Sharp MX-6240N / MX-7040N (serv.man29) Service Manual ▷ View online
MX-7040N DISASSEMBLY AND ASSEMBLY 10 – 49
E. Paper transport section
(1) Interface unit
a. Transport roller 6, Transport roller7
1)
1)
Clean the transport roller 6 and the transport roller 7.
(2) Vertical transport unit
a. Transport roller 11, Transport roller 12
1)
1)
Clean the transport roller 11 and the transport roller 12.
(3) LCC transport unit
a. Transport roller 14, Transport roller 15, Transport roller 16
1)
1)
Clean the transport roller 14 and the transport roller 15 and the
transport roller 16.
transport roller 16.
(4) PS lower unit
a. Transport roller 13
1)
1)
Clean the transport roller 13.
(5) PS unit
a. Transport roller 17
1)
1)
Clean the transport roller 17.
b. Registration roller (Drive), Registration roller (Idle)
1)
1)
Clean the registration roller (Drive) and the registration roller
(Idle).
(Idle).
MX-7040N DISASSEMBLY AND ASSEMBLY 10 – 50
F. LSU section
(1) LSU
a. Dust-proof glass
1)
1)
Open the front cover.
2)
Insert the LSU cleaning rod into the LSU cleaning hole with the
cleaning base faced downward, and clean the dust-proof
glass.
cleaning base faced downward, and clean the dust-proof
glass.
(2) LSU cleaning rod
a. Cleaning base
1)
1)
Open the front cover.
2)
Remove the LSU cleaning rod from the front cover.
3)
Remove the cleaning base from the lead edge of the LSU
cleaning rod.
cleaning rod.
G. Developing section
(1) Development unit
a. Developer
CAUTION: Always keep the DV unit with developer in it horizontal
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.
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.
1)
Remove the screw, and remove the DV cover.
[Note for attaching the DV cover]
When attaching the DV cover, be careful of the following items:
1. Insert the convex portion in the angle shown below.
When attaching the DV cover, be careful of the following items:
1. Insert the convex portion in the angle shown below.
2. Turn the cover to attach.
1
1
2
MX-7040N DISASSEMBLY AND ASSEMBLY 10 – 51
3. Check to confirm that three convex portions are securely
engaged.
2)
Discharge old developer from the DV unit.
CAUTION: When discharging developer, rotate the coupling pulley
in the rear side of the DV unit in the arrow direction
while the operation.
while the operation.
3)
Supply new developer into the DV unit.
CAUTION: When supplying developer, rotate the coupling pulley in
the rear side of the DV unit in the arrow direction while
the operation.
the operation.
b. DV blade
1)
1)
Remove the screw, and remove the DV doctor cover.
CAUTION: When installing, check to confirm that the hook of the
DV doctor cover is securely engaged with the position-
ing boss.
ing boss.
2)
Check the DV blade.
CAUTION: When replacing the DV blade, attach it to the attach-
ment reference.
CAUTION: After attaching the DV blade, check the DV blade for
any deformation or wavering.
c. DV side seals F/R
1)
1)
Check the DV side seals F/R.
CAUTION: When replacing the DV side seals F/R, attach them to
the attachment references.
CAUTION: When attaching the DV side seals F/R, be careful not to
cover the DV blade with the DV side seals.
1
2
Wall surface reference
0.3mm
0mm
Rib
ref
erence
0.5mm
0mm
0.3mm
0mm
Edge
ref
erence
erence
0.3mm
0mm
0.3mm
0mm
Edge
ref
erence
0.3mm
0mm
DV BOX edge
reference
Mark-off line
inside reference
MX-7040N DISASSEMBLY AND ASSEMBLY 10 – 52
d. Toner filter
1)
1)
Remove the screw, and remove the filter cover. Remove the fil-
ter holder.
ter holder.
CAUTION: When attaching the filter cover, do not rotate but attach
straight from the top. (See the figure below.)
H. OPC drum section
(1) OPC drum unit
a. Drum
1)
1)
Release the lock, and remove the drum.
CAUTION: Since the drum has directional property, be careful not
to mistake the installing direction when installing.
"F" mark is put on the drum front side.
"F" mark is put on the drum front side.
CAUTION: When the OPC drum is removed, perform the following
procedures.
1)
After removing the OPC drum, apply stearic acid powder
(UKOG-0312FCZZ) to the whole surface of the OPC drum.
(UKOG-0312FCZZ) to the whole surface of the OPC drum.
2
3
1
1
OK
NG
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