Sharp AR-M550 (serv.man21) Service Manual ▷ View online
AR-M550/M620 SIGNAL NAME LIST 14 - 5
M1PFC
Paper feed clutch (M1) control
signal (Paper feed tray 3)
signal (Paper feed tray 3)
Paper feed tray 3 paper feed
control
control
Paper
transport
—
16
25
PCU
M1PFD
Paper pass detection signal
(Multi paper feed tray 3)
(Multi paper feed tray 3)
Paper feed tray 3 paper pass
detection
detection
Paper pass
—
16
21
PCU
M1PUS
Paper pickup solenoid control
signal (Paper feed tray 3)
signal (Paper feed tray 3)
Paper pickup roller control
(Paper feed tray 3)
(Paper feed tray 3)
Roller UP
Paper feed
16
3
PCU
M1PWS
Paper feed tray paper width
detection signal (Paper feed
tray 3)
detection signal (Paper feed
tray 3)
Multi paper feed tray paper
width detection (Paper feed
tray 3)
width detection (Paper feed
tray 3)
—
—
16
32
PCU
M1SPD
Paper remaining quantity
detection signal (Paper feed
tray 3)
detection signal (Paper feed
tray 3)
Paper remaining quantity
detection (Multi paper feed tray
3)
detection (Multi paper feed tray
3)
—
Remaining
paper
quantity
66% or less
15
31
PCU
M1SS1
Paper size detection signal
(Paper feed tray 3)
(Paper feed tray 3)
Paper size detection (Paper
feed tray 3)
feed tray 3)
15
21
PCU
Refer to the
separate
table (
separate
table (
∗
1)
M1SS2
Paper size detection signal
(Paper feed tray 3)
(Paper feed tray 3)
Paper size detection (Paper
feed tray 3)
feed tray 3)
15
23
PCU
M1SS3
Paper size detection signal
(Paper feed tray 3)
(Paper feed tray 3)
Paper size detection (Paper
feed tray 3)
feed tray 3)
15
25
PCU
M1SS4
Paper size detection signal
(Paper feed tray 3)
(Paper feed tray 3)
Paper size detection (Paper
feed tray 3)
feed tray 3)
15
27
PCU
M2LUD
Paper tray upper limit detection
signal (Paper feed tray 4)
signal (Paper feed tray 4)
Paper tray upper limit detection
(Paper feed tray 4)
(Paper feed tray 4)
Upper limit
—
16
14
PCU
M2LUM
Lift-up motor control signal
(Paper feed tray 4)
(Paper feed tray 4)
Lift-up motor control (Paper
feed tray 4)
feed tray 4)
Stop
Up
17
1
PCU
M2PED
Paper empty detection signal
(Paper feed tray 4)
(Paper feed tray 4)
Paper empty detection (Paper
feed tray 4)
feed tray 4)
Paper
empty
empty
Paper
present
16
8
PCU
M2PFC
Paper feed clutch (M1) control
signal (Paper feed tray 4)
signal (Paper feed tray 4)
Paper feed tray 4 paper feed
control
control
Paper
transport
—
17
7
PCU
M2PFD
Paper pass detection signal
(Multi paper feed tray 4)
(Multi paper feed tray 4)
Paper feed tray 4 paper pass
detection
detection
Paper pass
—
16
22
PCU
M2PUS
Paper pickup solenoid control
signal (Paper feed tray 4)
signal (Paper feed tray 4)
Paper pickup roller control
(Paper feed tray 4)
(Paper feed tray 4)
Roller UP
Paper feed
16
4
PCU
M2SPD
Paper remaining quantity
detection (Paper feed tray 4)
signal
detection (Paper feed tray 4)
signal
Paper remaining quantity
detection (Paper feed tray 4)
detection (Paper feed tray 4)
—
Remaining
paper
quantity
66% or less
15
32
PCU
M2SS1
Paper size detection signal
(Paper feed tray 4)
(Paper feed tray 4)
Paper size detection (Paper
feed tray 4)
feed tray 4)
15
22
PCU
Refer to the
separate
table (
separate
table (
∗
1)
M2SS2
Paper size detection signal
(Paper feed tray 4)
(Paper feed tray 4)
Paper size detection (Paper
feed tray 4)
feed tray 4)
15
24
PCU
M2SS3
Paper size detection signal
(Paper feed tray 4)
(Paper feed tray 4)
Paper size detection (Paper
feed tray 4)
feed tray 4)
15
26
PCU
M2SS4
Paper size detection signal
(Paper feed tray 4)
(Paper feed tray 4)
Paper size detection (Paper
feed tray 4)
feed tray 4)
15
28
PCU
MFPUS
Paper pickup solenoid (MFP)
control signal (Manual paper
feed)
control signal (Manual paper
feed)
Paper pickup solenoid (MPF)
control (Manual paper feed)
control (Manual paper feed)
Paper feed
with the
roller down
—
13
7
PCU
MHPS
Scanner home position sensor
signal
signal
Scanner home position
detection
detection
Home
position
6
1
SCN
MHVREM
Main charger control signal
Main charger ON/OFF
ON
OFF
15
6
PCU
MHV-T
Main charger trouble detection
signal
signal
Main charger trouble detection
Trouble, no
MHV
Normal
15
7
PCU
MIMA
Scanner motor control signal
(Phase A)
(Phase A)
Scanner motor control (Phase
A)
A)
—
—
7
1
SCN
MIMB
Scanner motor control signal
(Phase B)
(Phase B)
Scanner motor control (Phase
B)
B)
—
—
7
2
SCN
MM
Main motor control signal
Main motor ON/OFF control
ON
OFF
17
14
PCU
MMCLK
Main motor rotating speed
control (CLK) signal
control (CLK) signal
Main motor RPM control
—
—
17
16
PCU
MM-T
Main motor lock detection
signal
signal
Main motor lock detection
Rotation
Stop/Lock
17
18
PCU
MPED
Manual feed paper empty
detection signal
detection signal
Manual paper feed tray paper
empty detection
empty detection
Paper
empty
empty
Paper
present
13
11
PCU
Signal name
Name
Function/Operation
Connector level
Connector
No.
Pin No.
PWB
name
Remark
"L"
"H"
AR-M550/M620 SIGNAL NAME LIST 14 - 6
MPFC
Paper feed clutch control signal
(Manual feed)
(Manual feed)
Manual feed tray paper feed
roller control
roller control
Paper feed
—
13
20
PCU
MPFD1
Manual feed paper pass
detection signal 1
detection signal 1
Manual tray paper pass
detection
detection
—
Paper pass
13
21
PCU
MPFD2
Manual feed paper pass
detection signal 2
detection signal 2
Manual tray paper pass
detection
detection
Paper pass
—
18
6
PCU
MPFGS
Manual feed gate solenoid
control signal
control signal
Manual feed gate control
Paper pass
enable
Stopper
13
17
PCU
MPFPWS
Manual feed paper width
detection signal
detection signal
Manual feed paper width
detection
detection
—
—
13
16
PCU
MPLD1
Manual feed paper length
detection signal 1
detection signal 1
Manual paper feed tray paper
length detection (Short)
length detection (Short)
—
Paper
present
13
6
PCU
MPLD2
Manual feed paper length
detection signal 1
detection signal 1
Manual paper feed tray paper
length detection (Long)
length detection (Long)
—
Paper
present
13
10
PCU
MPRD1
Paper feed tray 2 paper pass
detection signal 1
detection signal 1
Manual feed/paper feed tray 2
paper pass detection
paper pass detection
Paper pass
—
12
23
PCU
MPRD2
Paper feed tray 2 paper pass
detection signal 2
detection signal 2
Manual feed/paper feed tray 2
paper pass detection
paper pass detection
Paper pass
—
12
29
PCU
MSWMON
MSW monitor signal
Main switch monitor
—
—
19
23
PCU
MSWOFF
MSW OFF signal
Main switch OFF signal
—
—
9
5
PCU
MSWPR
Main switch power relay control
signal
signal
Main switch power relay control
Relay ON
Relay OFF
2
15
PCU
MTOP1
Manual tray pull-out position
detection signal 1
detection signal 1
Manual paper feed tray pull-out
position detection (Storing
position)
position detection (Storing
position)
Store
—
13
12
PCU
MTOP2
Manual tray pull-out position
detection signal 2
detection signal 2
Manual paper feed tray pull-out
position detection (Pull-out
position)
position detection (Pull-out
position)
Pull out
—
13
14
PCU
OCSW
SPF open/close detection
signal
signal
Document size detection
trigger
trigger
Close
3
3
SCN
PAGE
Page signal
Print timing control for
controller (Output for every
page)
controller (Output for every
page)
—
—
9
14
PCU
PAGE1
Image effective area signal
(CCD)
(CCD)
Indicates image data area of
one page. (CCD)
one page. (CCD)
—
—
1
68
SCN
PAGE2
Image effective area signal
(CIS)
(CIS)
Indicates image data area of
one page. (CIS)
one page. (CIS)
—
—
10
12
SCN
PCS
Image density sensor signal
Detection of density of toner
patch on the OPC drum
patch on the OPC drum
—
—
8
3
PCU
PCS-LED
Image density sensor LED
current control signal
current control signal
Image density sensor LED light
emitting quantity control
emitting quantity control
—
—
8
1
PCU
PCU_DSR
Serial communication control
signal
signal
Send control signal (Serial
communication)
communication)
—
—
9
13
PCU
PCU_DTR
Serial communication control
signal
signal
Receive control signal (Serial
communication)
communication)
—
—
9
10
PCU
PCU_RES
PCU reset signal
PCU reset by the controller
Operation
enable
Reset
9
7
PCU
PCU_RXD
Serial communication send
data signal
data signal
Send data to the controller
—
—
9
17
PCU
PCU_TXD
Serial communication receive
data signal
data signal
Receive data from the
controller
controller
—
—
9
9
PCU
PD
Document size detection signal OC document size detection
analog signal
—
—
1
74
SCN
PDSEL0
Document detection select
signal 0
signal 0
Document size detection signal
select
select
—
—
1
72
SCN
PDSEL1
Document detection select
signal 1
signal 1
Document size detection signal
select
select
—
—
1
21
SCN
PDSEL2
Document detection select
signal 2
signal 2
Document size detection signal
select
select
—
—
1
22
SCN
PFD2
Paper pass detection signal 2
Paper pass detection from
duplex (ADU)/LCC/Desk
section
duplex (ADU)/LCC/Desk
section
Paper pass
—
7
10
PCU
PGMCLK
LSU motor RPM control signal
(CLK)
(CLK)
LSU motor RPM control
—
—
22
6
PCU
PNC
Count-up signal (Auditor)
Count up (Auditor)
Count UP
5
1
SCN
Signal name
Name
Function/Operation
Connector level
Connector
No.
Pin No.
PWB
name
Remark
"L"
"H"
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"
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