Read Sharp MX-1800N (serv.man13) Service Manual online
MX-1800N EXTERNAL VIEW AND INTERNAL STRUCTURE 5 – 8
H. Switches
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.
Manual paper
feed unit
feed unit
MPWD
Manual paper feed tray paper width
detector
detector
Detects the manual paper feed tray paper width.
Volume resistor
MTOP1
Manual paper feed tray pull-out position
detector 1
detector 1
Detects the manual paper feed tray paper pull-out
position (storing position).
position (storing position).
Transmission type
Manual paper
feed unit
feed unit
MTOP2
Manual paper feed tray pull-out position
detector 1
detector 1
Detects the manual paper feed tray paper pull-out
position (pull-out position).
position (pull-out position).
Transmission type
Manual paper
feed unit
feed unit
OCSW
Original cover SW
Document size detection trigger.
Transmission type
PCS_CL/K
Process control sensor
Detects the toner patch density.
Reflection type
POD1
Fusing after-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
Registration pre-detection
Detects the paper in front of resist roller.
Transmission type
PPD2
Registration detection
Detects the paper in rear of resist roller.
REGS_F/R
Resist sensor
Detects the resist shift.
Reflection type
TCS_C
Toner density sensor
Detects the toner density (C).
Magnetic sensor
TCS_K
Toner density sensor
Detects the toner density (K).
Magnetic sensor
TCS_M
Toner density sensor
Detects the toner density (M).
Magnetic sensor
TCS_Y
Toner density sensor
Detects the toner density (Y).
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_M/HUD_M
Temperature/humidity detection
Detects the temperature/humidity.
Signal name
Name
Type
Function/Operation
Note
1TNFD
Waste toner full detection switch
Mechanical switch
Detects the waste toner full.
DHSW
(Japan only)
(Japan only)
Dehumidifier heater switch
Seesaw switch
Turns ON/OFF the power lone of the dehumidifier heaters
provided in the scanner (reading) section and the paper
feed section.
provided in the scanner (reading) section and the paper
feed section.
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.
the power line of the fusing 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.
the power line of the fusing motor and the LSU laser.
MSW
Main SW
Seesaw switch
Turns ON/OFF the main DC power source.
PWRSW
Operation panel power switch
Push switch
Outputs the ON/OF control signal of the DC power source.
Signal name
Name
Function/Operation
Type
NOTE
PWRSW
DSW-R
DSW-F
MSW
1TNFD
DHSW
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