Sharp AR-M550 (serv.man10) Service Manual ▷ View online
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
AR-M550/M620 EXTERNAL VIEW AND INTERNAL STRUCTURE 5 - 11
C. Clutch/solenoid
Code
Signal
name
Name
Function/Operation
Type
MODEL
NOTE
DGS
DGS
Paper exit gate solenoid
Paper exit gate drive
Electromagnetic
solenoid
solenoid
DSKLS
DSKLS
Paper guide lock solenoid
Lock the horizontal transport
paper guide.
paper guide.
Electromagnetic
solenoid
solenoid
DSKPFC1
DSKPFC1
Paper feed tray 3/4 paper
transport clutch 1
transport clutch 1
Paper feed tray 3/4 section
paper transport roller ON/OFF
control
paper transport roller ON/OFF
control
Electromagnetic
clutch
clutch
DSKPFC2
DSKPFC2
Paper feed tray 3/4 paper
transport clutch 2
transport clutch 2
Paper transport roller 11 ON/
OFF control
OFF control
Electromagnetic
clutch
clutch
HPFC
HPFC
Horizontal paper transport
clutch
clutch
Manual paper feed, paper feed
tray 1 section paper transport
roller ON/OFF control
tray 1 section paper transport
roller ON/OFF control
Electromagnetic
clutch
clutch
M1PFC
M1PFC
Paper feed clutch (Paper
feed tray 3)
feed tray 3)
Paper freed tray 3 section roller
ON/OFF control
ON/OFF control
Electromagnetic
clutch
clutch
M1PUS
M1PUS
Paper pickup solenoid
(Paper feed tray 3)
(Paper feed tray 3)
Presses the paper pickup roller
onto paper.
onto paper.
Electromagnetic
solenoid
solenoid
M2PFC
M2PFC
Paper feed clutch (Paper
feed tray 4)
feed tray 4)
Paper freed tray 4 section roller
ON/OFF control
ON/OFF control
Electromagnetic
clutch
clutch
M2PUS
M2PUS
Paper pickup solenoid
(Paper feed tray 4)
(Paper feed tray 4)
Presses the paper pickup roller
onto paper.
onto paper.
Electromagnetic
solenoid
solenoid
MFPUS
MFPUS
Paper pickup solenoid
(Manual paper feed)
(Manual paper feed)
Presses the paper pickup roller
onto paper.
onto paper.
Electromagnetic
solenoid
solenoid
MPFC
MPFC
Paper feed clutch (Manual
paper feed)
paper feed)
Manual paper feed section paper
feed roller ON/OFF control
feed roller ON/OFF control
Electromagnetic
clutch
clutch
MPFGS
MPFGS
Manual paper feed gate
solenoid
solenoid
Manual feed gate solenoid open/
close control
close control
Electromagnetic
solenoid
solenoid
PSBC
PSBC
Resist roller brake clutch
Resist roller braking
Electromagnetic
clutch
clutch
PSPS
PSPS
Separation solenoid
OPC drum separation pawl drive
Electromagnetic
solenoid
solenoid
RRC
RRC
Resist roller clutch
Resist roller ON/OFF control
Electromagnetic
clutch
clutch
SPFC
SPFC
SPF paper feed clutch
SPF paper feed section roller
ON/OFF control
ON/OFF control
Electromagnetic
clutch
clutch
MPFC
HPFC
T2PFC
MFPUS
MPFGS
T2PUS
STRC
STRBC
SRRC
SRRBC
DSKLS
M1PFC
T1PFC
PSBC
RRC
DSKPFC1
M2PFC
M1PUS
T1PUS
DSKPFC2
DGS
PSPS
PSPS
STRRBC
STRRC
SPFC
M2PUS
AR-M550/M620 EXTERNAL VIEW AND INTERNAL STRUCTURE 5 - 12
D. Motor
SRRBC
SRRBC
SPF resist roller brake
clutch
clutch
SPF resist roller braking
Electromagnetic
clutch
clutch
SRRC
SRRC
SPF resist roller clutch
SPF resist roller ON/OFF control
Electromagnetic
clutch
clutch
STMPS
STMPS
Stamp solenoid control
signal
signal
Stamp drive
Electromagnetic
solenoid
solenoid
STRBC
STRBC
SPF paper transport roller
2 brake clutch
2 brake clutch
SPF transport roller 2 braking
Electromagnetic
clutch
clutch
STRC
STRC
SPF paper transport roller
2 clutch
2 clutch
SPF transport roller 2 ON/OFF
control
control
Electromagnetic
clutch
clutch
STRRBC
STRRBC
SPF paper transport roller
3 brake clutch
3 brake clutch
SPF transport roller 3 braking
Electromagnetic
clutch
clutch
STRRC
STRRC
SPF paper transport roller
3 clutch
3 clutch
SPF transport roller 3 ON/OFF
control
control
Electromagnetic
clutch
clutch
T1PFC
T1PFC
Paper feed clutch (Paper
feed tray 1)
feed tray 1)
Paper freed tray 1 section roller
ON/OFF control
ON/OFF control
Electromagnetic
clutch
clutch
T1PUS
T1PUS
Paper pickup solenoid
(Paper feed tray 1)
(Paper feed tray 1)
Presses the paper pickup roller
onto paper.
onto paper.
Electromagnetic
solenoid
solenoid
T2PFC
T2PFC
Paper feed clutch (Paper
feed tray 2)
feed tray 2)
Paper freed tray 2 section roller
ON/OFF control
ON/OFF control
Electromagnetic
clutch
clutch
T2PUS
T2PUS
Paper pickup solenoid
(Paper feed tray 2)
(Paper feed tray 2)
Presses the paper pickup roller
onto paper.
onto paper.
Electromagnetic
solenoid
solenoid
Code
Signal
name
Name
Type
Function/Operation
Active
condition
MODEL
NOTE
ADM1
ADM1
Duplex (ADU) motor 1
Stepping motor
Drives the paper feed roller
2 and the paper transport
roller 18.
2 and the paper transport
roller 18.
High speed
ADM2
ADM2
Duplex (ADU) motor 2
Stepping motor
Drives the paper exit rollers
20 and 21.
20 and 21.
Selection of
Normal speed/
High speed
Normal speed/
High speed
DM
DM
OPC drum motor
DC brushless
motor
motor
Drives the OPC drum and
the transfer section.
the transfer section.
DVM
DVM
Developing motor
DC brushless
motor
motor
Drives the developing
section.
section.
Code
Signal
name
Name
Function/Operation
Type
MODEL
NOTE
SPFM
SLUM
SPSM
ADM1
ADM2
TURM
MM
M1LUM
M2LUM
T1LUM
T2LUM
DM
FUM
PGM
MIM
TM2
TM1
POM1
POM2
DVM
VPM
TRM
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