AR-M550 (serv.man10). (5) External view and internal structure - Sharp Copying Equipment Service Manual (repair manual). Page 9

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AR-M550/M620  EXTERNAL VIEW AND INTERNAL STRUCTURE  5 - 8
T2PED
T2PED
Paper empty detector (Paper 
feed tray 2)
Paper presence detection 
(Paper feed tray 2)
Transmission type
Paper empty
Paper present
PCU 
PWB
Paper feed tray 
system sensor
Code
Signal 
name
Name
Function/Operation
Type
Connector level
PWB name
Note
"L"
"H"
CISTH
CISTH
CIS temperature sensor
CIS temperature detection
Thermistor
-
-
SCN PWB
Not used.
DMS
DMS
OPC drum marking sensor 
signal
OPC drum mark detection
Reflection type
-
-
PCU PWB
Analog detector
DSW-ADU
DSW-ADU
Duplex (ADU) cover open/close 
detector
Duplex (ADU) cover open/close 
detection
Transmission 
type
Duplex (ADU) 
door open
Duplex (ADU) 
door open 
close
PCU PWB
Door switch
DSW-DSK
DSW-DSK
Left door open/close detector 
(Desk section)
Left door open/close detection 
(Desk section)
Transmission 
type
Desk left door 
open
Desk left door 
close
PCU PWB
Door switch
DSW-F
DSW-F
Front door open/close detector
Front door open/close detection
Micro switch
Front door and 
left door open
Front door and 
left door open
PCU PWB
Door switch
DSW-L
DSW-L
Left door open/close detector
Left door open/close detection
Micro switch
Left door, front 
door open, 
manual paper 
feed unit pull-
out
Left door, front 
door close
manual paper 
feed unit close
PCU PWB
Door switch
DSW-R
DSW-R
Manual feed open/close 
detector
Manual feed open/close detection Micro switch 
(NC)
Left door open 
or manual unit 
pulled out
Manual unit 
insertion
PCU PWB
Door switch
HUS-DV
HUS-DV
Developing humidity sensor
Developing section peripheral 
humidity detection
Humidity 
sensor
-
-
PCU PWB
Analog detector
Code
Signal 
name
Name
Function/Operation
Type
Connector level
PWB 
name
Note
"L"
"H"
SOCD
SOCD
SCOV
SCOV
DSW-R
DSW-R
DSW-L
DSW-L
TH-CL
TH-CL
DMS
DMS
PCS
PCS
RTH3
RTH3
RTH1
RTH1
RTH2
RTH2
THPS2
THPS2
TLS
TLS
TH-EX
TH-EX
HUS-DV
HUS-DV
TH-DV
TH-DV
TNCA
TNCA
TCS
TCS
TANSET
TANSET
DSW-ADU
DSW-ADU
M1PWS
M1PWS
HUS-TC
HUS-TC
M1SS4
M1SS4
M2SS4
M2SS4
SOCD
OCSW
SCOV
MHPS
MHPS
TH
TH
PDSELX
PDSELX
LEDX
LEDX
MHPS
TH-EX
TH-RA
DSW-ADU
DSW-L
THPS2
DSW-DSK
TLS
HUS-DV
TH-DV
TFSD
T1SPD
TANSET
M1SPD
M1SS1
M1SS2
M1SS2
M1SS3
M1SS3
M1SS4
M1PWS
M2SPD
T2SPD
TCS
RTH3
RTH1
RTH2
TH-CL
DMS
PCS
DSW-F
DSW-R
TH
PDSELX
LEDX
HUS-TC
M1SS2
M1SS3
M2SS1
M2SS4
M2SS2
M2SS2
M2SS3
M2SS3
M2SS2
M2SS3
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