Question about Brother PE770 Computerized Sewing Machine

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Brother pe-770 f05 speed sensor error - How to fix?

Starts stitching perfectly, then starts beeping and reads"F05 speed sensor" as the error; the beeping will not stop and nothing can be done unless the machine is completely shut down. Then after starting up again, it stitches perfectly for a minute and does the same thing. I can't find any info on this error - what is it and how is it fixed?

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  • Lydia kikomeko May 28, 2018

    Hullo my Embroidery machine brother se425 still won't work even after servicin to rectify the speed sensor my mechanic thinks I need a new he right and where canni get that.iam stressed



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F05 error, speed sensor. I fixed successfully 2 of those. Speed sensor is located on a small board, under a protective plastic, located over the main front board. Remove front panel and bobin winder assembly. Remove the 2 screws of the small board. Remve CAREFULLY the small bord. Under, on the main shaft, are located the needle positionning sensors and the wheel of the speed sensor (left wheel on the shaft). The speed sensor is located on the board itself, it's very small. Clean carefully both the wheel and the sensor with Q-Tips and alchool, reassemble the whole thing and it should restart.
While U are there, take a thin nozzle oiler and lubrificate all the suppots of upper and lower shaft, all the needle bar mechanism and rotary hook central shaft and gears WITH VERY THICK oil. Needle bas assembly is the most critical point. I have 14 of those machines, almost all of those seized there before I learn how to lubrificate it. Also seized on the bottom shaft and on rotary hook pin

Posted on Jul 05, 2012

  • Bbbb Jul 06, 2012

    Thank you!!!!

  • Anonymous Oct 28, 2017

    Thank you.I did not need to remove the bobbin assy. and still could get at the board.


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Hello, i've got the same problem with my embroidery machine innovis 955 .. pls, help ! :(

Posted on Nov 18, 2017


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Posted on Jan 02, 2017

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SOURCE: stitching loose. won't thread the fabric

try to rethread the machine all the way back to the spool of thread and check the top and bottom tensions on scrap of same fabric

Posted on Dec 13, 2009

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SOURCE: Brother XL--2600 Sewing Machine not picking up Stitches at all!

Take the thread out, Take the needle plate out Watch as the needle comes comes down, make sure the hook is just above the eye of the the needle as it makes its pass by the scarf of the needle if not refer to my post on timing.

Posted on Jun 02, 2010

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1 Answer

My brother sewing machine LB 6800 is showing FO5 speed sensor error what can I do to fix it

You may need to get the sewing machine serviced; the repair must be handled as if you are fixing a computer. The F05/F5 error indicates a problem with the timing shutter, the PCB board or the wiring between them.

If you are going to try this, first unplug the machine and check the wiring. Next clean the timing shutter if the wiring is undamaged. Replace the timing shutter if the error recurs. If the machine still gives the F05 error, the PCB board has to be replaced.

Some of the parts for the Brother LB6800 are here:

I hope this helps.

Cindy Wells

Sep 29, 2018 | Brother Sewing Machines

1 Answer

My Brother PE-770 presser foot Q has started making a clacking noise. If I press in on the lever on the back of the foot, the clacking stops. What is causing this loud noise and how do it fix it?

Sounds like something in the machine in the head that makes it go up and down. either wear or something loose. I would have it checked by a Brothers repair shop

Jan 10, 2015 | Brother PE-770 Embroidery Machine

1 Answer

F05 speed sensor

Make & Model ??

Feb 28, 2014 | Sewing Machines

1 Answer

How to oil brother PE 770

Brother says it should not be oiled but having 14 of those, I know that it has to be done but a Brother technician will not do that. OILING the machine may cause F05 speed sensor error. See how to solve it under this label.

U need to remove the complete front plastic panel. 3 screws on the top (2 lower the handles, 1 at upper right. Remove 1 screw at the center bottom of the rear panel. Remove both left top/ bottom panels (1 screw each) then the horizontal bottom left panle (2 screws). All the balance is fixed with clips.

First undo the 2 clips under the machine than carefully unclip everywhere. Front panel have 2 wire assembly attached to main board. Regular one is easy to remove. To remove the flat one, send down the upper part of the attchment on the main board.

Don't use reg. thin white sewing machine oil, it evaporate. Use SAE 80 (differentail type) oil or something like taht. Lubrificate all 4 lower shaft supports, rotary hook gears and central pin (from the top, under the bobbin case). Then lubrificate all the upper shaf support and especially all the needle bar mechanism. U need a good light to see upper needle bar support. Lower needle bar support support is the most critical point.

Apr 23, 2012 | Brother PE770 Computerized Sewing Machine

3 Answers

I have a Brother PE 770. All was well, fairly new machine and whipped stitches out correctly. All of a sudden it is shredding the top thread and it almost seems the bobbin is not catching. Would this be...

here are some suggestions to try
it's may be the needle, it could be bent or blunt

it is possible that it could be the timing,,,, but first try changing the needle & try rethreading the
machine the top thread & bobbin also

make sure the bobbin is in the bobbin case correctly & that the bobbin case is correctly inserted into the machine correctly

check to see if there are any burrs on the needle plate
clean out from under the needle plate
also make sure the bobbin area is clean from lint or loose threads

Oct 18, 2010 | Brother PE770 Computerized Sewing Machine

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