I had a 86:01 Possible paper jam error this weekend on my Z3200.
I couldn't for the life of me understand what was going on.
I have been using the cutter in manual mode, and sometimes don't fully reseat the cutter. The carriage then touches or pushes the cutter back into a fully seated position as it does when it is cutting automatically.
After I cut the paper by hand, ( I usually leave an orange print head cap in the top cover sensor) The printer went through it's parc position routine but reported a paper jam.
I tried everything like passing a sheet of thick paper, looked at the feed sensor, looked at the parc pad, optical drop detector but nothing was out of place.
Tech support, instant response their opening time 8 30 , I phoned at 8 34 same service as last time , had me remove the cutter, clean the encoding strip, then open and close the print head access cover.
He explained the sensor in the carriage is overly sensitive and is easily dislodged. It is not marked in any documentation, but is 90% of the time the fault of this error, and after a real paper jam is very often dislodged which then leaves the printer in an inoperable error state. Simply opening and reseating the cover does the trick, just make sure if you have had a paper jam to really check that all foreign material is removed or you could create a serious problem.
Just wanted to share this as it is something that comes up often according to tech support.