8. TROUBLESHOOTING

 

 

 

 

 

 

 

 

 

 

 

Error code

Possible cause

Page

 

 

E150

This is displayed when the motor becomes abnormally hot and the temperature

 

 

 

protection has activated.

 

 

 

Motor is

 

After the temperature has dropped, turn on the power switch and operate the

 

 

 

overheating.

sewing machine as normal.

 

 

 

 

 

 

 

 

 

E151

The connection of the 10-pin resolver connector at the control box is faulty.

 

 

 

Turn off the power switch, and then check the connection of the 10-pin resolver

 

 

 

Problem with

connector.

 

 

 

motor

 

Problem with motor or main PCB.

 

 

 

overheating

Replace the motor or the control box.

**

 

 

sensor.

 

 

 

 

 

 

 

 

 

 

E161

This is displayed when a motor overload operation has occurred.

 

 

 

Turn off the power switch, and then turn the pulley by hand and check that it

 

 

 

Motor

overload

turns easily.

 

 

 

protection

Problem with motor.

 

 

 

 

 

Replace the motor.

 

 

 

 

 

 

 

 

 

E190

This appears on the display when the sewing machine has been operating

 

 

 

continuously for 3 minutes or more.

 

 

 

Motor timeout.

Turn the power switch off and then back on again, and then operate the sewing

 

 

 

 

 

machine normally.

 

 

 

 

 

 

 

 

 

E191

This is displayed if the sewing machine motor locks during thread trimming.

 

 

 

Remove any thread scraps that may be blocking the motor.

*

 

 

Thread

trimming

Check that there are no problems with the thread trimming mechanism.

**

 

 

solenoid timeout.

 

 

 

 

 

 

 

 

 

 

E410

Is the 8-pin operation panel connector at the control box disconnected?

 

 

 

Turn off the power switch, and then check the connection of the 8-pin operation

 

 

 

Error

 

panel connector.

7*

 

 

communicating

 

 

 

 

with operation

 

 

 

 

panel.

 

 

 

 

 

E440

Problem with main PCB.

 

 

 

Replace the control box.

**

 

 

Error writing data

 

 

 

 

 

 

 

to main PCB.

 

 

 

 

 

 

 

 

 

 

E441

Problem with main PCB.

 

 

 

Replace the control box.

**

 

 

Error reading data

 

 

 

 

 

 

 

from main PCB.

 

 

 

 

 

 

 

 

 

E442

Turn the power off and then back on again.

 

 

 

 

 

The data on the main PCB is corrupted. Corrupt data was initalized.

 

 

 

Problem with data

 

 

 

 

on main PCB.

 

 

 

 

E451

Data could not be correctly written to the panel when adjusting the needle up stop

 

 

 

position.

 

 

 

Error writing data

Repeat the write operation.

 

 

 

to head detector

Alternatively, turn the power off and then back on again to reset the machine.

 

 

 

unit.

 

 

 

 

S-7000DD

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