Brother 884-T20 Operation Manual page 228

Machine failed to communicate with
the PC in the Link mode.
Turn off the machine, and on again.
The machine is retrieving a previously
saved pattern.
The combined character pattern is too
large to fit in the extra-large
embroidery frame.
Change the character pattern
combination.
226
The thread trimming button was
pressed before the machine was
unlocked.
Touch to use the thread
trimming function.
The machine was stopped while the
needle bar case was moving.
Touch to automatically reset the
needle bar case.
The motor has locked up due to tangled
thread or for other reasons related to
thread delivery.
If the thread is entangled in the bobbin
case, clean the race, and then oil it.
(Refer to page 212 and 216.)
The machine needs maintenance.
(Refer to page 216.)
The combined character pattern is too
large for the embroidery frame.
Rotate the pattern 90 degrees and then
continue combining characters.
The USB media is write-protected.
Cancel the write protection.