DOWNLOAD Sharp MX-5500N / MX-6200N / MX-7000N (serv.man63) Service Manual ↓ Size: 3.47 MB | Pages: 13 in PDF or view online for FREE

Model
MX-5500N MX-6200N MX-7000N (serv.man63)
Pages
13
Size
3.47 MB
Type
PDF
Document
Service Manual
Brand
Device
Copying Equipment / Developing Section-Detailed Section
File
mx-5500n-mx-6200n-mx-7000n-sm63.pdf
Date

Sharp MX-5500N / MX-6200N / MX-7000N (serv.man63) Service Manual ▷ View online

MX-7000N  DEVELOPING SECTION  L – 2
2. Operational descriptions
Electrostatic latent images generated on the OPC drum by the
laser (writing) units (laser image ray) are converted into visible
images by toner.
Toner and carrier in the developing unit are stirred and transported
by the mixing roller.
By mixing and transporting, toner and carrier are negatively
charged due to mechanical friction.
The developing bias voltage (AC component and negative DC
component) is applied to the developing roller.
Negatively charged toner is attracted to the exposed section on the
OPC drum where the negative potential falls due to the developing
bias.
If the OPC drum is not exposed, the negative potential is higher
than the developing bias voltage, and toner is not attracted.
3. Disassembly and assembly
A. Development unit (CL)
(1) Development unit (CL)
Signal
Name
Function/Operation
BS_C
Developer bias (C)
Developer bias
BS_K
Developer bias (K)
BS_M
Developer bias (M)
BS_Y
Developer bias (Y)
DVCM
Developer drive motor_CL
Drives the development section (CL)
DVKM
Developer drive motor_K
Drives the developement section (K) /Drives the separating operations of the primary transfer belt
PTMH_1
Intermediate hopper motor
Transports the toner
PTMH_2
Stirring motor
Stirs the toner
TCS_C
Toner density sensor (C) (ATC)
Detects the toner density in the developing unit
TCS_K
Toner density sensor (K) (ATC)
TCS_M
Toner density sensor (M) (ATC)
TCS_Y
Toner density sensor (Y) (ATC)
No.
Name
Function/Operation
1
Developer roller
Latent electrostatic images on the OPC drum are changed to visible images
2
Stirring roller
Stirring developer
3
Toner filter
Prevents dispersing of toner
4
DVK DRIVER PWB
Controls the  toner stirring motor 
Unit
Page
A
Development unit (CL)
L - 2
B
Development unit (BK)
L - 6
Unit
Parts
Mainte
nance
Page
1
Development 
unit (CL)
a
Developer (C/M/Y)
L - 4
b
DV seal (CL)
L - 5
c
DV side seal F (CL)
d
DV side seal R (CL)
e
Toner density sensor (ATC)
L - 5
f
Toner filter (CL)
L - 5
Unit
1
Development unit (CL)
1-a
1-c
1-b
1-f
1-e
1-d
1
1
MX-7000N  DEVELOPING SECTION  L – 3
1)
Open the front cabinet (A).
2)
Turn the blue screw (B) counterclockwise. Check that the lock
is released as shown in (C).
* Failure to complete this step may damage the primary trans-
fer belt.
3)
Remove the screw (D). Hold the drum fixing knob (E) by the
hand to not rotate, remove the screw (F). Remove the drum
fixing knob (E).
4)
Pull out the fixing cover (G).
5)
Loosen the screws (H), and open the cover (I) of the process
section.
6)
Loosen the screw (J).
7)
Pinch the knob (K), and remove the development unit (CL) (L).
A
B
C
E
D
F
G
H
H
I
J
L
K
MX-7000N  DEVELOPING SECTION  L – 4
a. Developer (C/M/Y)
1)
Remove the development unit (CL).  (Refer to the "(1) Devel-
opment unit (CL)".)
2)
Remove the screws (A).
3)
Pinch the part of (B), and remove the cover (C)  in the arrow
direction.
4)
Take out the old developer (D), and infuse the developer (E).
* When replacing developer, use an extreme care not to drop
developer on the drive section (marked with {).
* [Important information]
(Note for cleaning the development unit)
If the development unit is cleaned with a cleaner or an air blower
with much developer in the development unit, static electricity
may be accumulated in the unit. In order to prevent against this,
note the following items.
* If metal part is brought into contact with the magnet roller sur-
face when transporting developer or removing foreign material
from the magnet roller, developer may adhere to the magnet
roller surface. Be careful to avoid this when handling the mag-
net roller.
* Remove developer in the development unit as well as devel-
oper attached to the magnet roller as far as possible.
* (When cleaning the development unit with an air blower [duct]) 
Before cleaning with an air duct, remove developer from the
unit as far as possible, and ground the magnet roller rear side
cored bar as shown in the figure below and clean the unit with
an air blower. (Do not pinch the grounding wire with a crocodile
clip connector in order to prevent against damage on the cored
bar.)
Unit
Parts
Mainte
nance
1
Development unit 
(CL)
a
Developer (C/M/Y)
1-a
A
A
B
B
C
B
E
1-a
D
the magnet roller
rear side cored bar
MX-7000N  DEVELOPING SECTION  L – 5
* After supplying developer, do not tilt the development unit.
b. DV seal (CL), DV side seal F (CL), DV side seal R (CL)
1)
Remove the development unit (CL).  (Refer to the "(1) Devel-
opment unit (CL)".)
2)
Remove the DV seal (CL) (A), the DV side seal F (CL) (B), and
the DV side seal R (CL) (C).
* Attach the DV seal (CL) (D) and DV side seal F (CL) (E) and
DV side seal R (CL) (F) along the reference line.
c. Toner density sensor C/ M/ Y (ATC)
1)
Remove the development unit (CL).  (Refer to the "(1) Devel-
opment unit (CL)".)
2)
Remove the screws (A), and remove the guide (B). Remove
the screws (C), and disconnect the connector (D), and remove
the toner density sensor C/M/Y (ATC) (E) and mylar (F).
* When pasting the mylar, paste it along the reference line.
d. Toner filter (CL)
Unit
Parts
Mainte
nance
1
Development unit 
(CL)
b
DV seal (CL)
c
DV side seal F (CL)
d
DV side seal R (CL)
1-c
1-b
1-d
B
A
C
1-b
1-c
1-d
0 - 0.2mm
0 - 0.3mm
0 - 0.3mm
0 - 0.3mm
0 - 0.3mm
0 - 0.5mm
E
F
D
Unit
Parts
1
Development unit 
(CL)
e
Toner density sensor C/M/Y (ATC)
Unit
Parts
Mainte
nance
1
Development unit 
(CL)
f
Toner filter (CL)
1-e
B
1-e
A
A
C
D
E
F
0 - 0.5mm
referance
reference
0 - 0.3mm
1-f
Page of 13
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Sharp MX-5500N / MX-6200N / MX-7000N (serv.man63) Service Manual ▷ Download

  • DOWNLOAD Sharp MX-5500N / MX-6200N / MX-7000N (serv.man63) Service Manual ↓ Size: 3.47 MB | Pages: 13 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Sharp MX-5500N / MX-6200N / MX-7000N (serv.man63) in PDF for free, which will help you to disassemble, recover, fix and repair Sharp MX-5500N / MX-6200N / MX-7000N (serv.man63) Copying Equipment. Information contained in Sharp MX-5500N / MX-6200N / MX-7000N (serv.man63) Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.