Sharp Mx 2300n Service Manual

							MX-2300/2700 N/G  MANUAL PAPER FEED SECTION  D – 4 5) Manual paper feed tray paper width detector
e. Manual feed paper length detector
1) Remove the manual paper feed tray unit.
2) Remove the MF tray 2.
3) Remove the MF tray 2 lower.
4) Manual feed paper length detector
(2) Manual paper feed unit
1) Open the right door unit.
2) Remove the manual paper feed tray unit.
3) Disconnect the connector, and remove the manual paper feed
unit.a. Paper pickup roller
b. Paper feed roller
1) Remove the MF pickup cover.
2) Remove the paper pickup roller (A) and the paper feed roller
(B).
c. Separation roller
1) Remove the MF pickup cover.
2) Remove the paper pickup roller and the paper feed roller.
3) Open the MF lower maintenance cover, remove the separation
roller.
AB
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2 
						

							MX-2300/2700 N/G  MANUAL PAPER FEED SECTION  D – 5 d. Manual paper feed gate solenoid
1) Remove the manual paper feed unit.
2) Remove the MF base guide supporting plate and the spring.
3) Disconnect the connector, and disengage the pawl. Remove
the manual paper feed gate solenoid.
e. Transport roller 12 (Drive)
1) Remove the manual paper feed unit.
2) Remove the MF base guide supporting plate and the spring.
3) Remove the parts, and remove the transport roller 12 (Drive).f. Manual feed paper entry detection 
1) Remove the manual paper feed unit.
2) Remove the MF base guide supporting plate and the spring.
3) Remove the transport roller 12 (Drive).
4) Disconnect the connector, and remove the MF front plate.
Remove the transport roller 7 (Idle) unit.
5) Disconnect the connector, and remove the sensor mounting
plate.
g. Torque limiter
1) Remove the manual paper feed unit.
2) Remove the MF base guide supporting plate and the spring.
3) Remove the transport roller 12 (Drive).
4) Remove the parts, and remove the MF drive plate.
1
1
2
2
1
1
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							MX-2300/2700 N/G  MANUAL PAPER FEED SECTION  D – 6 5) Remove the E-ring. Remove the shaft and remove the torque
limiter.
h. Manual feed paper empty detection 
1) Remove the manual paper feed unit.
2) Remove the MF pickup cover and the MFADU paper guide.
3) Disconnect the connector, and remove the sensor mounting
plate.i. Paper pickup solenoid
1) Remove the manual paper feed unit.
2) Remove the MF base guide supporting plate and the spring.
3) Remove the transport roller 12 (Drive).
4) Remove the MF drive plate.
5) Remove the MF front plate. 
6) Remove the MF upper base paper guide unit.
7) Remove the MF upper guide supporting plate.
8) Remove the paper pickup solenoid.
1
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1
2
2
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							MX-2300/2700 N/G  MANUAL PAPER FEED SECTION  D – 7
4. Maintenance
✕: Check (Clean, replace, or adjust according to necessity.) {: Clean ▲: Replace U: Adjust ✩: Lubricate †: Shif the position.
No. Parts nameMonochrome 
supply, 
mechanical 
pa rtsWhen 
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 Pickup roller Mechanism 
parts{ {{{{{{{{{ { { {(P/G No.: [16]-33)
2 Paper feed roller{ {{{{{{{{{ { { {(P/G No.: [16]-29)
3 Separation roller{ {{{{{{{{{ { { {(P/G No.: [15]-37)
4 Torque limiter✕ ✕✕✕✕✕✕✕✕✕ ✕ ✕ ✕
5 Transport rollers{ {{{{{{{{{ { { {
4
5
12
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							MX-2300/2700 N/G  TRAY PAPER FEED SECTION  E – 1 MX2700N
Service Manual [E] TRAY PAPER FEED SECTION
1. Electrical and mechanism relation diagram
PHNR-12-H+
P DF1B-24p
S CN6
BU12P-TR-P-H
B24B-PHDSS-B
CN4
S4P-PH-K-SS4P-PH-K-S
PHNR-9-H+
BU09P-TR-P-H
B30B-PHDSS-B5VNPD 3D-GND 1
2 CPED2 14 CPWD22 14 CPWD22 244
6
10
12 CPWD21 1210 CSPD24 CLUD2 20
22
24
2 19
21
23
187
16
179
11
13
15
22 CSS23
6 CPED224 CSS24
2 CPFD218 CSS21
20 CSS2221 CSS13
23 CSS1417 CSS11
19 CSS1215 CSS1
16 CSS211 CPWD11
13 CPWD127 DSW_R
9 CSPD1
18 CSS24
22 CPWD216 CPED2
8 CSPD24 CLUD217 CSS1313 CSS11
15 CSS1211 CSS1
10 CSS27 DSW_R
9 CSPD1
2 CPFD219 CSS14
12 CSS21
14 CSS22
16 CSS2321 CPWD11
23 CPWD12
5VNPD 26
11 D-GND 9
D-GND2 18
5VN 21 5VNPD
5VNPD 2319 D-GND 3
5VN 20
D-GND 1
D-GND
D-GND 5
5VNPD 22
D-GND 8 D-GND 65VN 24 D-GND 710
11
12
D-GND1
2
3
D-GND 4 5VNPD5VNPD
10
7D-GND
6 3
4
5D-GND
CPED2CPFD2
CLUD2CSPD1
5VN
2 8
9
D-GND
11 3
92
5VN 3
1
2D-GND 1
D-GND
1 D-GND
3D-GND
5VNPD 1
2 CSPD2D-GND
DSW_R
5VN
D-GND 3
2
1 D-GND
CPFD1
5VN
D-GND6
8
7 5
4
12
4 9
1
D-GND 3
5
611
CPED1
5VNPDCLUD1 2
10
9 5VNPD5VN 3
CPFD2 21
2
3D-GND
CPED1
5VNPD 1
2D-GND
CPFD1 7 1 CPFD1
3 CLUD1 1
3 1 CPFD1
8 5 CPED1 5 3 CLUD1
5 CPED1
6 8
7
DRIVER
MAIN PWB
5VNPD5
4 5VNPD
5VNPD 25
PCU
25VN 3D-GND 1
2DSW_R
CSS1
CSS2
5VNPD 3D-GND 1
2CLUD2
1
2
3D-GND
CLUD1
5VNPD
CN17
B7P-PH-K-S PHNR-2-H
BU02P-TR-P-HPHNR-2-H
BU02P-TR-P-HPHNR-2-H
BU02P-TR-P-H R
SM18P
P
B32B-PHDSS-B CN9
B2P-PH-K-S 3
INT24V2
B3P-PH-K-SB2P-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
2 12 1
/CPUC211 24V3 12
1
INT24V2 1 1
2
P-GND 212 13
2
/CPUC124V3
/CPFC1 2 24V31 1 2
2
/CPUC224V3 11 2
P-GND/CLUM2
1 2
P-GND /CLUM1
1 2 3
4 5
6 7
INT24V2P-GND FG-OUT
/CPFM_CK/CPFM_D CPFM_LD5V
PCU PWBAC PWB
CPED1
1 24
CLUD1
CLUD2CPFD1DSW_RCPFM
CPUC1
CPFCCLUM1
CLUM2
CPUC2
CPFD2 CPED2
CSS2
CSPD2 CSS1
CSPD1
3
5 67
8
10
9
11
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							MX-2300/2700 N/G  TRAY PAPER FEED SECTION  E – 2
Signal name Name Function/Operation
CLUD1 Tray 1 upper limit detection (Lift HP detection) Tray 1 upper limit detection
CLUD2 Tray 2 upper limit detection (Lift HP detection) Tray 2 upper limit detection
CLUM1 Paper tray lift-up motor (Paper feed tray 1) Drives the paper tray lift plate.
CLUM2 Paper tray lift-up motor (Paper feed tray 2) Drives the paper tray lift plate.
CPED 1 Tray 1 paper empty detection Tray 1 paper empty detection
CPED 2 Tray 2 paper empty detection Tray 2 paper empty detection
CPFC Tray vertical transport clutch
CPFD1 Tray 1 transport detection (Paper entry detection) Tray 1 paper pass detection
CPFD2 Tray 2 transport detection (Paper entry detection) Tray2 paper pass detection
CPFM Paper feed motor Paper feed section drive
CPUC1 Paper feed clutch (Paper feed tray 1) Controls the paper feed tray section roller ON/OFF.
CPUC2 Paper feed clutch (Paper feed tray 2) Controls the paper feed tray section roller ON/OFF.
CSPD1 Tray 1 paper remaining quantity detection Tray 1 paper remaining quantity detection
CSPD2 Tray 2 paper remaining quantity detection Tray 2 paper remaining quantity detection
CSS1 Tray 1 presence detection Detects the presence of the tray 1
CSS2 Tray 2 presence detection Detects the presence of the tray 2
DSW_C Tray 1, 2 transfer cover open/close detection Detects opening of the tray 1, 2 transport cover.
No. Name Function/Operation
1 Paper feed roller (No.1 paper feed tray) Feeds paper to the paper transport section.
2 Paper pickup roller (No. 1 paper feed tray) Feeds paper to the paper feed roller.
3 Separation roller (No. 1 paper feed tray) Separates paper to prevent Double Feed.
4 Torque limiter A certain  level of resistance force is supplied to the rotation of the separation 
roller to prevent double feed.
5 Paper feed roller (No. 1 paper feed tray) Feeds paper to the paper transport section.
6 Paper pickup roller (No. 2 paper feed tray) Feeds paper to the paper feed roller.
7 Separation roller (No. 2 paper feed tray) Separates paper to prevent Double Feed.
8 Transport roller 4 (Drive) Transports the paper transported from the transport roller 1 and paper feed roller 
(No. 2 paper feed tray) to the transport roller 7.
9 Transport roller 5 (Drive) Transports the paper fed from the paper tray 1 to the transport roller 7.
10 Transport roller 7 (Drive) Transports the paper fed from the paper feed tray 1, 2 or 3, 4 to the transport 
roller 8.
11 Rotation plate Lifts up the paper to keep the paper feed position. 
						

							MX-2300/2700 N/G  TRAY PAPER FEED SECTION  E – 3
2. Operational descriptions
A. Preliminary operation before paper feed
• When the paper is set and the paper feed tray is inserted, the
pickup roller moves down and the paper feed tray sensor turns
ON.
• The lift-up motor operates to lift the rotating plate.
• The paper upper limit sensor turns on to stop the rotating plate at
the specified position.
B. Paper feed operation
• When copy/print operation is started, the motor and the clutch
are turned ON and the pickup roller is rotated in the paper pickup
timing to feed paper.
• At the same time, the paper feed roller rotates to feed paper to
the transport section. At that time, the separation roller rotates to
prevent against double feed of paper.
C. Remaining paper detection
• Remaining paper detection is performed according to four
stages, i.e. three stages with paper and one stage with no paper,
and the result is displayed.
D. Remaining paper detection method
• The number of remaining sheets is determined according to the
number of times the remaining paper sensor changes from the
time the paper feed tray starts lifting up to the time when the
upper detection sensor comes ON.
The no-paper detection sensor detects
the state of no remaining paper.
1/3 Field
Sensor logic: Low
2/3 Field
Sensor logic: Hi
3/3 Field
Sensor logic: Low
During no-paper detection
Remaining paper 1/3 position
Remaining paper 2/3 position
Remaining paper 1/3 position
Turn plate CPED
(paper sensor)
Remaining Paper
Detection Actuator
CSPD
(remaining paper detection)
(Figure showing state transition of the remaining paper detection sensor during tray elevation and
changes in status according to the number of remaining sheets) 
						

							MX-2300/2700 N/G  TRAY PAPER FEED SECTION  E – 4
3. Disassembly and assembly
A. Tray paper feed section
(1) Remove the tray paper feed unit 1 and 2.
1) Remove the right cabinet front.
2) Remove the tray 1 and 2.
3) Remove the right lower door unit.
4) Remove the paper feed movable PG lower.
5) Remove the paper feed unit 1, 2.
Unit Parts Maintenance
(1) Tray paper 
feed unit 1, 2a Paper pickup roller✕{
b Paper feed roller✕{
c Separation roller✕{
d Tray 1 transport cover 
detection
e Transport roller 7 (Drive)✕{
f Transport roller 4 (Drive)✕{
g Torque limiter✕
h Tray 1, 2 paper presence 
detection
i Tray 1, 2 upper limit detection
j Tray 1, 2 transport detection
k Transport roller 5 (Drive)✕{
(2) Others a Tray 1, 2 paper remaining 
quantity detection
b Tray 1, 2 presence detection
(1)
(1)
(1)-a
(1)-b
(1)-c
(1)-j
(1)-g
(1)-e
(1)-d (1)-k
(1)-a
(1)-h(1)-i
(1)-c
(1)-b
(1)-j(1)-g
(1)-f
(1)-h
(1)-i
(2)-b
(2)-a
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							MX-2300/2700 N/G  TRAY PAPER FEED SECTION  E – 5 a. Paper pickup roller
b. Paper feed roller
1) Remove the tray 1 and 2.
2) Remove the paper guide.
3) Remove the paper pickup roller (a) and the paper feed roller
(b).
c. Separation roller
1) Remove the tray 1 and 2.
2) Remove the paper guide.
3) Remove the separation roller.d. Tray 1 transport cover opening detection
1) Remove the tray paper feed unit 1.
e. Transport roller 7 (Drive)
1) Remove the tray paper feed unit 1.
2) Remove the screws.
3) Remove the paper feed reverse PG unit, and remove the belt.
4) Remove the grounding plate. Remove the parts. Remove the
transport roller 7 (drive).
a
b
1
2
1
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							MX-2300/2700 N/G  TRAY PAPER FEED SECTION  E – 6 f. Transport roller 4 (Drive)
1) Remove the tray paper feed unit 2.
2) Remove the grounding plate. Remove the parts. Remove the
transport roller 4 (drive).
g. Torque limiter
1) Remove the paper feed unit 1, 2.
2) Remove the E-ring and the bearing, and remove the paper
feed lower PG unit.
3) Remove the pressure release spring, and remove the paper
feed lower PG supporting plate. Remove the separation pres-
sure spring, and the separation pressure release plate.4) Remove the separation roller. Remove the E-ring and the sep-
aration shift. Remove the torque limiter.
h. Tray 1, 2 paper presence detection
i. Tray 1, 2 upper limit detection sensor
1) Remove the paper feed unit 1, 2.
2) Remove the paper feed reverse PG unit. (Tray paper feed unit
1 only)
3) Remove the paper feed vertical transport PG unit, then remove
the belt. (Tray paper feed unit 2 only)
4) Remove the paper feed upper PG supporting plate.
5) Remove the tray 1, 2 paper presence detector (a) and the tray
1, 2 upper limit detector (b).
12
2
3
1
2
1
2
3
1
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4
1
1
2
3
a
b