Question about Brother MFC-9420CN All-In-One Laser Printer

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Makes loud sounds

The printer makes loud, long sounds like it is trying to roll or catch paper when it starts up and when it prints. Any suggestions???

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  • Anonymous Feb 07, 2008

    I have this problem too with my Brother MFC-9420CN. It is only 8 mos. old and has a loud (grinding) sound. Like it is having a hard time getting the paper.

  • loud brother Feb 07, 2008

    My brother MFC-9420CN has that same loud noise. It is only 8 mos. old.

    The loud (grinding) sound when its trying to get the paper is terrible. Help!

    What can I do?

  • wutup Mar 07, 2008

    same problem. it is very annoying, especially when you are on the phone. i can't wait until this thing dies so i can buy an hp or epson, anything but brother.

  • hghmiami Apr 29, 2008

    Same problem here plus the piece of junk is wrinkling the paper. Checked the transfer roll, back cover and fusing unit. I purchased this machine and expect to receive a written warning pending discharge.

  • cpa1aaa Mar 29, 2009

    Brother MFC 9420CN makes tremendous noise?
    While printing a 75 page pdf, it starts out with something that sounds like little duck calls and then at about 20 pages the sound gets louder and becomes a solid sound of that same duck call frequency (if that is the right word). It's loud and it lasts about 15 seconds. Then it goes away and at about 55 sheets printed it gets sold and very very loud and disturbing again and goes back to fast duck call that sometimes gets louder. I print a lot of jobs about 100 pages, mostly tax returns. Yesterday some sheets (49 to 58) came out very light to blank and then got darger again.

    Any Ideas?



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I had the same problem with the loud grinding sound. The gears on the cartridge(s) is not turning but rather stripping creating a grinding sound. Reinstall all of the toner cartridges. If that doesn't work, pull each cartridge out and manually turn the gear on the cartridge. If the problem persists, you may need to purchase a new toner cartridge.

Posted on Aug 18, 2008


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