Monday, June 06, 2016

Brother Sewing machine - Brother S-7200A – How to initialize the sewing machine – Sewing machine error codes causes and solution - Home appliances repair and service

Category: Home Appliances Repair and Service 

Contents of this article 

  • How to initialize the swing machine
  • Error codes 
  • Error code causes and solution 

Brother S-7200A

Clearing saved data (Initialization)
Types of data that are cleared
When saved data is cleared, the following data are returned to factory default settings.
All data that has been set using the operation panel (including function setting data)
Initializing all data
1. While pressing the RESET key on the operation panel, turn on the power switch.
The main display will change to orange and "iniT ALL" will be displayed.
2. Press the ENTER key.
Initialization will be carried out and the "iniT ALL" display will change to green.
3. After this, the operation panel and the treadle can be operated. When an operation is carried out, the display will return to the normal display.
Initializing only speed data
1. While pressing the MAX key on the operation panel, turn on the power switch.
The main display will change to orange and "iniT rPM" will be displayed.
2. Press the ENTER key.
The speed data will be initialized to the speed data from the head detector unit and the "iniT rPM" display will change to green.
3. After this, the operation panel and the treadle can be operated. When an operation is carried out, the display will return to the normal display.
Initializing only the function setting data
1. While pressing the FUNC key on the operation panel, turn on the power switch.
The main display will change to orange and "iniT FUnC" will be displayed.
2. Press the ENTER key.
Initialization of the function setting data will be carried out and the "iniT FUnC" display will change to green.
3. After this, the operation panel and the treadle can be operated. When an operation is carried out, the display will return to the normal display.
Clearing data automatically
When the power is turned on for the first time, the treadle and the operation panel cannot be operated for a period of approximately 4 seconds.
After approximately 4 seconds, the main display will change to green and "init rPM" will be displayed. "iniT rPM" means that the sewing machine's speed settings have been initialized.
In addition, this display will also appear in the following cases approximately 4 seconds after the power has been turned on.
When the control box has been replaced.
When a sewing machine with different speed specifications to the control box is connected
NOTE:
When the power switch is turned on, any of the sewing machine's sewing speeds that are different from the setting data in the head detector unit are reset automatically.
When initialization is complete, the main display will change to green and "init rPM" will be displayed.
After this, the operation panel and the treadle can be operated. When an operation is carried out, the display will return to the normal display.
Error codes Cause and solution 
Err 1
Is the power supply voltage abnormally high? Check the voltage.
Problem with control box. Replace the control box.
Err 2
Is connector CN7 or CN8 inside the control box disconnected?
Insert the connector securely.
Err 3
Is connector CN4 inside the control box disconnected?
Insert the connector securely.
Err 4
Is the motor connector disconnected from the control box?
Insert the connector securely.
Has the machine locked up?
Turn off the power and then turn the machine pulley by hand and check that it turns easily.
Err 5
Is connector CN13 inside the control box disconnected?
Insert the connector securely.
Is the machine head tilted back?
Return the machine head to its normal position.
Check the operation of the safety switch.
Err 6
Is the power supply voltage too low?
Check the power supply voltage.
Was the power turned on while the treadle was still depressed?
Return the treadle to the neutral position, and then turn on the power switch.
Err 7
This is displayed when there is a problem in communication with the operation panel CPU.
Is connector CN5 inside the control box disconnected?
Insert the connector securely.
Problem with operation panel or control box.
Replace the operation panel or control box.
Err 8
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.
Err 9
This is displayed when the motor is abnormally overheated and temperature protection has been activated.
After the temperature cools down, turn the power switch back on and continue normal operation.
Problem with motor.
Replace the motor.
Err 10
This is displayed when abnormal current is flowing in a solenoid (thread trimming, thread wiping, quick reverse or presser foot lifter).
Check the resistances of each solenoid.
Problem with control circuit board.
Replace the control box.
Err 12
Is the solenoid fuse F2 (5 A) blown?
Replace the fuse.
Problem with control circuit board.
Replace the control box.
Err 13
Is connector CN2 inside the control box disconnected?
Insert the connector securely.
Is there a broken wire in the treadle connector cord?
Replace the treadle unit.
Err 14
Problem with head detector unit
Check that connector CN18 inside the control box is securely connected.
Replace the head detector unit.
Err 15
Problem with motor.
Replace the motor.
Problem with motor driver.
Replace the control box.
Err 16
This is displayed when the sewing machine motor locks during thread trimming.
Remove any thread that is tangled.
Check that there are no problems with the thread trimming mechanism.
Err 18
This is displayed when data could not be written correctly into the memory element of the control circuit board.
Replace the control box.
Err 19
This is displayed when the control box is abnormally warm.
(3-phase specifications only)
Check that there is no problem with the cooling fan.
If there is a problem, replace the cooling fan.
Err 20
Has the setting for standard depression strokes been set correctly?
Repeat the setting for standard depression strokes.
Treadle unit malfunction.
Replace the treadle unit.
Err 21
Is connector CN16 inside the control box disconnected?
Insert the connector securely.
Err 100
(GrEASEUP)

This appears on the display when the sewing machine has continued to be used for a certain period after the “GREASEUP” notification appears without the grease being applied (without the reset procedure being carried out).
Apply grease and then carry out the reset procedure.
Err 101
(diP SW 4)
Is DIP switch No.4 inside the control box set to ON?
Set DIP switch No.4 to OFF.