windows) MP500 / MP800 / MP950
Perform the print head cleaning procedure on MP500 / MP800
Print Head Alignment MP500 / MP800 / MP950
Remove tape from the MP500 / MP800 ink tank
Replace ink tank(s) MP500 / MP800
I hope it helps!!!
Posted on Dec 01, 2008
1. Get compressed air
2. Run Printhead under HOT water, do not worry about contacts getting slightly wet.
3. Blow compressed air with straw attachment into screens where the cartridge nozzle sits on printhead. then let it sit and dry.
4. reinstall print test page
5. if this fails open paint/photoshop and print a page of the color that is not printing correctly. rinse and repeat until colors flow freely.
I have several ip4300s and I have yet to give up the ghost on a printer with a clog ujsing this method.
Posted on Jan 21, 2009
51.22 is a Magenta laser scanner error.
Try removing the magenta restarting the printer and reinstalling.
If that does not work you likely need a laser assm.
You might want to call a tech. to replace.
Posted on Apr 02, 2009
Purchase some printer cleaning paper (transparency sheets) to clean the printer's media path. Run through 10+ times if necessary.
Hope this helps.
Posted on Aug 17, 2009
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