No
Switch main switch of machine on
Fine-wire fuses o.k.?
Measure 24 V supply voltages at connector X44
Switch main switch of machine off
Dismount MC
(before doing so, label cables and/or
connectors, if required.)
MC probably defective (PLC board, etc.)
Check fine-wire fuses on PLC board
24 V voltages available?
Contacts o.k.?
Repair defect in electrical
cabinet etc.
No
Yes
Yes
Replace fine-wire fuses
Checking X44
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