Sharp MX-6500N / MX-7500N (serv.man24) Service Manual ▷ View online
MX-7500N DISASSEMBLY AND ASSEMBLY 10 – 69
5)
Remove the screws, and remove the pressure release unit.
6)
Remove the screw and remove the Fusing middle paper guide.
CAUTION: When attach the paper guide, insert the paper guide
under the separation plate.
7)
Disconnect the connector of the heater lamp. Remove the
screw, and remove the holder.
screw, and remove the holder.
8)
Disconnect the connector of the heater lamp.
9)
Remove the screw, and remove the lamp holder. Remove the
heater lamp.
heater lamp.
10) Remove the spring. Remove the screws, and remove the fixing
plate. Remove the pressure roller unit. Remove the gear.
NOTE: Before installing the pressure roller, clean the surface of
fusing belt and pressure roller with alcohol.
NOTE: After exchanging the roller, install the unit immediately or
cover the unit with sheet, in order to avoid attaching dust.
3
2
1
1
1
1
Insert the pawl
into the square
hole and slide it
to attach.
into the square
hole and slide it
to attach.
Insert the
paper guide
under the
separation
plate.
paper guide
under the
separation
plate.
Insert the paper
guide under the
separation plate.
guide under the
separation plate.
2
3
1
1
2
1
2
3
1
1
4
5
2
2
2
2
3
3
MX-7500N DISASSEMBLY AND ASSEMBLY 10 – 70
11) Remove the C-ring from the pressure roller, and remove the
pressure roller gear. Remove the pressure roller gear, and the
frame.
frame.
f. Separation plate
1)
Remove the springs, and remove the separation plate.
2)
Remove the screws from the separation plate.
g. Fusing paper exit detector
1)
Remove the rear transport unit.
2)
Remove the E-ring and the bearing. Remove the screw, and
remove the holder. Remove the fusing paper exit detector.
remove the holder. Remove the fusing paper exit detector.
h. Heat insulation bushing, Heat roller bearing, Meandering
suppression collar, Heat roller
1)
Remove the web unit.
2)
Remove the pressure roller unit.
3)
Remove the separation plate.
4)
Disconnect the connector of the fusing belt unit.
5)
Remove the screw, and remove the fuser belt unit.
CAUTION: Handle the fusing belt unit integrally with the fusing unit
case.
Never attach the fusing belt unit to another unit. If it
should be attached to another unit, the meandering
adjustment function of the fusing belt turns into an
unbalanced state, resulting in breakage of the belt.
should be attached to another unit, the meandering
adjustment function of the fusing belt turns into an
unbalanced state, resulting in breakage of the belt.
1
2
3
4
4
3
2
1
1
2
1
2
1
2
4
2
3
5
1
1
2
1
MX-7500N DISASSEMBLY AND ASSEMBLY 10 – 71
6)
Remove the screw, and remove the lamp holder. Remove the
heater lamp.
heater lamp.
7)
Remove the springs.
8)
Remove the C-rings, the heat insulation bushings, the heat
bearings, and the meandering suppression collars.
bearings, and the meandering suppression collars.
9)
Remove the heating roller.
i.
Fusing roller bearing, Fusing roller, Fusing belt
1)
Remove the c-rings and fuser roller bearings.
2)
Remove the screws, and remove the holder.
3)
Remove the fusing roller, and the fusing belt.
1
1
2
2
3
1
1
2
2
2
1
MX-7500N DISASSEMBLY AND ASSEMBLY 10 – 72
[Handling of the fusing belt]
Note that the fusing belt used in this model is different from the con-
ventional ones, and use enough care when handling as described
below.
ventional ones, and use enough care when handling as described
below.
A. Removal from the package
1)
Insert your fingers inside the belt surface, and extend it with
your fingers to slowly lift and remove.
your fingers to slowly lift and remove.
2)
When putting the fusing belt on a work table, place it vertically
on the work table with care.
on the work table with care.
3)
Never touch the outer surface of the fusing belt.
B. How to hold the belt when checking the belt surface
1)
After removing the fusing belt as in A-1, stretch the belt surface
with your fingers from the inside for check.
with your fingers from the inside for check.
C. Other cautions
1)
Do not put the fusing belt diagonally onto a work table.
2)
Do not put anything on the fusing belt which is standing.
3)
When inserting the fusing belt and the heat roller, be careful
not to hit them on the belt edge.
not to hit them on the belt edge.
D. Warning!
Never execute the following items, which may cause breakage of
the belt.
the belt.
1)
Never press the surface with your fingers.
2)
Never hold the edge.
3)
Never hit on the edge.
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