URGENT! LB 6800 brother embroidery machine has F05 speed sensor error! Please help.

SOURCE: Brother 8200/8500 Upgrade -- opening machine and replacing motherboard

hi, to open the pc-8200 first you need remove the right cover these have 1 screw under a plastic cap.
now you remove the 2 plastic cover in the left side upper and low these are onlu a screw in the back an remove pull to the left side.

Next remove the plastic cover where rest the embroidery these have two screw, you can see easy...

at this time you have only the front & rear cover, this have a hiden screw and lot of presure grapes.

if you need more help sendme a email [email protected]

SOURCE: Bobbin Case

ok Sim this is a bit tricky but not to tricky first turn the handwheel toward you until the hook is at one o clock postion then slide the case without the bobbin in into the hook area you may have to work the handwheel back and forth alittle but it should slide in just remember that the case should ride in the rim. also take the needle out first that way you wont get stuck trust me it happiens.

SOURCE: Error message on Brother SE-270D sewing machine

The safety device will activate if the machine has a bind or is unable to run at correct speed. If you turn the handwheel is it tight/hard to turn? if it is than thats it. Now what is binding the machine has to be diagnosed.

SOURCE: Thread Breaking On Brother Sewing Machine

if thread is good quality you may have a sharp groove in your needle plate hole from needle breakage. if so, polish with emery tape.

scott

SOURCE: cotton breaks on Brother Embroidery Galaxie 2100 machine

Try turning down your top tension setting a bit. If its at 4 or 5, i would turn it down to about 3 ish. Cotton thread is more brittle than polyester and rayon thread.

Hope that helps :)
Chris