Samsung CLP 550 - Manual (Page 165)

M AINTAINING Y OUR P RINTER 6.35
6
9 Insert the imaging unit back into the printer. Make sure you
hear it click, and then fold the handle down. For details, see
steps 9 to 10 on page 6.17.
C AUTION : Replace the imaging unit carefully so as not to scratch
and damage the surface of the green roller on the imaging unit.
10 Insert the transfer belt back into the printer. Press it firmly
to make sure it fits into place. For details, see steps 9 and
10 on page 6.25.
N OTE : Keep the transfer belt level and do not turn the transfer
belt over otherwise loose toner may be spilled.