Read Sharp AR-M351U / AR-M451U (serv.man21) Service Manual online
AR-M351U/M451U, AR-M355U/M455U ELECTRICAL SECTION 13 - 19
3. Signal name list
Signal name
Name
Function/Operation
Connector level
Connector
No.
Pin
NO.
PWB
name
Remark
L
H
+24V_PR
Power relay 24V
Power relay 24V
—
—
14
2
PCU
+5VLD
5V power for laser diode
5V power for laser diode
—
—
16
31
PCU
ADUSET
ADU detection signal
ADU detection
With ADU
Without ADU
12
22
PCU
APIND
ADU paper entry sensor
signal
signal
ADU paper entry detection
Paper pass
—
12
14
PCU
APOD
ADU paper exit sensor
signal
signal
Paper exit detection
Paper present
12
15
PCU
APPD1
ADU paper transport
sensor signal 1
sensor signal 1
ADU upper-stream section
paper pass detection
paper pass detection
Paper pass
—
12
17
PCU
APPD2
ADU paper transport
sensor signal 2
sensor signal 2
ADU lower-stream section
paper pass detection
paper pass detection
Paper pass
—
12
16
PCU
BUP_PR
Power save mode relay
signal
signal
Changeover between the
power save mode and the
normal power mode
power save mode and the
normal power mode
—
—
2
14
12
14
14
PCU
CRUCLK
Communication CLK
CRUM communication
CLK
CLK
—
—
5
3
PCU
CRUSDA
Communication data/
address signal
address signal
CRUM communication
data/address signal
data/address signal
—
—
5
4
PCU
CSS
Paper tray insertion
detection signal
detection signal
Paper tray insertion
detection
detection
With tray
Without tray
13
14
PCU
DMCLK
OPC drum motor rotating
speed control (CLK) signal
speed control (CLK) signal
OPC drum motor rotating
speed control
speed control
—
—
6
7
PCU
DM-T
OPC drum motor lock
detection signal
detection signal
OPC drum motor lock
detection
detection
Rotation
Stop/Lock
6
6
PCU
DSR_PCU
Serial communication
control signal
control signal
Send control signal (serial
communication)
communication)
—
—
2
25
PCU
DSW-D
ADU door sensor signal
Door open/close detection
Door open
Door close
12
21
PCU
DSW-F
Front door open/close
detection signal
detection signal
Front door open/close
detection
detection
Front door
open
Front door
close
4
6
6
9
9
6
6
9
9
15
32
1
2
1
2
1
2
1
2
1
DSW-L
Left door open/close
detection signal
detection signal
Left door open/close
detection
detection
Left door open
Left door
close
4
4
4
27
28
28
PCU
DTR_PCU
Control signal for serial
communication
communication
Receive control signal
(Serial communication)
(Serial communication)
—
—
2
27
PCU
DVCH1
DV unit identification
signal 1
signal 1
Installation
acknowledgment
acknowledgment
—
—
8
1
PCU
DVCH2
DV unit identification
signal 2
signal 2
Installation
acknowledgment
acknowledgment
—
—
8
2
PCU
DVCH3
DV unit identification
signal 3
signal 3
Installation
acknowledgment
acknowledgment
—
—
8
3
PCU
FW
AC power full wave signal Power monitor
—
—
14
1
PCU
FWP-PCU
Flash write protect signal
Flash write protect
—
—
2
29
PCU
GND2_Tnin
GND
GND
5
1
PCU
HLCNT1
Fusing roller center
section heater lamp
control signal
section heater lamp
control signal
Fusing roller center
section heating control
section heating control
OFF
ON
14
5
PCU
HLCNT2
Fusing roller both sides
heater lamp control signal
heater lamp control signal
Fusing roller both sides
heating control
heating control
OFF
ON
14
6
PCU
HLPRout
Fusing heater lamp power
relay control signal
relay control signal
Fusing heater lamp power
relay control
relay control
Relay OFF
Relay ON
14
3
PCU
HSYNC
Horizontal sync signal
Horizontal sync
—
—
2
15
PCU
HUS-DV
Development humidity
sensor
sensor
Humidity detection around
the developing unit
the developing unit
—
—
8
11
PCU
LSU_S/H
Laser beam horizontal
sync signal
sync signal
Laser beam horizontal
position timing control
position timing control
—
—
16
8
PCU
LUD
Paper tray upper limit
detection signal
detection signal
Paper tray upper limit
detection
detection
—
Upper limit
13
9
PCU
LUMA
Paper tray lift-up motor
control signal
control signal
Paper tray lift-up control
Stop
Up
13
20
PCU
LUMB
Paper tray lift-up motor
control signal
control signal
Paper tray lift-up control
Stop
Up
13
18
PCU
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