Brother LK3-B438E MKII Instruction Manual page 56

Code
Home position cannot be detected
E-A0 (malfunction of home position sensor), or
malfunction of power supply circuit board.
You tried to change the program number
E-b0
when DIP switch A-8 was set to ON.
Heat sink of control circuit board is
E-d0
abnormally hot.
Malfunction of EEPROM (malfunction of
E-E0
main circuit board).
Corrupted EEPROM data, or main PROM
E-E1
version has been upgraded.
Corrupted EEPROM control information
E-E2
data.
Solenoid short-circuit (malfunction of
main circuit board), or power relay is not
E-F0
operating (malfunction of power supply
circuit board).
Bad connection in cable between power
E-F1 supply circuit board and main circuit
board.
Abnormal current detected in power
E-F2
supply circuit board.
Errors generated when optional equipment is connected
Code
E-10 Emergency stop switch was pressed.
Emergency stop switch was pressed
E-11
during sewing.
Emergency stop switch is being
continually pressed, or emergency switch
E-12
connection error.
E-14 Thread breakage detected.
REFERENCE segment LED alphabet
Panel display
Text display
Cause
Cause
A b c
LK3-B438E Mark II
Remedy
Turn off the power and check the connection of
home position sensor connector P1.
Press the RESET switch.
Set DIP switch A-8 to OFF before trying to change
the program number.
Turn off the power and clean the air intake port of
the box.
Turn off the power, and turn it back on. If the error
continually occurs, contact a qualified service
technician.
Press the RESET switch to reset the error. However,
the data (memory switches, display and user
programs) will be reset to the backup data or
initialized.
Press the RESET switch to reset the error. However,
the data (memory switches, display and user
programs) will all be initialized.
Turn off the power and contact a qualified service
technician.
Turn off the power and check if connectors P16 is
disconnected.
Turn off the power and contact a qualified service
technician.
Remedy
Turn the EMERGENCY STOP switch clockwise to
release the lock, and then press the RESET switch
to reset the error.
Turn the EMERGENCY STOP switch clockwise to
release the lock, and then press the RESET switch
to reset the error. You can then press the STEP
BACK switch to repeat the sewing.
Turn off the power and check.
Turn the EMERGENCY STOP switch clockwise to
release the lock, and then press the RESET switch
to reset the error. You can then press the STEP
BACK switch to repeat the sewing.
d E F
14. TABLE OF ERROR CODES
6 H L o
50