Brother International T-8752C Instruction Manual - English - Page 91

connector is connected to connector P7 on the main PCB., Error writing data

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14. TROUBLESHOOTING Error code E150 Motor is overheating. Possible cause ・ This is displayed when the motor becomes abnormally hot and the temperature protection has activated. After the temperature has dropped, press the power ON switch and operate the sewing machine as normal. E151 Problem with motor overheating sensor. E190 Motor timeout. ・ Is the connector inside the motor disconnected? Insert the connector securely. ・ Malfunction of motor overheating sensor Replace the motor. ・ This appears on the display when the sewing machine has been operating continuously for 3 minutes or more. Turn the power switch off and then back on again, and then operate the sewing machine normally. E191 Thread trimming solenoid timeout. ・ This is displayed if the sewing machine motor locks during thread trimming. Remove any thread scraps that may be blocking the motor. Check that there are no problems with the thread trimming mechanism. E410 Error communicating with operation panel. ・ Is the 12-pin operation panel connector inside the control box disconnected? Press the power OFF switch, and then check that the 12-pin operation panel connector is connected to connector P7 on the main PCB. E440 Error writing data to main PCB. ・ Problem with main PCB. Replace the control box. E441 Error reading data from main PCB. ・ Problem with main PCB. Replace the control box. E442 Problem with data on main PCB. E450 ・ The data on the main PCB is corrupted. Corrupt data was initalized. Turn the power off and then back on again. ・ Model selection could not be loaded from the head detector unit. Check that the head detector unit specifications are correct. Page ** ** * ** 12* ** ** * E451 ・ Problem with head detector unit. Replace the head detector unit. Error writing data ** to head detector unit. E452 ・ Is the 6-pin head detector unit connector inside the control box disconnected? Press the power OFF switch, and then check that the 6-pin head detector unit Head detector unit connector is connected to connector P8 on the main PCB. 12* connection error. T-8421C, 8422C, 8452C, 8722C, 8752C 82

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T-8421C, 8422C, 8452C, 8722C, 8752C
14. TROUBLESHOOTING
82
Error code
Possible cause
Page
E150
Motor is
overheating.
・
This is displayed when the motor becomes abnormally hot and the temperature
protection has activated.
After the temperature has dropped, press the power ON switch and operate the
sewing machine as normal.
E151
Problem with
motor
overheating
sensor.
・
Is the connector inside the motor disconnected?
Insert the connector securely.
・
Malfunction of motor overheating sensor
Replace the motor.
**
**
E190
Motor timeout.
・
This appears on the display when the sewing machine has been operating
continuously for 3 minutes or more.
Turn the power switch off and then back on again, and then operate the sewing
machine normally.
E191
Thread trimming
solenoid timeout.
・
This is displayed if the sewing machine motor locks during thread trimming.
Remove any thread scraps that may be blocking the motor.
Check that there are no problems with the thread trimming mechanism.
*
**
E410
Error
communicating
with operation
panel.
・
Is the 12-pin operation panel connector inside the control box disconnected?
Press the power OFF switch, and then check that the 12-pin operation panel
connector is connected to connector P7 on the main PCB.
12*
E440
Error writing data
to main PCB.
・
Problem with main PCB.
Replace the control box.
**
E441
Error reading data
from main PCB.
・
Problem with main PCB.
Replace the control box.
**
E442
Problem with data
on main PCB.
・
The data on the main PCB is corrupted. Corrupt data was initalized.
Turn the power off and then back on again.
E450
・
Model selection could not be loaded from the head detector unit.
Check that the head detector unit specifications are correct.
*
E451
Error writing data
to head detector
unit.
・
Problem with head detector unit.
Replace the head detector unit.
**
E452
Head detector unit
connection error.
・
Is the 6-pin head detector unit connector inside the control box disconnected?
Press the power OFF switch, and then check that the 6-pin head detector unit
connector is connected to connector P8 on the main PCB.
12*