Error Codes - Brother Z-8550A Service Manual

15. ERROR CODES

Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outlet
before opening the cover of the control box. Touching areas where high voltages are present can result in severe
injury.
If a malfunction should occur with the sewing machine, a buzzer will sound and an error code will appear in the display
window.
Follow the remedy procedure to eliminate the cause of the problem.
<Switch-related errors>
Code
Tilted back sewing machine has been detected. Check the operation of the safety switch. Turn off the power
Err 50
before tilting back the machine head.
Operation panel key was being pressed or actuator switch was being pressed while the power was turned on,
Err 65
or malfunction of a key. Turn off the power switch and check.
Err 90 Poor connection of treadle unit cord. Turn off the power switch and check.
Err 91 Problem with standard setting of treadle stroke. Readjust the treadle stroke to the standard setting.
Treadle was being depressed when power was turned on. Turn off the power switch, set the treadle to the
Err 95
neutral position and then turn the power back on.
<Upper shaft motor-related errors>
Code
Err 100 Turn off the power and apply grease, and then carry out the reset operation.
Err 101 DIP switch No.4 inside the control box is set to ON. Turn off the power and set DIP switch No.4 to OFF.
Needle bar does not stop in the needle up position and thread wiper cannot operate. Check the needle bar
Err 111
position.
Sewing machine motor does not operate. Motor 4P connector is not connected correctly, sewing machine is
Err 130 locked, or malfunction of control devices. Turn off the power switch, and check the motor 4P connector or turn
the pulley and check if it turns stiffly.
Encoder connector (P13) of sewing machine motor is not connected correctly, or malfunction of encoder P.C.
Err 131 board.
Turn off the power switch and check.
Sewing machine motor is operating abnormally
Err 132
(P13) of sewing machine motor is not connected correctly. Turn off the power switch and check.
Sewing machine motor is overheating abnormally. Displayed when the temperature protection has been
Err 150
activated. After the temperature has dropped, turn the power back on.
Err 151 Temperature sensor of sewing machine motor is not connected correctly. Turn off the power switch and check.
Sewing machine motor has operated continuously for 3 minutes or more. Sewing machine motor overtime
Err 190
error. Turn off the power switch and then turn the power back on again.
Err 191 Thread trimmer solenoid overtime error. (Thread trimming was not completed.)
<Feed mechanism-related errors>
Code
Needle zigzag motor home position cannot be detected. Needle zigzag motor connector is not connected
Err 200 correctly to the needle zigzag encoder connector, or problem with needle zigzag motor. Turn off the power
switch and check.
Needle zigzag motor stopped due to a problem. Turn off the power switch, move the needle bar sideways and
Err 201
check that it does not move stiffly.
Err 202 Problem with needle zigzag motor home position adjustment data. Re-adjust the home position.
DANGER
Cause and remedy
Cause and remedy
.
Malfunction of encoder P.C. board, or encoder connector
Cause and remedy
Z-8550A, 8560A
15. ERROR CODES
114