DOWNLOAD Sharp MX-5500N / MX-6200N / MX-7000N (serv.man60) Service Manual ↓ Size: 1.69 MB | Pages: 10 in PDF or view online for FREE

Model
MX-5500N MX-6200N MX-7000N (serv.man60)
Pages
10
Size
1.69 MB
Type
PDF
Document
Service Manual
Brand
Device
Copying Equipment / LSU Section-Detailed section
File
mx-5500n-mx-6200n-mx-7000n-sm60.pdf
Date

Sharp MX-5500N / MX-6200N / MX-7000N (serv.man60) Service Manual ▷ View online

MX-7000N  LSU SECTION  i – 2
2. Operational descriptions
A. Outline
Converts the image data (has been sent by way of PCU from the
image processing circuit) to laser beam, and irradiates to the OPC
drum surface.
The LSU unit is composed of the primary system (including optical
elements such as lasers and the polygon mirror and the mirror
which assures the optical path) and the scan system (which
includes the optical elements including the polygon mirror and the
mirror which assures the optical path).
By the once scanning, black laser LD sends two laser beams of
BK1 and BK2 at same time for high-speed print.
The interval in the sub-scanning direction of two laser beams is
42.3 
µ, also interval at image surface is 70 µ. The interval in the
paper feed direction of two laser beams is 70 
µ by electrically con-
trolled.
Since interval of the laser beams is adjusted at shipping, adjust-
ment about that is not required at the later.
B. Composition
(1) Primary system
(2) Scan system
(3) polygon motor
C. Outline of LSU specifications
Signal
Name
Function/Operation
LSS_BK
LSU shutter solenoid BK
Opens/closes the shutter of the LSU (BK)
LSS_CL
LSU shutter solenoid CL
Opens/closes the shutter of the LSU (CL)
LSUFM
LSU cooling fan motor
Cools the polygon motor.
PGM
Polygon mirror motor
Reflects the laser beams at constant-speed rotating.
TH1
LSU therminstor 1
Measures the temperature in LSU.
TH2
LSU therminstor 2
No.
Name
Function/Operation
1
LD PWB (K)
Controls laser beam flashing and the output value.
2
LD PWB (C)
3
LD PWB (M)
4
LD PWB (Y)
5
Cylindrical lens
Collects the laser beams, and focuses it.
6
f
θ lens 1
7
f
θ lens 2
8
Reflection mirror
Secures the path for laser beams.
9
Cylindrical lens
Collects the laser beams, and focuses it on the OPC drum.
10
Collective lens  for BD
Condenses the laser beam to the BD PWB.
11
BD PWB
Detects the timing for starting laser scanning.
12
LSU CNT PWB
Laser beams are controlled and the polygon motor control signal is generated according to the 
PCU PWB control signal and image data.
13
OPC drum
Forms electrostatic latent images according to laser beams.
Model
Number 
of mirror 
surface
Rotating speed
Bearing
Model of 55 sheets
7 surfaces
Color :
Monochrome :
35028 rpm
30371 rpm
AIR
Model of 62 sheets
Model of 70 sheets
Color : 
Monochrome : 
35028 rpm
35939 rpm
Effective scan width:
307 mm
Resolution:
600 dpi
Beam diameter:
Main scan = 50 to 65 
µm, Sub scan = 60 to 75 µm
Laser power:
Max. 0.8 mW
LD wavelength:
770 to 800 nm
MX-7000N  LSU SECTION  i – 3
D. Serial label
There is the LSU serial label on the LSU fan side.
• Unit is different in each model of 55 or 62 or 70 sheets.
3. Disassembly and assembly
A. LSU
(1) LSU
1)
Remove the left cabinet. (Refer to the "[A] EXTERNAL OUT-
FIT".)
2)
Remove the screws (A), and remove the left plate (B).
3)
Loosen the screws (C), and remove the screw (D). Remove
the screw (E), and remove the fixing plate (F). Remove the
snap band (G), and disconnect the connectors (H) and shift it
to the rear side, and remove the LSU (I) so that slide it to rear
side.
* When installing, insert the shaft (J) to cut-out portion of the
skew adjuster (K).
* After installing the LSU, be sure to check the condition of
skew image. Carry out the adjustment according to neces-
sity.
a. Dust-proof glass
Unit
Page
A
LSU
i - 3
B
Others
i - 7
Unit
Parts
Mainte
nance
Page
1
LSU
a
Dust-proof glass
{
i - 3
b
LSU CNT PWB
i - 4
c
LSU cooling fan motor
i - 5
d
Polygon motor
i - 5
e
LSU thermistor 2
f
LSU thermistor 1
i - 6
Unit
1
LSU
MODEL LSU CD UN 70
00000000
MODEL LSU CD UN 62
00000000
MODEL LSU CD UN 50
00000000
1
1-a
1-b
1-c
1-d
1-f
1-a
1-e
1-a
1
Unit
Parts
Mainte
nance
1
LSU
a
Dust-proof glass
{
B
A
A
A
C
E
F
I
H
H
1
D
G
J
K
1-a
1-a
1-a
1-a
MX-7000N  LSU SECTION  i – 4
1)
Open the front cabinet (A).
2)
Remove the claning rod (B).
3)
Check the dirt of the cleaning base (C) (tip of the cleaning rod).
* When cleaning base is dirty, replace it. (Refer to the "B. Oth-
ers".)
4)
Insert the cleaning rod (B) in the hole which cleaning is
required so that the cleaning base is made downward slowly.
5)
Insert the cleaning rod (B) all the way and slide it back and
forth a few times for cleaning.
6)
Clean all the cleaning holes (D) (4-positions) on the dustproof
glass.
* When the cleaning base became extremely dirty, replace it.
(Don't cleaning use dirty cleaning base other dustproof
glasses.)
b. LSU CNT PWB
1)
Remove the left cabinet. (Refer to the “[A] EXTERNAL OUT-
FIT”.)
2)
Remove the LSU. (Refer to the "(1) LSU".)
3)
Remove the screws (A), and remove the earth wire (B).
Remove the cover (C).
* When installing the cover (C), engage the pawls (D) to cover
lower (E). At this time be careful it bite the wire.
A
B
C
B
B
B
Unit
Parts
1
LSU
b
LSU CNT PWB
D
1-a
1-b
B
C
D
D
E
A
MX-7000N  LSU SECTION  i – 5
4)
Disconnect the connectors (F), and remove the screws (G)
and the screw (H), and remove the LSU CNT PWB (I).
* When installing, first of all install the screw (H).
* When installing, engage the PWB to the pawl (J).
c. LSU cooling fan motor
1)
Remove the left cabinet. (Refer to the “[A] EXTERNAL OUT-
FIT“)
2)
Remove the LSU. (Refer to the "(1) LSU".)
3)
Remove the screws (A), and remove the earth wire (B).
Remove the cover (C).
* When installing the cover (C), engage the pawls (D) to cover
lower (E). At this time be careful it bite the wire.
4)
Remove the screws (F), and remove the cover (G).
* When removing the cover (G), be careful to work place and
method, to don't enter the dust into the unit. Trouble (image
not fully etc.) may occur.
* When installing the cover, lock the pawl (H).
5)
Disconnect the connector (I). Remove the molt (J), and
remove the LSU cooling fan motor (K).
* When installing, point at the direction of outside with the
arrow (L).
d. Polygon motor, LSU thermistor 2
1)
Remove the left cabinet. (Refer to the “[A] EXTERNAL OUT-
FIT”.)
2)
Remove the LSU. (Refer to the "(1) LSU".)
Unit
Parts
1
LSU
c
LSU cooling fan motor
F
F
H
G
I
G
1-b
J
1-c
B
C
D
D
E
A
Unit
Parts
1
LSU
d
Polygon  motor
e
LSU thermistor 2
G
F
H
K
J
I
1-c
J
K
I
L
1-e
1-d
Page of 10
Display

Sharp MX-5500N / MX-6200N / MX-7000N (serv.man60) Service Manual ▷ Download

  • DOWNLOAD Sharp MX-5500N / MX-6200N / MX-7000N (serv.man60) Service Manual ↓ Size: 1.69 MB | Pages: 10 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.man60) in PDF for free, which will help you to disassemble, recover, fix and repair Sharp MX-5500N / MX-6200N / MX-7000N (serv.man60) Copying Equipment. Information contained in Sharp MX-5500N / MX-6200N / MX-7000N (serv.man60) 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.