Sharp MX-M623U / MX-M753U (serv.man10) Service Manual ▷ View online
MX-M753N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 8
M1PFD
Paper pass detector
(Paper feed tray 3)
(Paper feed tray 3)
Paper feed tray 3 paper pass detection
Transmission
type
type
Paper pass
–
Paper transport
system sensor
system sensor
M2LUD
Paper tray upper limit detector
(Paper feed tray 4)
(Paper feed tray 4)
Paper tray upper limit detection
(Paper feed tray 4)
(Paper feed tray 4)
Transmission
type
type
–
Upper limit
detection
detection
Paper feed tray
system sensor
system sensor
M2PED
Paper tray upper limit detector
(Paper feed tray 4)
(Paper feed tray 4)
Paper empty detection
(Paper feed tray 4)
(Paper feed tray 4)
Transmission
type
type
Paper
empty
empty
Paper
present
present
Paper feed tray
system sensor
system sensor
M2PFD
Paper pass detector
(Paper feed tray 4)
(Paper feed tray 4)
Paper feed tray 4 paper pass detection
Transmission
type
type
Paper pass
–
Paper transport
system sensor
system sensor
MPED
Manual feed paper empty detector
Manual paper feed tray paper empty
detection
detection
Transmission
type
type
Paper
present
present
Paper
empty
empty
Manual paper
feed unit
feed unit
MPFD1
Manual feed paper pass detector 1
Manual tray paper pass detection
Transmission
type
type
Paper pass
–
Paper transport
system sensor
system sensor
MPFD2
Manual feed paper pass detector 2
Manual tray and LCC paper pass
detection
detection
Transmission
type
type
Paper pass
–
Paper transport
system sensor
system sensor
MPFPWS
Manual feed paper width detector
Manual feed paper width detection
Volume
resistor
resistor
–
–
Analog detector
MPLD1
Manual feed paper length detector 1
Manual paper feed tray paper length
detection (Paper feed side)
detection (Paper feed side)
Transmission
type
type
–
Paper
present
present
Manual paper
feed unit
feed unit
MPLD2
Manual feed paper length detector 2
Manual paper feed tray paper length
detection (Outside)
detection (Outside)
Transmission
type
type
–
Paper
present
present
Manual paper
feed unit
feed unit
MPRD1
Paper feed tray 2 paper pass
detector 1
detector 1
Manual feed/paper feed tray 2/
LCC paper pass detection
LCC paper pass detection
Transmission
type
type
Paper pass
–
Paper transport
system sensor
system sensor
MPRD2
Paper feed tray 2 paper pass
detector 2
detector 2
Manual feed/paper feed tray 2/
LCC paper pass detection
LCC paper pass detection
Transmission
type
type
Paper pass
–
Paper transport
system sensor
system sensor
MTOP1
Manual tray pull-out position
detector 1
detector 1
Manual paper feed tray pull-out position
detection (Storing position)
detection (Storing position)
Contact type
Storage
–
Manual paper
feed unit
feed unit
MTOP2
Manual tray pull-out position
detector 2
detector 2
Manual paper feed tray pull-out position
detection (Pull-out position)
detection (Pull-out position)
Contact type
Pull-out
–
Manual paper
feed unit
feed unit
PFD2
Paper pass detector 2
Paper pass detection (Left door unit) from
duplex (ADU)/
No.1, 3, 4 paper feed
duplex (ADU)/
No.1, 3, 4 paper feed
Transmission
type
type
Paper pass
–
Paper transport
system sensor
system sensor
POD1
Paper exit detector 1
Paper exit detection from fusing
Transmission
type
type
Paper pass
–
Paper transport
system sensor
system sensor
POD2
Paper exit detector 2
Paper pass detection from paper exit
Transmission
type
type
Paper pass
–
Paper transport
system sensor
system sensor
POD3
Paper exit detector 3
Paper exit detection to upper section
paper exit tray (Full detection)
paper exit tray (Full detection)
Transmission
type
type
–
Paper pass
(Full
detection)
(Full
detection)
Paper transport
system sensor
system sensor
PPD
Resist roller front paper pass
detector
detector
Paper pass detection in front of resist
roller
roller
Reflection
type
type
Paper pass
–
Paper transport
system sensor
system sensor
T1LUD
Paper feed tray upper limit detector
(Paper feed tray 1)
(Paper feed tray 1)
Paper feed tray upper limit
(Paper feed tray 1)
(Paper feed tray 1)
Transmission
type
type
Upper limit
–
Paper feed tray
system sensor
system sensor
T1PED
Paper empty detector
(Paper feed tray 1)
(Paper feed tray 1)
Paper presence detection
(Paper feed tray 1)
(Paper feed tray 1)
Transmission
type
type
Paper
empty
empty
Paper
present
present
Paper feed tray
system sensor
system sensor
T1PPD
Paper pass detector
(Paper feed tray 1)
(Paper feed tray 1)
Paper pass detection from paper feed
tray 1
tray 1
Reflection
type
type
Paper pass
–
Paper transport
system sensor
system sensor
T2LUD
Paper feed tray upper limit detector
(Paper feed tray 2)
(Paper feed tray 2)
Paper feed tray upper limit
(Paper feed tray 2)
(Paper feed tray 2)
Transmission
type
type
Upper limit
–
Paper feed tray
system sensor
system sensor
T2PED
Paper empty detector
(Paper feed tray 2)
(Paper feed tray 2)
Paper presence detection
(Paper feed tray 2)
(Paper feed tray 2)
Transmission
type
type
Paper
empty
empty
Paper
present
present
Paper feed tray
system sensor
system sensor
Signal name
Name
Function/Operation
Type
Connector level
NOTE
“L”
“H”
MX-M753N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 9
DSW-R
DSW-L
TH-CL
PCS
WEBEND1
THPS2
TLS
TNCA
TCS
TANSET
DSW-ADU
M1PWS
M1SS4
M2SS4
LEDX
HUD-RA
DSW-ADU
DSW-L
THPS2
DSW-DSK
TLS
HUD-DV
TH-DV
TH-DV
HUD-DV
TH-DV
TH-DV
TH-RA
TFSD
TNFS
T1SPD
TANSET
M1SPD
M1SS1
M1SS2
M1SS3
M1SS4
M1PWS
M2SPD
T2SPD
TCS
WEBEND1
WEBEND2
WEBEND2
TH_UM
TH_US
TH_US
TH-CL
PCS
DSW-F
DSW-R
M1SS2
M1SS3
M2SS1
M2SS4
M2SS2
M2SS3
M2SS2
M2SS3
OCSW
MHPS
Signal name
Name
Function/Operation
Type
Connector level
NOTE
“L”
“H”
DSW-ADU
Duplex (ADU) cover open/
close detector
close detector
Duplex (ADU) cover open/close
detection
detection
Transmission
type
type
Duplex
(ADU) door
open
(ADU) door
open
Duplex
(ADU) door
open close
(ADU) door
open close
Door switch
DSW-DSK
Left door open/close
detector (Desk section)
detector (Desk section)
Left door open/close detection
(Desk section)
(Desk section)
Transmission
type
type
Desk left
door open
door open
Desk left
door close
door close
Door switch
DSW-F
Front door open/close
detector
detector
Front door open/close detection
Micro switch
Front door or
left door
open
left door
open
Front door or
left door
close
left door
close
Door switch
DSW-L
Left door open/close
detector
detector
Left door open/close detection
Micro switch
Left door,
front door
open,
manual
paper feed
unit pullout
front door
open,
manual
paper feed
unit pullout
Left door,
front door
close manual
paper feed
unit close
front door
close manual
paper feed
unit close
Door switch
MX-M753N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 10
DSW-R
Manual feed open/close
detector
detector
Manual feed open/close detection
Micro switch
(NC)
(NC)
Left door
open or
manual unit
pulled out
open or
manual unit
pulled out
Manual unit
insertion
insertion
Door switch
HUD-DV
Developing humidity sensor
Developing section peripheral
humidity detection
humidity detection
Humidity
sensor
sensor
–
–
Analog detector
HUD-RA
Room humidity sensor
Room humidity detection
Humidity
sensor
sensor
–
–
Analog detector
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
–
–
Analog detector
M1SPD
Paper remaining quantity
detector (Paper feed tray 3)
detector (Paper feed tray 3)
Paper remaining quantity detection
(Paper feed tray 3)
(Paper feed tray 3)
Transmission
type
type
–
Remaining
paper
quantity 66%
or less
paper
quantity 66%
or less
Paper feed tray
remaining quantity
sensor
remaining quantity
sensor
M1SS1
Paper size detector
(Paper feed tray 3)
(Paper feed tray 3)
Paper size detection by combination
of ON/OFF of MISS 1 – 4
of ON/OFF of MISS 1 – 4
Contact
switch
switch
Multi paper feed tray
vertical size detection
(Refer to the separate
table in the “[11] SIGNAL
NAME LIST” (*1).)
vertical size detection
(Refer to the separate
table in the “[11] SIGNAL
NAME LIST” (*1).)
M1SS2
Paper size detector
(Paper feed tray 3)
(Paper feed tray 3)
Paper size detection by combination
of ON/OFF of MISS 1 – 4
of ON/OFF of MISS 1 – 4
Multi paper feed tray
vertical size detection
(Refer to the separate
table in the “[11] SIGNAL
NAME LIST” (*1).)
vertical size detection
(Refer to the separate
table in the “[11] SIGNAL
NAME LIST” (*1).)
M1SS3
Paper size detector
(Paper feed tray 3)
(Paper feed tray 3)
Paper size detection by combination
of ON/OFF of MISS 1 – 4
of ON/OFF of MISS 1 – 4
Multi paper feed tray
vertical size detection
(Refer to the separate
table in the “[11] SIGNAL
NAME LIST” (*1).)
vertical size detection
(Refer to the separate
table in the “[11] SIGNAL
NAME LIST” (*1).)
M1SS4
Paper size detector
(Paper feed tray 3)
(Paper feed tray 3)
Paper size detection by combination
of ON/OFF of MISS 1 – 4
of ON/OFF of MISS 1 – 4
Multi paper feed tray
vertical size detection
(Refer to the separate
table in the “[11] SIGNAL
NAME LIST” (*1).)
vertical size detection
(Refer to the separate
table in the “[11] SIGNAL
NAME LIST” (*1).)
M2SPD
Paper remaining quantity
detector (Paper feed tray 4)
detector (Paper feed tray 4)
Paper remaining quantity detection
(Paper feed tray 4)
(Paper feed tray 4)
Transmission
type
type
–
Remaining
paper
quantity 66%
or less
paper
quantity 66%
or less
Paper feed tray
remaining quantity
sensor
remaining quantity
sensor
M2SS1
Paper size detector
(Paper feed tray 4)
(Paper feed tray 4)
Paper size detection by combination
of ON/OFF of MISS 1 – 4
of ON/OFF of MISS 1 – 4
Contact
switch
switch
Multi paper feed tray
vertical size detection
(Refer to the separate
table in the “[11] SIGNAL
NAME LIST” (*1).)
vertical size detection
(Refer to the separate
table in the “[11] SIGNAL
NAME LIST” (*1).)
M2SS2
Paper size detector
(Paper feed tray 4)
(Paper feed tray 4)
Paper size detection by combination
of ON/OFF of MISS 1 – 4
of ON/OFF of MISS 1 – 4
Multi paper feed tray
vertical size detection
(Refer to the separate
table in the “[11] SIGNAL
NAME LIST” (*1).)
vertical size detection
(Refer to the separate
table in the “[11] SIGNAL
NAME LIST” (*1).)
M2SS3
Paper size detector
(Paper feed tray 4)
(Paper feed tray 4)
Paper size detection by combination
of ON/OFF of MISS 1 – 4
of ON/OFF of MISS 1 – 4
Multi paper feed tray
vertical size detection
(Refer to the separate
table in the “[11] SIGNAL
NAME LIST” (*1).)
vertical size detection
(Refer to the separate
table in the “[11] SIGNAL
NAME LIST” (*1).)
M2SS4
Paper size detector
(Paper feed tray 4)
(Paper feed tray 4)
Paper size detection by combination
of ON/OFF of MISS 1 – 4
of ON/OFF of MISS 1 – 4
Multi paper feed tray
vertical size detection
(Refer to the separate
table in the “[11] SIGNAL
NAME LIST” (*1).)
vertical size detection
(Refer to the separate
table in the “[11] SIGNAL
NAME LIST” (*1).)
MHPS
Scanner home position
sensor detector
sensor detector
Scanner home position detection
Transmission
type
type
Home
position
position
Sensor
OCSW
DSPF open/close detector
Trigger for document size detection.
Transmission
type
type
Close
Sensor
PCS
Image density sensor
Detection of density of toner patch on
the OPC drum
the OPC drum
Reflection
type
type
–
–
Analog detector
T1SPD
Paper remaining quantity
detector (Paper feed tray 1)
detector (Paper feed tray 1)
Paper remaining quantity detection
(Paper feed tray 1)
(Paper feed tray 1)
Transmission
type
type
–
Remaining
paper
quantity 50%
or less
paper
quantity 50%
or less
Paper feed tray
remaining quantity
sensor
remaining quantity
sensor
T2SPD
Paper remaining quantity
detector (Paper feed tray 2)
detector (Paper feed tray 2)
Paper remaining quantity detection
(Paper feed tray 2)
(Paper feed tray 2)
Transmission
type
type
–
Remaining
paper
quantity 33%
or less
paper
quantity 33%
or less
Paper feed tray
remaining quantity
sensor
remaining quantity
sensor
TANSET
Paper feed tray 1/2
detection signal
detection signal
Paper feed tray 1, 2 (Tandem tray)
insertion detection
insertion detection
Transmission
type
type
Pull-out
Insertion
Paper feed tray system
sensor
sensor
Signal name
Name
Function/Operation
Type
Connector level
NOTE
“L”
“H”
MX-M753N EXTERNAL VIEW AND INTERNAL STRUCTURE 4 – 11
H. Switch
TCS
Toner density sensor
Toner density detection
Magnetic
sensor
sensor
–
–
Analog detector
TFSD
Toner remaining quantity
sensor
sensor
Toner hopper toner remaining
quantity detection
quantity detection
Magnetic
sensor
sensor
–
–
Other sensor, switch
TH-CL
OPC drum temperature
sensor
sensor
OPC drum peripheral temperature
detection
detection
Thermistor
–
–
Analog detector
TH-DV
Developing temperature
sensor
sensor
Developing section temperature
detection
detection
Thermistor/
humidity
humidity
–
–
Analog detector
TH-RA
Room temperature sensor
Room temperature detection
Thermistor
–
–
Analog detector
TH_UM
Heat roller temperature
sensor (Center section)
sensor (Center section)
Heat roller temperature detection
(Center section)
(Center section)
Thermistor
–
–
Analog detector
TH_US
Heat roller temperature
sensor (Edge section)
sensor (Edge section)
Heat roller temperature detection
(Edge section)
(Edge section)
Thermistor
–
–
Analog detector
THPS2
Transfer belt contact/
separation home position
sensor 2
separation home position
sensor 2
Transfer belt separation home
position detection 2
position detection 2
Transmission
type
type
–
Contact
Other sensor, switch
TLS
Waste toner pipe lock
detector
detector
Waste toner pipe lock detection
Lead type
–
Lock (Tilt)
Other sensor, switch
TNFS
Waste toner full sensor
Waste toner full detection
Magnetic
sensor
sensor
Toner empty
Toner
presence
presence
WEBEND1
Web end sensor
Detects the upper web paper end
(replacement)
(replacement)
Transmission
type
type
–
End
detection
detection
WEBEND2
Web end sensor
Detects the lower web paper end
(replacement)
(replacement)
Transmission
type
type
–
End
detection
detection
Signal name
Name
Function/Operation
Type
Connector level
NOTE
“L”
“H”
Signal name
Name
Type
Function/Operation
DSW-F
Front door open/close switch
Micro switch
Front door open/close detection, Main charger power source, Developing bias
power line open/close
power line open/close
DSW-L
Left door open/close switch
Micro switch
Left door open/close detection, Main charger power source, Developing bias
power line open/close
power line open/close
DSW-R
Manual paper feed unit open/
close switch
close switch
Micro switch
Manual paper feed unit open/close detection, Main charger power source,
Developing bias power line open/close
Developing bias power line open/close
MPSW
Main power switch
Seesaw switch
Turns ON/OFF all the power sources.
PWRSW
Operation panel power switch
Push switch
Turns ON/OFF the main DC power source.
DSW-L
MPSW
DSW-F
DSW-R
PWRSW
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