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Code
1004
1005
1006
1007
1008
1010
1011
1012
1052
1053
1054
1055
108
Possible cause
Sewing motor error: incorrect
sewing motor direction of
rotation
Motor blocked
Maximum speed exceeded
Error in the reference run
Encoder error
External synchronizer plug
(Sub-D, 9-pin) not connected
Encoder Z pulse missing
Synchronizer fault
Sewing motor overcurrent,
internal current increase
> 25 A
Sewing motor overvoltage
Internal short circuit
Sewing motor overload
Troubleshooting
Remedial action
• Replace encoder
• Check plug assignment and
change, if necessary
• Check wiring in machine
distributor and change it, if
necessary
• Test motor phases and check
for correct value
• Eliminate stiff movement in
the sewing machine
• Replace encoder
• Check class (t 51 04)
• Replace encoder
• Perform reset
• Check class (t 51 04)
• Replace encoder
• Eliminate stiff movement in
the sewing machine
• Replace encoder
• Connect cable of external
synchronizer to control, use
correct connection (Sync)
• Only required for machines with
transmission!
• Switch off the control, use
handwheel to turn, and switch
on the control again
• If error is not corrected, check
encoder
• Replace synchronizer
• Check selection of class
• Replace control
• Replace sewing motor
• Replace encoder
• Check selection of class
• Replace control
• Replace control
• Eliminate stiff movement in the
sewing machine
• Replace encoder
• Replace sewing motor
Service Instructions 969 - 06.0 - 03/2019
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