Brother S-7300A Service Manual page 193

Switch-related errors
Code
E050
Machine head is detected as being tilted back when
start sewing.
E051
Machine head is detected as being tilted back
during sewing.
E055
Machine head is detected as being tilted back when
power was turned on.
E064
Touch key was being pressed when power was
turned on.
E065
A disabled hardware key was being pressed when
the power was turned on.
E066
Hand switch A was being pressed when power was
turned on.
E067
Hand switch B was being pressed when power was
turned on.
E068
Connection of hand switch A was not detected
when power was turned on.
E069
Connection of hand switch B was not detected
when power was turned on.
E090
Connection of treadle was not detected when
power was turned on.
E095
Treadle or standing operation pedal was being
pressed when power was turned on.
Sewing machine motor-related errors
Code
E100
Time for grease up.
E111
The needle up stop position exceeded the specified
value when the sewing machine motor stopped.
E112
The needle up or needle down stop position did not
reach the specified value when the sewing machine
motor stopped.
E113
The needle down stop position exceeded the
specified value when the sewing machine motor
stopped.
E130
Sewing machine motor did not operate at sewing
start or during sewing.
E131
Sewing machine motor encoder connection was not
detected when power was turned on.
E132
Abnormal sewing speed of sewing machine motor
was detected during sewing.
E140
Sewing machine motor ran in opposite direction to
the direction specified during sewing.
E150
Abnormal overheating detected in sewing machine
motor.
E151
Motor overheating sensor connection was not
detected.
E161
Sewing machine motor overload was detected
during sewing.
Cause
Cause
S-7300A
Remedy
・Turn off the power, and then return the machine
head to its original position.
・Turn off the power and check the connection of
connector P2.
Turn off the power and check the connection of
connector P2.
・Turn off the power, and then return the machine
head to its original position.
・Turn off the power and check the connection of
connector P2.
Turn the power off and then back on again.
* Do not press the touch keys when turning on the
power.
Turn the power off and then back on again.
* Do not press a disabled hardware key while turning
on the power.
Turn the power off and then back on again.
* Do not press hand switch A when turning on the
power.
Turn the power off and then back on again.
* Do not press hand switch B when turning on the
power.
Turn off the power and check the connection of
connector P3.
Turn off the power and check the connection of
connector P3.
Turn off the power and check the connection of
connector P6.
Return treadle unit or standing up operation pedal to
original portion.
* Do not press the treadle or the standing operation
pedal when turning on the power.
Remedy
Turn off the power, apply grease, and then clear the
grease up counter according to the method specified.
Turn off the power and check if the sewing machine
motor or thread trimming mechanism is stiff or not.
Turn off the power and check if the sewing machine
motor or thread trimming mechanism is stiff or not.
Turn off the power and check if the sewing machine
motor or thread trimming mechanism is stiff or not.
・Turn off the power and check if the sewing machine
motor is stiff or not.
・Turn off the power and check the connections of the
sewing machine motor connector and connector
P5.
Turn off the power and check the connection of
connector P5.
Turn off the power and check the connection of
connector P5.
Turn off the power and check the connection of
connector P5.
Turn off the power and check the sewing conditions.
Turn off the power and check the connection of
connector P5.
Turn off the power and check the sewing conditions.
11. TROUBLESHOOTING
182