Sharp MX-C310 / MX-C311 / MX-C312 / MX-C380 / MX-C381 / MX-C400 / MX-C401 (serv.man125) Service Manual ▷ View online
MX-C401 EXTERNAL VIEW AND INTERNAL STRUCTURE 3 – 6
6. Sensors and detectors
Signal name
Name
Type
Function/Operation
Note
1TUD_CL
Transfer belt separation detector CL
Transmission type
Detects separation of the color section of the transfer
belt.
belt.
High voltage PWB
holder unit
holder unit
1TUD_K
Transfer belt separation detector BK
Transmission type
Detects separation of the black section of the transfer
belt.
belt.
Frame unit
APPD1
ADU transport path detector 1
Transmission type
Detects paper pass in the upper stream of the
switchback section.
switchback section.
Right door unit
APPD2
ADU transport path detector 2
Transmission type
Detects paper pass in the middle stream of the
switchback section.
switchback section.
Right door unit
CLUD1
Tray 1 upper limit detector
Transmission type
Detects that the top surface of the paper stored in the
tray 1 is lifted to the top.
tray 1 is lifted to the top.
Paper feed unit
CPED1
Tray 1 paper empty detector
Transmission type
Detects that paper is stored in the tray 1.
Paper feed unit
CPFD1
Paper transport detector 1
Reflection type
Detects paper when passes the transport roller 1.
Paper feed unit
CSPD1
Tray 1 paper remaining quantity
detector
detector
Transmission type
Detects the paper remaining quantity in the tray 1.
Lift-up unit
DHPD_CL
Drum cartridge (CL) rotation detector
Transmission type
Detects the rotating state of the color drum cartridge.
Main drive unit
DHPD_K
Drum cartridge (BK) rotation detector
Transmission type
Detects the rotating state of the black drum cartridge.
Main drive unit
HLPCD
Fusing roller pressure release detector
Transmission type
Detects separation of the upper and the lower heat
rollers.
rollers.
Fusing unit
MHPS
Scanner home position detector
Transmission type
Detects the scanner home position.
Scanner unit
MPED
Manual feed paper empty detector
Transmission type
Detects paper empty in the manual paper feed tray.
Manual paper feed unit
MPLD1
Manual feed paper length detector 1
Transmission type
Detects the length of paper in the manual paper feed
tray.
tray.
Manual paper feed unit
MPWS
Manual paper feed tray paper width
sensor
sensor
Volume resistor
Detects the width of the paper guide in the manual
paper feed tray.
paper feed tray.
Manual paper feed unit
POD1
Fusing rear detector
Transmission type
Detects paper exit from the fusing section.
Frame fusing unit
POD2
Paper exit detector
Transmission type
Detects paper which is discharged.
Paper exit lower PG unit
PPD1
Paper transport detector 2
Transmission type
Detects paper when passes the transport roller 2.
Paper feed unit
PPD2
Paper transport detector 3
Reflection type
Detects paper in front of the registration roller.
Frame unit
REGS_F
Registration sensor
Reflection type
Detects registration shift.
Registration unit
REGS_R
RTH_EX1
External heat roller contact thermistor 1
Thermistor
Detects the temperature of the external heat roller.
Fusing unit
RTH_EX2
External heat roller contact thermistor 2
Thermistor
SOCD
SCOV
SPED
MHPS
TFD2
TCS_Y
TCS_M
TCS_C
TCS_K
PPD2
APPD2
CPED1
CSPD1
CLUD1
MPED
MPLD1
MPWS
TH/HUD
CPFD1
PPD1
POD2
POD1
APPD1
HLPCD
RTH_EX1
RTH_EX2
RTH_Sub
RTH_Low
RTH_Main
REGS_F
1TUD_K
1TUD_CL
DHPD_CL
DHPD_K
REGS_R
SPPD1
SPPD2
MX-C401 EXTERNAL VIEW AND INTERNAL STRUCTURE 3 – 7
7. Switches
RTH_Low
Lower heat roller contact thermistor
Thermistor
Detects the temperature of the lower heat roller.
Fusing unit
RTH_Main
Upper heat roller non-contact
thermistor
thermistor
Non-contact
thermistor
thermistor
Detects the temperature of the upper heat roller.
Fusing unit
RTH_Sub
Upper heat roller contact thermistor
Thermistor
SCOV
RSPF cover open/close detector
Transmission type
Detects open/close of the RSPF cover.
RSPF unit
SOCD
RSPF open/close detector
Transmission type
Detects open/close of the RSPF unit itself.
RSPF unit
SPED
RSPF document empty detector
Transmission type
Detects that a document is in the document tray.
RSPF unit
SPPD1
RSPF transport detector 1
Transmission type
Detects a document which passes the paper path.
RSPF unit
SPPD2
RSPF transport detector 2
Transmission type
Detects a document which passes the paper path.
RSPF unit
TCS_C
Toner density sensor
Magnetic sensor
Detects the toner density in the developing cartridge.
(C)
(C)
Developing cartridge
TCS_K
Toner density sensor
Magnetic sensor
Detects the toner density in the developing cartridge.
(K)
(K)
Developing cartridge
TCS_M
Toner density sensor
Magnetic sensor
Detects the toner density in the developing cartridge.
(M)
(M)
Developing cartridge
TCS_Y
Toner density sensor
Magnetic sensor
Detects the toner density in the developing cartridge.
(Y)
(Y)
Developing cartridge
TFD2
Paper exit tray full detector
Transmission type
Detects the full state of the paper exit tray.
Paper exit upper PG unit
TH/HUD
Temperature humidity sensor
Temperature
humidity sensor
humidity sensor
Detects the temperature and the humidity around the
machine.
machine.
Right door unit
Signal name
Name
Type
Function/Operation
Note
DSW-F
DRCRU_Y
DRCRU_M
DRCRU_C
DRCRU_K
1TNFD
DSW-R
PWRSW
MSW
MX-C401 EXTERNAL VIEW AND INTERNAL STRUCTURE 3 – 8
8. Clutches and solenoids
Signal name
Name
Type
Function/Operation
1TNFD
Waste toner full detection switch
Micro switch
Detects the waste toner full.
DRCRU_C
OPC drum initial (new OPC drum) detector (C)
Micro switch
Detects the OPC drum initial state (new OPC drum).
DRCRU_K
OPC drum initial (new OPC drum) detector (BK)
Micro switch
Detects the OPC drum initial state (new OPC drum).
DRCRU_M
OPC drum initial (new OPC drum) detector (M)
Micro switch
Detects the OPC drum initial state (new OPC drum).
DRCRU_Y
OPC drum initial (new OPC drum) detector (Y)
Micro switch
Detects the OPC drum initial state (new OPC drum).
DSW-F
Front door open/close switch
Micro switch
Detects open/close of the front door, and turns ON/OFF the power line of
the fusing, the motor and the LSU laser.
the fusing, the motor and the LSU laser.
DSW-R
Right door open/close switch
Micro switch
Detects open/close of the right door unit, and turns ON/OFF the power
line of the fusing, the motor and the LSU laser.
line of the fusing, the motor and the LSU laser.
MSW
Main switch
Seesaw switch
Turns ON/OFF the main DC power source.
PWRSW
Operation panel power switch
Push switch
Outputs the ON/OFF control signal of the DC power source.
Signal name
Name
Type
Function/Operation
1TURC_1
Primary transfer separation clutch 1
Electromagnetic clutch
Controls the primary transfer separation mode.
1TURC_2
Primary transfer separation clutch 2
Electromagnetic clutch
Controls the primary transfer separation mode.
2TURC
Secondary transfer separation clutch
Electromagnetic clutch
Controls open/close of the resist sensor cover.
ADUC1
ADU transport clutch 1
Electromagnetic clutch
Controls ON/OFF of the roller in the switchback section.
CPFC
Tray vertical transport clutch
Electromagnetic clutch
Controls ON/OFF of the paper transport roller in the tray paper feed section.
CPUC1
Paper feed clutch (Tray paper feed)
Electromagnetic clutch
Controls ON/OFF of the roller in the tray paper feed section.
HLPCS
Fusing pressure release solenoid
Electromagnetic solenoid
Controls the pressure applied to the upper and the lower heat rollers in the
fusing section.
fusing section.
MPFS
Paper pickup solenoid
(Manual paper feed)
(Manual paper feed)
Electromagnetic solenoid
Controls ON/OFF of the pick-up operation of the paper feed roller in the
manual paper feed section.
manual paper feed section.
SPUS
RSPF paper feed roller solenoid
Electromagnetic solenoid
Controls ON/OFF of the paper feed roller in the RSPF paper feed section.
SPUS
1TURC_1
1TURC_2
2TURC
HLPCS
MPFS
ADUC1
CPFC
CPUC1
MX-C401 EXTERNAL VIEW AND INTERNAL STRUCTURE 3 – 9
9. Drive motors
Signal name
Name
Type
Function/Operation
CLUM
Paper tray lift-up motor
(Paper feed tray 1)
(Paper feed tray 1)
DC brush-less motor
Drives the lift plate of the paper feed tray.
CPFM
Paper feed motor
Stepping motor
Drives the paper feed section.
DVM_CL
Developing drive motor (CL)
Brush-less motor
Drives the development cartridge (color) and the drum cartridge (color).
DVM_K
Developing drive motor (K)
Brush-less motor
Drives the development cartridge (black), the drum cartridge (black), the
primary transfer unit, and the secondary transfer unit.
Also separates the primary transfer unit.
primary transfer unit, and the secondary transfer unit.
Also separates the primary transfer unit.
FUM
Fusing drive motor
DC brush motor
Drives the fusing unit.
MIM
Scanner motor
Stepping motor
Drives the carriage unit.
PGM1
Polygon motor 1
DC brush-less motor
Scans the laser beam.
POM
Paper exit drive motor
Stepping motor
Drives the paper exit roller.
RRM
Registration motor
Stepping motor
Drives the resist roller and controls ON/OFF.
SPFM
RSPF transport motor
Stepping motor
Drives the RSPF unit.
TNM_C
Toner motor C
Synchronous motor
Transports toner from the toner cartridge to the developing unit.
TNM_K
Toner motor K
Synchronous motor
Transports toner from the toner cartridge to the developing unit.
TNM_M
Toner motor M
Synchronous motor
Transports toner from the toner cartridge to the developing unit.
TNM_Y
Toner motor Y
Synchronous motor
Transports toner from the toner cartridge to the developing unit.
SPFM
MIM
POM
TNM_K
TNM_C
TNM_M
TNM_Y
FUM
PGM1
RRM
CPFM
CLUM
DVM_K
DVM_CL
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