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7. Error E050
7-1) The switch contact point is
1-A) Connector connection defective
Check CN69 of INT board.
Temporary stop switch
open.
1-B) Switch defective or disconnection
Confirm the condition of the switch by using the tester.
(Normal closure)
8. Error E220
8-1) The number of stitches saved
1-A) 100 million stitches have
After grease supplement, clear the memory with the
Grease up alarm
in the INT board has exceeded
been exceeded.
memory switch U245.
100 million stitches.
9. Error E221
9-1) The number of stitches saved
1-A) 120 million stitches have
After grease supplement, clear the memory with the
Grease up error
in the INT board has exceeded
been exceeded.
memory switch U245.
120 million stitches.
10. Error E302
10-1)Detector switch contact open
1-A) Connector contact is defective.
Check CN67 of INT board.
Head tilt error
1-B) Disconnection
Check it by means of a circuit tester.
Replace the switch.
1-C) Switch is defective.
Check it by means of a circuit tester.
Replace the switch.
1-D) Switch fails to properly work.
Check the switch mounting conditions.
11. Error E303
11-1)Phase Z signal (upper shaft
1-A) The encoder cord is broken
Confirm whether each signal is delivered to CN14
Upper shaft motor Phase Z
motor) is not received.
or the motor encoder circuit
of the SDC board.
sensor error
is out of order.
CN14_9: Phase Z
LED3 on SDC board:
CN14_2: GND
Flashing 2 times
Replace the motor if there is no signal change as a
result of manual turning.
1-B) The detector circuit is out of
Replace the SDC board.
order.
12. Error E305
12-1)Presser lifter/thread trimmer
1-A) The cam phase of the mechanical
Check the operation with the check program I_07.
Thread trimmer knife position
pulse motor fails to properly
block is not in good order.
error
work.
1-B) The driver circuit is out of order.
Replace the MAIN board.
1-C) Motor defective
Measure the resistance of the motor winding by means
of a circuit tester.
12-2)The sensor is not turned
2-A) Sensor defective/Mounting
Check the sensor with the check program I_03.
ON.
inadequate
2-B) Disconnection of connector
Check CN66 of INT board.
Trouble
Cause (1)
Cause (2)
Check and corrective measures