Colorqube 8880 Error 91,721.00:39904

[b3nb123]

I just  removed the side panel and watched the book sequence - something is jammed, making the gearbox slip gears during boot. It only gets as far as about 20%, gives error 94,700.00:39904 then starts the book all over again. I video'd it here:
https://youtu.be/yZDF6KE_uTg


Edit - I've found out the error 94,700 is 'Process Drive Fault' from a service manual I managed to download. These things look so complicated!

[b3nb123]

I had a powercut through the night, and another a few minutes later.I heard the printer start to reboot after the first one, from my home-office so I figure it was interrupted during a boot sequence.

This morning I found a paperjam had happened, it had pulled 3 sheets through together (It's never done this)

And when I removed the jam it's now showing Error 91,721.00:39904

Any ideas what this is? 

I had had the message that the maintenance kit is close to needing replacing, so I've just tried to remove it, but it's jammed in there... The tilt mechanism that lifts the squeegee up to clean the roller maybe stuck in the lfted position or something?