Hi there My brother mfc 9840 cdw is very slow to print. i have rerplaced the drum,beltunit (Everything) but it is still slow. it is 2 years old Can you give me any suggestions please Regards, Patrick Reeves

Do U mean wrinkle the envelopes?,,,,I can solve some MFC-9840-CDW issues, but the 7369N is a guess. Read your manual or do a google search.....There maybe a setting in the 7360N that adjusts printing for card stock and envelopes....

not installed all the way,reinstall

You can download the Brother printer drivers from their support WEB site. Please click on this link and select your model printer to download : - http://www.brother.com.au/ProductsSolutions.aspx

On the TN-155 toner cartridge, a mechanical 'flag gear' that will reset the counter for each individual cartridge when first 'triggered'.
After each page print, the appropriate counters are incremented regardless of toner content (that is why it is still printing 'flawlessly') and after a pre-determined count has been reached, you will get a warning to change the drum as is will then be notionally (not actually) empty.
Before you decide to reset the 'flag gear' on the drum, make sure you are not actually nearing the physical empty state ... it might be a wiser decision to purchase a refill kit which should come with instruction on how to fill and reset the 'flag gear' (this needs some dismantling of the drum cartridge) or buy a compatible or genuine toner drum cartridge.
In any case, Google 'Brother drum flag gear' for more information.
Good luck!

Remove drum & cartridge and clean opc drum with dry soft cloth

Hi
I have put a PDF files on my website for you to download.
This manual 2 it the one you need

Just click on the links it will download for you.
It got all you need to know in this file.
You can read it on site and print it strait off the website or save it to your PC then print it out.

Click LINK= http://www.4all2sell.com/pdf/Brother-MFC-9840CDW-Manual-2.PDF

You will need a adobe reader to see this file If you not got an Pdf reader you can download it off this link free.
http://www.adobe.com/products/reader/

Please come back and just gave a vote, it will gave me some satisfaction to know am helping some one so I will keep on helping.
All The Best: Pineworks
All files on my website are only there for a limited time

Purchase some printer cleaning paper (transparency sheets) to clean the printer's media path. Run through 10+ times if necessary.

Hope this helps.

Print a User Settings Report:

Menu
6
5
Press Mono Start or Colour Start
Press Stop/Exit

Cheers

Dirk

Hi,
The first thing i would try to do is clean the corona wire on the drum unit. It might also be a faulty magenta cartridge.

Here's the link; http://www.amazon.com/Brother-MFC9600-Flatbed-Laser-Multifunction/dp/B00004U4A0 Under "product details". Hope this helps :)