Oki C5510nMFP User Manual page 101

It will be necessary to remove the four image drums to
gain access to the paper path.
4. Holding it by its top center, lift the cyan image drum,
complete with its toner cartridge, up and out of the
printer.
5. Put the cartridge down gently onto a piece of paper to
prevent toner from marking your furniture and to avoid
damaging the green drum surface.
The green image drum surface at the base of the
cartridge is very delicate and light sensitive. Do not
touch it and do not expose it to normal room light for
more than 5 minutes.
6. Repeat this removal procedure for each of the remaining
image drum units.
CAUTION!
Troubleshooting> 100