its a firmware issue, not sure if it was solved with the update,
open the front cover and close it, then tray again to ge in the service mode
however once the machine has locked out resetting F8-25 will not work.
but if you remove the drum unit at the back beside the drive gear you will find a black actuator arm. that arm needs moved back to its original home position. then once the drum is re inserted, the machine thinks its had a new drum
however replace the drum when you get the chance as soon as possible because once the drum is worn it can pull the developer stright into the waste container & thats more expense at your end.
lol just read your complete post, at least u know for next time
