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