My (relatively lightly used) Lexmark colour laser had stopped picking up
paper. I wasn't particularly optimistic that cleaning the rollers would
work, and expected to have to delve into the works. I was pleased to
find on removing the (only) feed tray and turning it on its side that
the rollers were readily accessible, and 1 ml of propanol on a cotton
bud had it up and running in about a minute.