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Model
MX-3050N MX-3060N MX-3070N MX-3550N MX-3560N MX-3570N MX-4050N MX-4060N MX-4070N (serv.man5)
Pages
127
Size
105.17 MB
Type
PDF
Document
Service Manual
Brand
Device
Copying Equipment / Service Manual (Revised November 2017).
File
mx-3050n-mx-3060n-mx-3070n-mx-3550n-mx-3560n-mx-35.pdf
Date

Sharp MX-3050N / MX-3060N / MX-3070N / MX-3550N / MX-3560N / MX-3570N / MX-4050N / MX-4060N / MX-4070N (serv.man5) Service Manual ▷ View online

MX-4070N  EXTERNAL VIEW AND INTERNAL STRUCTURE  4 – 15
8. Switches
Signal name
Name
Type
Function and Operation
DSW_F
Front door open/close switch
Micro switch
Detects open/close of the front door. Detects ON/OFF of the power line of 
the fusing unit, the motors, and the LSU laser.
DSW_R
Right transport unit (right door) open/close 
switch
Micro switch
Detects open/close of the right paper transport section (right door). Detects 
ON/OFF of the power line of the fusing unit, the motors, and LSU laser.
MSW
Main power switch
Seesaw switch
Turns ON/OFF the main power.
DSW_F
DSW_R
MSW
MX-4070N  EXTERNAL VIEW AND INTERNAL STRUCTURE  4 – 16
9. Clutches and solenoids
Signal name
Name
Type
Function and Operation
1TURC_1
Primary transfer separation clutch 1
Magnetic clutch
Controls separation of the primary transfer unit
1TURC_2
Primary transfer separation clutch 2
Magnetic clutch
Controls separation of the primary transfer unit
2TURC
Secondary transfer separation clutch
Magnetic clutch
Controls separation of the secondary transfer unit
ADUGS
ADU gate solenoid
Magnetic solenoid
Controls the paper exit gate
CPFC1
Tray vertical transport clutch
Magnetic clutch
Controls the transport roller of the paper feed tray 1 section
C1PUC
Paper feed clutch (Paper feed tray 1)
Magnetic clutch
Controls ON/OFF of the paper feed roller in the paper feed tray 1 
section (Paper feed tray 1)
HPFC
Horizontal transport clutch (Paper feed tray 1, 
Manual paper feed tray)
Magnetic clutch
Controls ON/OFF of the transport roller (Paper feed tray 1, Manual 
paper feed tray)
MPUC
Manual paper feed clutch (Manual paper feed tray)
Magnetic clutch
Controls ON/OFF of the paper feed roller in the manual paper feed 
section (Manual paper feed tray)
MPFS
Paper feed solenoid (Manual paper feed tray)
Magnetic solenoid
Controls the paper feed roller (Manual paper feed tray)
POGS
Gate solenoid
Magnetic solenoid
Controls ON/OFF of the gate solenoid selecting upper tray and 
lower tray
1TURC_1
1TURC_2
2TURC
POGS
CPFC1
C1PUC
MPUC
HPFC
MPFS
ADUGS
MX-4070N  EXTERNAL VIEW AND INTERNAL STRUCTURE  4 – 17
3
10. Motors
Signal name
Name
Type
Function and Operation
ADUM1
ADU motor 1
DC brushless motor
Drives the transport roller in the right door and right paper exit section
ADUM2
ADU motor 2
DC brushless motor
Drives the transport roller in the right door section
C1LUM
Paper tray lift motor (Paper feed tray 1)
DC brush motor
Lifts the lift plate of the paper feed tray (Paper feed tray 1)
CPFM
Paper feed motor
DC brushless motor
Drives the paper feed section
DM_CL
Drum motor (CL)
DC brushless motor
Drives the OPC drum/developing section (CL)
DM_K
Drum motor (K)
DC brushless motor
Drives the OPC drum/developing section (K) and primary transfer section
FUM
Fusing motor
DC brushless motor
Drives the fusing section
MIM
Scan motor
Stepping motor
Drives the scanner unit (scan, return operations)
OSM
Offset motor
Stepping motor
Offsets (shifts) paper
PFM
Transport motor
DC brushless motor
Drives the transport roller 5
PGM
Polygon motor
DC brushless motor
Scans laser beams
POM
Paper exit motor
DC brushless motor
Drives the roller in the paper exit section
PRM
Fusing pressure control motor
Stepping motor
Controls ON/OFF of the fusing roller pressure
RRM
Registration motor
DC brushless motor
Drives the registration roller (Controls the timing of the transfer image for 
the paper)
SBM
Reverse motor
DC brushless motor
Drives the transport roller in duplex mode
TNM_C
Toner motor (C)
Stepping motor
Supplies toner from the toner cartridge (C) to the developing unit
TNM_K
Toner motor (K)
Stepping motor
Supplies toner from the toner cartridge (K) to the developing unit
TNM_M
Toner motor (M)
Stepping motor
Supplies toner from the toner cartridge (M) to the developing unit
TNM_Y
Toner motor (Y)
Stepping motor
Supplies toner from the toner cartridge (Y) to the developing unit
ADUM1
ADUM2
C1LUM
CPFM
FUM
MIM
SBM
PGM
PRM
TNM_C
TNM_K
TNM_M
TNM_Y
RRM
PFM
DM_CL
DM_K
OSM
POM
3
: ‘17/July
MX-4070N  EXTERNAL VIEW AND INTERNAL STRUCTURE  4 – 18
11. Rollers
No.
Name
Function and Operation
1
Transport roller 1 (Idle)
Apply a pressure to paper and the transport roller to provide the transport power of the transport roller to paper
2
Transport roller 1 (Drive)
Transports paper fed from the paper feed tray to the transport roller 4
3
Paper pickup roller
(Paper feed tray 1)
Feeds paper to the paper feed roller
4
Separation roller
(Paper feed tray 1)
Separates paper to prevent double feeding
5
Paper feed roller
(Paper feed tray 1)
Feeds paper to the paper transport section
6
Transport roller 2 (Idle) 
Apply a pressure to paper and the transport roller to provide the transport power of the transport roller to paper
7
Transport roller 2(Drive)
Transports paper fed from the paper feed tray 1 to the transport roller 3
8
Transport roller 3
Transports paper from the transport roller 2 to the transport roller 4
9
Paper pickup roller
(Manual paper feed tray)
Feeds paper to the paper feed roller
10
Paper feed roller
(Manual paper feed tray)
Feeds paper to the paper transport section
11
Separation roller
(Manual paper feed tray)
Separate paper to prevent double feeding
12
Transport roller 4 (Idle)
Apply a pressure to paper and the transport roller to provide the transport power of the transport roller to paper
13
Transport roller 4 (Drive)
Transports paper from the transport roller 1 and 3 to the transport roller 5
14
Transport roller 5 (Idle)
Apply a pressure to paper and the transport roller to provide the transport power of the transport roller to paper
15
Transport roller 5 (Drive)
Transports paper to the registration roller. Paper is buckled between the registration roller and this roller to correct the 
paper skew and the relation between images and paper
16
Registration roller (Idle)
Apply a pressure to paper and the registration roller to provide the transport power of the transport roller to paper
17
Registration roller (Drive)
Transports paper to the transfer section. Controls the transport timing of paper and adjusts relative position between the 
images and paper
18
Transport roller 6 (Drive)
Transports paper to the paper exit section
33
32
31
30
23
22
20
21
18
24
25
35
34
26
27
29
10
9
11
28
8
7
1
6
4
5
3
13
12
15
14
17
16
2
19
36
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