Fault Codes: IIOC bus 2 com faults and 12-557 fault on UI Chains: 12 MFF
Problem:The machine states "close finisher door"on UI on MFF machines. The
machine also gives a MFF IOT communication fault and fails IIOC test type 2. If
you disconnect the finisher and run the test it passes. 24v is missing on the
MFF control when interlocked.
Cause:The 24v is missing on the MFF control pwb due to a short in the stapler head assy. In
this case I disassembled the stapler head and found a lot of staples inside the
stapler head. One of these staples was shorting the stapler cartridge interlock
Please someone help with this fault code: 12-557. Sometimes when the machine is rebooted it works fine only for it to return back to the error after a few days and probably remain that way. Please help.