Brother S-7000DD Instruction Manual page 50

8. TROUBLESHOOTING
Error code
E701
・ Does the power supply voltage match the control box voltage specifications?
Abnormally high
power supply
voltage.
・ Is the power supply voltage abnormally high?
・ Problem with control box.
E705
・ Is the power supply voltage abnormally low?
Abnormally low
power supply
voltage.
・ Problem with control box.
E710
・ Is the electrical equipment connector inside the control box disconnected?
Motor
overcurrent.
・ This is displayed if the machine pulley moves stiffly when it is turned by hand, or if
the sewing machine locks up and an abnormal current is flowing.
・ This is displayed if there is some problem with the motor and an abnormal current is
flowing.
・ Problem with control box.
NOTE:
E790 ・ This is displayed when there is no power for solenoid, or if the power level is
abnormally low.
Problem with
solenoid power
・ Problem with main P.C. board or transformer.
supply
E791
・ This is displayed when there is overcurrent in any of the solenoids (thread trimming,
thread wiping, quick reverse or presser lifter).
Solenoid
overcurrent.
・ Problem with main PCB.
If an error code that is not listed above appears or if carrying out the specified remedy does not solve
the problem, contact the place of purchase.
41
Check that the voltage matches.
Check the connection of the 5-pin transformer connector inside the control box.
(220 V AC: P12, 230 V AC: P13)
Check the power supply voltage.
Replace the control box.
Check the power supply voltage.
Check the connection of the 5-pin transformer connector inside the control box.
(220 V AC: P12, 230 V AC: P13)
Replace the control box.
Turn off the power switch and then turn the machine pulley by hand and check
that it turns easily.
Turn off the power switch and then turn the machine pulley by hand and check
that it turns easily.
Replace the motor.
Replace the control box.
When the power supply voltage is abnormally low, E710 may be displayed
instead of E705.
Check the connection of the 2-pin transformer connector inside the control box.
Replace the control box.
Check the resistances of the solenoids.
Replace the control box.
Possible cause
S-7000DD
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