Sharp MX-6240N / MX-7040N (serv.man32) Service Manual ▷ View online
MX-7040N OPERATIONAL DESCRIPTIONS 13 – 9
3. Scanner section
A. Electrical and mechanical relation diagram
Signal name
Name
Function/Operation
CLFM
Scanner cooling fan
Cools the scanner unit.
CLI
Scanner lamp
Radiates light onto a document for the CCD to scan the document image.
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
CCD PWB
Scans document images and performs A/D conversion of the scanning signal.
2
SCU PWB
Controls the scanner and the operation section.
3
Scanner lamp drive PWB
Drives the scanner lamp.
4
Lens
Shrinking the image (light) of the document, and project it on CCD.
5
No. 1 mirror
Reflects the document image into the lens.
6
No. 2 mirror
7
No. 3 mirror
8
Reflector
Converges scanner lamp lights to radiate onto the document.
MHPS
CLFM
CLI
MIM
LED DRIVER
PWB
PWB
SCN CNT PWB
EHR-3
33
22
11
MHPS
D-GND
5V
PHR-4
PHR-4
2
3
1
4
B4B-PH-K-S
CN-2
MIM_B
MIM_A
MIM_/B
MIM_/A
CN-1
B3B-P
ASK-1
P
AP-03V
-S
SMP-03V
-NC
SMR-03V
-N
1
2
3
2
3
1
GND
CN_OCF
AN_LOCK
OCF
AN_PO
WER
2
3
1
4
MIM_B
MIM_A
MIM_/B
MIM_/A
B4B-PH-SM4-TB
GND
CN_AFE_SDO
AFE_SDT
O
AFE_SCLK
AFE_CS
nRES_CCD
AD
A3.3V
A3.3V
A3.3V
A3.3V
A3.3V
A3.3V
GND
GND
GND
A5V
A5V
A5V
A10V
A10V
CN_T
A_N
CN_T
A_P
GND
GND
GND
GND
GND
CN_TB_N
CN_TB_P
CN_TC_N
CN_TC_P
CN_TCLK_N
CN_TCLK_P
CN_TD_N
CN_TD_P
GND
CN_TE_N
CN_TE_P
GND
SCNCNT_SE2
SCNCNT_SE1
GND
GND
GND
GND
GND
GND
GND
GND
GND
10
9
8
7
6
5
4
3
2
1
20
19
18
17
16
15
14
13
12
11
30
29
28
27
26
25
24
23
22
21
39
38
37
36
35
34
33
32
31
42
43
44
45
46
47
48
41
40
49
50
FH48-50S-0.5SV
CN-1011
10
9
8
7
6
5
4
3
2
1
20
19
18
17
16
15
14
13
12
11
30
29
28
27
26
25
24
23
22
21
39
38
37
36
35
34
33
32
31
42
43
44
45
46
47
48
41
40
49
50
GND
CN_AFE_SDO
AFE_SDT
O
AFE_SCLK
AFE_CS
nRES_CCD
AD
A3.3V
A3.3V
A3.3V
A3.3V
A3.3V
A3.3V
GND
GND
GND
A5V
A5V
A5V
A10V
A10V
CN_T
A_N
CN_T
A_P
GND
GND
GND
GND
GND
CN_TB_N
CN_TB_P
CN_TC_N
CN_TC_P
CN_TCLK_N
CN_TCLK_P
CN_TD_N
CN_TD_P
GND
CN_TE_N
CN_TE_P
GND
SCNCNT_SE2
SCNCNT_SE1
GND
GND
GND
GND
GND
GND
GND
GND
GND
FH48-50S-0.5SV
CN-1
CCD PWB
PHR-3
B3B-PH-K-S
CN-17
MHPS
2
3
1
5VPD
GND
GND
CN_OCF
AN_LOCK
OCF
AN_PO
WER
2
3
1
3
2
5
4
1
5597-05CPB7F
CN
-7
24VPD
24VPD
LAMP
GND
GND
5
2
3
4
1
CN-8
5
597
-05APB
24VPD
24VPD
LAMP
GND
GND
4
7
2
3
1
5
6
8
B8B-PH-K-S
IDR
V7
IDR
V1
IDR
V2
IDR
V3
IDR
V5
IDR
V6
IDR
V4
24V
PHR-8
PHR-8
B8B-PH-K-S
2
3
4
5
6
1
7
8
IDR
V1
IDR
V2
IDR
V3
IDR
V5
IDR
V6
IDR
V4
IDR
V7
24V
3
5
6
7
1
2
4
MX-7040N OPERATIONAL DESCRIPTIONS 13 – 10
B. Operational descriptions
(1)
Outline
This section performs the following functions.
1)
Light is radiated to the document by the scanner lamp, and the
contrast of the reflected light is read by the CCD elements of
three lines of RGB to be converted into the image signal (ana-
log).
contrast of the reflected light is read by the CCD elements of
three lines of RGB to be converted into the image signal (ana-
log).
2)
The image signals (analog) are converted into 10bit digital sig-
nals by the A/D converter.
nals by the A/D converter.
3)
The image signals (digital) are sent to the image process sec-
tion (scanner control PWB).
tion (scanner control PWB).
(2)
Detail description
a. 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.
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.
the scanner control PWB.
b. 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.
generated in the CL inverter PWB according to the control signal
sent from the scanner control PWB.
c. Image scan/color separation
Light is radiated to the document by the scanner lamp, and the con-
trast of the reflected light is read by the CCD elements of three
lines of RGB to be converted into the image signal (analog).
trast of the reflected light is read by the CCD elements of three
lines of RGB to be converted into the image signal (analog).
The color components of document images are extracted to R, G,
and B separately by the three kinds of CCD elements (R,G,B).
and B separately by the three kinds of CCD elements (R,G,B).
The red CCD extracts the red component of document images, the
green CCD green the components, and the blue CCD the blue
components. This operation is called the color separation.
green CCD green the components, and the blue CCD the blue
components. This operation is called the color separation.
The CCD unit looks like one unit, but it includes three kinds of CCD
elements, R, G, and B.
elements, R, G, and B.
The document scan in the main scanning direction is performed by
the CCD element. The document scan in the sub scanning direc-
tion is performed by shifting the scanner unit with the scanner
motor. Document images are optically reduced by the lens and
reflected to the CCD.
the CCD element. The document scan in the sub scanning direc-
tion is performed by shifting the scanner unit with the scanner
motor. Document images are optically reduced by the lens and
reflected to the CCD.
The scan resolution is 600 dpi.
(Image data for 1 line)
d. Image signal A/D conversion
1)
The image signal (analog) for each of R, G, and B is converted
into 10bit digital signal by the A/D converter.
into 10bit digital signal by the A/D converter.
Each color pixel has 10bit information.
2)
The 10bit digital image signals of R, G, B are sent to the image
process section.
process section.
e. Zooming operation
Zooming in the sub scanning direction is performed by changing
the scanning speed in the sub scanning direction.
the scanning speed in the sub scanning direction.
Zooming in the main scanning direction is not performed optically,
but performed with the image process technology (by the software).
but performed with the image process technology (by the software).
B
R
G
R
G
B
R
G
B
Red component
image data
image data
Green component
image data
image data
Blue component
image data
image data
CCD PWB
R
G
B
G
B
CCD
(6 Lines)
Analog IC
AFE ADC
LVDS
Buffer
Timing
Generator
MX-7040N OPERATIONAL DESCRIPTIONS 13 – 11
4. Paper feed section
A. Electrical and mechanical relation diagram
(1)
Manual paper feed section
3
2
1
4
5
6
MPWD
MPED
MPGS
MPLD1
MPFS
CPFM
MPUC
LCCC
MPFD
PNDP-26V-Z
VHR-2N
PAP-07V-S
B2B-VH
2
P-GND
1
INT24V2L
B7B-PASK-1
7
5
6
6
4
3
2
1
CPFM_GAIN
CPFM_CW/CCW
D-GND
CPFM_D
5VN
CPFM_CK
CPFM_LD
CPFM_LD
2
4
6
8
4
6
8
10
12
14
16
18
12
14
16
18
INT24V2L
P-GND
P-GND
CPFM_LD
CPFM_D
CPFM_CK
CPFM_CK
CPFM_GAIN
5VN
CPFM_CW/CCW
GND
CN-15(2/2)
B26B-PNDZS
PCU PWB
MPUC
24V4
24V4
1
2
2
1
2
2
SMR-04V-NSMP-04V-NC
1
1
2
2
MPUC
24V4
24V4
1
3
3
MPUC
B40B-PNDZS
CN-10
SMP-02V-NC
SMR-02V-N
24V4
3
4
4
3
4
4
SMR-04V-NSMP-04V-NC
1
1
2
2
24V4
SMR-02V-N
LCCC
LCCC
SMP-02V-BC
2
4
4
24V4
24V4
LCCC
2
To High
voltage
voltage
PNDP-38V-Z
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
QR/P4-40*-C(01)
33
34
35
34
35
40
33
34
35
34
35
40
S
P
FG
+24V
+24V
+24V
+24V
+24V
+24V
24V4
24V4
MPFS
MPFS
MPGS
FPRFM2_LD
FPRFM2_V
FPRFM1_V
MPFD
MPWD
ADUM2_B
ADUM2_A
ADUM2_XB
ADUM2_XA
ADUM1_B
ADUM1_A
ADUM1_XB
ADUM1_XA
ADUGS
24V4
PRTPD
5VO+R
MPFD
MPWD
ADUM2_B
ADUM2_A
ADUM2_XB
ADUM2_XA
ADUM1_B
ADUM1_A
ADUM1_XB
ADUM1_XA
ADUGS
24V4
PRTPD
5VO+R
5VNPD
POD3
APPD2
APPD1
SELIN3
SELIN2
SELIN1
SIN3
GND
5VN
SRA-21T-4
3
12
1
5
7
9
7
9
11
13
15
17
19
21
23
25
27
29
13
15
17
19
21
23
25
27
29
5VO+R
PRTPD
5VNPD
5VN
GND
SIN3
SELIN1
SELIN2
SELIN3
APPD1
APPD2
PRTPD
5VNPD
5VN
GND
SIN3
SELIN1
SELIN2
SELIN3
APPD1
APPD2
POD3
MPFD
MPFD
MPWD
FPRFM2_LD
FPRFM2_LD
B38B-PNDZS
CN-12(1/2)
8
10
14
16
18
20
22
16
18
20
22
24V4
MPFS
MPGS
MPGS
FPRFM1_V
FPRFM2_V
FPRFM2_V
ADUGS
24V4
24V4
38
24
26
28
30
32
26
28
30
32
36
34
GND
INT24V2
INT24V2
PTC_ERR
2TC_ERR
2TC_ERR
HY_REM_TC2
/TC2_LD
/TC2_CLK
/TC2_DATA
/TC2_CLK
/TC2_DATA
2
4
6
4
6
TBFM_V
TBFM_LD
GND
TBFM_LD
GND
SRA-01T-3.2
(NC)
(NC)
(NC)
(NC)
(NC)
(NC)
(NC)
(NC)
PHDR-16VS-2
1
3
2
4
5
6
7
8
9
5
6
7
8
9
10
11
12
13
14
15
16
11
12
13
14
15
16
S16B-PHDSS-B
5VNPD
POD3
5VN
GND
SIN3
SELIN1
SELIN2
SELIN3
APPD1
APPD2
ADUD3
GND
SIN3
SELIN1
SELIN2
SELIN3
APPD1
APPD2
ADUD3
R-DOOR I/F PWB
21
20
19
18
17
16
15
14
13
12
11
10
20
19
18
17
16
15
14
13
12
11
10
9
8
7
8
7
(
NC)
(
NC)
(NC)
MPED
D-GND
D-GND
5VN
MPLD1
D-GND
D-GND
ADFM1_LD
ADFM1_LD
PHDR-32VS-1
S32B-PHDSS-B
CN-1
CN-3
MPFD
FAX_D
MPWD
FAX_D
MPWD
HUM_D
TH_M
D-GND
MPFD
MPWD
5V_LED
5V_LED
5V_LED
5V_LED
D-GND
MPLD1
5V_LED
1
3
2
2
D-GND
5VN
MPWD
MPWD
179228-3
PHR-3
1
2
3
4
5
6 D-GND
2
3
4
5
6 D-GND
VN
D-GND
MPLD1
5V_LED
1
2
3
4
5
6
2
3
4
5
6
SMR-06V-N
MPWD
SMP-06V-NC
5
1
3
2
2
SMR-02V-N
2
D-GND
3
1
5V_LED
MPED
2
D-GND
3
1
5V_LED
MPFD
SMP-02V-NC
1
2
2
1
/MPFS
2
24V4
1
10
9
8
7
2
3
4
5
6
3
4
5
6
1
2
5
6
8
9
10
4
3
3
7
D-GND
MPFD
/MPGS
MPFD
/MPGS
/MPFS
D-GND
MPED
BU10P-TZ-S
5V_LED
5V_LED
24V4
V4
CZHR-10V-S
CZHR-10V-S
24
1
2
1
/MPGS
2
24V4
179228-3
179228-3
SMR-02V
-N
SMP-02V
-NC
Manual paper feed tray UN
Multi UN
MX-7040N OPERATIONAL DESCRIPTIONS 13 – 12
Signal name
Name
Function/Operation
CPFM
Paper feed motor
Drives the paper feed section.
LCCC
LCC paper entry clutch
Controls ON/OFF of the roller in the LCC transport section.
MPED
Manual feed paper empty detector
Detects presence of paper in the manual paper feed tray.
MPFD
Manual feed paper entry detector
Detects entry of paper into the manual paper feed tray.
MPFS
Paper pickup solenoid (Manual paper feed)
Controls pickup of paper. (Manual paper feed)
MPGS
Manual paper feed gate solenoid
Controls open/close of the manual paper feed gate.
MPLD1
Manual paper feed length detector
Detects the manual paper feed tray paper length.
MPUC
Manual paper feed clutch
Controls ON/OFF of the paper feed roller in the manual paper feed section.
MPWD
Manual paper feed tray paper width detector
Detects the manual paper feed tray paper width.
No.
Name
Function/Operation
1
Paper feed roller (Manual paper feed tray)
Feeds paper to the paper transport section.
2
Separation roller (Manual paper feed tray)
Separates paper to prevent double feed.
3
Paper pickup roller (Manual paper feed tray)
Picks up paper to send to the paper feed roller.
4
Torque limiter
A certain level of resistance force is supplied to the rotation of the separation roller to prevent
double feed.
double feed.
5
Transport roller 8 (Drive)
Transports paper fed from the manual paper feed tray to the transport roller 16.
6
Transport roller 14 (Drive)
Transports paper fed from the LCC to the transport roller 15.
Click on the first or last page to see other MX-6240N / MX-7040N (serv.man32) service manuals if exist.