Sharp AR-M351U / AR-M451U (serv.man21) Service Manual ▷ View online
AR-M351U/M451U, AR-M355U/M455U ELECTRICAL SECTION 13 - 20
MCLUD
MP tray upper limit sensor
signal
signal
MP tray upper limit
detection
detection
—
Upper limit
10
9
PCU
MCM_T
Multi-purpose paper feed
tray transport motor lock
signal
tray transport motor lock
signal
Multi-purpose paper feed
tray transport motor lock
detection
tray transport motor lock
detection
Rotation
Stop/Lock
10
20
PCU
MCMCLK
Multi-purpose paper feed
tray transport motor clock
signal
tray transport motor clock
signal
Multi-purpose paper feed
tray transport motor
rotating speed control
tray transport motor
rotating speed control
—
—
10
21
PCU
MCPED
MP tray paper empty
sensor signal
sensor signal
MP tray paper empty
detection
detection
Paper present
—
10
8
PCU
MCPWS
MP tray width sensor
detection
detection
MP tray paper width
detection
detection
—
—
10
10
PCU
MCSET
10
16
PCU
MCSPD
MP tray paper remaining
quantity sensor signal
quantity sensor signal
MP tray paper remaining
quantity detection
quantity detection
When pressed
—
10
15
PCU
MCSS1
MP tray rear edge sensor
1 signal
1 signal
MP tray rear edge size
detection
detection
When pressed
—
10
11
PCU
MCSS2
MP tray rear edge sensor
2 signal
2 signal
MP tray rear edge size
detection
detection
When pressed
—
10
12
PCU
MCSS3
MP tray rear edge sensor
3 signal
3 signal
MP tray rear edge size
detection
detection
When pressed
—
10
13
PCU
MCSS4
MP tray rear edge sensor
4 signal
4 signal
MP tray rear edge size
detection
detection
When pressed
—
10
14
PCU
MHV-T
Main charger trouble
detection signal
detection signal
Main charger trouble
detection
detection
Trouble/
Without MHV
Normal
15
13
PCU
MM-T
Main motor lock detection
signal
signal
Main motor lock detection
Rotation
Stop/Lock
9
8
PCU
MPED
ADU manual feed paper
sensor signal
sensor signal
Manual feed tray paper
empty detection
empty detection
Paper present
—
12
19
PCU
MPFSET
Manual feed unit detection
signal
signal
Manual feed unit detection
Provided
Not provided
12
23
PCU
MPLD1
Manual feed paper length
sensor signal
sensor signal
Manual paper feed tray
paper length detection
paper length detection
—
Paper
present
12
18
PCU
MPLS1
ADU tray pull-out sensor
signal
signal
Manual feed extension
tray pull-out detection
tray pull-out detection
—
Pull out
12
28
PCU
MPLS2
ADU tray storing sensor
signal
signal
Manual feed extension
tray storing detection
tray storing detection
—
Storing
12
27
PCU
MPWS
ADU manual feed paper
width detection signal
width detection signal
Manual feed paper width
detection
detection
—
—
12
20
PCU
PAGE
Page signal
Print timing control to the
controller (output for every
page)
controller (output for every
page)
—
—
2
13
PCU
PED
Paper tray empty sensor
signal
signal
Paper empty detection
—
Paper empty
13
3
PCU
PMCLK
Polygon mirror motor drive
clock signal
clock signal
Polygon mirror motor drive
clock
clock
—
—
16
27
PCU
POD1
Paper exit detection 1
signal
signal
Detection of paper exit
from the fusing section
from the fusing section
Paper pass
—
4
4
PCU
POD2
Paper exit detection 2
signal
signal
Paper exit paper pass
detection
detection
Paper pass
—
4
10
PCU
POD3
Paper exit detection 3
signal
signal
Detection of paper exit to
the upper section paper
exit tray (Full detection)
the upper section paper
exit tray (Full detection)
Paper pass
(Full detection)
—
4
16
PCU
RES_DSK
Desk reset signal
Desk reset
Operation
enable
Reset
11
17
PCU
RES_FIN1
Finisher reset signal
Finisher reset
Operation
enable
Reset
11
5
PCU
RES_FIN2
Finisher reset signal
Finisher reset
Operation
enable
Reset
11
11
PCU
RES_PCU
PCU reset signal
The controller resets the
PCU.
PCU.
Operation
enable
Reset
2
17
PCU
RTH1
Fusing roller temperature
detection signal
detection signal
Fusing roller temperature
detection (Center section)
detection (Center section)
—
—
14
7
PCU
RTH2
Fusing roller temperature
detection signal
detection signal
Fusing roller temperature
detection (Edge section)
detection (Edge section)
—
—
14
9
PCU
Signal name
Name
Function/Operation
Connector level
Connector
No.
Pin
NO.
PWB
name
Remark
L
H
AR-M351U/M451U, AR-M355U/M455U ELECTRICAL SECTION 13 - 21
RXD_DSK
Serial I/F data (DESK)
Serial I/F data (DESK-
PCU PWB)
PCU PWB)
—
—
11
14
PCU
RXD_FIN1
Serial I/F data
(FINISHER)
(FINISHER)
Serial I/F data
(FINISHER-PCU PWB)
(FINISHER-PCU PWB)
—
—
11
2
PCU
RXD_FIN2
Serial I/F data
(FINISHER)
(FINISHER)
Serial I/F data
(FINISHER-PCU PWB)
(FINISHER-PCU PWB)
—
—
11
8
PCU
RXD_PCU
Serial communication
send data signal
send data signal
Send data to the controller
—
—
2
21
PCU
TCS
Toner concentration
detection signal
detection signal
Toner concentration
detection
detection
—
—
8
7
PCU
TH-DV
Developing temperature
sensor
sensor
Temperature detection
around the developing unit
around the developing unit
—
—
8
4
PCU
THVin
N.C.
N.C.
—
—
15
14
TMA
Toner motor control signal Toner motor ON/OFF
control
—
—
7
1
PCU
TMB
Toner motor control signal Toner motor ON/OFF
control
—
—
7
2
PCU
TXD_DSK
Serial I/F data (DESK)
Serial I/F data (PCU PWB-
DESK)
DESK)
—
—
11
13
PCU
TXD_FIN1
Serial I/F data
(FINISHER)
(FINISHER)
Serial I/F data (PCU PWB
- FINISHER)
- FINISHER)
—
—
11
1
PCU
TXD_FIN2
Serial I/F data
(FINISHER)
(FINISHER)
Serial I/F data (PCU PWB
- FINISHER)
- FINISHER)
—
—
11
7
PCU
TXD_PCU
Serial communication
receive data signal
receive data signal
Receive data from the
controller
controller
—
—
2
23
PCU
VIDEO
Image signal
Image signal to the LSU
—
—
16
13
PCU
VIDEOin-
Image signal
Image signal from the
controller to the PCU PWB
controller to the PCU PWB
—
—
2
9
PCU
VIDEOin+
Image signal
Image signal from the
controller to the PCU PWB
controller to the PCU PWB
—
—
2
10
PCU
VRB
Laser power control signal Laser power control
—
—
16
9
PCU
XADM_H/L
ADU motor current control
signal
signal
ADU motor current control
—
—
12
25
PCU
XADMCK1
ADU upper transport
motor clock signal
motor clock signal
ADU upper transport
motor rotation speed
control
motor rotation speed
control
—
—
12
8
PCU
XADMCK2
ADU lower transport
motor clock signal
motor clock signal
ADU lower transport
motor rotation speed
control
motor rotation speed
control
—
—
12
10
PCU
XADMEN1
ADU upper transport
motor control signal
motor control signal
ADU upper transport
motor ON/OFF control
motor ON/OFF control
ON OFF
12
7
PCU
XADMEN2
ADU lower transport
motor control signal
motor control signal
ADU lower transport
motor ON/OFF control
motor ON/OFF control
ON OFF
12
9
PCU
XADUFM
ADU cooling fan control
signal
signal
Cooling fan control
ON
OFF
12
26
PCU
XCFM1_PWM Suction fan control signal
Suction fan control
Max. air flow
OFF
13
21
PCU
XCFM2PWM
Ozone exhaust fan control
signal
signal
Ozone exhaust fan control
OFF
ON
4
4
4
15
20
20
PCU
XCPFC
Paper cassette paper feed
clutch control signal
clutch control signal
Paper feed clutch control
Paper
transport
—
13
4
PCU
XDGS
ADU gate solenoid control
signal
signal
Gate select in duplex or
paper exit
paper exit
Duplex
Single
12
13
PCU
XDHVPWM
Separation high voltage
output control signal
output control signal
Separation high voltage
PWM control
PWM control
—
—
15
7
PCU
XDHVREM
Separation high voltage
control signal
control signal
Separation high voltage
ON/OFF control
ON/OFF control
ON OFF
15
4
PCU
XDM
OPC drum motor control
signal (ON/OFF)
signal (ON/OFF)
OPC drum motor ON/OFF
ON
OFF
6
5
PCU
XDSR_DSK
Serial communication
control signal
control signal
Receive control
—
—
11
16
PCU
XDSR_FIN1
Serial communication
control signal
control signal
Receive control
—
—
11
4
PCU
XDSR_FIN2
Serial communication
control signal
control signal
Receive control
—
—
11
10
PCU
XDTR_DSK
Serial communication
control signal
control signal
Send control
—
—
11
15
PCU
Signal name
Name
Function/Operation
Connector level
Connector
No.
Pin
NO.
PWB
name
Remark
L
H
AR-M351U/M451U, AR-M355U/M455U ELECTRICAL SECTION 13 - 22
XDTR_FIN1
Serial communication
control signal
control signal
Send control
—
—
11
3
PCU
XDTR_FIN2
Serial communication
control signal
control signal
Send control
—
—
11
9
PCU
XDVPWM
Developing bias voltage
control signal (PWM)
control signal (PWM)
Developing bias PWM
control
control
—
—
15
11
PCU
XDVREM
Developing bias control
(ON/OFF) signal
(ON/OFF) signal
Developing bias ON/OFF
ON
OFF
15
10
PCU
XFGS_FIN
Finisher gate solenoid
control signal
control signal
Finisher gate solenoid
control
control
—
—
11
19
PCU
XFM1
Fan
Fan
—
—
11
20
PCU
XGBPWM
Main charger grid bias
voltage (PWM) control
signal
voltage (PWM) control
signal
Main charger grid bias
voltage (PWM) control
voltage (PWM) control
—
—
15
8
PCU
XLDON
Laser ON/OFF control
signal
signal
Laser ON/OFF control
ON
OFF
16
15
PCU
XMCDRS
MP door open/close
sensor signal
sensor signal
MP left door open/close
detection
detection
—
Door close
10
7
PCU
XMCFCL
Multi-purpose paper feed
tray transport clutch
tray transport clutch
Clutch for transport from
the MP tray
the MP tray
Paper
transport
—
10
18
PCU
XMCLUM
Multi-purpose paper feed
tray lift-up motor
tray lift-up motor
MP tray lift up
Up
Stop
10
19
PCU
XMCM
Multi-purpose paper feed
tray transport motor
control signal
tray transport motor
control signal
Multi-purpose paper feed
tray transport motor ON/
OFF control
tray transport motor ON/
OFF control
ON OFF
10
22
PCU
XMCPCL
Multi-purpose paper feed
clutch
clutch
Clutch for paper feed from
the MP tray
the MP tray
10
17
PCU
XMCPPD
MP transport sensor
signal
signal
Paper detection on the
path
path
Paper
detection
—
10
6
PCU
XMHVREM
Main charger control
signal
signal
Main charger ON/OFF
ON
OFF
15
5
PCU
XMM
Main motor control signal
Main motor ON/OFF
control
control
ON
OFF
9
7
PCU
XMPFC
ADU manual feed paper
feed clutch control signal
feed clutch control signal
Clutch for paper feed from
the manual paper feed
tray
the manual paper feed
tray
Paper feed
—
12
11
PCU
XMPFS
ADU manual feed paper
feed solenoid control
signal
feed solenoid control
signal
Solenoid for paper feed
from the manual paper
feed tray
from the manual paper
feed tray
Paper feed
—
12
12
PCU
XMSS
ADU shutter solenoid
control signal
control signal
Shutter open/close control
in manual paper feed
in manual paper feed
Paper feed
—
12
24
PCU
XMSWMON
MSW monitor signal
Main switch monitor
—
—
14
13
PCU
XMSWOFF
MSW OFF signal
Main switch OFF signal
—
—
2
19
PCU
XMSWPR
Main switch power relay
control signal
control signal
Main switch power relay
control
control
Relay ON
Relay OFF
14
12
PCU
XPNC
Mechanism counter
Mechanism counter
—
—
23
1
PCU
XPOF
Power OFF status signal
Power OFF status
Power OFF
Power ON
2
20
PCU
XPOMA
Paper exit motor control
signal (Phase A)
signal (Phase A)
Paper exit unit paper
transport
transport
—
—
4
5
PCU
XPOMB
Paper exit motor control
signal (Phase B)
signal (Phase B)
Paper exit unit paper
transport
transport
—
—
4
3
PCU
XPOMXA
Paper exit motor control
signal (Phase /A)
signal (Phase /A)
Paper exit unit paper
transport
transport
—
—
4
7
PCU
XPOMXB
Paper exit motor control
signal (Phase /B)
signal (Phase /B)
Paper exit unit paper
transport
transport
—
—
4
1
PCU
XPPD1
Resist roller front paper
pass detection signal
pass detection signal
Detection of paper pass in
front of the resist roller
front of the resist roller
Paper pass
—
13
17
PCU
XPSPS
Separation solenoid
control signal
control signal
Separation solenoid
control
control
Separation
—
5
5
PCU
XREADY
LSU motor READY signal LSU motor READY
detection
—
—
16
28
PCU
XRRC
Resist roller clutch control
signal
signal
Resist roller clutch ON/
OFF control
OFF control
Paper
transport
—
13
8
PCU
XRSVOUT2
Reserved
Reserved
—
—
5
7
PCU
XSTART
Polygon mirror motor drive
start signal
start signal
Polygon mirror motor
control
control
ON
OFF
16
25
PCU
Signal name
Name
Function/Operation
Connector level
Connector
No.
Pin
NO.
PWB
name
Remark
L
H
AR-M351U/M451U, AR-M355U/M455U ELECTRICAL SECTION 13 - 23
*1: Multi paper feed tray vertical size detection
*2: Options
XSYNC
LSU horizontal sync
detection signal
detection signal
LSU horizontal sync
detection (BD sensor
signal)
detection (BD sensor
signal)
—
—
16
4
PCU
XTHV+PWM
Transfer charger output
control signal (THV+)
control signal (THV+)
Transfer charger output
control (PWM control)
control (PWM control)
—
—
15
6
PCU
XTHV-PWM
Transfer charger output
control signal (THV-)
control signal (THV-)
Transfer charger output
control (PWM control)
control (PWM control)
—
—
15
9
PCU
XTHVREM
Transfer charger control
signal (THV)
signal (THV)
Transfer charger ON/OFF
control
control
ON
OFF
15
12
PCU
XTRC
Paper transport roller
clutch control signal
clutch control signal
Paper transport roller ON/
OFF control
OFF control
—
—
13
12
PCU
XTRC_DSK
Paper transport timing
signal
signal
Paper transport timing
—
—
11
18
PCU
XVFM1_PWM Cooling fan control signal
Cooling fan control
Max. air flow
OFF
16
16
16
23
26
26
PCU
XVFM2PWM
Heat exhaust fan control
signal
signal
Heat exhaust fan control
Max. air flow
OFF
4
22
PCU
XVIDEO
Image signal
Image signal to the LSU
—
—
16
14
PCU
Vertical size detection: Connector level
Paper size
Multi paper feed tray 1
M1SS1
M1SS2
M1SS3
M1SS4
AB series
Inch series
China series
Multi paper feed tray 2
M2SS1
M2SS2
M2SS3
M2SS4
1
L
L
H
L
B5
Extra
K16
2
H
L
H
L
A4
A5R
LT
INVR
A4
A5R
3
H
L
L
L
B5R
EX-R
K16R
4
H
H
L
L
A4R
LTR
A4R
5
L
H
L
L
Foolscap
Extra
Foolscap
6
L
H
L
H
B4
LGL
K8
7
L
L
L
H
A3
WLT
0
H
H
H
H
Tray not installed
No.
CV_SIZE3
CV_SIZE2
CV_SIZE1
CV_SIZE0
Paper size
0
0
0
0
0
none
1
0
0
0
1
A3
2
0
0
1
0
A4
3
0
0
1
1
LT
4
0
1
0
0
B4
5
0
1
0
1
LG
6
0
1
1
0
WLT
7
0
1
1
1
INV
8
1
0
0
0
B5
9
1
0
0
1
Extra
10
1
0
1
0
A5
11
1
0
1
1
F4
12
1
1
0
0
A4R
13
1
1
0
1
B5R
14
1
1
1
0
LTR
15
1
1
1
1
A5R
Signal name
Name
Function/Operation
Connector level
Connector
No.
Pin
NO.
PWB
name
Remark
L
H
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