Brother GTX-4, Service Manual

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Error code list
Error Error message Description Remedy
6221 [Machine Error]
The white heads' temperature
level is abnormal.
Items to be checked:
(1) Check the connection of the head connector.
(2) After making the color/white head connection
crossed, reactivate the device and replace the
head if the error 6220 appears.
Electric components as candidate for replacement:
Carriage circuit board and Main circuit board
6230 [Machine Error]
It refers to abnormal voltage
in the color heads.
Items to be checked:
(1) Check the connection of the head connector.
(2) Clean the carriage surroundings, carriage belt,
pulley, and encoder strip.
(3) After making the color/white head connection
crossed, reactivate the device and replace the
head if the error 6231 appears.
Electric components as candidate for replacement:
Carriage circuit board and Main circuit board
6231 [Machine Error]
It refers to abnormal voltage
in the white heads.
Items to be checked:
(1) Check the connection of the head connector.
(2) Clean the carriage surroundings, carriage belt,
pulley, and encoder strip.
(3) After making the color/white head connection
crossed, reactivate the device and replace the
head if the error 6230 appears.
Electric components as candidate for replacement:
Carriage circuit board and Main circuit board
6240 [Machine Error]
It refers to FFC failure in the
color heads.
Items to be checked:
(1) Check the connection of the head connector.
(2) Clean the carriage surroundings, carriage belt,
pulley, and encoder strip.
(3) After making the color/white head connection
crossed, reactivate the device and replace the
head if the error 6241 appears.
Electric components as candidate for replacement:
Carriage circuit board and Main circuit board
6241 [Machine Error]
It refers to FFC failure in the
white heads.
Items to be checked:
(1) Check the connection of the head connector.
(2) Clean the carriage surroundings, carriage belt,
pulley, and encoder strip.
(3) After making the color/white head connection
crossed, reactivate the device and replace the
head if the error 6240 appears.
Electric components as candidate for replacement:
Carriage circuit board and Main circuit board