Sharp MX-M363N / MX-M363U / MX-M503N / MX-M503U (serv.man17) Service Manual ▷ View online
MX-M503N EXTERNAL VIEW AND INTERNAL STRUCTURE 3 – 9
G. Sensors
MHPS
OCSW
CCD
TFD2
PPD2
TCS
PCS
TH_DV/HUD_DV
PPD1
HPOS
POD2
BD
POD1
WEB-END
TH_MY
TH_US
TH_US
APPD1
APPD2
TNBOX
TNF
CLUD1
CPFD1
CPFD2
DSW_C
CPED1
CSS11
CSS13
CSS12
CSS14
CSS21
CSS23
CSS22
CSS24
CSPD1
CLUD2
CPED2
CSPD2
MPED
MPWD
MTOP1
MTOP2
MPLD
MPFD
DSW_ADU
TFD3
POD3
MX-M503N EXTERNAL VIEW AND INTERNAL STRUCTURE 3 – 10
Signal name
Name
Function/Operation
Type
APPD1
ADU transport path detection 1
Detects the duplex (ADU) upstream paper pass.
Transmission type
APPD2
ADU transport path detection 2
Detects the duplex (ADU) midstream paper pass.
Transmission type
BD
Laser beam detection
Detects the laser scan start timing.
CCD
CCD unit
Converts document images (optical signals) into electrical signals.
CLUD1
Tray 1 upper limit detection (Lift HP detection)
Detects the tray 1 upper limit.
Transmission type
CLUD2
Tray 2 upper limit detection (Lift HP detection)
Detects the tray 2 upper limit.
Transmission type
CPED1
Tray 1 paper empty detection
Detects the tray 1 paper empty.
Transmission type
CPED2
Tray 2 paper empty detection
Detects the tray 2 paper empty.
Transmission type
CPFD1
Tray 1 transport detection (Paper entry detection)
Detects tray 1 paper pass.
Transmission type
CPFD2
Tray 2 transport detection (Paper entry detection)
Detects tray 2 paper pass.
Transmission type
CSPD1
Tray 1 paper remaining quantity detection
Detects the tray 1 paper remaining quantity.
CSPD2
Tray 2 paper remaining quantity detection
Detects the tray 2 paper remaining quantity.
CSS11
Tray 1 rear edge detection 1
Insertion of the tray is detected by detecting either of tray 1 rear
edge detection 1 - 4.
The paper size of tray 1 is detected.
edge detection 1 - 4.
The paper size of tray 1 is detected.
Duct switch
CSS12
Tray 1 rear edge detection 2
Duct switch
CSS13
Tray 1 rear edge detection 3
Duct switch
CSS14
Tray 1 rear edge detection 4
Duct switch
CSS21
Tray 2 rear edge detection 1
Insertion of the tray is detected by detecting either of tray 2 rear
edge detection 1 - 4.
The paper size of tray 2 is detected.
edge detection 1 - 4.
The paper size of tray 2 is detected.
Duct switch
CSS22
Tray 2 rear edge detection 2
Duct switch
CSS23
Tray 2 rear edge detection 3
Duct switch
CSS24
Tray 2 rear edge detection 4
Duct switch
DSW_ADU
ADU transport open/close detection
Detects the duplex (ADU) cover open/close.
Transmission type
DSW_C
Tray 1 and 2 transport cover open/close detection
Detects the tray 1 and 2 transport cover open/close.
HPOS
Shifter home position detection
Detects the shifter home position.
MHPS
Scanner home position sensor
Detects the scanner home position.
Transmission type
MPED
Manual feed paper empty detection
Detects the manual feed paper empty.
Transmission type
MPFD
Manual feed paper entry detection
Detects the manual feed paper entry.
Transmission type
MPLD
Manual feed paper length detector
Detects the manual paper feed tray paper length.
MPWD
Manual paper feed tray paper width detector
Detects the manual paper feed tray paper width.
Volume resistor
MTOP1
Manual paper feed tray pull-out position detector 1
Detects the manual paper feed tray paper pull-out position
(storing position).
(storing position).
Transmission type
MTOP2
Manual paper feed tray pull-out position detector 2
Detects the manual paper feed tray paper pull-out position (pull-
out position).
out position).
Transmission type
OCSW
Original cover SW
Detects the trigger for document size.
Transmission type
POD1
Fusing rear detection
Detects the paper exit from fusing.
Transmission type
POD2
Paper exit detection
Detects the paper from paper exit.
Transmission type
POD3
Right tray paper exit detection
Detects the paper exit to right tray.
PPD1
Resist pre-detection
Detects the paper in front of resist roller.
Transmission type
PPD2
Resist detection
Detects the paper in rear of resist roller.
Reflection type
PCS
Image density sensor
Detects toner patch density.
Reflection type
TCS
Toner density sensor
Detects the toner density (K).
Magnetic sensor
TFD2
Paper exit full detection
Detects the face down paper exit tray full.
Transmission type
TFD3
Right tray paper exit full detection
Detects the right tray paper exit full.
TH_DV/HUD_DV
Temperature/humidity detection
Detects the temperature and the humidity in the process section.
TH_MY
Main thermistor
Fusing temperature detection (main)
Thermistor
TH_US
Sub thermistor
Fusing temperature detection (sub)
Thermistor
TNF
Waste toner box remaining quantity detection
Detects installation of the waste toner box. Detects the waste
toner near end and the waste toner full.
toner near end and the waste toner full.
Transmission type
TNBOX
Waste toner box remaining quantity detection
Detects installation of the waste toner box. Detects the waste
toner near end and the waste toner full.
toner near end and the waste toner full.
Transmission type
WEB-END
Web end detection
Detects life end of the web cleaner.
Electrode switch
MX-M503N EXTERNAL VIEW AND INTERNAL STRUCTURE 3 – 11
H. Switches
Signal name
Name
Type
Function/Operation
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,
motor and the LSU laser.
motor and the LSU laser.
DSW-R
Right door open/close switch
Micro switch
Detects open/close of the right door, and turns ON/OFF the power line of the fusing,
motor and the LSU laser.
motor and the LSU laser.
MSW
Main switch
Seesaw switch
Turns ON/OFF the DC power source.
PWRSW
Operation panel power switch
Push switch
Controls ON/OFF of the DC power source.
MSW
DSW-F
DSW-R
PWRSW
MX-M503N EXTERNAL VIEW AND INTERNAL STRUCTURE 3 – 12
I. Clutches and solenoids
Signal name
Name
Type
Function/Operation
ADUGS
ADU gate solenoid
Electromagnetic solenoid
Controls the ADU gate.
CPFC1
Paper transport clutch 1
Electromagnetic clutch
Controls ON/OFF of the paper transport roller 7.
CPFC2
Paper transport clutch 2
Electromagnetic clutch
Controls ON/OFF of the paper transport roller in the paper transport section of
the paper feed tray section.
the paper feed tray section.
CPUC1
Paper feed clutch
(Paper feed tray 1)
(Paper feed tray 1)
Electromagnetic clutch
Controls ON/OFF of the roller in the paper feed tray 1 section.
CPUC2
Paper feed clutch
(Paper feed tray 2)
(Paper feed tray 2)
Electromagnetic clutch
Controls ON/OFF of the roller in the paper feed tray 2 section.
MPFS
Paper pickup solenoid
(Manual paper feed)
(Manual paper feed)
Electromagnetic solenoid
Paper pickup solenoid (Manual paper feed)
MPGS
Manual paper feed gate solenoid
Electromagnetic solenoid
Controls the manual paper feed gate Open/Close.
MPUC
Manual paper feed clutch
Electromagnetic clutch
Controls the manual paper feed section paper feed roller ON/OFF.
PSPS
Separation solenoid
Electromagnetic solenoid
Separates paper from the OPC drum.
TDSC
Toner supply clutch
Electromagnetic clutch
Controls ON/OFF of toner supply.
ADUGS
MPUC
MPFS
MPGS
CPUC1
CPUC2
TDSC
PSPS
CPFC1
CPFC2
Click on the first or last page to see other MX-M363N / MX-M363U / MX-M503N / MX-M503U (serv.man17) service manuals if exist.