Oki CX2731 - Page 223

223 – Replacing Consumables
CX2731 MFP Basic User’s Guide
e) Hold the blue handles of the new image drum unit and place it
into the machine.
f) Reinstall each color toner cartridge: First align the holes (1) of
the image drum unit with the posts (2) on the left end of the
toner cartridge.