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: Feb. 9 2004
1
AR-M550/M620/M700 EXTERNAL VIEW AND INTERNAL STRUCTURE 5 - 10
B. Switch
SOCD
SOCD
SPF open/close detector
SPF unit open/close detection
Transmission
type
Close
SCN PWB
Sensor
T1SPD
T1SPD
Paper remaining quantity
detector (Paper feed tray 1)
Paper remaining quantity
detection (Paper feed tray 1)
Transmission
type
-
Remaining
paper quantity
50% or less
PCU PWB
Paper feed tray
remaining quantity
sensor
T2SPD
T2SPD
Paper remaining quantity
detector (Paper feed tray 2)
Paper remaining quantity
detection (Paper feed tray 2)
Transmission
type
-
Remaining
paper quantity
33% or less
PCU PWB
Paper feed tray
remaining quantity
sensor
TANSET
TANSET
Paper feed tray 1/2 detection
signal
Paper feed tray 1, 2 (Tandem tray)
insertion detection
Transmission
type
Pull-out
Insertion
PCU PWB
Paper feed tray
system sensor
TCS
TCS
Toner density sensor
Toner density detection
Magnetic
sensor
-
-
PCU PWB
Analog detector
TFSD
TFSD
Toner remaining quantity
sensor
Toner hopper toner remaining
quantity detection
Magnetic
sensor
Remaining
quantity great
Remaining
quantity small
PCU PWB
Other sensor,
switch
TH
TH
LCD thermistor
LCD section temperature
detection
Thermistor
-
-
SCN PWB
Other detector
TH-CL
TH-CL
OPC drum temperature sensor
OPC drum peripheral temperature
detection
Thermistor
-
-
PCU PWB
Analog detector
TH-DV
TH-DV
Developing humidity sensor
Developing section humidity
detection
Thermistor/
humidity
-
-
PCU PWB
Analog detector
TH-EX
TH-EX
Paper exit unit temperature
sensor
Paper exit unit peripheral
temperature detection (Cooling
fan operation monitor)
Thermistor
-
-
PCU PWB
Analog detector
TH-RA
TH-RA
Room temperature sensor
Room temperature detection
Thermistor
-
-
PCU PWB
Analog detector
(Not used)
THPS2
THPS2
Transfer belt contact/separation
home position sensor 2
Transfer belt separation home
position detection 2
Transmission
type
-
Contact
PCU PWB
Not used.
TLS
TLS
Waste toner pipe lock detector
Waste toner pipe lock detection
Lead type
-
Lock (Tilt)
PCU PWB
Other sensor,
switch
TNCA
TNCA
Waste toner full detection signal Waste toner full detection
Magnetic
sensor
-
-
PCU PWB
Not used.
Code
Signal
name
Name
Type
Function/Operation
MODEL
Active
condition
NOTE
DSW-F
DSW-F
Front door open/close
switch
Micro switch
Front door open/close detection, Main charger
power source, Developing bias power line open/
close
DSW-L
DSW-L
Left door open/close
switch
Micro switch
Left door open/close detection, Main charger
power source, Developing bias power line open/
close
DSW-R
DSW-R
Manual paper feed
unit open/close switch
Micro switch
Manual paper feed unit open/close detection,
Main charger power source, Developing bias
power line open/close
MPSW
Main power switch
Seesaw switch
Turns ON/OFF all the power sources.
MSW
Power switch
Seesaw switch
Turns ON/OFF the main DC power source.
(Turns ON/OFF the engine power source except
for the sub DC power source.)
Shut-off
solenoid
built-in
WH-SW
WH-SW
Dry heater switch
Seesaw switch
Turns ON/OFF the power line of the dry heater.
Code
Signal
name
Name
Function/Operation
Type
Connector level
PWB name
Note
"L"
"H"
1
1
1
1
WH-SW
DSW-L
MPSW
DSW-F
MSW
DSW-R
Summary of Contents for AR-M550N
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