Read Sharp MX-B381 / MX-B401 (serv.man7) Service Manual online
MX-B381/B401 EXTERNAL VIEW AND INTERNAL STRUCTURE 3 – 6
7. Switches
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_K
Toner density sensor
Magnetic sensor
Detects the toner density in the developing cartridge.
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
1TNFD
Waste toner full detection switch
Micro switch
Detects the waste toner full.
DRCRU_K
OPC drum initial (new OPC drum) detector (BK)
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
Note
DSW-F
DRCRU_K
1TNFD
DSW-R
PWRSW
MSW
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