Brother S-7300A Service Manual page 194

11. TROUBLESHOOTING
Code
E190
Sewing machine motor was running continuously
for too long during sewing.
E191
Thread trimming solenoid operation was not
completed within the specified period.
Feed mechanism-related errors
Code
E210
Feed motor origin is not detected when power is
turned on.
E211
Abnormal feed motor operation detected during
sewing.
E251
Abnormal feed motor overheating detected or feed
motor overheating sensor was not detected.
Communication and memory-related errors
Code
E400
Panel connection was not detected when power
was turned on.
E410
Communication error with panel occurred when
power was turned on.
E422
Error when reading from USB media.
E424
Insufficient free space in USB media.
E425
Error when writing to USB media.
E440
Data could not be written to the backup memory
(main internal P.C. board).
E441
Data could not be read from the backup memory
(main internal P.C. board).
E442
Back up memory (main internal P.C. board) data
was abnormal, so settings were initialized.
E450
Model settings could not be read from machine
head memory (internal panel).
E451
Data backup cannot be written to machine head
memory (internal panel).
183
Cause
Cause
Cause
S-7300A
Remedy
Turn the power off and then back on again.
Turn off power and check if the thread trimming
mechanism is stiff.
Remedy
・ Turn off the power and check that the feed
mechanism is not abnormal.
・ Turn off the power and check the feed motor
connector and connector P4.
・ Turn off the power and check that the feed
mechanism is not abnormal.
・ Turn off the power and check the feed motor
connector and connector P4.
・Turn off the power and check the sewing conditions.
・Turn off the power and check the connection of
connector P4.
Remedy
Turn off the power and check the connection of
connector P2.
Turn off the power and check the connection of
connector P2.
・Press the Reset key.
・Check the data in the USB media.
・Press the Reset key.
・Increase the amount of free space in the USB
media.
・Press the Reset key.
・Use the specified USB media.
Turn the power off and then back on again.
Turn the power off and then back on again.
Turn the power off and then back on again.
Turn the power off and then back on again.
Turn the power off and then back on again.