Signal name
Part name
Switch/sensor
Function/operation
Remark
K
LHP
Lens home position sensor
Sensor
Lens home position sensing
L
DPFD
ADU paper feed sensor
Sensor
Duplex section paper feed sensing
M
DTBHPS
ADU rear plate home position
Sensor
Duplex section rear plate home position
sensing
N
DTWHPS
ADU alignment plate home position
Sensor
Duplex section alignment plate home
position sensing
O
DPPD1
ADU transport sensor 1
Sensor
Duplex section transport sensing
P
DPPD2
ADU transport sensor 2
Sensor
Duplex section transport sensing
Q
DPPD3
ADU transport sensor 3
Sensor
Duplex section transport sensing
R
DTPD
ADU paper sensor
Sensor
Duplex section paper presence sensing
S
DFDL2
Paper feed sensor 5
Sensor
LCC paper feed sensing
T
PPD3
Transport sensor 3
Sensor
Paper transport sensing
U
DPID1
ADU paper entry sensor 1
Sensor
Duplex section paper entry sensing
V
DPID2
ADU paper entry sensor 2
Sensor
Duplex section paper entry sensing
W
TES
Toner empty sensor
Sensor
Toner hopper toner empty sensing
X
TNCTR in
Toner cartridge sensor
Switch
Refill toner cartridge installation sensing
Y
TCS
Toner density sensor
Sensor
Developing unit toner density sensing
Z
PFD1
Paper feed sensor 1
Sensor
No. 1 tray paper feed sensing
[
PFD2
Paper feed sensor 2
Sensor
No. 2 tray paper feed sensing
\
PFD3
Paper feed sensor 3
Sensor
No. 3 tray paper feed sensing
]
PFD4
Paper feed sensor 4
Sensor
No. 4 tray paper feed sensing
Japan only
^
DSWF1
Front cover switch 1
Switch
Front cover open/close sensing
100V system
_
DSWF2
Front cover switch 2
Switch
Front cover open/close sensing
100V system
‘
TS
Thermostat
—
—
a
THS
Fusing temperature sensor
Thermister
Fusing section temperature sensing
b
TBBOX
Waste toner bottle sensor
Sensor
Waste toner bottle presence sensing
c
TNF
Waste toner full sensor
Sensor
Waste toner full sensing
d
DSWE
Paper exit section open switch
Switch
Paper exit section open/close sensing
100V system
e
PPD1
Transport sensor 1
Sensor
Paper transport sensing
f
PPD2
Transport sensor 2
Sensor
Paper transport sensing
g
POD
Paper exit sensor
Sensor
Paper transport sensing
h
DHSW
Dehumidifier heater switch
Switch
Dehumidifier heater ON/OFF
Japan only
i
MSW
Power switch
Switch
Power switch ON/OFF
Japan only
j
PSD
Separation sensor
Sensor
Paper separation sensing,
5 – 7