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Troubleshooting
Operating Instructions 868-M - 01.0 - 12/2020
Information
Possible cause
2221
DA stepper card 2 encoder
plug (Sub-D, 9-pin) not
connected
2222
DA stepper card 2 flywheel
position not found
3103
Low voltage warning
st
(1
threshold)
Mains voltage < 180 V AC
3108
Speed limited due to
insufficient mains voltage
3150
Maintenance necessary
3155
No release for sewing
process
3160
Stitch loosening device
3215
Bobbin stitch counter (info
value 0 reached)
3216
Remaining thread monitor
left
3217
Remaining thread monitor
right
3218
Remaining thread monitor
left and right
3223
Skip stitch detected
3224
Bobbin failed to rotate
Remedial action
• Connect encoder cable
to the control, use
correct output
• Check connection cables
• Check stepper motor 2
for stiff movement
• Check the mains voltage
• Stabilize the mains
voltage
• Use generator
• Check the mains voltage
• Information on lubricating
the machine
Service Instructions
• Parameter t 51 20-t 51 33
= 25
• Input signal for sewing
process release required
• Stitch loosening cannot be
performed
• Change bobbin, set
counter value
• Press counter reset
button
• Change the left bobbin
• Change the right bobbin
• Change the left and right
bobbin
139
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