Service manual

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
LH
+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
ADU paper entry detection Paper pass — 12 14 PCU
APOD ADU paper exit sensor
signal
Paper exit detection Paper present 12 15 PCU
APPD1 ADU paper transport
sensor signal 1
ADU upper-stream section
paper pass detection
Paper pass — 12 17 PCU
APPD2 ADU paper transport
sensor signal 2
ADU lower-stream section
paper pass detection
Paper pass — 12 16 PCU
BUP_PR Power save mode relay
signal
Changeover between the
power save mode and the
normal power mode
——2
14
12
14
PCU
CRUCLK Communication CLK CRUM communication
CLK
——53PCU
CRUSDA Communication data/
address signal
CRUM communication
data/address signal
——54PCU
CSS Paper tray insertion
detection signal
Paper tray insertion
detection
With tray Without tray 13 14 PCU
DMCLK OPC drum motor rotating
speed control (CLK) signal
OPC drum motor rotating
speed control
——67PCU
DM-T OPC drum motor lock
detection signal
OPC drum motor lock
detection
Rotation Stop/Lock 6 6 PCU
DSR_PCU Serial communication
control signal
Send control signal (serial
communication)
——225PCU
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
Front door open/close
detection
Front door
open
Front door
close
4
6
6
9
9
15
32
1
2
1
2
1
DSW-L Left door open/close
detection signal
Left door open/close
detection
Left door open Left door
close
4
4
27
28
PCU
DTR_PCU Control signal for serial
communication
Receive control signal
(Serial communication)
——227PCU
DVCH1 DV unit identification
signal 1
Installation
acknowledgment
——81PCU
DVCH2 DV unit identification
signal 2
Installation
acknowledgment
——82PCU
DVCH3 DV unit identification
signal 3
Installation
acknowledgment
——83PCU
FW AC power full wave signal Power monitor ——14 1 PCU
FWP-PCU Flash write protect signal Flash write protect ——229PCU
GND2_Tnin GND GND 5 1 PCU
HLCNT1 Fusing roller center
section heater lamp
control signal
Fusing roller center
section heating control
OFF ON 14 5 PCU
HLCNT2 Fusing roller both sides
heater lamp control signal
Fusing roller both sides
heating control
OFF ON 14 6 PCU
HLPRout Fusing heater lamp power
relay control signal
Fusing heater lamp power
relay control
Relay OFF Relay ON 14 3 PCU
HSYNC Horizontal sync signal Horizontal sync ——215PCU
HUS-DV Development humidity
sensor
Humidity detection around
the developing unit
——811PCU
LSU_S/H Laser beam horizontal
sync signal
Laser beam horizontal
position timing control
——16 8 PCU
LUD Paper tray upper limit
detection signal
Paper tray upper limit
detection
— Upper limit 13 9 PCU
LUMA Paper tray lift-up motor
control signal
Paper tray lift-up control Stop Up 13 20 PCU
LUMB Paper tray lift-up motor
control signal
Paper tray lift-up control Stop Up 13 18 PCU