You can move
the printer through a doorway that is less than 39 inches (99 cm)
wide by preparing it as described here.
If the printer is new, leave the packing material in place as
you move it.
If the printer has already been set up, follow the steps below
before tilting it or moving it.
When moving the printer through a narrow doorway,
tilt it to an angle of up to 75° with the platen side up as shown.
This provides clearance for a doorway as narrow as 29.6 inches
(75.2 cm).
Place the lower chassis frame edge on a padded furniture dolly,
move it through the doorway, and return it to the normal carrying
position.
Caution:
Do not set the printer flat on its end cover.
Allow the edge of the lower chassis frame to take the full weight
of the printer.