Inner Jam; Paper Guide D - Brother HL-3450CN Service Manual

3.2

Inner Jam

Problem Item Step
1
2
Transfer Unit 3
4
5
6
Fusing Unit 7
8
3.2.1

Paper guide D

Fusing unit and its peripheral parts are very hot. Before starting the replacement work, make
it sure that the unit and parts is well cooled down.
(1) Turn the power switch off and unplug the power cord from the outlet.
(2) Confirm that the temperature of the unit and parts is well cooled down.
(3) Open the paper exit unit.
(4) Turn the set screws (2pcs.) of fusing unit.
(5) Holding the handle of both sides, remove the fusing unit.
NOTE:
When removing the fusing unit, maintain the unit horizontally so that no oil leakage.
Table 8-4
Check Item
Open the transfer unit and
check.
Is there any paper inside the
unit?
Is the transfer roller firmly
locked by the lock lever?
Is the paper discharger unit
installed in place?
Is there paper dust around the
registration roller?
Is the wire of the paper
discharger unit damaged?
Is the fusing unit installed in
place?
Is there any paper trapped
between the rollers?
Is there fuser oil still in the oil
bottle?
Fig. 8-2
8-11
Result
Remove the paper inside.
YES
Fix the transfer roller with
NO
the lock lever.
Install the paper discharger
NO
unit firmly in place.
Clean the registration roller
YES
with a cotton cloth.
Replace the existing paper
YES
discharger unit with a new
one.
Install the fusing unit firmly
NO
in place.
Remove the trapped paper.
YES
Replace the existing oil
NO
bottle with a new one.
CAUTION
Fusing unit
Paper exit unit
HL-3450CN SERVICE MANUAL
Action