MX-5500N, MX-6200N, MX-7000N (serv.man56). Scanner Section-detailed Section — Sharp Copying Equipment Service Manual (repair manual)

Model
MX-5500N MX-6200N MX-7000N (serv.man56)
Pages
10
Size
1.81 MB
Type
PDF
Document
Service Manual
Brand
Device
Copying Equipment / Scanner Section-detailed Section
File
mx-5500n-mx-6200n-mx-7000n-sm56.pdf
Date

View Sharp MX-5500N / MX-6200N / MX-7000N (serv.man56) Service Manual online

MX-7000N  SCANNER SECTION  D – 1
MX-7000N
Service Manual
 
[D] SCANNER SECTION
1. Electrical and mechanism relation diagram
Signal
Name
Function/Operation
CLI
Scanner lamp
MHPS
Scanner home position sensor
Detects the home position of the copy lamp unit
MIM
Scanner motor
Drives the copy lamp unit and the mirror base unit
No.
Name
Function/Operation
1
Pulley belt
Transmits the scanner motor power to the pulley
2
Pulley
Drives the scanner drive wire
3
Scanner drive wire
Transmits the scanner motor power to the copy lamp unit and the mirror base unit
4
Reflector
Condenses the copy lamp light
5
No. 2 mirror
6
No. 3 mirror
7
Lens
8
CCD PWB
9
Idle gear
Transmits the scanner motor power to the belt
CN3
501190-4017
CN1
501190-2017
CN148
501190-4017
CN147
501190-2017
CN137
CCD PWB
CCD_CLK1+
16 17 18 19 20
2 3
38
40
39
35
1
30
15
5 6 7 8
12 13 14
AD_MCLK- AD_BLKCLP
SH_OUT-
AD_RDSI CCD_CLK1-
AGND AGND
TC- TE-
AGND AGND
AGND AGND TC+ TE+
AGND AGND
34
36 37
32 33
CCD_SH
31
AD_MCLK+
AD_CLPIN
26 27 28 29
20 21
24 25
23
/RES_CCDAD CCD_CLK2-
22
AD_SCLK CCD_CLK2+ AD_WRSO
AGND AD_SEN
18 19
A3.3V
CCD_RS- /LVDS_STBY
AGND
15 16 17
CCD_CP-
AGND
CCD_CP+
A5V AGND AGND
CCD_RS+
11 12 13 14
7 8 9 10
1 2
AGND AGND A12V
5 6
3 4
AGND
9 10 11
4
AGND AGND
CLKP1_OUT+ SH_OUT+ CLKP1_OUT-
TB+ TD+ TB- TD- AGND AGND TA+ TCLK+ TA- TCLK- AGND AGND
AGND AGND AGND A12V
CCD_CP-
AGND
CCD_CP+
A5V AGND AGND
CCD_RS+
A3.3V
CCD_RS- /LVDS_STBY
AGND
/RES_CCDAD
AD_RDSI CCD_CLK1-
CCD_CLK2- AD_SCLK CCD_CLK2+ AD_WRSO
AGND AGND
AD_CLPIN AD_MCLK- AD_BLKCLP AD_MCLK+ CCD_SH
AGND AGND
CLKP1_OUT+ SH_OUT+ CLKP1_OUT- SH_OUT-
AGND AGND
24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
CCD_CLK1+
23
AGND AD_SEN
AGND AGND TC+ TE+ TC- TE- AGND AGND TB+ TD+ TB- TD- AGND AGND TA+ TCLK+
TA- TCLK- AGND AGND
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
1 2 3 4
MiM_A MiM_B MiM_/A MiM_/B
MIM
1
2
3
MHPS
CLI
CN134
3 2 1
1 2 3
MHPS D-GND
5V
MHPS D-GND
5V
CL
INVERTOR
PWB
CN130
1
P-GND P-GND
CL
24VPD 24VPD
5 4 3 2
5
P-GND P-GND
CL
24VPD
1 2 3 4
24VPD
1
2
SCN-CNT PWB
8
4
3
7
5
6
2
9
MX-7000N  SCANNER SECTION  D – 2
2. Operational descriptions
A. Outline
This section functions and operates as follows:
1)
The copy lamp radiates light onto the document, and the con-
trast of the reflected light is scanned by the three line (RGB)
CCD element and converted into image signals (analog).
2)
The image signals (analog) are converted into 10bit digital sig-
nals by the A/D converter.
3)
The image signals (digital) are sent to the image process sec-
tion (scanner control PWB).
B. Detail description
(1) Optical section drive
The optical section drive power is transmitted from the scanner
motor (MIM) to the drive pulley and the wire through the belt, to
drive the copy lamp unit and the mirror base which are attached by
the drive wires.
The scanner motor (MIM) is controlled by the drive signal sent from
the scanner control PWB.
(2) Scanner lamp drive
The scanner lamp (CLI) is driven by the scanner lamp drive voltage
generated in the CL inverter PWB according to the control signal
sent from the scanner control PWB.
(3) Image scan/color separation
The copy lamp radiates light onto the document, and the contrast of
the reflected light is scanned by the three line (RGB) CCD element
and converted into image signals (analog).
Each color component of RGB is separately extracted from the
document image by the three lines (RGB) of the CCD elements.
The red CCD extracts the red components from the document
image, the green CCD the green components, and the blue CCD
the blue components. This operation is called Color Separation.
A CCD element has three CCD elements of RGB.
Scanning of a document in the main scanning direction is per-
formed by the CCD elements. Scanning of a document in the sub
scanning direction is performed by shifting the scanner unit position
with the scanner motor.
Document images are optically reduced by the lens and projected
to the CCD elements.
Scanning resolution is 600 dpi.
(Image data per 1 line)
(4) Image signal A/D conversion
1)
Each image signal (analog) of RGB is converted into 10bit dig-
ital signal by the A/D converter.
Each color pixel has 10bit information.
2)
Each 10bit digital image signal of RGB is sent to the image
process section. 
(5) Zooming operation
Zooming in the sub scanning direction is performed by changing
the scanning speed in the sub scanning direction.
Zooming in the main scanning direction is performed by the image
process technology (software), it is not achieved optically.
B
R
G
R
G
B
Red component of
image data
Blue component of
image data
Freen component of
image data
R
G
B
CCD PWB
B ADC
Transfer IC
B
B
3
CCD
B
IC
G
IC
R
IC
G ADC
R ADC
R
R
G
G
MX-7000N  SCANNER SECTION  D – 3
3. Disassembly and assembly
A. Scanner unit
(1) Scanner unit
1)
Remove the upper cabinet rear cover. (Refer to the "[A]
EXTERNAL OUTFIT".)
2)
Remove the DSPF unit. (Refer to the "[C] DSPF SECTION".)
3)
Remove the table glass and the SPF glass. (Refer to the “a.
Table glass, SPF glass”.)
4)
Remove the upper cabinet rear, the upper cabinet left, the
upper cabinet right, the front cabinet upper, and the operation
panel base plate. (Refer to the "[A] EXTERNAL OUTFIT".)
5)
Remove the operation panel unit. (Refer to the "[B] OPERA-
TION PANEL".)
6)
Remove the screw (A), and remove the earth wire (B). Discon-
nect the connectors (C). Remove the snap band (D), the mylar
sheet (E), and remove the harnesses (G) from edge saddles
(F).
Unit
Parts
Mainte
nance
Page
1
Scanner unit
a
Table glass
{
D - 4
b
SPF  glass
{
c
Lens
{
D - 5
d
CCD
{
e
Reflector
{
D - 5
f
Mirror
{
g
Scanner lamp
{
h
CL inverter PWB
i
CCD unit
D - 6
j
Rails
D - 7
k
Drive wire
D - 7
l
Drive belt
m
Scanner motor
D - 7
n
Scanner home position 
sensor
D - 8
o
Original cover SW
D - 8
p
Document detection light 
collector PWB
D - 8
q
Document detection light 
emitting PWB
D - 9
1-a
1-k
1-k
1-m
1-o
1-b
1-n
1-c
1-i
1-f
1-f
1-e
1-h
1-d
1-l
1
1-g
1-j
1-q
1-p
1-j
Unit
1
Scanner unit
1
C
D
G
G
D
E
B
A
F
C
F
MX-7000N  SCANNER SECTION  D – 4
7)
Remove the screws (H), and remove the support plate (I). Dis-
connect the connector (J), and remove the snap band (K).
8)
Disconnect the connector (L), and remove the screws (M), and
remove the air outlet duct (N).
9)
Remove the screws (O), and remove the scanner unit (P).
a. Table glass, SPF glass
1)
Loosen the screws (A), and lower the angle adjustment plate
(B). 
2)
Open the DSPF unit (C).
H
H
I
I
H
H
J
K
M
L
N
M
P
O
O
1
Unit
Parts
Mainte
nance
1
Scanner unit
a
Table glass
{
b
SPF  glass
{
1-a
1-b
A
A
B
C
MX-7000N  SCANNER SECTION  D – 5
3)
Remove the screws (D), and remove the glass holder (E).
Remove the table glass (F). Remove the screws (G), and
remove the SPF glass (H).
b. Lens, CCD
1)
Remove the table glass and the SPF glass. (Refer to the "a.
Table glass, SPF glass".)
2)
Remove the screws (A), the earth wire (B), and remove the
dark box (C). Remove the lens cover (D).
3)
Clean the lens (E) and the CCD (F).
c. Reflector, Mirror, Scanner lamp, CL inverter PWB
1)
Remove the table glass and the SPF glass. (Refer to the "a.
Table glass, SPF glass".)
2)
Clean the reflector (A) and mirror (B).
Unit
Parts
Mainte
nance
1
Scanner unit
c
Lens
{
d
CCD
{
H
1-a
F
D
D
E
1-b
G
G
1-c
1-d
A
B
A
C
D
Unit
Parts
Mainte
nance
1
Scanner unit
e
Reflector
{
f
Mirror
{
g
Scanner lamp
{
h
CL inverter PWB
E
F
1-c
1-d
1-f
1-f
1-e 1-h
1-g
1-f
1-e
B
A

Download Sharp MX-5500N / MX-6200N / MX-7000N (serv.man56) Service Manual (Repair Manual)

Here you can view online or download Sharp MX-5500N / MX-6200N / MX-7000N (serv.man56) Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sharp MX-5500N / MX-6200N / MX-7000N (serv.man56) Copying Equipment. Information contained in Sharp MX-5500N / MX-6200N / MX-7000N (serv.man56) service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).