Sharp MX-6500N / MX-7500N (serv.man24) Service Manual ▷ View online
MX-7500N DISASSEMBLY AND ASSEMBLY 10 – 21
L. Transfer section
(1)
Primary transfer unit
1)
Open the front cover.
2)
Remove the screw, and remove the positioning shaft.
3)
Remove the screw of the positioning unit. Check to confirm
that the arrow marks of the positioning release button are
aligned together, and push the positioning release button to
open the positioning unit.
that the arrow marks of the positioning release button are
aligned together, and push the positioning release button to
open the positioning unit.
CAUTION: When the power is turned OFF normally, the arrow
marks of the positioning release button are aligned. If,
however, the power is abruptly interrupted such as pull-
ing the power cord during operation, the arrow marks
may not be aligned. In such a case, turn the positioning
release button clockwise to align the arrow marks.
however, the power is abruptly interrupted such as pull-
ing the power cord during operation, the arrow marks
may not be aligned. In such a case, turn the positioning
release button clockwise to align the arrow marks.
If the operation is executed without aligning the arrow
marks of the positioning release button, the primary
transfer belt may be damaged.
marks of the positioning release button, the primary
transfer belt may be damaged.
No.
Name
1
Primary transfer unit
2
PTC unit
3
Registration sensor unit
4
Secondary transfer unit
2
1
1
1
1
2
2
2
4
1
1
2
3
MX-7500N DISASSEMBLY AND ASSEMBLY 10 – 22
CAUTION: Press the positioning release button securely before
opening the positioning unit.
4)
Remove the screw, and pull out the primary transfer unit and
remove it.
remove it.
(2)
PTC unit
1)
Open the positioning unit.
2)
Remove the screw, and pull out the PTC unit.
(3)
Registration sensor unit
1)
Remove the developing unit (BK).
2)
Remove the OPC drum unit (BK).
3)
Remove the primary transfer unit.
4)
Remove the PTC unit.
5)
Remove the PS unit.
6)
Disconnect the connector on the registration sensor. Remove
the screw, and remove the registration sensor unit.
the screw, and remove the registration sensor unit.
(4)
Secondary transfer unit
1)
Open the right door unit.
2)
Remove the screw, turn the secondary transfer unit by 90
degrees to remove it to the rear side.
degrees to remove it to the rear side.
2
1
1
2
2
1
3
1
2
1
2
4
3
MX-7500N DISASSEMBLY AND ASSEMBLY 10 – 23
M. Tone hopper section
1)
Remove the toner cartridge.
2)
Remove the developing unit.
3)
Remove the OPC drum unit.
4)
Remove the primary transfer unit.
5)
Remove the screw, and remove the front frame bottle cover.
(1)
Hopper cover unit
1)
To remove only the hopper cover unit, remove the screw, pull
the cover toward the front side, and lift the right side of the unit
to remove.
the cover toward the front side, and lift the right side of the unit
to remove.
CAUTION: When attaching the cover, insert the pawls (4 positions)
on the left side of the cover securely.
(2)
Hopper unit
1)
Disconnect the connector (2 positions).
2)
Remove the screw (3 pcs.).
CAUTION: When removing the screw, be careful not to hit the drum
drive shaft.
If the drum shaft is bent by applying a stress to it, the
picture quality may be affected.
picture quality may be affected.
3)
Pull the unit to the front side, lift it upward, and remove the unit.
CAUTION: When attaching the unit, insert the boss at the back of
the pipe securely before tightening the screw.
4)
When a new unit is installed, execute HP_K - Y of SIM24-5 to
clear the remaining quantity counter.
clear the remaining quantity counter.
5)
The hopper motor and the remaining quantity sensor can be
checked with SIM10-1 and 10-2.
checked with SIM10-1 and 10-2.
When a new unit is installed, if the name of sensor correspond-
ing to SIM10-2 is highlighted in black, it may be connection fail-
ure of the connector.
ing to SIM10-2 is highlighted in black, it may be connection fail-
ure of the connector.
No.
Name
1
Tone hopper unit
㽴
㽲
MX-7500N DISASSEMBLY AND ASSEMBLY 10 – 24
N. Waste toner collection section
(1)
Waste toner bottle
1)
Open the right lower door. Remove the waste toner bottle.
CAUTION: When removing the waste toner bottle or when attach-
ing the bottle cap, be careful of dirt on the waste toner
bottle.
bottle.
CAUTION: Since the removed waste toner bottle is dirty, attach the
bottle cap to it and put in the package of the spare
waste toner bottle.
waste toner bottle.
(2)
Positioning unit (Waste toner collection)
1)
Open the front cover.
2)
Remove the screw, and remove the positioning shaft.
No.
Name
1
Waste toner bottle
2
Positioning unit (Waste toner collection)
3
Waste toner transport unit
1
2
2
1
1
1
1
2
2
2
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