MX-M350/M450 N/U MAINTENANCE AND DETAILS OF EACH SECTION 7 - 26
a-8. Upper heat roller
a-9. Upper heat roller gear
1) Remove the fusing unit.
2) Open the fusing unit.
3) Remove the fusing rear upper PG.
4) Remove the heater lamp.
5) Remove the upper heat roller, the roller stopper. The upper
heat roller gear, and the upper heat roller bearing.
a-10. Thermostat
1) Remove the fusing unit.
2) Open the fusing unit.
3) Remove the fusing rear upper PG.
4) Remove the heater lamp.
5) Remove the upper heat roller.
6) Remove the screw, and remove the electrode plate and the
thermostat.
∗ When installing, check to confirm that the screws are securely
tighten. (If any screw is loosened, a bad contact may cause
heating.)
∗ A loose screw will provide a bad contact and poor heating will
occur.
3. Paper feed section
A. General
This section picks up paper in the cassette and feed it to the trans-
port roller section.
The capacity of the paper feed tray is 550 sheets for 64g/m
2
or 500
sheets for 80g/m
2
.
There are three kinds of the paper feed desk: 3-stage paper feed
desk (AR-D27), 2-stage paper feed desk (AR-D28), and 1-stage
paper fed desk (AR-MU2). For details, refer to the AR-D27/D28/
MU2 Service Manual.
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