Sharp AR-M550 (serv.man10) Service Manual ▷ View online
AR-M550/M620 EXTERNAL VIEW AND INTERNAL STRUCTURE 5 - 7
M2PED
M2PED
Paper empty detector (Paper
feed tray 4)
feed tray 4)
Paper empty detection (Paper
feed tray 4)
feed tray 4)
Transmission type
Paper empty
Paper present
PCU
PWB
PWB
Paper feed tray
system sensor
system sensor
M2PFD
M2PFD
Paper pass detector (Paper
feed tray 4)
feed tray 4)
Paper feed tray 4 paper pass
detection
detection
Transmission type
Paper pass
-
PCU
PWB
PWB
Paper transport
system sensor
system sensor
MPED
MPED
Manual feed paper empty
detector
detector
Manual paper feed tray paper
empty detection
empty detection
Transmission type
Paper empty
Paper present
PCU
PWB
PWB
Manual paper feed
unit
unit
MPFD1
MPFD1
Manual feed paper pass
detector 1
detector 1
Manual tray paper pass
detection
detection
Transmission type
Paper pass
-
PCU
PWB
PWB
Paper transport
system sensor
system sensor
MPFD2
MPFD2
Manual feed paper pass
detector 2
detector 2
Manual tray and LCC paper
pass detection
pass detection
Transmission type
Paper pass
-
PCU
PWB
PWB
Paper transport
system sensor
system sensor
MPFPWS
MPFPWS
Manual feed paper width
detector
detector
Manual feed paper width
detection
detection
Volume resistor
-
-
PCU
PWB
PWB
Analog detector
MPLD1
MPLD1
Manual feed paper length
detector 1
detector 1
Manual paper feed tray paper
length detection (Paper feed
side)
length detection (Paper feed
side)
Transmission type
-
Paper present
PCU
PWB
PWB
Manual paper feed
unit
unit
MPLD2
MPLD2
Manual feed paper length
detector 2
detector 2
Manual paper feed tray paper
length detection (Outside)
length detection (Outside)
Transmission type
-
Paper present
PCU
PWB
PWB
Manual paper feed
unit
unit
MPRD1
MPRD1
Paper feed tray 2 paper pass
detector 1
detector 1
Manual feed/paper feed tray 2
paper pass detection
paper pass detection
Transmission type
Paper pass
-
PCU
PWB
PWB
Paper transport
system sensor
system sensor
MPRD2
MPRD2
Paper feed tray 2 paper pass
detector 2
detector 2
Manual feed/paper feed tray 2
paper pass detection
paper pass detection
Transmission type
Paper pass
-
PCU
PWB
PWB
Paper transport
system sensor
system sensor
MTOP1
MTOP1
Manual tray pull-out position
detector 1
detector 1
Manual paper feed tray pull-out
position detection (Storing
position)
position detection (Storing
position)
Contact type
Storage
-
PCU
PWB
PWB
Manual paper feed
unit
unit
MTOP2
MTOP2
Manual tray pull-out position
detector 2
detector 2
Manual paper feed tray pull-out
position detection (Pull-out
position)
position detection (Pull-out
position)
Contact type
Pull-out
-
PCU
PWB
PWB
Manual paper feed
unit
unit
PFD2
PFD2
Paper pass detector 2
Paper pass detection from
duplex (ADU)/LCC/Desk
section
duplex (ADU)/LCC/Desk
section
Transmission type
Paper pass
-
PCU
PWB
PWB
Paper transport
system sensor
system sensor
POD1
POD1
Paper exit detector 1
Paper exit detection from
fusing
fusing
Transmission type
Paper pass
-
PCU
PWB
PWB
Paper transport
system sensor
system sensor
POD2
POD2
Paper exit detector 2
Paper pass detection from
paper exit
paper exit
Transmission type
Paper pass
-
PCU
PWB
PWB
Paper transport
system sensor
system sensor
POD3
POD3
Paper exit detector 3
Paper exit detection to upper
section paper exit tray (Full
detection)
section paper exit tray (Full
detection)
Transmission type
Paper pass
-
PCU
PWB
PWB
Paper transport
system sensor
system sensor
PPD
PPD
Resist roller front paper pass
detector
detector
Paper pass detection in front of
resist roller
resist roller
Reflection type
Paper pass
-
PCU
PWB
PWB
Paper transport
system sensor
system sensor
SPED1
SPED1
SPF document upper limit
detector
detector
SPF document upper limit
detection
detection
Transmission type
Paper present
SCN
PWB
PWB
Sensor
SPED2
SPED2
SPF document empty detector SPF document empty
detection
Transmission type
Paper present
SCN
PWB
PWB
Sensor
SPLS1
SPLS1
SPF document length detector
1
1
SPF document length
detection (Short)
detection (Short)
Transmission type
Paper present
SCN
PWB
PWB
Sensor
SPLS2
SPLS2
SPF document length detector
2
2
SPF document length
detection (Long)
detection (Long)
Transmission type
Paper present
SCN
PWB
PWB
Sensor
SPOD
SPOD
SPF paper exit detector
SPF paper exit detection
Transmission type
Paper exit
SCN
PWB
PWB
Sensor
SPPD1
SPPD1
SPF document paper pass
detector 1
detector 1
SPF document paper pass
detection 1
detection 1
Transmission type
Paper present
SCN
PWB
PWB
Sensor
SPPD2
SPPD2
SPF document paper pass
detector 2
detector 2
SPF document paper pass
detection 2
detection 2
Transmission type
Paper present
SCN
PWB
PWB
Sensor
SPPD3
SPPD3
SPF document paper pass
detector 3
detector 3
SPF document paper pass
detection 3
detection 3
Transmission type
Paper present
SCN
PWB
PWB
Sensor
SPPD4
SPPD4
SPF document paper pass
detector 4
detector 4
SPF document paper pass
detection 4
detection 4
Transmission type
Paper present
SCN
PWB
PWB
Sensor
SPWS
SPWS
SPF document size (Width)
detection analog data detector
detection analog data detector
SPF document size (Width)
detection
detection
Volume resistor
-
-
SCN
PWB
PWB
Other detector
STLD
STLD
SPF document tray lower limit
detector
detector
SPF document tray lower limit
detection
detection
Transmission type
Lower limit
SCN
PWB
PWB
Sensor
STUD
STUD
SPF document tray upper limit
detector
detector
SPF document tray upper limit
detection
detection
Transmission type
Upper limit
SCN
PWB
PWB
Sensor
T1LUD
T1LUD
Paper feed tray upper limit
detector (Paper feed tray 1)
detector (Paper feed tray 1)
Paper feed tray upper limit
(Paper feed tray 1)
(Paper feed tray 1)
Transmission type
Upper limit
-
PCU
PWB
PWB
Paper feed tray
system sensor
system sensor
T1PED
T1PED
Paper empty detector (Paper
feed tray 1)
feed tray 1)
Paper presence detection
(Paper feed tray 1)
(Paper feed tray 1)
Transmission type
Paper empty
Paper present
PCU
PWB
PWB
Paper feed tray
system sensor
system sensor
T1PPD
T1PPD
Paper pass detector (Paper
feed tray 1)
feed tray 1)
Paper pass detection from
paper feed tray 1
paper feed tray 1
Transmission type
Paper pass
-
PCU
PWB
PWB
Paper transport
system sensor
system sensor
T2LUD
T2LUD
Paper feed tray upper limit
detector (Paper feed tray 2)
detector (Paper feed tray 2)
Paper feed tray upper limit
(Paper feed tray 2)
(Paper feed tray 2)
Transmission type
Upper limit
-
PCU
PWB
PWB
Paper feed tray
system sensor
system sensor
Code
Signal
name
Name
Function/Operation
Type
Connector level
PWB
name
Note
"L"
"H"
AR-M550/M620 EXTERNAL VIEW AND INTERNAL STRUCTURE 5 - 8
T2PED
T2PED
Paper empty detector (Paper
feed tray 2)
feed tray 2)
Paper presence detection
(Paper feed tray 2)
(Paper feed tray 2)
Transmission type
Paper empty
Paper present
PCU
PWB
PWB
Paper feed tray
system sensor
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
signal
OPC drum mark detection
Reflection type
-
-
PCU PWB
Analog detector
DSW-ADU
DSW-ADU
Duplex (ADU) cover open/close
detector
detector
Duplex (ADU) cover open/close
detection
detection
Transmission
type
type
Duplex (ADU)
door open
door open
Duplex (ADU)
door open
close
door open
close
PCU PWB
Door switch
DSW-DSK
DSW-DSK
Left door open/close detector
(Desk section)
(Desk section)
Left door open/close detection
(Desk section)
(Desk section)
Transmission
type
type
Desk left door
open
open
Desk left door
close
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
left door open
Front door and
left door open
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
door open,
manual paper
feed unit pull-
out
Left door, front
door close
manual paper
feed unit close
door close
manual paper
feed unit close
PCU PWB
Door switch
DSW-R
DSW-R
Manual feed open/close
detector
detector
Manual feed open/close detection Micro switch
(NC)
Left door open
or manual unit
pulled out
or manual unit
pulled out
Manual unit
insertion
insertion
PCU PWB
Door switch
HUS-DV
HUS-DV
Developing humidity sensor
Developing section peripheral
humidity detection
humidity detection
Humidity
sensor
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
RTH2
THPS2
THPS2
TLS
TLS
TH-EX
TH-EX
HUS-DV
HUS-DV
TH-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
TH-DV
TFSD
T1SPD
TANSET
M1SPD
M1SS1
M1SS2
M1SS2
M1SS3
M1SS3
M1SS4
M1PWS
M2SPD
T2SPD
TCS
RTH3
RTH1
RTH2
RTH2
TH-CL
DMS
PCS
DSW-F
DSW-R
TH
PDSELX
LEDX
HUS-TC
M1SS2
M1SS3
M2SS1
M2SS4
M2SS2
M2SS2
M2SS3
M2SS3
M2SS2
M2SS3
AR-M550/M620 EXTERNAL VIEW AND INTERNAL STRUCTURE 5 - 9
HUS-TC
HUS-TC
Process humidity sensor
Process section peripheral
humidity detection
humidity detection
Humidity
sensor
sensor
-
-
PCU PWB
Analog detector
(Not used)
(Not used)
LEDX
LEDX
Document size sensor (Light
emitting) (LED)
emitting) (LED)
Document size detection LED
LED
-
-
SCN PWB
Other detector
M1PWS
M1PWS
Paper feed tray paper width
detector (Paper feed tray 3)
detector (Paper feed tray 3)
Multi paper feed tray paper width
detection (Paper feed tray 3)
detection (Paper feed tray 3)
Slide resistor
-
-
PCU PWB
Analog detector
M1SPD
M1SPD
Paper remaining quantity
detector (Paper feed tray 3)
detector (Paper feed tray 3)
Paper remaining quantity
detection (Paper feed tray 3)
detection (Paper feed tray 3)
Transmission
type
type
-
Remaining
paper quantity
66% or less
paper quantity
66% or less
PCU PWB
Paper feed tray
remaining quantity
sensor
remaining quantity
sensor
M1SS1
M1SS1
Paper size detector (Paper feed
tray 3)
tray 3)
Paper size detection by
combination of ON/OFF of MISS1
- 4
combination of ON/OFF of MISS1
- 4
Tact switch
PCU PWB
Multi paper feed
tray vertical size
detection (Refer
to the separate
table (*1).)
tray vertical size
detection (Refer
to the separate
table (*1).)
M1SS2
M1SS2
Paper size detector (Paper feed
tray 3)
tray 3)
Paper size detection by
combination of ON/OFF of MISS1
- 4
combination of ON/OFF of MISS1
- 4
Tact switch
PCU PWB
Multi paper feed
tray vertical size
detection (Refer
to the separate
table (*1).)
tray vertical size
detection (Refer
to the separate
table (*1).)
M1SS3
M1SS3
Paper size detector (Paper
feed tray 3)
Paper size detection by
combination of ON/OFF of MISS1
- 4
combination of ON/OFF of MISS1
- 4
Tact switch
PCU PWB
Multi paper feed
tray vertical size
detection (Refer
to the separate
table (*1).)
tray vertical size
detection (Refer
to the separate
table (*1).)
M1SS4
M1SS4
Paper size detector (Paper
feed tray 3)
Paper size detection by
combination of ON/OFF of MISS1
- 4
combination of ON/OFF of MISS1
- 4
Tact switch
PCU PWB
Multi paper feed
tray vertical size
detection (Refer
to the separate
table (*1).)
tray vertical size
detection (Refer
to the separate
table (*1).)
M2SPD
M2SPD
Paper remaining quantity
detector (Paper feed tray 4)
detector (Paper feed tray 4)
Paper remaining quantity
detection (Paper feed tray 4)
detection (Paper feed tray 4)
Transmission
type
type
-
Remaining
paper quantity
66% or less
paper quantity
66% or less
PCU PWB
Paper feed tray
remaining quantity
sensor
remaining quantity
sensor
M2SS1
M2SS1
Paper size detector (Paper feed
tray 4)
tray 4)
Paper size detection by
combination of ON/OFF of MISS1
- 4
combination of ON/OFF of MISS1
- 4
Tact switch
PCU PWB
Multi paper feed
tray vertical size
detection (Refer
to the separate
table (*1).)
tray vertical size
detection (Refer
to the separate
table (*1).)
M2SS2
M2SS2
Paper size detector (Paper
feed tray 4)
Paper size detection by
combination of ON/OFF of MISS1
- 4
combination of ON/OFF of MISS1
- 4
Tact switch
PCU PWB
Multi paper feed
tray vertical size
detection (Refer
to the separate
table (*1).)
tray vertical size
detection (Refer
to the separate
table (*1).)
M2SS3
M2SS3
Paper size detector (Paper feed
tray 4)
tray 4)
Paper size detection by
combination of ON/OFF of MISS1
- 4
combination of ON/OFF of MISS1
- 4
Tact switch
PCU PWB
Multi paper feed
tray vertical size
detection (Refer
to the separate
table (*1).)
tray vertical size
detection (Refer
to the separate
table (*1).)
M2SS4
M2SS4
Paper size detector (Paper feed
tray 4)
tray 4)
Paper size detection by
combination of ON/OFF of MISS1
- 4
combination of ON/OFF of MISS1
- 4
Tact switch
PCU PWB
Multi paper feed
tray vertical size
detection (Refer
to the separate
table (*1).)
tray vertical size
detection (Refer
to the separate
table (*1).)
MHPS
MHPS
Scanner home position sensor
Scanner home position detection
Transmission
type
type
Home position
PCU PWB
Sensor
OCSW
OCSW
SPF open/close detector
Document size detection trigger
Transmission
type
type
Close
SCN PWB
Sensor
PCS
PCS
Image density sensor
Detection of density of toner patch
on the OPC drum
on the OPC drum
Reflection type
-
-
PCU PWB
Analog detector
PDSELX
PDSELX
Document size sensor (Light
reception) (PT)
reception) (PT)
Document size detection
Photo
transistor
transistor
-
-
SCN PWB
Other detector
RTH1
RTH1
Heat roller temperature sensor
Heat roller temperature detection
Thermistor
-
-
PCU PWB
Analog detector
RTH2
RTH2
Pressure roller temperature
sensor
sensor
Pressure roller temperature
detection
detection
Thermistor
-
-
PCU PWB
Analog detector
RTH3
RTH3
Sub heat roller temperature
sensor
sensor
Sub heat roller temperature
detection
detection
Thermistor
-
-
PCU PWB
Analog detector
SCOV
SCOV
SPF cover switch
SPF cover open/close detection
Transmission
type
type
Close
SCN PWB
Sensor
SOCD
SOCD
SPF open/close detector
SPF unit open/close detection
Transmission
type
type
Close
SCN PWB
Sensor
T1SPD
T1SPD
Paper remaining quantity
detector (Paper feed tray 1)
detector (Paper feed tray 1)
Paper remaining quantity
detection (Paper feed tray 1)
detection (Paper feed tray 1)
Transmission
type
type
-
Remaining
paper quantity
50% or less
paper quantity
50% or less
PCU PWB
Paper feed tray
remaining quantity
sensor
remaining quantity
sensor
T2SPD
T2SPD
Paper remaining quantity
detector (Paper feed tray 2)
detector (Paper feed tray 2)
Paper remaining quantity
detection (Paper feed tray 2)
detection (Paper feed tray 2)
Transmission
type
type
-
Remaining
paper quantity
33% or less
paper quantity
33% or less
PCU PWB
Paper feed tray
remaining quantity
sensor
remaining quantity
sensor
Code
Signal
name
Name
Function/Operation
Type
Connector level
PWB name
Note
"L"
"H"
AR-M550/M620 EXTERNAL VIEW AND INTERNAL STRUCTURE 5 - 10
B. Switch
TANSET
TANSET
Paper feed tray 1/2 detection
signal
signal
Paper feed tray 1, 2 (Tandem tray)
insertion detection
insertion detection
Transmission
type
type
Pull-out
Insertion
PCU PWB
Paper feed tray
system sensor
system sensor
TCS
TCS
Toner density sensor
Toner density detection
Magnetic
sensor
sensor
-
-
PCU PWB
Analog detector
TFSD
TFSD
Toner remaining quantity
sensor
sensor
Toner hopper toner remaining
quantity detection
quantity detection
Magnetic
sensor
sensor
Remaining
quantity great
quantity great
Remaining
quantity small
quantity small
PCU PWB
Other sensor,
switch
switch
TH
TH
LCD thermistor
LCD section temperature
detection
detection
Thermistor
-
-
SCN PWB
Other detector
TH-CL
TH-CL
OPC drum temperature sensor
OPC drum peripheral temperature
detection
detection
Thermistor
-
-
PCU PWB
Analog detector
TH-DV
TH-DV
Developing temperature/
humidity sensor
humidity sensor
Developing section temperature
detection
detection
Thermistor/
humidity
humidity
-
-
PCU PWB
Analog detector
(Not used)
(Not used)
TH-EX
TH-EX
Paper exit unit temperature
sensor
sensor
Paper exit unit peripheral
temperature detection
temperature detection
Thermistor
-
-
PCU PWB
Analog detector
TH-RA
TH-RA
Machine temperature sensor
Machine temperature detection/
paper exit section temperature
detection (Cooling fan operation
monitor)
paper exit section temperature
detection (Cooling fan operation
monitor)
Thermistor
-
-
PCU PWB
Analog detector
(Not used)
(Not used)
THPS1
THPS1
Transfer belt contact/separation
home position sensor 1
home position sensor 1
Transfer belt separation home
position detection 1
position detection 1
Transmission
type
type
-
Contact
PCU PWB
THPS2
THPS2
Transfer belt contact/separation
home position sensor 2
home position sensor 2
Transfer belt separation home
position detection 2
position detection 2
Transmission
type
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
switch
TNCA
TNCA
Waste toner full detection signal Waste toner full detection
Magnetic
sensor
sensor
-
-
PCU PWB
Not used.
Code
Signal
name
Name
Type
Function/Operation
Active
condition
MODEL
NOTE
DSW-F
DSW-F
Front door open/close
switch
switch
Micro switch
Front door open/close detection, Main
charger power source, Developing bias
power line open/close
charger power source, Developing bias
power line open/close
DSW-L
DSW-L
Left door open/close
switch
switch
Micro switch
Left door open/close detection, Main
charger power source, Developing bias
power line open/close
charger power source, Developing bias
power line open/close
DSW-R
DSW-R
Manual paper feed
unit open/close switch
unit open/close switch
Micro switch
Manual paper feed unit open/close
detection, Main charger power source,
Developing bias power line 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.)
source. (Turns ON/OFF the engine power
source except for the sub DC power
source.)
Shut-off
solenoid
built-in
solenoid
built-in
WH-SW
WH-SW
Dry heater switch
Seesaw switch
Turns ON/OFF the power line of the dry
heater.
heater.
Code
Signal
name
Name
Function/Operation
Type
Connector level
PWB name
Note
"L"
"H"
WH-SW
DSW-L
MPSW
DSW-F
MSW
DSW-R
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