Question about Brother MFC-8440 All-In-One Laser Printer

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Doc cover open

Is there a sensor on the cover? the cover in my mfc-8440 displey doc cover open but its close.

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Yes there is and I know your problem have a look at the left hinge on lid that you lift to put down an original for copying, it will be breaking apart, the switch is black in that same corner on doc feeder base, as the hinge breaks apart the doc feed lifts in that corner causing "doc cover open" cause that switch no longer gets pushed in when lid is shut

Dodgy repair - tape switch closed, but doc feeder will not work properly/can use glass.

Repair - Easy removal of three screws and replacing 20buck hinge bought from brother dealer...part no.LE8731001 Hinge assy left.

Now that's FIXYA!

Posted on Nov 19, 2007


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1 Answer

Just installed a new drum unit in my Brother DCP1000, and it's still reading "Replace Drum soon"

this stands for brother mfc-8440 as in the title.
you need to reset the "drum counter" of your printer..
to do so try one of those

Brother Laser Printers:

After replacing the drum unit, keep the front cover open (make sure the power is on). Press and hold the "GO" button until all four LED's are lit. Once the four LED's light up, close the front cover. Make sure the drum LED is off. The counter is reset!

Brother Fax Machines:

Open the front cover. Press the CLEAR/BACK button. Press 1, when the display shows accepted.

Sep 19, 2011 | Brother MFC-8440 All-In-One Laser Printer


Doc feeder Nogo/ Doc cover open?

If you can use the glass and can print, but you cant fax or use doc feeder, then have a look at Left hinge it will be cracked, If you push down on left corner you should be able to use doc feeder when in that position

Here is part that breaks on every machine.

Here is link to purchase one for $25 bucks, three screws and job done, easy fix!

on Dec 24, 2007 | Brother MFC-8440 All-In-One Laser Printer

1 Answer

Brother MFC 6490 CW--have an error message "unable to print 6F" what does that mean and how do I fix it

This indicates one of 4 problems. They are in this order from easiest to most difficult.

1 Malfunction caused by overload (unplug the power cord and wait 5 seconds then plug back in.
Open and close the scanner cover.

2. ASF encoder sensor defective (Replace ASF motor assy)

3. ASF Motor defective (Replace ASF Motor assy.)

4. Main PCB Defective (Replace Main PCB)

If this is any problem other than 1 above you will need an authorized service center.

Good Luck

Mar 26, 2011 | Brother MFC-8440 All-In-One Laser Printer

1 Answer

How do i reset the drum on the brother mfc 8440

Open Toner front cover.

Press Clear.

Press 1 when the display shows REPLACE DRUM? 1.YES 2.NO

Jan 22, 2010 | Brother MFC-8440 All-In-One Laser Printer

1 Answer

Brother mfc-8440 printer/fax

you need to buy the left cover hinge, how ever so that you can use the machine, by the cover there is a sensor button, tape it down and you can still use the adf

Nov 13, 2008 | Brother MFC-8440 All-In-One Laser Printer

2 Answers

'Doc Cover open' error message

look for switch where the doc door closes and insert a piece of paper to trigger it, message should clear, adjust switch.

Aug 21, 2008 | Brother MFC 8440 All-In-One Laser Printer

1 Answer

Platten hinge broken

Those hinges have been updated by Brother. You need to go to Brother's website and find a local service center.

Jun 17, 2008 | Brother MFC-8440 All-In-One Laser Printer

2 Answers

Error mesage

No solution, but I have the same problem. THe printer starts up fine, I hear no grinding noises or other "funny" nioses, and then displays no error message... UNTIL I ask it to print. Then I get a message that says, "Pls (please) Open Cover".

I open the cover and it says "Please Close Cover".

I close the cover and it says, "Please Open Cover"

and this happens forever!

Does anyone have any ideas? Can anyone help me?


Mar 05, 2008 | Brother MFC-8440 All-In-One Laser Printer

1 Answer

Changed drum

try this
replace the old drum with the new replacement.
with the front door open press the Clear/Back button
press the number 1 button and when ?accepted? appears on the LCD4.gif close the front cover.

hope this helps
thanks for rating

Jan 09, 2008 | Brother MFC-8440 All-In-One Laser Printer

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