Sharp AR-M550 (serv.man21) Service Manual ▷ View online
AR-M550/M620 SIGNAL NAME LIST 14 - 7
PNC-a
Count-up signal (Personal
counter)
counter)
Count up (Personal counter)
2
20
PCU
POD1
Paper exit detection 1 signal
Paper exit detection from
fusing
fusing
Paper pass
—
5
3
PCU
POD2
Paper exit detection 2 signal
Paper pass detection from
paper exit
paper exit
Paper pass
—
5
9
PCU
POD3
Paper exit detection 3 signal
Paper exit detection to upper
section paper exit tray (Full
detection)
section paper exit tray (Full
detection)
Paper pass
—
5
15
PCU
POF
Power OFF status signal
Power OFF status
Power OFF
Power ON
9
3
PCU
POF_SCN
Power off signal
Power OFF status signal
(Output from PCU)
(Output from PCU)
Power OFF
9
43
SCN
POM1A
Paper exit motor 1 (Fusing
side) control signal (Phase A)
side) control signal (Phase A)
Paper exit unit (Fusing side)
paper transport
paper transport
—
—
10
1
PCU
POM1B
Paper exit motor 1 (Fusing
side) control signal (Phase B)
side) control signal (Phase B)
Paper exit unit (Fusing side)
paper transport
paper transport
—
—
10
3
PCU
POM1XA
Paper exit motor 1 (Fusing
side) control signal (Phase /A)
side) control signal (Phase /A)
Paper exit unit (Fusing side)
paper transport
paper transport
—
—
10
2
PCU
POM1XB
Paper exit motor 1 (Fusing
side) control signal (Phase /B)
side) control signal (Phase /B)
Paper exit unit (Fusing side)
paper transport
paper transport
—
—
10
4
PCU
POM2A
Paper exit motor 2 (Paper exit
side) control signal (Phase A)
side) control signal (Phase A)
Paper exit unit (paper exit side)
paper transport
paper transport
—
—
10
5
PCU
POM2B
Paper exit motor 2 (Fusing
side) control signal (Phase B)
side) control signal (Phase B)
Paper exit unit (paper exit side)
paper transport
paper transport
—
—
10
7
PCU
POM2XA
Paper exit motor 2 (Fusing
side) control signal (Phase /A)
side) control signal (Phase /A)
Paper exit unit (paper exit side)
paper transport
paper transport
—
—
10
6
PCU
POM2XB
Paper exit motor 2 (Fusing
side) control signal (Phase /B)
side) control signal (Phase /B)
Paper exit unit (Paper exit side)
paper transport
paper transport
—
—
10
8
PCU
PPD
Resist roller front paper pass
detection signal
detection signal
Paper pass detection in front of
resist roller
resist roller
Paper pass
—
12
15
PCU
PROFF_CNT BUP-PR control signal (Main
power OFF signal)
Main power OFF signal (output
from controller)
from controller)
—
End
9
4
PCU
PRON_FAX
BUP-PR control signal (Main
power ON signal)
power ON signal)
Main power ON signal (Output
front FAX unit)
front FAX unit)
Boot
—
9
1
PCU
PSBC
Resist roller brake clutch
control signal
control signal
Resist roller brake clutch
control
control
—
Paper
transport
enable
12
11
PCU
PSPS
Separation solenoid control
signal
signal
Separation solenoid control
Separation
—
8
13
PCU
READY
LSU motor lock detection
signal
signal
LSU motor lock detection
Rotation
Stop/Lock
22
5
PCU
READY
Copy enable signal (Auditor)
Copy enable (Auditor)
Copy
enable
5
4
SCN
RES_CCD
Reset signal (CCD)
Reset (CCD)
Reset
1
64
SCN
RES_CIS
Reset signal (CIS)
Reset (CIS)
Reset
10
15
SCN
RES_FIN
Finisher reset signal
Finisher reset
Operation
enable
Reset
17
19
PCU
RES_LCC
LCC reset signal
LCC reset
Operation
enable
Reset
18
11
PCU
RES_MFP
Main unit reset signal (MFP)
Not used.
Reset
9
12
SCN
RES_SCN
Scanner reset signal
Scanner reset (output from
controller)
controller)
Reset
9
44
SCN
RRC
Resist roller clutch control
signal
signal
Resist roller clutch control (The
relative position of print image
and paper is controlled.)
relative position of print image
and paper is controlled.)
Paper
transport
—
7
4
PCU
RTH1
Heat roller temperature
detection signal
detection signal
Heat roller temperature
detection
detection
—
—
2
6
PCU
RTH2
Pressure roller temperature
detection signal
detection signal
Pressure roller temperature
detection
detection
—
—
2
10
PCU
RTH3
Sub heat roller temperature
detection signal
detection signal
Sub heat roller temperature
detection
detection
—
—
2
14
PCU
RXD_CCD1
Serial I/F data (CCD)
Serial I/F data (CCD-scanner
control PWB)
control PWB)
—
—
1
65
SCN
RXD_CCD2
Serial I/F data (CIS)
Serial I/F data (CCD-scanner
control PWB)
control PWB)
—
—
10
16
SCN
Signal name
Name
Function/Operation
Connector level
Connector
No.
Pin No.
PWB
name
Remark
"L"
"H"
AR-M550/M620 SIGNAL NAME LIST 14 - 8
RXD_FIN
Serial I/F data (FINISHER)
Serial I/F data (Finisher-PCU
PWB)
PWB)
—
—
17
13
PCU
RXD_LCC
Serial I/F data (LCC)
Serial I/F data (LCC-PCU
PWB)
PWB)
—
—
18
5
PCU
RXD_SCN
Serial I/F data (Scanner control
PWB)
PWB)
Serial I/F data (Scanner control
PWB - Controller)
PWB - Controller)
—
—
9
45
SCN
SCNSET
Scanner control PWB
identification signal
identification signal
Scanner control PWB
installation detection
installation detection
Scanner
available
9
47
SCN
SCOV
SPF cover switch signal
SPF cover open/close
detection
detection
Close
12
8
SCN
SEG0
Operation panel LED matrix
signal 0
signal 0
Operation panel LED matrix
—
—
1
24
SCN
SEG1
Operation panel LED matrix
signal 1
signal 1
Operation panel LED matrix
—
—
1
75
SCN
SEG2
Operation panel LED matrix
signal 2
signal 2
Operation panel LED matrix
—
—
1
76
SCN
SLEEP
Energy-saving mode display
signal
signal
LED lighting signal in energy
saving mode
saving mode
LED ON
9
15
SCN
SLUMA
SPF tray lift-up motor control
signal (Phase A)
signal (Phase A)
SPF tray lift-up motor control
(Phase A)
(Phase A)
—
—
11
3
SCN
SLUMB
SPF tray lift-up motor control
signal (Phase B)
signal (Phase B)
SPF tray lift-up motor control
(Phase B)
(Phase B)
—
—
11
4
SCN
SOCD
SPF open/close detection
signal
signal
SPF open/close detection
Close
11
19
SCN
SPED1
SPF document upper limit
detection signal
detection signal
SPF document upper limit
detection
detection
Paper
present
12
12
SCN
SPED2
SPF document detection signal SPF document empty
detection
Paper
present
11
14
SCN
SPFC
SPF paper feed clutch control
signal
signal
SPF paper feed clutch control
ON
11
10
SCN
SPFFAN
SPF fan motor control signal
SPF fan motor control
ON
11
11
SCN
SPFMA
SPF paper feed, paper
transport motor control signal
(Phase A)
transport motor control signal
(Phase A)
SPF paper feed, paper
transport motor control (Phase
A)
transport motor control (Phase
A)
—
—
12
13
SCN
SPFMB
SPF paper feed, paper
transport signal (Phase B)
transport signal (Phase B)
SPF paper feed, paper
transport motor control (Phase
B)
transport motor control (Phase
B)
—
—
12
17
SCN
SPFMO1
SPF paper feed, paper
transport motor current control
signal 1
transport motor current control
signal 1
SPF paper feed, paper
transport motor current control
transport motor current control
Power
down
12
16
SCN
SPFMO2
SPF paper feed, paper
transport motor current control
signal 2
transport motor current control
signal 2
SPF paper feed, paper
transport motor current control
transport motor current control
Power
down
12
18
SCN
SPFSET
SPF identification signal
SPF installation detection
SPF
available
11
5
SCN
SPLS1
SPF document length
detection signal 1
detection signal 1
SPF document length
detection (Short)
detection (Short)
Paper
present
11
18
SCN
SPLS2
SPF document length
detection signal 2
detection signal 2
SPF document length
detection (Long)
detection (Long)
Paper
present
11
17
SCN
SPOD
SPF paper exit detection signal SPF paper exit detection
Paper exit
11
20
SCN
SPPD1
SPF document paper pass
detection 1 signal
detection 1 signal
SPF document paper pass
detection 1
detection 1
Paper
present
12
10
SCN
SPPD2
SPF document paper pass
detection 2 signal
detection 2 signal
SPF document paper pass
detection 2
detection 2
Paper
present
12
6
SCN
SPPD3
SPF document paper pass
detection 3 signal
detection 3 signal
SPF document paper pass
detection 3
detection 3
Paper
present
11
13
SCN
SPPD4
SPF document paper pass
detection 4 signal
detection 4 signal
SPF document paper pass
detection 4
detection 4
Paper
present
11
12
SCN
SPWS
SPF document size (Width)
detection analog data signal
detection analog data signal
SPF document size (Width)
detection
detection
—
—
11
16
SCN
SRRBC
SPF resist roller brake clutch
control signal
control signal
SPF resist roller brake clutch
control
control
ON
11
6
SCN
SRRC
SPF resist roller clutch control
signal
signal
SPF resist roller clutch control
ON
11
7
SCN
START
LSU motor control signal
LSU motor ON/OFF
ON
OFF
22
7
PCU
Signal name
Name
Function/Operation
Connector level
Connector
No.
Pin No.
PWB
name
Remark
"L"
"H"
AR-M550/M620 SIGNAL NAME LIST 14 - 9
STLD
SPF document tray lower limit
detection signal
detection signal
SPF document tray lower limit
detection
detection
Lower limit
11
15
SCN
STMPS
Stamp solenoid control signal
Stamp solenoid control
Stamp ON
1
48
SCN
STRBC
SPF paper transport clutch
control signal
control signal
SPF paper transport roller
brake clutch control
brake clutch control
ON
11
9
SCN
STRC
SPF paper transport clutch
control signal
control signal
SPF paper transport clutch
control
control
ON
11
8
SCN
STRRBC
SPF paper transport resist
brake clutch control signal
brake clutch control signal
SPF paper transport resist
brake clutch control
brake clutch control
ON
12
20
SCN
STRRC
SPF paper transport resist
clutch control signal
clutch control signal
SPF paper transport resist
clutch control
clutch control
ON
12
19
SCN
STSET
Stamp identification signal
Stamp Yes/No detection
Stamp
available
1
47
SCN
STUD
SPF document tray upper limit
detection signal
detection signal
SPF document tray upper limit
detection
detection
Upper limit
12
14
SCN
SYNC
LSU horizontal sync detection
signal
signal
LSU horizontal sync detection
(BD sensor signal)
(BD sensor signal)
—
—
22
29
PCU
T1LUD
Paper feed tray upper limit
detection signal (Paper feed
tray 1)
detection signal (Paper feed
tray 1)
Paper feed tray upper limit
(Paper feed tray 1)
(Paper feed tray 1)
Upper limit
—
14
13
PCU
T1LUM
Paper tray lift-up motor control
signal (Paper feed tray 1)
signal (Paper feed tray 1)
Paper tray lift-up control (Paper
feed tray 1)
feed tray 1)
Stop
Up
14
1
PCU
T1PED
Paper empty detection signal
(Paper feed tray 1)
(Paper feed tray 1)
Paper presence detection
(Paper feed tray 1)
(Paper feed tray 1)
Paper
empty
empty
Paper
present
14
15
PCU
T1PFC
Paper feed clutch control signal
(Paper feed tray 1)
(Paper feed tray 1)
Paper feed clutch control
(Paper feed tray 1)
(Paper feed tray 1)
Paper
transport
—
17
4
PCU
T1PPD
Paper pass detection signal
(Paper feed tray 1)
(Paper feed tray 1)
Paper pass detection from
paper feed tray 1
paper feed tray 1
Paper pass
—
25
3
PCU
T1PUS
Paper pick-up solenoid control
signal (Paper feed tray 1)
signal (Paper feed tray 1)
Paper pickup solenoid control
(Paper feed tray 1)
(Paper feed tray 1)
Roller UP
Paper feed
14
7
PCU
T1SPD
Paper remaining quantity
detection signal (Paper feed
tray 1)
detection signal (Paper feed
tray 1)
Paper remaining quantity
detection (Paper feed tray 1)
detection (Paper feed tray 1)
—
Remaining
paper
quantity
66% or less
14
16
PCU
T2LUD
Paper tray upper limit detection
signal (Paper feed tray 2)
signal (Paper feed tray 2)
Paper tray upper limit detection
(Paper feed tray 2)
(Paper feed tray 2)
Upper limit
—
14
21
PCU
T2LUM
Paper tray lift-up motor control
signal (Paper feed tray 2)
signal (Paper feed tray 2)
Paper tray lift-up motor control
(Paper feed tray 2)
(Paper feed tray 2)
Stop
Up
14
2
PCU
T2PED
Paper empty detection signal
(Paper feed tray 2)
(Paper feed tray 2)
Paper presence detection
(Paper feed tray 2)
(Paper feed tray 2)
Paper
empty
empty
Paper
present
14
23
PCU
T2PFC
Paper clutch control signal
(Paper feed tray 2)
(Paper feed tray 2)
Paper feed clutch control
(Paper feed tray 2)
(Paper feed tray 2)
Paper
transport
—
12
3
PCU
T2PUS
Paper pickup solenoid control
signal (Paper feed tray 2)
signal (Paper feed tray 2)
Paper pickup solenoid control
(Paper feed tray 2)
(Paper feed tray 2)
The roller
lifts up.
Paper feed
14
8
PCU
T2SPD
Paper remaining quantity
detection signal (Paper feed
tray 2)
detection signal (Paper feed
tray 2)
Paper remaining quantity
detection (Paper feed tray 2)
detection (Paper feed tray 2)
—
Remaining
paper
quantity
66% or less
14
22
PCU
TANSET
Paper feed tray 1/2 (Tandem
tray) detection signal
tray) detection signal
Paper feed tray 1, 2 (Tandem
tray) insertion detection
tray) insertion detection
Pull out
Insert
17
25
PCU
TCBIAS
Transfer belt cleaning output
control signal (ON/OFF)
control signal (ON/OFF)
Transfer belt cleaning bias ON/
OFF control
OFF control
ON
OFF
7
22
PCU
TCBPWM
Transfer belt cleaning output
control signal (PWM)
control signal (PWM)
Transfer belt cleaning bias
output voltage PWM control
output voltage PWM control
—
—
7
18
PCU
TCS
Toner density detection signal
Toner density detection
—
—
12
16
PCU
TFSD
Toner remaining quantity
detection signal
detection signal
Toner hopper remaining
quantity detection
quantity detection
Remaining
quantity
large
Remaining
quantity
small
11
11
PCU
TH
LCD temperature sensor signal LCD temperature detection
—
—
1
92
SCN
TH-CL
OPC drum cleaner
temperature sensor signal
temperature sensor signal
OPC drum cleaner peripheral
temperature detection
temperature detection
—
—
8
12
PCU
TH-DV
Developing temperature
detection signal
detection signal
Developing section
temperature detection
temperature detection
—
—
12
30
PCU
TH-EX
Paper exit unit temperature
sensor
sensor
Paper exit unit peripheral
temperature detection
temperature detection
—
—
5
31
PCU
Signal name
Name
Function/Operation
Connector level
Connector
No.
Pin No.
PWB
name
Remark
"L"
"H"
AR-M550/M620 SIGNAL NAME LIST 14 - 10
THPS1
Transfer belt contact/
separation home position
sensor 1
separation home position
sensor 1
Transfer belt separation home
position detection 1
position detection 1
—
Contact
7
6
PCU
Not used.
THPS2
Transfer belt contact/
separation home position
sensor 2
separation home position
sensor 2
Transfer belt separation home
position detection 2
position detection 2
—
Contact
7
14
PCU
TH-RA
Machine temperature detection
signal
signal
Machine temperature detection
—
—
21
10
PCU
THV+PWM
Transfer charger output control
signal (THV)
signal (THV)
Transfer charger output control
(PWM control)
(PWM control)
—
—
15
8
PCU
THV+REM
Transfer charger control signal
(THV)
(THV)
Transfer charger ON/OFF
control
control
ON
OFF
15
9
PCU
TLS
Waste toner pipe lock detection
signal
signal
Waste toner pipe lock detection
—
Lock (Tilt)
8
16
PCU
TM1A
Toner motor 1 control signal
Toner motor 1 ON/OFF control
—
—
11
1
PCU
TM1B
Toner motor 1 control signal
Toner motor 1 ON/OFF control
—
—
11
3
PCU
TM2A
Toner motor 2 control signal
Toner motor 2 ON/OFF control
—
—
11
5
PCU
TM2B
Toner motor 2 control signal
Toner motor 2 ON/OFF control
—
—
11
7
PCU
TNCA
Waste toner full detection
signal
signal
Waste toner full detection
—
—
11
12
PCU
Not used.
TRC_LCC
LCC paper feed timing signal
LCC paper feed timing control
(Output from PCU)
(Output from PCU)
—
—
18
13
PCU
TRMA
Transfer roller 15 drive motor
control signal (Phase A)
control signal (Phase A)
Transport roller 15 drive motor
control
control
—
—
10
17
PCU
TRMB
Transfer roller 15 drive motor
control signal (Phase B)
control signal (Phase B)
Transport roller 15 drive motor
control
control
—
—
10
19
PCU
TRMXA
Transfer roller 15 drive motor
control signal (Phase /A)
control signal (Phase /A)
Transport roller 15 drive motor
control
control
—
—
10
18
PCU
TRMXB
Transfer roller 15 drive motor
control signal (Phase /B)
control signal (Phase /B)
Transport roller 15 drive motor
control
control
—
—
10
20
PCU
TSGOUT
Toner den misty sensor gain
control signal
control signal
Toner density sensor gain
control
control
—
—
12
20
PCU
TURM
Transfer separation motor
control signal
control signal
Transfer unit separation control
Stop
Contact/
Release
Release
7
16
PCU
TXD_CCD1
Serial I/F data (CCD)
Serial I/F data (Scanner control
PWB - CCD)
PWB - CCD)
—
—
1
63
SCN
TXD_CCD2
Serial I/F data (CCD)
Serial I/F data (Scanner control
PWB - CCD)
PWB - CCD)
—
—
10
14
SCN
TXD_FIN
Serial I/F data (Finisher)
Serial I/F data (PCU PWB -
Finisher)
Finisher)
—
—
17
11
PCU
TXD_LCC
Serial I/F data (LCC)
aerial I/F data (Controller -
Scanner control PWB)
Scanner control PWB)
—
—
18
3
PCU
TXD_SCN
Serial I/F data (Scanner control
PWB)
PWB)
Serial I/F data (Controller -
Scanner control PWB)
Scanner control PWB)
—
—
9
8
SCN
VCCW_SCN Scanner flash ROM write
protect signal
Scanner flash ROM write
protect
protect
Write
enable
9
10
SCN
VFM-BKL
Exhaust fan motor control
signal (Rear left)
signal (Rear left)
Exhaust fan motor control
signal (O
signal (O
3
exhaust, process
section heat exhaust)
Max. force
of wind
Stop
5
22
PCU
VFM-BKR
Exhaust fan motor control
signal (Rear right)
signal (Rear right)
Exhaust fan motor control
signal (Exhaust, duplex (ADU)
section cooling)
signal (Exhaust, duplex (ADU)
section cooling)
Max. force
of wind
Stop
6
17
PCU
VFM-EX1
Exhaust fan motor control
signal (LSU top plate front
side)
signal (LSU top plate front
side)
Exhaust fan motor control
signal (O
signal (O
3
exhaust, process
section heat exhaust)
Max. force
of wind
Stop
5
4
PCU
VFM-EX2
Exhaust fan motor control
signal (LSU top plate center)
signal (LSU top plate center)
Exhaust fan motor control
signal (O
signal (O
3
exhaust, process
section heat exhaust)
Max. force
of wind
Stop
5
10
PCU
VFM-EX3
Exhaust fan motor control
signal (LSU top plate rear side)
signal (LSU top plate rear side)
Exhaust fan motor control
signal (O
signal (O
3
exhaust, process
section heat exhaust)
Max. force
of wind
Stop
5
16
PCU
VIDEO
Image signal
Image signal to LSU
—
—
20
21
PCU
VIDEOin-
Image signal
Image signal from controller to
PCU PWB
PCU PWB
—
—
9
21
PCU
Signal name
Name
Function/Operation
Connector level
Connector
No.
Pin No.
PWB
name
Remark
"L"
"H"
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