AR-M550 (serv.man21). (14) Signal name list - Sharp Copying Equipment Service Manual (repair manual)

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AR-M550 (serv.man21)
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Device
Copying Equipment / (14) Signal name list
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ar-m550-sm21.pdf
Date

View Sharp AR-M550 (serv.man21) Service Manual online

AR-M550/M620  SIGNAL NAME LIST  14 - 1
[14] SIGNAL NAME LIST
Signal name
Name
Function/Operation
Connector level
Connector 
No.
Pin No.
PWB 
name
Remark
"L"
"H"
/MIMA
Scanner motor control signal 
(Phase /A)
Scanner motor control (Phase /
A)
7
3
SCN
/MIMB
Scanner motor control signal 
(Phase /B)
Scanner motor control (Phase /
B)
7
4
SCN
/SLUMB
SPF paper feed tray lift-up 
motor control signal (Phase /B)
SPF paper feed tray lift-up 
motor control (Phase /B)
11
2
SCN
/SLUMA
SPF paper feed tray lift-up 
motor control signal (Phase /A)
SPF paper feed tray lift-up 
motor control (Phase /A)
11
1
SCN
/SPFMA
SPF motor control signal 
(Phase /A)
SPF motor control (Phase /A)
12
11
SCN
/SPFMB
SPF motor control signal 
(Phase /B)
SPF motor control (Phase /B)
12
15
SCN
/VIDEO
Image data signal
Image signal to LSU (PCU 
output)
22
23
PCU
38VMON
38V monitor signal
Detection of 38V for interlock
OFF
ON
19
14
PCU
ACMON
AC waveform monitor signal
SUB power source AC wave 
high value monitor (For heater 
lamp ON control) (Phase 
control)
1
3
PCU
ADD_CCD1
CCD serial data area 
identification number (CCD)
Identification of address data 
and image data area in CCD 
serial data
1
66
SCN
ADD_CCD2
CIS serial data area 
identification number (CIS)
Identification of address data 
and image data area in CIS 
serial data
10
13
SCN
ADM1A
Duplex (ADU) motor 1 
(Upstream side) control signal 
(Phase A)
Duplex (ADU) motor 1 
(Upstream) control (Phase A)
10
9
PCU
ADM1B
Duplex (ADU) motor 1 
(Upstream side) control signal 
(Phase B)
Duplex (ADU) motor 1 
(Upstream) control (Phase B)
10
11
PCU
ADM1XA
Duplex (ADU) motor 1 
(Upstream side) control signal 
(Phase /A)
Duplex (ADU) motor 1 
(Upstream) control (Phase /A)
10
10
PCU
ADM1XB
Duplex (ADU) motor 1 
(Upstream side) control signal 
(Phase /B)
Duplex (ADU) motor 1 
(Upstream) control (Phase /B)
10
12
PCU
ADM2A
Duplex (ADU) motor 2 
(Downstream side) control 
signal (Phase A)
Duplex (ADU) motor 2 
(Upstream) control (Phase A)
10
13
PCU
ADM2B
Duplex (ADU) motor 2 
(Downstream side) control 
signal (Phase B)
Duplex (ADU) motor 2 
(Upstream) control (Phase B)
10
15
PCU
ADM2XA
Duplex (ADU) motor 2 
(Downstream side) control 
signal (Phase /A)
Duplex (ADU) motor 2 
(Upstream) control (Phase /A)
10
14
PCU
ADM2XB
Duplex (ADU) motor 2 
(Downstream side) control 
signal (Phase /B)
Duplex (ADU) motor 2 
(Upstream) control (Phase /B)
10
16
PCU
AINPD
Duplex (ADU) paper entry 
detection signal
Duplex (ADU) paper entry 
detection, detection of paper 
exit to finisher
Paper pass
7
28
PCU
APPD1
Duplex (ADU) paper pass 
detection signal 1
Duplex (ADU) upstream paper 
pass detection
Paper pass
7
24
PCU
APPD2
Duplex (ADU) paper pass 
detection signal 2
Duplex (ADU) midstream 
paper pass detection
Paper pass
7
26
PCU
ADU
Auditor installation detection 
signal
Auditor installation detection
Counter 
available
5
5
SCN
BUP-PRout
Power save mode relay signal
Selection of power save mode 
and normal power mode
Relay OFF
Relay ON
19
9
PCU
BZR
Buzzer signal
Key touch sound buzzer signal
Ring
1
86
SCN
CA
Clear all (Auditor) signal
Clear all (Auditor)
Clear
5
3
SCN
CCDFAN
CCD fan motor control signal
CCD fan motor control
ON
1
17
SCN
Not used.
AR-M550/M620  SIGNAL NAME LIST  14 - 2
CCFT
Backlight control signal
Backlight control
ON
1
94
SCN
CFM-DC1
Cooling fan motor control 
signal (Power source)
Power cooling fan motor 
control
Max. force 
of wind
Stop
19
3
PCU
CFM-DC2
Cooling fan motor control 
signal (Power source)
Power cooling fan motor 
control
Max. force 
of wind
Stop
19
4
PCU
CFM-DV
Cooling fan motor control 
signal (Developing)
Developing cooling fan motor 
control
Max. force 
of wind
Stop
7
3
PCU
CFM-R1
Cooling fan motor control 
signal (LSU/Process section)
Cooling fan motor control 
(LSU, process section)
Max. force 
of wind
Stop
21
3
PCU
CFM-R2
Cooling fan motor control 
signal (LSU/Process section)
Cooling fan motor control 
(LSU, process section)
Max. force 
of wind
Stop
21
4
PCU
CFM-R3
Cooling fan motor control 
signal (LSU/Process section)
Cooling fan motor control 
(LSU, process section)
Max. force 
of wind
Stop
21
9
PCU
CFM-U1
Cooling fan motor control
Cooling fan motor control 
(LSU, process section)
Max. force 
of wind
Stop
5
21
PCU
CFM-U2
Cooling fan motor control 
signal (Paper exit, duplex 
(ADU) section) (Paper exit 
section rear side)
Paper exit, duplex (ADU) 
section cooling
Max. force 
of wind
Stop
5
28
PCU
CFM-U3
Cooling fan motor control 
signal (Paper exit, duplex 
(ADU) section) (Front surface)
Paper exit, duplex (ADU) 
section cooling
Max. force 
of wind
Stop
5
27
PCU
CHVACPWM High voltage control output 
(Separation charger) (CHV)
Separation charger AC 
component PWM control
15
12
PCU
CHVACREM High voltage control output 
(Separation charger) (CHV)
Separation charger AC 
component ON/OFF control
ON
OFF
15
13
PCU
CHV-PWM
High voltage control output 
(Separation charger) (CHV)
Separation charger DC 
component PWM control
15
10
PCU
CHV-REM
High voltage control output 
(Separation charger) (CHV)
Separation charger DC 
component ON/OFF control
ON
OFF
15
11
PCU
CISSET
CIS identification signal
CIS unit installation detection
CIS 
available
10
26
SCN
CISTH
CIS temperature detection 
signal
CIS temperature detection
13
1
SCN
Not used.
CL1
Scanner lamp control signal
Scanner lamp control
ON
1
71
SCN
CLK_CCD1
CCD serial data clock signal 
(CCD)
CD serial data output timing 
control (CCD)
1
62
SCN
CLK_CCD2
CIS serial data clock signal 
(CIS)
CIS serial data output timing 
control (CIS)
10
11
SCN
COPY
Copy status (Auditor)
Copy status signal (Auditor)
Copying
5
2
SCN
CRUCLK
Communication CLK
CRUM communication CLK
11
6
PCU
CRUSDA
Communication data address 
signal
CRUM communication data 
address signal
11
8
PCU
CV_CA
Clear all signal (Coin vendor)
Clear all (Coin vendor)
Clear
4
6
SCN
CV_COPY
Copy enable signal (Coin 
vendor)
Copy enable (Coin vendor)
Copy 
enable
4
3
SCN
CV_COUNT
Count up signal (Coin vendor)
Count-up (Coin vendor)
Count UP
4
4
SCN
CV_DUPLEX Print count identification signal 
(Duplex mode) (For coin 
vendor)
Print count identification signal 
(Duplex mode) (For coin 
vendor) (Identification of single 
count or double count)
Duplex 
mode
4
8
SCN
CV_SIZE0
Paper size signal 0 (Coin 
vendor)
Paper size 0 (Coin vendor)
4
9
SCN
Refer to the 
separate 
table (
2)
CV_SIZE1
Paper size signal 1 (Coin 
vendor)
Paper size 1 (Coin vendor)
4
10
SCN
CV_SIZE2
Paper size signal 2 (Coin 
vendor)
Paper size 2 (Coin vendor)
4
11
SCN
CV_SIZE3
Paper size signal 3 (Coin 
vendor)
Paper size 3 (Coin vendor)
4
12
SCN
CV_STAPLE Staple mode signal (Coin 
vendor)
Staple mode identification 
(Coin vendor)
Staple 
mode
4
7
SCN
CV_START
Copy start signal (Coin vendor) Copy start status (Coin vendor)
Copy start
4
5
SCN
DCCNT
DC power control signal
DC power ON/OFF
OFF
ON
9 — 8
19 — 24
PCU
Signal name
Name
Function/Operation
Connector level
Connector 
No.
Pin No.
PWB 
name
Remark
"L"
"H"
AR-M550/M620  SIGNAL NAME LIST  14 - 3
DGS
Paper exit gate solenoid 
control signal
Paper exit gate control
Duplex Simplex
7
27
PCU
DL
Discharge lamp control signal 
Discharge lamp control
ON
OFF
8
9
PCU
DM
OPC drum motor rotating 
speed control signal (ON/OFF)
OPS drum motor ON/OFF
ON
OFF
6
5
PCU
DMCLK
OPC drum motor rotating 
speed control (CLK) signal
OPC drum motor RPM control
6
7
PCU
DMS
OPC drum marking sensor 
signal
OPC drum mark detection
8
4
PCU
DMS-LED
OPC drum marking sensor 
LED control signal
OPC drum marking LED light 
quantity control
8
2
PCU
DM-T
OPC drum motor lock detection 
signal
OPC drum motor lock detection
Rotation
Stop/Lock
6
9
PCU
DSKPFC1
Paper feed tray 3/4 paper 
transport clutch control signal 1
Paper feed tray 3/4 paper 
transport control
Paper 
transport
16
26
PCU
DSKPFC2
Paper feed tray 3/4 paper 
transport clutch control signal 2
Paper feed tray 3/4 paper 
transport control
Paper 
transport
17
8
PCU
DSR_FIN
Serial communication control 
signal
Receive control
17
17
PCU
DSR_LCC
Serial communication control 
signal
Receive control
18
9
PCU
DSR_SCN
Serial I/F send enable (MFP)
Receive control
9
46
SCN
DSW-ADU
Duplex (ADU) cover open/
close detection signal
Duplex (ADU) cover open/
close detection
Duplex 
(ADU) door 
open
Duplex 
(ADU) door 
close
7
25
PCU
DSW-DSK
Left door open/close detection 
signal (Desk section)
Left door open/close detection 
(Desk section)
Desk left 
door open
Desk left 
door close
17
28
PCU
DSW-F_HV
DC low voltage power (+24V) 
line signal for generating high 
voltage
High voltage power source 
(+24V)
High 
voltage 
available
15
1
PCU
DSW-F
Front door open/close 
detection signal
Front door open/close 
detection
Left door 
open or 
Front door 
open
Left door 
close
 and Front 
door close
2
28
PCU
DSW-L
Left door open/close detection 
signal
Left door open/close detection
Left door 
open
Left door 
close
7
32
PCU
DSW-R
Manual feed open/close 
detection signal
Manual feed open/close 
detection
Left door 
open or 
Front door 
open or 
manual unit 
pull-out
Left door 
close
 and Front 
door close
and manual 
unit 
insertion
13
26
PCU
DTR_FIN
Serial communication control 
signal
Send control
17
15
PCU
DTR_LCC
Serial communication control 
signal
Send control
18
7
PCU
DTR_SCN
Serial I/F receive enable signal 
(MFP)
Send control
9
9
SCN
DVCH1
DV unit identification signal 1
Detection of installation
12
6
PCU
DVM
Developing motor control 
signal
Developing motor ON/OFF
ON
OFF
6
6
PCU
DVMCLK
Developing motor rotating 
speed control (CLK) signal
Developing motor control RPM 
control
6
8
PCU
DVM-T
Developing motor lock 
detection signal
Developing motor lock 
detection
Rotation
Stop/Lock
6
10
PCU
DVPWM
Developing bias voltage control 
signal (PWM)
Developing bias PWM control
15
14
PCU
DVREM
Developing bias control (ON/
OFF) signal
Developing bias ON/OFF
ON
OFF
15
15
PCU
F0
Operation panel LED matrix 
signal 0
Switching
1
78
SCN
F1
Operation panel LED matrix 
signal 1
Switching
1
80
SCN
Signal name
Name
Function/Operation
Connector level
Connector 
No.
Pin No.
PWB 
name
Remark
"L"
"H"
AR-M550/M620  SIGNAL NAME LIST  14 - 4
F2
Operation panel LED matrix 
signal 2
Switching
1
82
SCN
F3
Operation panel  LED matrix 
signal 3
Switching
1
84
SCN
FBIAS
Fusing bias output control 
signal
Fusing bias output ON/OFF 
control
ON
OFF
7
23
PCU
FRDY
FAX LED lighting signal
LED lighting control in power 
save mode, iFAX, FAX 
nighttime mode
LED ON
9
14
SCN
FRM_CCD1
CCD image data effective area 
signal (CCD)
CCD image data effective area 
control (CCD)
1
61
SCN
FRM_CCD2
CIS image data effective area 
signal (CIS)
CIS image data effective area 
control (CIS)
10
10
SCN
FUM
Fusing motor control signal
Fusing motor ON/OFF
ON
OFF
6
13
PCU
FUMCLK
Fusing motor rotating speed 
control (CLK) signal
Fusing motor control CLK
6
14
PCU
FUM-T
Fusing motor lock detection 
signal
Fusing motor lock detection
Rotation
Stop/Lock
6
15
PCU
FW
AC power source full wave 
signal
Power monitor
20
9
PCU
FW_SUB
Sub power source full wave 
signal
Sub power full wave signal
1
4
PCU
FWP-PCU
Flash write protect signal
Flash write protect
9
6
PCU
GBPWM
Making charger grid bias 
voltage (PWM) control signal
Main charger grid bias voltage 
(PWM) control
15
5
PCU
HLCNT1
Upper fusing roller center 
heater lamp control signal
Upper fusing roller center 
heating control
OFF
ON
2
9
PCU
HLCNT2
Upper fusing roller center 
heater lamp control signal
Upper fusing roller edges 
heating control
OFF
ON
2
11
PCU
HLCNT3
Sub heat roller heater lamp 
control signal
Sub heat roller heater lamp 
control
OFF
ON
1
5
PCU
HLPRout
Fusing heater lamp power 
relay control signal
Fusing heater lamp power 
relay control
Relay OFF
Relay ON
2
5
PCU
HLPRout3
Fusing heater lamp power 
relay 3 control signal
Fusing heater lamp power 
relay 3 control
Relay OFF
Relay ON
2
7
PCU
HPFC
Horizontal paper transport 
clutch control signal
Horizontal paper transport 
clutch control
Paper 
transport
12
7
PCU
HPLS
Paper guide lock solenoid 
control signal
Paper guide lock solenoid 
control
Lock
12
4
PCU
HSYNC
Horizontal sync signal
Horizontal sync
9
18
PCU
HUS-DV
Developing humidity sensor
Developing section peripheral 
humidity detection
12
26
PCU
HUS-TC
Transfer humidity sensor
Transfer section peripheral 
humidity detection
8
17
PCU
HVREMout
High voltage control output 
control signal (MC/DV/TC)
High voltage ON/OFF control 
signal (MC/DV/TC)
OFF
ON
15
16
PCU
INTPR2out
Interlock power relay "RY5" 
control signal
AC PWB relay "RY5" control 
(38V line interlock relay)
Relay OFF
Relay ON
19
19
PCU
INTPRout
Interlock power relay "RY4" 
control signal
AC PWB relay "RY4" control 
(38V line interlock relay)
Relay OFF
Relay ON
19
15
PCU
LDON
Laser ON/OFF control signal
Laser ON/OFF control
22
27
PCU
LED0
Document size detection LED 
control signal 1
Document size detection LED 
control
3
5
SCN
LED1
Document size detection LED 
control signal 0
Document size detection LED 
control
3
6
SCN
LPPD
LCC paper pass detection 
signal
Detection of paper entry from 
LCC
Paper pass
18
12
PCU
LSU_S/H
Laser beam horizontal sync 
signal
Laser beam horizontal position 
timing control
22
25
PCU
M1LUD
Paper tray upper limit detection 
signal (Paper feed tray 3)
Paper tray upper limit detection 
(Paper feed tray 3)
Upper limit
16
13
PCU
M1LUM
Lift-up motor control signal 
(Paper feed tray 3)
Lift-up motor control (Paper 
feed tray 3)
Stop
Up
16
27
PCU
M1PED
Paper empty detection signal 
(Paper feed tray 3)
Paper empty detection (Paper 
feed tray 3)
Paper 
empty
Paper 
present
16
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 - 5
M1PFC
Paper feed clutch (M1) control 
signal (Paper feed tray 3)
Paper feed tray 3 paper feed 
control
Paper 
transport
16
25
PCU
M1PFD
Paper pass detection signal 
(Multi paper feed tray 3)
Paper feed tray 3 paper pass 
detection
Paper pass
16
21
PCU
M1PUS
Paper pickup solenoid control 
signal (Paper feed tray 3)
Paper pickup roller control 
(Paper feed tray 3)
Roller UP
Paper feed
16
3
PCU
M1PWS
Paper feed tray paper width 
detection signal (Paper feed 
tray 3)
Multi paper feed tray paper 
width detection (Paper feed 
tray 3)
16
32
PCU
M1SPD
Paper remaining quantity 
detection signal (Paper feed 
tray 3)
Paper remaining quantity 
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 size detection (Paper 
feed tray 3)
15
21
PCU
Refer to the 
separate 
table (
1)
M1SS2
Paper size detection signal 
(Paper feed tray 3)
Paper size detection (Paper 
feed tray 3)
15
23
PCU
M1SS3
Paper size detection signal 
(Paper feed tray 3)
Paper size detection (Paper 
feed tray 3)
15
25
PCU
M1SS4
Paper size detection signal 
(Paper feed tray 3)
Paper size detection (Paper 
feed tray 3)
15
27
PCU
M2LUD
Paper tray upper limit detection 
signal (Paper feed tray 4)
Paper tray upper limit detection 
(Paper feed tray 4)
Upper limit
16
14
PCU
M2LUM
Lift-up motor control signal 
(Paper feed tray 4)
Lift-up motor control (Paper 
feed tray 4)
Stop
Up
17
1
PCU
M2PED
Paper empty detection signal 
(Paper feed tray 4)
Paper empty detection (Paper 
feed tray 4)
Paper 
empty
Paper 
present
16
8
PCU
M2PFC
Paper feed clutch (M1) control 
signal (Paper feed tray 4)
Paper feed tray 4 paper feed 
control
Paper 
transport
17
7
PCU
M2PFD
Paper pass detection signal 
(Multi paper feed tray 4)
Paper feed tray 4 paper pass 
detection
Paper pass
16
22
PCU
M2PUS
Paper pickup solenoid control 
signal (Paper feed tray 4)
Paper pickup roller control 
(Paper feed tray 4)
Roller UP
Paper feed
16
4
PCU
M2SPD
Paper remaining quantity 
detection (Paper feed tray 4) 
signal
Paper remaining quantity 
detection (Paper feed tray 4)
Remaining 
paper 
quantity 
66% or less
15
32
PCU
M2SS1
Paper size detection signal 
(Paper feed tray 4)
Paper size detection (Paper 
feed tray 4)
15
22
PCU
Refer to the 
separate 
table (
1)
M2SS2
Paper size detection signal 
(Paper feed tray 4)
Paper size detection (Paper 
feed tray 4)
15
24
PCU
M2SS3
Paper size detection signal 
(Paper feed tray 4)
Paper size detection (Paper 
feed tray 4)
15
26
PCU
M2SS4
Paper size detection signal 
(Paper feed tray 4)
Paper size detection (Paper 
feed tray 4)
15
28
PCU
MFPUS
Paper pickup solenoid (MFP) 
control signal (Manual paper 
feed)
Paper pickup solenoid (MPF) 
control (Manual paper feed)
Paper feed 
with the 
roller down
13
7
PCU
MHPS
Scanner home position sensor 
signal
Scanner home position 
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
Main charger trouble detection
Trouble, no 
MHV
Normal
15
7
PCU
MIMA
Scanner motor control signal 
(Phase A)
Scanner motor control (Phase 
A)
7
1
SCN
MIMB
Scanner motor control signal 
(Phase B)
Scanner motor control (Phase 
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
Main motor RPM control
17
16
PCU
MM-T
Main motor lock detection 
signal
Main motor lock detection
Rotation
Stop/Lock
17
18
PCU
MPED
Manual feed paper empty 
detection signal
Manual paper feed tray paper 
empty detection
Paper 
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 tray paper feed 
roller control
Paper feed
13
20
PCU
MPFD1
Manual feed paper pass 
detection signal 1
Manual tray paper pass 
detection
Paper pass
13
21
PCU
MPFD2
Manual feed paper pass 
detection signal 2
Manual tray paper pass 
detection
Paper pass
18
6
PCU
MPFGS
Manual feed gate solenoid 
control signal
Manual feed gate control
Paper pass 
enable
Stopper
13
17
PCU
MPFPWS
Manual feed paper width 
detection signal
Manual feed paper width 
detection
13
16
PCU
MPLD1
Manual feed paper length 
detection signal 1
Manual paper feed tray paper 
length detection (Short)
Paper 
present
13
6
PCU
MPLD2
Manual feed paper length 
detection signal 1
Manual paper feed tray paper 
length detection (Long)
Paper 
present
13
10
PCU
MPRD1
Paper feed tray 2 paper pass 
detection signal 1
Manual feed/paper feed tray 2 
paper pass detection
Paper pass
12
23
PCU
MPRD2
Paper feed tray 2 paper pass 
detection signal 2
Manual feed/paper feed tray 2 
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
Main switch power relay control
Relay ON 
Relay OFF
2
15
PCU
MTOP1
Manual tray pull-out position 
detection signal 1
Manual paper feed tray pull-out 
position detection (Storing 
position)
Store
13
12
PCU
MTOP2
Manual tray pull-out position 
detection signal 2
Manual paper feed tray pull-out 
position detection (Pull-out 
position)
Pull out
13
14
PCU
OCSW
SPF open/close detection 
signal
Document size detection 
trigger
Close
3
3
SCN
PAGE
Page signal
Print timing control for 
controller (Output for every 
page)
9
14
PCU
PAGE1
Image effective area signal 
(CCD)
Indicates image data area of 
one page. (CCD)
1
68
SCN
PAGE2
Image effective area signal 
(CIS)
Indicates image data area of 
one page. (CIS)
10
12
SCN
PCS
Image density sensor signal
Detection of density of toner 
patch on the OPC drum
8
3
PCU
PCS-LED
Image density sensor LED 
current control signal
Image density sensor LED light 
emitting quantity control
8
1
PCU
PCU_DSR
Serial communication control 
signal
Send control signal (Serial 
communication)
9
13
PCU
PCU_DTR
Serial communication control 
signal
Receive control signal (Serial 
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
Send data to the controller
9
17
PCU
PCU_TXD
Serial communication receive 
data signal 
Receive data from the 
controller
9
9
PCU
PD
Document size detection signal OC document size detection 
analog signal
1
74
SCN
PDSEL0
Document detection select 
signal 0
Document size detection signal 
select
1
72
SCN
PDSEL1
Document detection select 
signal 1
Document size detection signal 
select
1
21
SCN
PDSEL2
Document detection select 
signal 2
Document size detection signal 
select
1
22
SCN
PFD2
Paper pass detection signal 2
Paper pass detection from 
duplex (ADU)/LCC/Desk 
section
Paper pass
7
10
PCU
PGMCLK
LSU motor RPM control signal 
(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)
Count up (Personal counter)
2
20
PCU
POD1
Paper exit detection 1 signal
Paper exit detection from 
fusing
Paper pass
5
3
PCU
POD2
Paper exit detection 2 signal
Paper pass detection from 
paper exit
Paper pass
5
9
PCU
POD3
Paper exit detection 3 signal
Paper exit detection to upper 
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)
Power OFF
9
43
SCN
POM1A
Paper exit motor 1 (Fusing 
side) control signal (Phase A)
Paper exit unit (Fusing side) 
paper transport
10
1
PCU
POM1B
Paper exit motor 1 (Fusing 
side) control signal (Phase B)
Paper exit unit (Fusing side) 
paper transport
10
3
PCU
POM1XA
Paper exit motor 1 (Fusing 
side) control signal (Phase /A)
Paper exit unit (Fusing side) 
paper transport
10
2
PCU
POM1XB
Paper exit motor 1 (Fusing 
side) control signal (Phase /B)
Paper exit unit (Fusing side) 
paper transport
10
4
PCU
POM2A
Paper exit motor 2 (Paper exit 
side) control signal (Phase A)
Paper exit unit (paper exit side) 
paper transport
10
5
PCU
POM2B
Paper exit motor 2 (Fusing 
side) control signal (Phase B)
Paper exit unit (paper exit side) 
paper transport
10
7
PCU
POM2XA
Paper exit motor 2 (Fusing 
side) control signal (Phase /A)
Paper exit unit (paper exit side) 
paper transport
10
6
PCU
POM2XB
Paper exit motor 2 (Fusing 
side) control signal (Phase /B)
Paper exit unit (Paper exit side) 
paper transport
10
8
PCU
PPD
Resist roller front paper pass 
detection signal
Paper pass detection in front of 
resist roller
Paper pass
12
15
PCU
PROFF_CNT BUP-PR control signal (Main 
power OFF signal)
Main power OFF signal (output 
from controller)
End
9
4
PCU
PRON_FAX
BUP-PR control signal (Main 
power ON signal)
Main power ON signal (Output 
front FAX unit)
Boot
9
1
PCU
PSBC
Resist roller brake clutch 
control signal
Resist roller brake clutch 
control
Paper 
transport 
enable
12
11
PCU
PSPS
Separation solenoid control 
signal
Separation solenoid control
Separation
8
13
PCU
READY
LSU motor lock detection 
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)
Reset
9
44
SCN
RRC
Resist roller clutch control 
signal
Resist roller clutch control (The 
relative position of print image 
and paper is controlled.) 
Paper 
transport
7
4
PCU
RTH1
Heat roller temperature 
detection signal
Heat roller temperature 
detection
2
6
PCU
RTH2
Pressure roller temperature 
detection signal
Pressure roller temperature 
detection
2
10
PCU
RTH3
Sub heat roller temperature 
detection signal
Sub heat roller temperature 
detection
2
14
PCU
RXD_CCD1
Serial I/F data (CCD)
Serial I/F data (CCD-scanner 
control PWB)
1
65
SCN
RXD_CCD2
Serial I/F data (CIS)
Serial I/F data (CCD-scanner 
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)
17
13
PCU
RXD_LCC
Serial I/F data (LCC)
Serial I/F data (LCC-PCU 
PWB)
18
5
PCU
RXD_SCN
Serial I/F data (Scanner control 
PWB)
Serial I/F data (Scanner control 
PWB - Controller)
9
45
SCN
SCNSET
Scanner control PWB 
identification signal
Scanner control PWB 
installation detection
Scanner 
available
9
47
SCN
SCOV
SPF cover switch signal
SPF cover open/close 
detection
Close
12
8
SCN
SEG0
Operation panel LED matrix 
signal 0
Operation panel LED matrix
1
24
SCN
SEG1
Operation panel LED matrix 
signal 1
Operation panel LED matrix
1
75
SCN
SEG2
Operation panel LED matrix 
signal 2
Operation panel LED matrix
1
76
SCN
SLEEP
Energy-saving mode display 
signal
LED lighting signal in energy 
saving mode
LED ON
9
15
SCN
SLUMA
SPF tray lift-up motor control 
signal (Phase A)
SPF tray lift-up motor control 
(Phase A)
11
3
SCN
SLUMB
SPF tray lift-up motor control 
signal (Phase B)
SPF tray lift-up motor control 
(Phase B)
11
4
SCN
SOCD
SPF open/close detection 
signal
SPF open/close detection
Close
11
19
SCN
SPED1
SPF document upper limit 
detection signal
SPF document upper limit 
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
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)
SPF paper feed, paper 
transport motor control (Phase 
A)
12
13
SCN
SPFMB
SPF paper feed, paper 
transport signal (Phase B)
SPF paper feed, paper 
transport motor control (Phase 
B)
12
17
SCN
SPFMO1
SPF paper feed, paper 
transport motor current control 
signal 1
SPF paper feed, paper 
transport motor current control
Power 
down
12
16
SCN
SPFMO2
SPF paper feed, paper 
transport motor current control 
signal 2
SPF paper feed, paper 
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
SPF document length 
detection (Short)
Paper 
present
11
18
SCN
SPLS2
SPF document length 
detection signal 2
SPF document length 
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
SPF document paper pass 
detection 1
Paper 
present
12
10
SCN
SPPD2
SPF document paper pass 
detection 2 signal
SPF document paper pass 
detection 2
Paper 
present
12
6
SCN
SPPD3
SPF document paper pass 
detection 3 signal
SPF document paper pass 
detection 3
Paper 
present
11
13
SCN
SPPD4
SPF document paper pass 
detection 4 signal
SPF document paper pass 
detection 4
Paper 
present
11
12
SCN
SPWS
SPF document size (Width) 
detection analog data signal
SPF document size (Width) 
detection
11
16
SCN
SRRBC
SPF resist roller brake clutch 
control signal
SPF resist roller brake clutch 
control
ON
11
6
SCN
SRRC
SPF resist roller clutch control 
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
SPF document tray lower limit 
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
SPF paper transport roller 
brake clutch control
ON
11
9
SCN
STRC
SPF paper transport clutch 
control signal
SPF paper transport clutch 
control
ON
11
8
SCN
STRRBC
SPF paper transport resist 
brake clutch control signal
SPF paper transport resist 
brake clutch control
ON
12
20
SCN
STRRC
SPF paper transport resist 
clutch control signal
SPF paper transport resist 
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
SPF document tray upper limit 
detection
Upper limit
12
14
SCN
SYNC
LSU horizontal sync detection 
signal
LSU horizontal sync detection 
(BD sensor signal)
22
29
PCU
T1LUD
Paper feed tray upper limit 
detection signal (Paper feed 
tray 1)
Paper feed tray upper limit 
(Paper feed tray 1)
Upper limit
14
13
PCU
T1LUM
Paper tray lift-up motor control 
signal (Paper feed tray 1)
Paper tray lift-up control (Paper 
feed tray 1)
Stop
Up
14
1
PCU
T1PED
Paper empty detection signal 
(Paper feed tray 1)
Paper presence detection 
(Paper feed tray 1)
Paper 
empty
Paper 
present
14
15
PCU
T1PFC
Paper feed clutch control signal 
(Paper feed tray 1)
Paper feed clutch control 
(Paper feed tray 1)
Paper 
transport
17
4
PCU
T1PPD
Paper pass detection signal 
(Paper feed tray 1)
Paper pass detection from 
paper feed tray 1
Paper pass
25
3
PCU
T1PUS
Paper pick-up solenoid control 
signal (Paper feed tray 1)
Paper pickup solenoid control 
(Paper feed tray 1)
Roller UP
Paper feed
14
7
PCU
T1SPD
Paper remaining quantity 
detection signal (Paper feed 
tray 1)
Paper remaining quantity 
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)
Paper tray upper limit detection 
(Paper feed tray 2)
Upper limit
14
21
PCU
T2LUM
Paper tray lift-up motor control 
signal (Paper feed tray 2)
Paper tray lift-up motor control 
(Paper feed tray 2)
Stop
Up
14
2
PCU
T2PED
Paper empty detection signal 
(Paper feed tray 2)
Paper presence detection 
(Paper feed tray 2)
Paper 
empty
Paper 
present
14
23
PCU
T2PFC
Paper clutch control signal 
(Paper feed tray 2)
Paper feed clutch control 
(Paper feed tray 2)
Paper 
transport
12
3
PCU
T2PUS
Paper pickup solenoid control 
signal (Paper feed tray 2)
Paper pickup solenoid control 
(Paper feed tray 2)
The roller 
lifts up.
Paper feed
14
8
PCU
T2SPD
Paper remaining quantity 
detection signal (Paper feed 
tray 2)
Paper remaining quantity 
detection (Paper feed tray 2)
Remaining 
paper 
quantity 
66% or less
14
22
PCU
TANSET
Paper feed tray 1/2 (Tandem 
tray) detection signal
Paper feed tray 1, 2 (Tandem 
tray) insertion detection
Pull out
Insert
17
25
PCU
TCBIAS
Transfer belt cleaning output 
control signal (ON/OFF)
Transfer belt cleaning bias ON/
OFF control
ON
OFF
7
22
PCU
TCBPWM
Transfer belt cleaning output 
control signal (PWM)
Transfer belt cleaning bias 
output voltage PWM control
7
18
PCU
TCS
Toner density detection signal
Toner density detection
12
16
PCU
TFSD
Toner remaining quantity 
detection signal
Toner hopper remaining 
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
OPC drum cleaner peripheral 
temperature detection
8
12
PCU
TH-DV
Developing temperature 
detection signal
Developing section 
temperature detection
12
30
PCU
TH-EX
Paper exit unit temperature 
sensor
Paper exit unit peripheral 
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
Transfer belt separation home 
position detection 1
Contact
7
6
PCU
Not used.
THPS2
Transfer belt contact/
separation home position 
sensor 2
Transfer belt separation home 
position detection 2
Contact
7
14
PCU
TH-RA
Machine temperature detection 
signal
Machine temperature detection
21
10
PCU
THV+PWM
Transfer charger output control 
signal (THV)
Transfer charger output control 
(PWM control)
15
8
PCU
THV+REM
Transfer charger control signal 
(THV)
Transfer charger ON/OFF 
control
ON
OFF
15
9
PCU
TLS
Waste toner pipe lock detection 
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
Waste toner full detection
11
12
PCU
Not used.
TRC_LCC
LCC paper feed timing signal
LCC paper feed timing control 
(Output from PCU)
18
13
PCU
TRMA
Transfer roller 15 drive motor 
control signal (Phase A)
Transport roller 15 drive motor 
control
10
17
PCU
TRMB
Transfer roller 15 drive motor 
control signal (Phase B)
Transport roller 15 drive motor 
control
10
19
PCU
TRMXA
Transfer roller 15 drive motor 
control signal (Phase /A)
Transport roller 15 drive motor 
control
10
18
PCU
TRMXB
Transfer roller 15 drive motor 
control signal (Phase /B)
Transport roller 15 drive motor 
control
10
20
PCU
TSGOUT
Toner den misty sensor gain 
control signal
Toner density sensor gain 
control
12
20
PCU
TURM
Transfer separation motor 
control signal
Transfer unit separation control
Stop
Contact/
Release
7
16
PCU
TXD_CCD1
Serial I/F data (CCD)
Serial I/F data (Scanner control 
PWB - CCD)
1
63
SCN
TXD_CCD2
Serial I/F data (CCD)
Serial I/F data (Scanner control 
PWB - CCD)
10
14
SCN
TXD_FIN
Serial I/F data (Finisher)
Serial I/F data (PCU PWB - 
Finisher)
17
11
PCU
TXD_LCC
Serial I/F data (LCC)
aerial I/F data (Controller - 
Scanner control PWB)
18
3
PCU
TXD_SCN
Serial I/F data (Scanner control 
PWB)
Serial I/F data (Controller - 
Scanner control PWB)
9
8
SCN
VCCW_SCN Scanner flash ROM write 
protect signal
Scanner flash ROM write 
protect
Write 
enable
9
10
SCN
VFM-BKL
Exhaust fan motor control 
signal (Rear left)
Exhaust fan motor control 
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)
Exhaust fan motor control 
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)
Exhaust fan motor control 
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)
Exhaust fan motor control 
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)
Exhaust fan motor control 
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
9
21
PCU
Signal name
Name
Function/Operation
Connector level
Connector 
No.
Pin No.
PWB 
name
Remark
"L"
"H"

Download Sharp AR-M550 (serv.man21) Service Manual (Repair Manual)

Here you can view online and download Sharp AR-M550 (serv.man21) Service Manual in PDF. AR-M550 (serv.man21) service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sharp AR-M550 (serv.man21) Copying Equipment. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.