Brother S-7250A Instruction Manual page 85

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 Error communicating with panel
(Main internal P.C. board -> panel P.C. board)
Panel connection cannot be confirmed.
Communication error with panel occurred when
E410
power was turned on.
E420 USB media recognition error.
Error when reading from USB media.
E422
Insufficient free space in USB media.
E424
E425 Error when writing to USB media.
Data could not be written to the backup memory
E440
(main internal P.C. board).
E441 Data could not be read from the backup memory
(main internal P.C. board).
Back up memory (main internal P.C. board) data
E442
was abnormal, so settings were initialized.
Model settings could not be read from machine
E450
head memory (internal panel).
Data backup cannot be written to machine head
E451
memory (internal panel).
P.C. board-related errors
Code
E700 Abnormal rise in power supply voltage was
detected when power was turned on.
Abnormal rise in sewing machine motor power
E701
supply voltage was detected.
Abnormal drop in power supply voltage was
E705
detected.
Power supply signal could not be detected when
E709
power was turned on.
E710 Abnormal sewing machine motor current was
detected.
Abnormal feed motor current was detected.
E711
Problem detected with fan signal.
E740
Abnormal solenoid mechanism current detected
E791
when solenoid was activated.
Cause
Cause
Cause
S-7250A
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 P3.
・ 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 P3.
・Turn off the power and check the sewing conditions.
・Turn off the power and check the connection of
connector P3.
Remedy
Turn off the power and check the connection of
connector P2.
Turn off the power and check the connection of
connector P2.
Check that USB media is correctly inserted.
・Press the Enter key.
・Check the data in the USB media.
・Press the Enter key.
・Increase the amount of free space in the USB media.
・Press the Enter 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.
Remedy
Turn off the power and check the power supply
voltage.
・Turn off the power and check the power supply
voltage.
・Turn off the power and check the connection of
connector P8.
Turn off the power and check the power supply
voltage.
Turn the power off and then back on again.
Turn off the power and check the connection of
connector P4.
Turn off the power and check the connection of
connector P3.
・Turn off the power and check the connection of
connector P6.
・Check that there are no foreign objects caught in the
fan.
Turn off the power and check the connection of
connector P1.
7. TROUBLESHOOTING
76