S-7200B
13. TROUBLESHOOTING
70
Error code
Possible cause
Page
Err 5
(Safety switch
operated)
Is the machine connector 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.
52
25
Err 6
(Voltage drop)
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.
Is the power supply voltage too low?
Check the power supply voltage.
54
Err 7
(Panel
communication
error)
This is displayed when there is a problem communicating with the operation panel
CPU.
Is the operation panel connector inside the control box disconnected?
Insert the connector securely.
Problem with operation panel or control box.
Replace the operation panel or control box.
52
49
Err 8
(Over time)
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
(Motor
overheating
abnormally)
This is displayed when the motor becomes abnormally hot and the temperature
protection has activated.
After the temperature has dropped, turn the power switch back on and operate
the sewing machine as normal.
Problem with motor.
Replace the motor.
39
Err 10
(Solenoid
overcurrent)
This is displayed when there is overcurrent in any of the solenoids (thread trimming,
thread wiping, quick reverse or presser lifter).
Check the resistances of the solenoids.
Problem with control P.C. board.
Replace the control box.
55
49
Err 11
(Problem with
motor over-
heating sensor)
Is connector CN5 inside the motor disconnected?
Insert the connector securely.
3157M
3154M
3116M
Содержание MD-741B
Страница 58: ...S 7200B 10 CONTROL BOX AND MOTOR 51 Motor Serial No 2326M 2327M ...
Страница 82: ...S 7200B MEMO 75 ...
Страница 83: ...S 7200B MEMO 76 ...
Страница 84: ...SERVICE MANUAL S 7200B I6100914B 2007 03 B 1 Printed in Japan ...