Sharp AR-C170 (serv.man24) Service Manual ▷ View online
AR-C170M DESCRIPTIONS OF EACH SECTION 7 - 29
b. Manual paper feed section
(3) Major parts and signals functions and operations
a. Manual paper feed unit
RW: Abbreviation of Related Wiring, which means the said load is specified in the related figure of the mechanical and the electrical sec-
tions.
No.
Name
Code, Signal name
Function
RW
Paper detector
MPED
Detects paper empty/presence in the paper tray.
1
Paper size (width) adjuster
—
Adjusts the paper position.
2
Paper size (width) sensor
MPWS
Detects the paper width.
3
Paper size (length) detector
MPLD1
Detects the paper length.
4
Paper size (length) detector 2
MPLD2
Detects the paper length.
5
Tray position detector
MTOP1
Detects the paper tray position.
6
Tray position detector
MTOP2
Detects the paper tray position.
7
Paper pickup roller
—
Sends paper to the paper feed roller.
8
Manual paper feed roller
—
Feeds paper to the paper transport section.
9
Manual paper feed clutch
MPFC
Transmits the paper feed drive motor power to the manual paper feed roller.
10
Separation roller
—
Separates paper and transmits it to the paper feed unit.
RW
Manual transport clutch
—
Transmits the paper feed motor power to the manual paper feed unit.
RW
Paper feed motor
—
Drives the paper feed section and the manual paper feed unit.
GND2
GND2
GND2
DSWR
DSWRout
CN11(34pin)
(8pin)
(2pin)
(14pin)
CN17(28pin)
+5V
+5V
+24V
+24V
+24V
+3.3V
MPFC\
+24V
MPFC\
DC_ONOFF\
DC_LOCK\
DC_CLK
GND2
+24V
DC_ONOFF\
DC_LOCK\
DC_CLK
MPED
MPED
MPWSin
GND2
+3.3V
MPWSin
MTOP2
MTOP1
MPLD1
MPLD2
MT
OP2
MT
OP1
MPLD1
MPLD2
MTRC\
+24V
MTRC\
HUMiD_AN
TEMP_AN
GND2
GND2
GND2
GND2
GND2
+5V
+5V
+5V
HUD
TEMP
PCU
MTRC
MPED
MPWS
HUD
MTOP2
MPLD2
MPLD2
MPLD1
MPLD1
PFM
Paper feed motor
Right door switch
Paper length
sensor 1
sensor 1
Paper width
sensor
sensor
Manual transport clutch
DSWR
8
8
9
10
11
11
12
13
13
14
14
15
16
17
18
19
20
30
34
24
28
25
23
21
22
7
7
7
7
6
6
5
5
5
4
4
4
3
3
3
3
3
2
2
2
1
1
1
1
3
3
3
3
3
2
2
2
2
2
2
2
2
2
1
1
1
1
1
1
1
1
1
2
1
Tray position
detection switch 2
detection switch 2
Paper length
sensor 2
sensor 2
MPFC
Manual paper feed clutch
Humidity sensor
MTOP1
Tray position
detection
switch 1
detection
switch 1
1
1
6
8
7
2
3
4
5
10
10
8
7
9
AR-C170M DESCRIPTIONS OF EACH SECTION 7 - 30
b. Paper tray lift unit
c. Paper feed unit
No.
Name
Code, Signal name
Function
1
Paper tray lift unit
—
Drives the paper tray lift plate.
2
Paper size detection actuator
—
Transmits the status data of the paper size block to the paper size detector.
3
Paper tray lift unit control PWB
—
Controls the paper tray lift unit.
4
Lift motor
LUMx
Drives the lift plate.
5
Paper size detector (switch)
CxSSx
Detects the paper size set by the paper size set block.
No.
Name
Code, Signal name
Function
1
Paper tray paper feed unit
—
Feeds paper from the paper tray to the transport section.
2A
Paper empty detector
PEDx
Detects paper empty in the paper tray.
2B
Paper upper limit detector
LUDx
Detects the paper upper limit position. (Keeps the friction between the
paper pickup roller and paper at a constant level.)
paper pickup roller and paper at a constant level.)
3
Paper pickup roller
—
Feeds paper to the paper feed roller.
4
Paper feed clutch
CPFCx
Controls ON/OFF of the paper feed roller.
5
Paper feed roller
—
Feeds paper to the paper transport section.
6
Separation roller
—
Separates paper to prevent against double feed.
2
1
3
4
5
3
5
2A
2B
4
1
6
AR-C170M DESCRIPTIONS OF EACH SECTION 7 - 31
d. Paper exit section
(4) Operational descriptions
a. Paper feed tray section operation
The paper pickup roller moves up and down to press paper and
separates the top paper, which is fed to the paper feed roller.
separates the top paper, which is fed to the paper feed roller.
The paper feed roller feeds paper to the paper transport section.
The separation roller prevents against double feed.
The separation roller prevents against double feed.
Up and down movement of the pickup roller is driven by the pickup
solenoid, and ON/OFF control of the pickup roller and the paper
feed roller is performed by the paper feed clutch.
solenoid, and ON/OFF control of the pickup roller and the paper
feed roller is performed by the paper feed clutch.
The paper lift plate lifts paper to control the upper limit position of
paper so that the pressure between the top paper and the pickups
roller remains constant. Lifting is performed by the lift motor and
the lift gear.
paper so that the pressure between the top paper and the pickups
roller remains constant. Lifting is performed by the lift motor and
the lift gear.
The lift position is detected by the paper upper limit detector to
control the pressure between the top paper and the pickup roller.
control the pressure between the top paper and the pickup roller.
No.
Name
Code, Signal name
Function
1
Paper exit sensor
POD2
Detects discharged paper.
2
Offset motor
OSM
Drives the paper exit offset.
3
Shifter home position sensor
HPOS
Detects the offset home position.
4
Paper exit switch gate solenoid
GSS
Drives the face-up/down switch gate.
1
2
3
4
4
Paper feed motor
Paper feed roller
Paper feed clutch
Separation roller
Pickup roller
Pickup
roller
roller
Upper limit detectors
Lift plate
Lift motor
Paper feed
rollers
rollers
Separation
rollers
rollers
Paper size detector
Lift motor
AR-C170M DESCRIPTIONS OF EACH SECTION 7 - 32
The paper feed tray is provided with the paper size detection
block, and the status of this block is detected with the combination
of ON/OFF of the four paper size detectors to recognize the paper
size.
block, and the status of this block is detected with the combination
of ON/OFF of the four paper size detectors to recognize the paper
size.
Relationship between the paper size detector and the paper size
EXTRA: Operates with the paper size set by the user program.
The lift position sensor detects the lift plate lower limit position.
Then lift-up operation is started, and the rotation of the lift motor
up to detection of the upper limit by the paper upper limit detector
is used to calculate the paper remaining quantity.
Then lift-up operation is started, and the rotation of the lift motor
up to detection of the upper limit by the paper upper limit detector
is used to calculate the paper remaining quantity.
b. Manual paper feed section operation
The paper pickup roller moves up and down to press paper and
separates the top paper, which is fed to the paper feed roller.
separates the top paper, which is fed to the paper feed roller.
The paper feed roller feeds paper to the paper transport section.
The separation roller prevents against double feed.
The separation roller prevents against double feed.
The manual paper feed clutch controls ON/OFF of the pickup
roller and the paper feed roller.
roller and the paper feed roller.
The manual transport roller transports paper to the resist roller.
The paper size is detected by the paper length detector and the
paper width sensor.
paper width sensor.
A volume-type sensor is used as the paper width sensor. The
resistance varies according to variation of the paper guide position
to detect the paper width.
resistance varies according to variation of the paper guide position
to detect the paper width.
The tray position detector detects that the paper tray is set to the
maximum length position or to the minimum length position.
maximum length position or to the minimum length position.
When the paper tray is set to the maximum length position, the
paper length detector is forcibly turned ON. This is to recognize it.
paper length detector is forcibly turned ON. This is to recognize it.
c. Paper transport section
This section transports paper from each paper feed section to the
transfer section (resist roller) by two transport rollers.
transfer section (resist roller) by two transport rollers.
The paper transport clutch controls ON/OFF of each transport
roller.
roller.
Paper size detector
Paper size
Destination
CSS4 CSS3 CSS2 CSS1
Japan
AB
series
Inch series
ON
OFF
OFF
ON
A3
A3
11 x 17
OFF
OFF
ON
ON
B4
B4
8.5 x 14
ON
OFF
ON
OFF
A4R
A4R
11 x 8.5R
OFF
ON
ON
OFF
A4
A4
11 x 8.5
OFF
ON
ON
ON
B5R
B5
INVOICE
OFF
ON
OFF
ON
B5
A5
FOOLSCAP
ON
ON
ON
OFF
A5
11 x 8.5
A4
ON
ON
OFF
OFF
EXTRA
EXTRA
EXTRA
Patterns other than above
Recognized that the paper tray
is not inserted.
Transport roller
Transport roller
Paper feed roller
Paper feed roller
Paper stopper
Paper feed motor
Pickup roller
Pickup roller
Separation roller
Separation roller
Clutch
Paper transport roller
Paper transport roller
Paper feed motor
Paper feed clutch
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