Sharp MX 3501N - Color Laser - Copier, Service Manual

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MX3500N FUSING SECTION N – 3
D. Fusing temperature control
The temperature sensors are provided at the center and the edges
of the upper heat roller, and at the center of the lower heat roller.
The heat roller temperature is detected by the temperature sensors
to control the heater lamp so that the temperature is maintained at
the specified level.
The fusing temperature is switched according to the machine con-
dition and paper type selected.
* For the fusing temperature set value, refer to SIM43-1 in [7] SIM-
ULATIONS.
3. Disassembly and assembly
A. Fusing section
(1) Fusing unit
1) Open the right door.
2) Remove the screws. Release the lock lever, and remove the
fusing unit.
* When installing, be sure to insert the fusing unit into the rail
on the main unit side securely.
Unit Parts Maintenance
(1) Fusing unit a Upper thermostat main
b Upper thermostat sub
c Upper thermistor side
d Upper thermistor sub
e Upper thermistor C (Non-
contact)
f Lower thermostat
g Lower thermistor
h Heater lamp upper main
i Heater lamp upper sub
j Sub roller bearing
(2)-a
(2)-e
(2)-b
(2)-b
(2)-c
(2)-d
(1)-f
(1)-l
(1)-i
(1)-g
(1)-r
(1)-s
(1)-k
(1)-j
(1)
(1)
(1)-p
(1)-q
(1)-d
(1)-m
(1)-c
(1)-e
(1)-a
(1)-b
(1)-h
(1)-t
(1)-j
(1)-n
(1)-o
(1)-o
(1)-q
(1)-u
(2)
(2)
(1) Fusing unit k Sub roller
l Heater lamp lower main
m Upper heat roller
n Fusing gear
o Upper heat roller bearing
p Lower heat roller
q Lower heat roller bearing
r Upper separation pawl
s Lower separation pawl
t Transport roller 9 (Drive) {
u Discharge brush
(2) Web unit a Web roller bearing
b Pressure bearing
c Pressure roller
d Upper web roller
e Web break rubber
Unit Parts Maintenance
1
2
2
2
3
1
1