cancel
Showing results for 
Search instead for 
Did you mean: 
Highlighted
New Member
New Member

WC7855 Finisher Main Tray Not Available

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.

0 Kudos
2 Replies
Highlighted
Valued Advisor
Valued Advisor

Re: WC7855 Finisher Main Tray Not Available

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
switch.

Please be sure to select "Accept Solution" and or select the thumbs up icon to enter Kudos for posts that resolve your issues. Your feedback counts!

Joe Arseneau
0 Kudos
Highlighted
Occasional Advisor
Occasional Advisor

Re: WC7855 Finisher Main Tray Not Available

What kind of a finisher is it? An office finisher I would assume. If its related to the stapler it could be the wire harness under the stapler that follows it to the back and front of the finisher when it moves. They wires may be damaged.
0 Kudos