Sharp MX-6500N / MX-7500N (serv.man24) Service Manual ▷ View online
MX-7500N DISASSEMBLY AND ASSEMBLY 10 – 17
3)
Remove the screws, mylar, plate and Double feed sensor.
4)
Remove the screws.
5)
Remove the screws and the board unit.
6)
Disconnect the connector.
7)
Remove the screws, plate and the double feed sensor.
(9)
CIS sensor
1)
Remove the CIS harness cover and clamp, remove the cables
from the harness guide and disconnect the connector.
from the harness guide and disconnect the connector.
2)
Remove the screw and remove the CIS sensor.
3)
Disassemble the CIS sensor.
MX-7500N DISASSEMBLY AND ASSEMBLY 10 – 18
H. LSU section
(1)
LSU
1)
Remove the left cabinet upper.
2)
Remove the screw, and remove the cover.
3)
Disconnect the connector from LSU. Remove the screw, and
pull out the LSU.
pull out the LSU.
4)
Disconnect the connector from LSU Driver board. Remove the
screw, and remove the LSU Driver board.
screw, and remove the LSU Driver board.
Note for disassembling the LSUcnt PWB
Do not hold the right and left edges of the LSUcnt PWB when dis-
assembling.
assembling.
* The board may be warped, resulting in solder separation of built-
in parts.
Be sure to hold the upper and lower edges of the LSUcnt PWB
when disassembling.
when disassembling.
Note for assembling the LSUcnt PWB
No.
Name
1
LSU
2
1
1
1
1
NG
OK
When connecting in board-to-board, press these points to engage.
MX-7500N DISASSEMBLY AND ASSEMBLY 10 – 19
I.
Toner supply section
(1)
Toner cartridge
1)
Open the cover.
2)
Pull out and remove the toner cartridge.
CAUTION: When assembling, do not push abruptly. Insert slowly
and horizontally with your hand on it until it is inserted to
the bottom.
the bottom.
CAUTION: Do not install a toner cartridge of a different color. Be
sure to install a toner cartridge of the same color.
J. Developing section
(1)
Development unit
1)
Open the front cover.
2)
Remove the screw, and remove the positioning shaft.
No.
Name
1
Toner cartridge
M
Y
C
BK
No.
Name
1
Development unit
2
1
1
1
1
2
2
2
MX-7500N DISASSEMBLY AND ASSEMBLY 10 – 20
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: Remove the screw of the positioning unit. Check to con-
firm that the arrow marks of the positioning release but-
ton are aligned together, and push the positioning
release button to open the positioning unit.
ton are aligned together, and push the positioning
release button to open the positioning unit.
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.
4)
Release the lock, and pull out the developing unit and remove
it.
it.
CAUTION: If the drum unit is abruptly inserted, developer may spill.
Insert slowly and horizontally by putting your hand on it.
CAUTION: Always keep the DV unit with developer in it horizontal
when handling.
Since this unit employs the developer refresh method, if
the DV unit is tilted, developer may fall into the waste
toner transport section because of its structure.
the DV unit is tilted, developer may fall into the waste
toner transport section because of its structure.
K. OPC drum section
(1)
OPC drum unit
1)
Remove the developing unit.
2)
Release the lock, and pull out the OPC drum unit and remove
it.
it.
Note for installing the OPC drum unit
CAUTION: Fit the marks as shown below to insert.
CAUTION: Check that the bottom of the OPC drum unit is engaged
in the machine rail before insertion.
4
1
1
2
3
No.
Name
1
OPC drum unit
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