Troubleshooting
338
Operating Instructions 755 B, 756 B/F - 00.0 - 02/2021
3022
Control: Voltage error 24V (I2T)
• Switch off and on the machine
again
• Check connections
• Replace control
3030
Sewing motor: Phase error
• Test sewing motor phases
(R=2.8 OHM, high impedance
to PE)
• Replace encoder
• Replace sewing motor
• Replace control
3040
Line voltage drop
Check mains voltage
3100
Control voltage:
Temporary line voltage drop
Check mains voltage
3101
Power voltage:
Temporary line voltage drop
Check mains voltage
3102
Voltage sewing motor:
Temporary line voltage drop
Check mains voltage
3103
Voltage stepper motors:
Temporary line voltage drop
Check mains voltage
3104
• Pedal not in rest position
• Setpoint device defective
• Do not press the pedal when
starting up the machine
• Replace setpoint device
3107
Machine temperature
• Ventilation openings closed
• Ventilation grille dirty
• Check ventilation openings
• Clean ventilation grille
3108
Speed limited due to insufficient
mains voltage
Check mains voltage
3109
Safety stop
active
Switch safety stop
off
3121
• Compressed air missing
• Compressed air insufficient
• Turn on compressed air
• Stabilize compressed air
3123
Oil level too low
Top off the oil
3210
• Thread broken
Insert thread
3215
• Empty bobbin
Change bobbin
Error code
Symbol
Meaning
Remedial action
Summary of Contents for 755 B
Page 1: ...755 B 756 B F Operating Instructions...
Page 6: ...Table of Contents 4 Operating Instructions 755 B 756 B F 00 0 02 2021...
Page 10: ...About these instructions 8 Operating Instructions 755 B 756 B F 00 0 02 2021...
Page 18: ...Machine description 16 Operating Instructions 755 B 756 B F 00 0 02 2021...
Page 292: ...Programming 290 Operating Instructions 755 B 756 B F 00 0 02 2021...
Page 306: ...Maintenance 304 Operating Instructions 755 B 756 B F 00 0 02 2021...
Page 328: ...Setup 326 Operating Instructions 755 B 756 B F 00 0 02 2021...
Page 330: ...Decommissioning 328 Operating Instructions 755 B 756 B F 00 0 02 2021...
Page 332: ...Disposal 330 Operating Instructions 755 B 756 B F 00 0 02 2021...
Page 354: ...Technical data 352 Operating Instructions 755 B 756 B F 00 0 02 2021...
Page 373: ......