mine does not rub off..looks like roller marks horizontally more darker toward left side of page.
the drum is the issue i agree. i tried to clean it out...then ran copies and much improved but still get some streaking...
i wonder if i need a new drum or not...there are some parts of drum that i didnt want to break to take apart...maybe its clogged with toner in there
after replacing the yellow battery, same errors could not complete install and speed configuration errors.
# admin buttons allows access to admin functions and then prompts password...its not 1111 or serial number but 1934.
after that reset nvm settings like paper speed etc.
now my problem is streaking when copying so im trying to troubleshoot that problem
when copier boots up, i get error telling me to power down. the errors are speed configuration errors. will not copy at all. just logs one job on top of another.
i pulled the rear board with battery, tested it and indeed the battery was low and bad, bought new one and get same errors as i guess i need to set nwm.
problem is i hit # admin and get a passwaord prompt, and does not accept 1111, serial number so im stuck now on how to set nwm