Sharp Mx 2300n Service Manual

							MX-2300/2700 N/G  SCANNER SECTION  C – 1 MX2700N
Service Manual [C] SCANNER SECTION
1. Electrical and mechanism relation diagram
Signal Name Function/Operation
CLI Scanner lamp Illuminates the document. (Xenon 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 Inducts the document image into the No.3 mirror.
6 No. 3 mirror Inducts the document image into the lens.
7 Lens Reduces the document image (light), and project it on CCD.
8 CCD PWB Reads the document image (optical signal) and converts it into the electric signal.
9 Idle gear Transmits the scanner motor power to the belt.
CN3501190-4017 CN1 501190-2017
CN148501190-4017 CN147 501190-2017 CN137CCD PWB
CCD_CLK1+
16
17
18
19
202
3 38
40 39 35
1 30
155
6
7
8
12
13
14 AD_MCLK-
AD_BLKCLPSH_OUT-AD_RDSICCD_CLK1-AGND
AGND
TC-
TE- AGND
AGND
AGND
AGND
TC+
TE+ AGND
AGND 34
36
37 32
33 CCD_SH31AD_MCLK+AD_CLPIN26
27
28
29 20
21
24
25 23/RES_CCDADCCD_CLK2-
22 AD_SCLK
CCD_CLK2+AD_WRSO
AGND
AD_SEN18
19 A3.3V
CCD_RS-/LVDS_STBYAGND 15
16
17 CCD_CP-
AGND
CCD_CP+
A5V
AGND
AGND
CCD_RS+ 11
12
13
147
8
9
101
2 AGND
AGND
A12V
5
6 3
4 AGND
9
10
114
AGND
AGNDCLKP1_OUT+SH_OUT+CLKP1_OUT-TB+
TD+
TB-
TD-
AGND
AGND
TA+
TCLK+
TA-
TCLK-
AGND
AGNDAGND
AGND
AGND
A12V
CCD_CP-
AGND
CCD_CP+
A5V
AGND
AGND
CCD_RS+
A3.3V
CCD_RS-
/LVDS_STBYAGND/RES_CCDADAD_RDSICCD_CLK1-CCD_CLK2-AD_SCLKCCD_CLK2+AD_WRSO
AGND
AGND
AD_CLPIN
AD_MCLK-AD_BLKCLPAD_MCLK+CCD_SH
AGND
AGNDCLKP1_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
401
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22CCD_CLK1+23AGND
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
5VMHPS
D-GND
5V
CL
INVERTOR
PWB
CN130
1 P-GND
P-GND
CL
24VPD
24VPD5
4
3
2
5P-GND
P-GND
CL
24VPD 1
2
3
4
24VPD
1
2
SCN-CNTPWB
8
4
3
7
5
6
2
9 
						

							MX-2300/2700 N/G  SCANNER SECTION  C – 2
2. Operational descriptions
A. Outline
This section functions and operates as follows:
1) The copy lamp radiates light onto the document, and the
reflected light is scanned by the three line (RGB) CCD element
and then 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) through the belt, the drive pulley, and the wire 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
Light is radiated to a document by the scanner lamp, and the
brightness of the reflected light is received by the three line (RGB)
CCD element and converted into (analog) image signals.
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.
The CCD element, appeared as one unit, but has three separate
rows of CCD elements drive each for (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 (256 gradations).
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 not performed optically
but by the image process technology (software).
B
RG
R
G
B
Red component of
image dataBlue component of
image data Green component of
image data
RGB
CCD PWB
Transfer IC
BADC
B
B
3
CCD
BIC
GIC
RIC
GADC
RADC
R
R
G
G 
						

							MX-2300/2700 N/G  SCANNER SECTION  C – 3
3. Disassembly and assembly
A. Optical system
(1) Scanner unit
1) Remove the upper cabinet rear cover and the upper cabinet
rear.
2) Remove the table glass and the SPF glass.
3) Remove the upper cabinet right and the upper cabinet left.
4) Disconnect the connector and remove the snap band.
5) Remove the screws, and remove the scanner unit.
a. Table glass
b. SPF glass
1) Remove the SPF glass (A). Remove the glass holder (B) and
the table glass (C).
Unit Parts Maintenance
(1) Scanner unit a Table glass{
b SPF glass{
c Lens{
d CCD{
e Reflector{
f Mirrors{
gLamp{
h CL inverter PWB
i CCD unit
j Scanner motor
k Scanner home position 
sensor
l Original cover SW
m Document detection light 
receiving PWB
n Document detection light 
emitting PWB
oRails✩
p Drive wire✕
qDrive belt✕
(1)-a (1)-o(1)-b
(1)-p (1)-h
(1)-g
(1)-p (1)-f
(1)-d (1)-f
(1)-e
(1)-c(1)-o
(1)-m
(1)-n
(1)-l
(1)-j (1)-k
(1)-q
(1)-i
(1)
1
23
A
BC 
						

							MX-2300/2700 N/G  SCANNER SECTION  C – 4 c. Lens
d. CCD
1) Remove the glass holder and the table glass.
2) Remove the dark box cover (A) and the lens cover (B).
3) Clean the lens (A) and CCD (B).
e. Reflector
f. Mirrors
1) Remove the glass holder and the table glass.
2) Shift the lamp unit and the mirror unit.
3) Clean the reflector and No. 2 and 3 mirrors.4) Shift the lamp unit to the right end. Loosen the screws and
remove the wire.
5) While rotating the lamp unit, lift the lamp unit. Remove the har-
ness holder and the flat cable. Remove the lamp unit.
6) Clean the mirrors.
g. Lamp
h. CL inverter PWB
1) Remove the table glass and the SPF glass.
2) Remove the lamp unit.
3) Disconnect the connector and remove the lamp.
A
B
A
B
2
2
1
3
2
1
3
2
1 
						

							MX-2300/2700 N/G  SCANNER SECTION  C – 5 4) Remove the CL inverter PWB.
i. CCD unit
1) Remove the dark box. Disconnect the connector and remove
the CCD unit.
j. Scanner motor
1) Remove the upper cabinet rear cover and the upper cabinet
rear.
2) Disconnect the connector, and remove the scanner motor.k. Scanner home position sensor
1) Remove the upper cabinet rear cover and the upper cabinet
rear.
2) Disconnect the connector, and remove the scanner home posi-
tion sensor.
l. Original cover SW
1) Remove the upper cabinet rear cover and the upper cabinet
rear.
2) Disconnect the connector, and remove the document cover
SW.
m. Document detection light receiving PWB
1) Remove the operation panel base plate.
2) Disconnect the connector and remove the document detection
light receiving PWB.
1
2
1
2 
						

							MX-2300/2700 N/G  SCANNER SECTION  C – 6
n. Document detection light emitting PWB
1) Remove the upper cabinet rear.
2) Remove the screws, and remove the light emitting unit.
3) Remove the document detection light emitting PWB
o. Railsp. Drive wire
q. Drive belt
* Install the drive wire in the sequence shown in the figure below.
Wind the drive wire 10 turns around the winding pulley.
The 9th turn must be fixed with a screw.
When moving the copy lamp unit manually for cleaning or adjusting
the scanner section and the mirror section, be sure to turn OFF the
main power source (the power switch inside the front cover) and
confirm that the power LED on the operation panel is OFF.
If the copy lamp unit is manually moved with the main power ON, the
trouble code F6-30 may occur.
If the trouble code F6-30 is not canceled by turning OFF/ON the
main power, refer to the Service Manual (FAX self diagnostics and
the trouble codes).
1
11089
1 10 89
2
2
3
3
4
4
5
5
6
6
7
7
1
1
: Dec. 15 20051 
						

							MX-2300/2700 N/G  SCANNER SECTION  C – 7
4. Maintenance
A. Optical Section
✕: Check (Clean, replace, or adjust according to necessity.) {: Clean ▲: Replace U: Adjust ✩: Lubricate †: Shif the position.
No. Parts nameMonochrome 
supply, 
mechanical partsWhen 
calling100
K200
K300
K400
K500
K600
K700
K800
K900
K1000
K11 0 0
K1200
KRemark/Refer to 
the Parts Guide. 
Block/Item No. 
(Only the 
replacement parts 
are described.)
1 Mirror/lens/
reflector/CCDMechanism parts{ {{{{{{{{{ { { {
2 Table glass/SPF 
glass{ {{{{{{{{{ { { {
3 Scanner lamp{ {{{{{{{{{ { { {
4 Rails✩ ✩✩✩✩✩✩✩✩✩ ✩ ✩ ✩Specified position
5 Drive belt/drive 
wire✕ ✕✕✕✕✕✕✕✕✕ ✕ ✕ ✕
4
2 42
4
3
55 1
1
14 
						

							MX-2300/2700 N/G  MANUAL PAPER FEED SECTION  D – 1 MX2700N
Service Manual [D] MANUAL PAPER FEED SECTION
1. Electrical and mechanism relation diagram
CN3(1/2)
S32B-PHDSS-B5VN
20 MPWD13 MPLD2
5VLED12MPLD16
18
19
5VLED13MTOP2
5VLED925 MTOP1
D-GND
31 28 5VN
29
14 27 24
MTOP1 6
22
14 13
1
TH_M
5VLED9 5
2D-GND 7
HUD_M1012 35VLED13
911 5VN 48
7 MTOP2
8 91 MPLD2 14
5 5VN
4 5VLED12 11
10
6 MPWD3 MPLD 12
RIGHT
DOOR I/F
PWB
TH_M HUD_M
DF11-8DP-SP1
8 6 7 2 4 5 3 1D-GND
D-GND
D-GND
D-GND
D-GND
D-GND
D-GND
D-GND
CN26
P QR/P4 32PIN S
B32B-PHDSS-B
PHNR-2-H + BU02P-TR-P-H
DF11-6DP-SP1
PHNR-8-H + BU08P-TR-P-Ha
PHNR-14-H + BU14P-TR-P-H PHNR-9-H + BU09P-TR-P-H CN3(2/2)
PHNR-5-H + BU05P-TR-P-H
DF11-6DP-SP2 24V3
31
/MPUC15
13 /MPGS
1
2
4
3
5
6
31
14 30
284 /MPFS
3
24V3
HPDET
5VLED77
8
9 D-GND/MPUC 5 15
14 30/MPGS
6 28
13/MPFS
24V3
24V3
8
1 MPFD 324V3 2/MPGS
5VLED7 4
3 3/MPGS
MPFD 124V3
4 5 2
5
D-GND 2 6 7 /MPFS 2
4
24V3 1
1 6 HPDET 3
5D-GND
4 5VLED7 5
10 MPFD 8
6
4
2
5
3
1
7
D-GND D-GND D-GND 5VLED7 5VLED7 5VLED7 24V3
24V3
24V3
24V3
24V3
24V3
4
6 5
1D-GND 5
8
9 D-GND
7 5VLED124
MPWD 3
25VNMPLD 63 5VLED12 1MPLD
2D-GND
3
25VN
1MPWD
D-GND
3MTOP2
D-GND
5VLED13 1
2
TH_M 1
2
3
45VN
HUD_M
D-GND 1
2
3MTOP1
D-GND
5VLED9
5VLED7MPFD
D-GND
3 1
2
RSM2P P
124V31
2/MPGS2
PSM2P R
21
2 24V3
/MPFS 1/MPUC 22
1 24V3 1
5VLED7D-GND HPDET 1
2
3
CN17
B7P-PH-K-S R
SM18P
P
B32B-PHDSS-B CN9
3
INT24V2
B3P-PH-K-S
P-GND8 /CLUM2
/CPUC16 /CLUM1
14
15/CLUM216
9
24V312 24V3
11 /CPFC10
2 CPFM_LD8
24V3 8
57
/CPFC 7
P-GND4 /CPFM_CK/CPFM_D5
3
/CPFM_CK 34
/CPFM_D 45
CPFM_LD9
/CPUC1 924V310
10P-GND /CLUM1P-GND
14 15
15 16
7 P-GND
13 14
1311 /CPUC224V3
/CPUC211 24V3 12
1
INT24V2 1 1
2
P-GND 212 13
1 2 3
4 5 6 7
INT24V2P-GND FG-OUT
/CPFM_CK/CPFM_D CPFM_LD5V
PCU PWBAC PWB
CN1
B6B-PH-K-S6 13
4 PSFMB/ PSFMB//2
PSFMA/
INT24V15 INT24V1 PSFMA//
INT24V1 5PSFMB// 3
PSFMB/ 6PSFMA/ 4 1
INT24V1 2PSFMA//
DRIVER
MAIN PWB
MPLD MPWD
MTOP2 MTOP1TH_D/HUD_M
MPED3 MPFDMPFS
MPGSCPFM
MPUCPFM
2
14
5 
						

							MX-2300/2700 N/G  MANUAL PAPER FEED SECTION  D – 2
2. Operational descriptions
The paper pickup roller moves up and down to press paper and
separates the top paper, which is fed to the paper feed roller.
The paper feed roller feeds paper to the paper transport section,
and the separation roller prevents double feed.. ON/OFF control of
the pickup roller and the paper feed roller is made by the manual
paper feed clutch. Paper is transported to the resist roller by the
manual paper transport roller. 
3. Disassembly and assembly
A. Manual paper feed section
Signal name Name Function/Operation
CPFM Paper feed motor Paper feed section drive
MPED Manual feed paper empty detection  Manual paper feed tray paper empty detection
MPFD Manual feed paper entry detection  Manual paper feed tray paper empty detection
MPDS Paper pickup solenoid Paper pickup solenoid (Manual paper feed)
MPGS Manual paper feed gate solenoid Controls the manual paper feed gate solenoid Open/Close.
MPLD Manual feed paper length detector Manual paper feed tray paper length detection
MPUC Manual paper feed clutch Controls the manual paper feed section paper feed roller ON/OFF.
MPWD Manual paper feed tray paper width detector Manual paper feed tray paper width detection
MTOP1 Manual paper feed tray pull-out position detector 1 Manual paper feed tray paper pull-out position detection (storage position)
MTOP2 Manual paper feed tray pull-out position detector 2 Manual paper feed tray paper pull-out position detection (pulling-out position)
PFM Transport motor Transport drive between the resist roller and the paper feed section. Transport drive 
between the resist roller and the right door section.
TH_M/HUD_M Temperature/humidity detection Detects temperature/humidity.
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) Feeds paper 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.
5 Transport roller 12 (Drive) Transports paper transported from the transport roller 11 to the transport roller 8.
Transports paper fed from the manual feed tray to the transport roller 8.
Unit Parts Maintenance
(1) Manual 
paper feed 
tray unita Temperature/humidity sensors
b Manual paper feed tray pull-out 
position detector 1
c Manual paper feed tray pull-out 
position detector 2
d Manual paper feed tray paper 
width detector
e Manual feed paper length 
detector
(2) Manual 
paper feed 
unita Paper pickup roller✕{
b Paper feed roller✕{
c Separation roller✕{
d Manual paper feed gate 
solenoid
e Transport roller 12 (Drive)
f Manual feed paper entry 
detection 
g Torque limiter✕
h Manual feed paper empty 
detection 
i Paper pickup solenoid
(1)(2)-a
(1)-a (2)-b
(1)-b
(1)-c(2)-c
(1)-d (2)-d
(1)-e (2)-e
(2)-f (2)-i (2)
(2)-g
(2)-h 
						

							MX-2300/2700 N/G  MANUAL PAPER FEED SECTION  D – 3
(1) Manual paper feed tray unit
1) Open the right door unit.
2) Remove the screws, and remove the connector cover.
Remove the screws, then remove the ADU inner cover.
3) Remove the ADU cabinet F and the ADU cabinet R.
4) Remove the MF harness cover and disconnect the connector.5) Remove the MF tray installing shaft, and remove the manual
paper feed tray unit.
a. Temperature/humidity sensors
b. Manual paper feed tray pull-out position detector 1
c. Manual paper feed tray pull-out position detector 2
d. Manual paper feed tray paper width detector
1) Remove the manual paper feed tray unit.
2) Remove the MF tray upper inside cover.
3) Disengage the pawl. Lift the MF tray upper and the MF tray 2,
and disconnect the connector.
4) Temperature/humidity sensor (A), manual paper feed tray pull-
out position detector 1 (B), manual paper feed tray pull-out
position detector 2 (C)
1
2
1
2
1
3
2
A
B
C