Brother HL-3450CN Service Manual page 196

CHAPTER 6 PERIODIC MAINTENANCE
N
When removing the fusing unit, take care to keep the unit level so that no oil leakage or
spillage occurs.
N
When shipping the printer, remove the oil bottle and the fuser cleaner from the fusing unit.
After removing the oil bottle, be sure to remove the oil remaining in the fusing unit with the
supplied syringe. Failure to do so will cause severe damage to the printer.
Sequence of Replacement
(1) Prepare a new fusing unit before
starting the replacement work.
(2) Set the fusing unit pressure release
levers to the SET position. (Fig.6-16)
(3) Install the oil bottle and fuser cleaner
to the new fusing unit.
Sequence of Assembling
(1) Install the new fusing unit onto the
printer. (Fig. 6-17)
i) After setting the fusing unit in place,
lightly press down the unit to firmly
connect to the connector on the
base.
ii) Tighten the two screws to secure the
fusing unit.
iii) Close the top cover.
When replacing the fusing unit, take time and great care to complete the job properly.
Application of strong force to the fusing unit may result in the failure of the fusing unit and
other parts.
CAUTION
Pressure
release lever
Fusing unit
PRECAUTION
6-24
Pressure release
lever
Fig. 6-17
Fig. 6-18