Sharp MX-6240N / MX-7040N (serv.man23) Service Manual ▷ View online
MX-7040N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 9
6. Sensors and detectors
Signal name
Name
Type
Function/Operation
1TUD_CL
Transfer mode detector (CL)
Light transmission
Detects separation of the transfer belt and the transfer mode.
(Detection is made by combination of 1TUD_CL/1TUD_K signals.)
(Detection is made by combination of 1TUD_CL/1TUD_K signals.)
1TUD_K
Transfer mode detector (BK)
Light transmission
Detects separation of the transfer belt and the transfer mode.
(Detection is made by combination of 1TUD_CL/1TUD_K signals.)
(Detection is made by combination of 1TUD_CL/1TUD_K signals.)
APPD1
ADU paper pass detector 1
Light transmission
Detects paper entry in the ADU section.
APPD2
ADU paper pass detector 2
Light transmission
Detects paper pass in the transport roller 21.
BD
Laser beam sensor
Pin diode
Detects laser beams.
C3LUD
Paper upper limit detector
(Paper feed tray 3)
(Paper feed tray 3)
Light transmission
Detects the upper limit lift position of paper in the paper feed tray.
C3PED
Paper empty detector (Paper feed tray 3)
Light transmission
Detects paper.
C3PFD
Paper pass sensor (Paper feed tray 3)
Light reflection
Detects paper pass in the paper transport section of the paper feed tray
3.
3.
C3SPD
Paper remaining quantity detector
(Paper feed tray 3)
(Paper feed tray 3)
Light transmission
Detects the paper remaining quantity.
C3SS1 - 4
Paper size detector (Paper feed tray 4)
Tact switch
Detects the paper size. Detects open/close of the paper feed tray.
C4LUD
Paper upper limit detector
(Paper feed tray 4)
(Paper feed tray 4)
Light transmission
Detects the upper limit lift position of paper in the paper feed tray.
C4PED
Paper empty detector (Paper feed tray 4)
Light transmission
Detects paper.
C4PFD
Paper pass sensor (Paper feed tray 4)
Light reflection
Detects paper pass in the paper transport section of the paper feed tray
4.
4.
C4PWD
Paper width sensor (Paper feed tray 4)
Resistance volume
Detects the paper width.
C4SPD
Paper remaining quantity detector
(Paper feed tray 4)
(Paper feed tray 4)
Light transmission
Detects the paper remaining quantity.
C4SS1 - 4
Paper feed tray size detector
(Paper feed tray 4)
(Paper feed tray 4)
Tact switch
Detects the paper size. Detects open/close of the paper feed tray.
MHPS
TFD2
OCSW
POD1
PRTPD
TFD3
POD3
APPD1
POD2
DSW_ADU
FPFD
MPLD1
MPWD
APPD2
PPD1
PPD2
TCS_K
TCS_M
TCS_Y
T1PED
T2PED
T1LUD
TH1_LSU
T2LUD
T1SPD
T2SPD
DSW_CS
TNDSET
C3PFD
WTFD
C4PFD
C4PWD
C4LUD
C4PED
C4SPD
C4SS4
C4SS3
C4SS1
C4SS2
C3SS4
C3SS3
C3SS1
C3SS2
C3LUD
C3PED
WTBSET
T1PPD1 T1PPD2
T2PPD1
DSW_RL
MPFD
MPED
LPPD
C3SPD
TFSD_Y TFSD_M TFSD_C
TFSD_K
DSW_FU
1TUD_K
PTCCHPD
DHPD_K
DHPD_C
DHPD_M
DHPD_Y
CCHPD_Y
CCMD_Y
CCHPD_M
CCMD_M
CCHPD_C
CCMD_C
CCHPD_K
CCMD_K
1TUD_CL
TCS_C
BD
HLPCD
TH_US1
TH_UM
TH_US2
TH_LM2
TH_LM1
WEBEND2
REGS_R /PCS R
HUD_M/TH_M
REGS_C /PCS_C
REGS_F /PCS_F
MX-7040N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 10
CCHPD_C
MC cleaner HP sensor (C)
Light transmission
Detects the MC cleaner home position.
CCHPD_K
MC cleaner HP sensor (K)
Light transmission
Detects the MC cleaner home position.
CCHPD_M
MC cleaner HP sensor (M)
Light transmission
Detects the MC cleaner home position.
CCHPD_Y
MC cleaner HP sensor (Y)
Light transmission
Detects the MC cleaner home position.
CCMD_C
MC cleaner shift sensor (C)
Light transmission
Detects the shift distance of the MC cleaner.
CCMD_K
MC cleaner shift sensor (K)
Light transmission
Detects the shift distance of the MC cleaner.
CCMD_M
MC cleaner shift sensor (M)
Light transmission
Detects the shift distance of the MC cleaner.
CCMD_Y
MC cleaner shift sensor (Y)
Light transmission
Detects the shift distance of the MC cleaner.
DHPD_C
Drum phase sensor (C)
Light transmission
Detects rotation and the phase of the OPC drum (C).
DHPD_K
Drum phase sensor (K)
Light transmission
Detects rotation and the phase of the OPC drum (K).
DHPD_M
Drum phase sensor (M)
Light transmission
Detects rotation and the phase of the OPC drum (M).
DHPD_Y
Drum phase sensor (Y)
Light transmission
Detects rotation and the phase of the OPC drum (Y).
DSW_ADU
ADU open/close detector
Light transmission
Detects open/close of the ADU section.
DSW_CS
Transport cover open/close detector
Light transmission
Detects open/close of the transport cover.
DSW_FU
Front door upper open/close detector
Light transmission
Detects open/close of the front door upper.
DSW_RL
Right lower door open/close detector
Light transmission
Detects open/close of the right lower door.
FPFD
Fusing front paper pass detector
Light reflection
Detects paper pass in front of the fusing section.
HLPCD
Fusing pressure detector
Light transmission
Detects the fusing pressure state.
HUD_M/TH_M
Temperature/humidity sensor
Temperature/humidity
sensor
sensor
Detects the temperature and the humidity. (For the process control)
LPPD
LCC transport detector
Light reflection
Detects paper transport from the LCC.
MHPS
Scanner home position sensor
Light transmission
Detects the scanner home position.
MPED
Paper empty detector
(Manual paper feed tray)
(Manual paper feed tray)
Light transmission
Detects paper.
MPFD
Paper feed detector (Manual paper feed)
Light transmission
Detects paper pass in the manual paper feed section.
MPLD1
Paper length detector
(Manual paper feed tray)
(Manual paper feed tray)
Light transmission
Detects the paper length.
MPWD
Paper width sensor
(Manual paper feed tray)
(Manual paper feed tray)
Resistance volume
Detects the paper width.
OCSW
Document size detection trigger sensor
Light transmission
Generates the document size detection trigger signal.
POD1
Fusing paper exit detector
Light transmission
Detects paper pass in the fusing section.
POD2
Left paper exit detector
Light transmission
Detects paper exit to the left direction.
POD3
Right paper exit detector
Light transmission
Detects paper exit to the left direction.
PPD1
Registration pre-detection
Light reflection
Detects the paper timing before registration.
PPD2
Registration sensor
Light reflection
Detects the paper registration timing.
PRTPD
Paper exit tray paper detector
(Right paper exit tray)
(Right paper exit tray)
Light transmission
Detects paper in the paper exit tray.
PTCCHPD
PTC cleaner home position sensor
Light transmission
Detects the PTC cleaner home position.
REGS_C/
PCS_C
PCS_C
Image registration/Density sensor (C)
Light reflection
Detects image color shift. Detects the toner patch density.
REGS_F/
PCS_F
PCS_F
Image registration/Density sensor (F)
Light reflection
Detects image color shift. Detects the toner patch density.
REGS_R/
PCS R
PCS R
Image registration/Density sensor (R)
Light reflection
Detects image color shift. Detects the toner patch density.
T1LUD
Paper upper limit detector (Paper feed
tray 1)
tray 1)
Light transmission
Detects the upper limit lift position of paper in the paper feed tray.
T1PED
Paper empty detector (Paper feed tray 1)
Light transmission
Detects paper.
T1PPD1
Paper pass sensor (Paper feed tray 1)
Light reflection
Detects paper pass in the paper transport section of the paper feed tray
1.
1.
T1PPD2
Paper pass sensor (Paper feed tray 1)
Light reflection
Detects paper pass in the paper transport section of the paper feed tray
1.
1.
T1SPD
Paper remaining quantity detector
(Paper feed tray 1)
(Paper feed tray 1)
Light transmission
Detects the paper remaining quantity.
T2LUD
Paper upper limit detector (Paper feed
tray 2)
tray 2)
Light transmission
Detects the upper limit lift position of paper in the paper feed tray.
T2PED
Paper empty detector (Paper feed tray 2)
Light transmission
Detects paper.
T2PPD1
Paper pass sensor (Paper feed tray 2)
Light reflection
Detects paper pass in the paper transport section of the paper feed tray
2.
2.
T2SPD
Paper remaining quantity detector
(Paper feed tray 2)
(Paper feed tray 2)
Light transmission
Detects the paper remaining quantity.
TCS_C
Toner density sensor (C)
Magnetic sensor
Detects toner supply from the toner cartridge. Detects the toner density
(C).
(C).
TCS_K
Toner density sensor (K)
Magnetic sensor
Detects toner supply from the toner cartridge. Detects the toner density
(K).
(K).
TCS_M
Toner density sensor (M)
Magnetic sensor
Detects toner supply from the toner cartridge. Detects the toner density
(M).
(M).
TCS_Y
Toner density sensor (Y)
Magnetic sensor
Detects toner supply from the toner cartridge. Detects the toner density
(Y).
(Y).
TFD2
Paper exit full detector (Center paper exit
tray)
tray)
Light transmission
Detects paper full in the center paper exit tray.
TFD3
Paper exit full detector (Right paper exit
tray)
tray)
Light transmission
Detects paper full in the right paper exit tray.
TFSD_C
Toner remaining quantity sensor (C)
Piezoelectric sensor
Detects the remaining quantity of toner in the toner hopper.
Signal name
Name
Type
Function/Operation
MX-7040N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 11
TFSD_K
Toner remaining quantity sensor (K)
Piezoelectric sensor
Detects the remaining quantity of toner in the toner hopper.
TFSD_M
Toner remaining quantity sensor (M)
Piezoelectric sensor
Detects the remaining quantity of toner in the toner hopper.
TFSD_Y
Toner remaining quantity sensor (Y)
Piezoelectric sensor
Detects the remaining quantity of toner in the toner hopper.
TH_LM1
Fusing temperature sensor 1
(Fusing roller B)
(Fusing roller B)
Non-contact thermistor
Detects the center surface temperature of the fusing roller B.
TH_LM2
Fusing temperature sensor 2
(Fusing roller B)
(Fusing roller B)
Contact-type thermistor
Detects the edge surface temperature of the fusing roller B.
TH_UM
Main fusing temperature sensor
(Fusing belt)
(Fusing belt)
Non-contact thermistor
Detects the center surface temperature of the fusing belt.
TH_US1
Sub fusing temperature sensor
(Fusing belt)
(Fusing belt)
Non-contact thermistor
Detects the edge surface temperature of the fusing belt.
TH_US2
Fusing temperature sensor (Fusing belt)
Contact-type thermistor
Detects the edge surface temperature of the fusing belt.
TH1_LSU
LSU thermistor 1
Thermistor
Detects the temperature in the LSU. (Used for correction of distortion.)
TNDSET
Open/close detector
(Paper feed tray 1, 2)
(Paper feed tray 1, 2)
Light transmission
Detects open/close of the paper feed trays 1 and 2.
WEBEND2
Web end detector 2
Light transmission
Detects web end.
WTBSET
Waste toner bottle detector
Light transmission
Detects installation of the waste toner bottle.
WTFD
Waste toner full detector
Light transmission
Detects full of waste toner.
Signal name
Name
Type
Function/Operation
MX-7040N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 12
7. Switches
*: Option
Signal name
Name
Type
Function/Operation
DSW_F
Front door open/close switch
Micro switch
Detects open/close of the front door. Opens/closes the power lines of the
fusing section, the motor, and the LSU laser.
fusing section, the motor, and the LSU laser.
DSW_R
Right door open/close switch
Micro switch
Detects open/close of the right door. Opens/closes the power lines of the
fusing section, the motor, and the LSU laser.
fusing section, the motor, and the LSU laser.
MSW
Main power switch
Seesaw switch
Turns ON/OFF the main power.
PWRSW
Operation panel power switch
Push switch
Turns ON/OFF the power on the secondary side.
WH_SW *
Dehumidifier heater switch
Seesaw switch
Turns ON/OFF the power line of the dehumidifier heater.
WH_SW
PWRSW
MSW
DSW_F
DSW_R
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