We had a FS-2020D come in for repair. Original problem was constant jams. Found the cause of jams was a small piece of paper wedged in the 'guide, feed up ' in the duplexer.
When cleared and could run an event log, I found several 6400 error codes at approximately 2K intervals. Then while running test prints, I got a " ERROR - POWER OFF F615 " error code. I could not find this code listed in the manual. After I power-cycled the printer and ran another event log: I found the following shown; F615 ; F46F ; and 6400 ; all at the same page count. Have any of you great techs had anything like this before, or any info on these codes?
I will update the firmware and run more test prints, and see if this helps.
Any input will be appreciated.