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 – 9
C. Motors/Clutches/PWB/Lamps/Fan
Signal name
Name
Type
Function and operation
SLUM
Lift up motor
PM step motor
Lifts up or moves down the document feed tray
SPFC
Document feed clutch
Electromagnetic clutch
Controls ON/OFF of the rollers in the document feed section
SPFFAN
Cooling fan motor
DC brushless motor
Cools the motors and the clutches
SPOM
Document exit motor
PM step motor
Drives the document exit roller
SPUFM
Transport motor
DC brushless motor
Drives the transport roller
SRRC
Registration roller clutch
Electromagnetic clutch
Controls ON/OFF of registration roller
STRC
Transport roller 2 clutch
Electromagnetic clutch
Controls ON/OFF of the transport roller 2
STRRC
Transport roller 1 clutch
Electromagnetic clutch
Controls ON/OFF of the transport roller 1
Name
Function and operation
DSPF cnt PWB
Controls the image data process and all the DSPF
CCD PWB
Scans document images and perform A/D conversion of the scanning signal
LED PWB
Radiates light onto a document for the CCD to scan the document image
SLUM
SPOM
SPFC
STRC
STRRC
SRRC
SPUFM
SPFFAN
CCD PWB
DSPF cnt PWB
LED PWB
MX-4070N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 10
6. RSPF
A. Rollers
No.
Name
Function and operation
1
Pickup roller
Picks up document and feed it to the document feed roller
2
Document feed roller
Feeds a document to the transport section. Makes a buckle on paper between the registration roller and this roller
to correct the start position of document skew and document image scan
to correct the start position of document skew and document image scan
3
Separation roller
Separates a document to prevent double-feeding
4
Registration roller (Drive)
Transports a document to the transport roller 1 / Controls the transport timing of the document and adjusts the
document scanning timing
document scanning timing
5
Registration roller (Idle)
Apply a pressure to a document and the registration roller to provide the transport power of the transport roller to
the document
the document
6
Transport roller 1 (Drive)
Transports a document transported from the registration roller to the document scanning section
7
Transport roller 1 (Idle)
Apply a pressure to a document and the transport roller to provide the transport power of the transport roller to the
document
document
8
Transport roller 2 (Drive)
Transports a document transported from the document scanning section to the paper exit roller
9
Transport roller 2 (Idle)
Apply a pressure to a document and the transport roller to provide the transport power of the transport roller to the
document
document
10
Paper exit roller (Drive)
Discharges a document. Switchbacks the document and transports it to the registration roller when scanning the
back surface
back surface
11
Paper exit roller (Idle)
Apply a pressure to a document and the paper exit roller to provide the transport power of the paper exit roller to
the document
the document
1
2
3
5
4
7
6
8
9
10 11
MX-4070N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 11
B. Sensors and switches
Signal name
Name
Type
Function and operation
SCOV
Cover open/close sensor
Transmission type
Detects open/close of the RSPF cover
SOCD
RSPF open/close sensor
Transmission type
Detects open/close of the RSPF unit
SPED
Document sensor
Transmission type
Detects document empty in the RSPF paper feed tray
SPLS1
Paper size sensor 1
Transmission type
Detects the document length in the RSPF paper feed tray
SPLS2
Paper size sensor 2
Transmission type
Detects the document length in the RSPF paper feed tray
SPPD1
Document pass sensor 1
Transmission type
Detects paper feed and the document size in random paper feed
SPPD2
Document pass sensor 2
Transmission type
Detects paper pass
SPPD3
Document pass sensor 3
Transmission type
Detects paper pass
SPPD4
Document pass sensor 4
Transmission type
Detects paper exit and switchback
SPWS
Document size sensor
Volume type resistor
Detects the document width
SCOV
SOCD
SPLS1
SPLS2
SPPD1
SPPD2
SPPD3
SPPD4
SPED
SPWS
MX-4070N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 12
C. Motors/Clutches/Solenoidos/PWB
Signal name
Name
Type
Function and operation
SPFM
RSPF transport motor
Stepping motor
Transports a document
SPRS
Paper exit roller solenoid
Electromagnetic solenoid
Controls ON/OFF of the power of the paper exit roller
SPUM
RSPF paper feed motor
Stepping motor
Feeds a document
SRRC
Registration roller clutch
Electromagnetic clutch
Controls the registration roller
Name
Function and operation
RSPF DRIVER PWB
Drives the motor, the solenoid and the clutch in the RSPF section
SPRS
SPFM
SPUM
SRRC
RSPF DRIVER PWB
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