Sharp AR-C150 (serv.man5) Service Manual ▷ View online
No.
Parts
Note
Code
Signal
name
Name
Type
Function/Operation
Active condition
9
MPFS
MPFS
Paper pickup
solenoid
solenoid
Presses the paper pickup roller onto the
paper.
paper.
10
Paper stopper
Prevents against double feed.
11
Manual paper
feed roller
feed roller
Feeds paper to the paper transport
section.
section.
12
MPFC
MPFC
Manual paper
feed clutch
feed clutch
Electromagnetic
clutch
clutch
Transmits the paper feed motor drive
power to the manual paper feed unit.
(Controls ON/OFF of the manual paper
feed unit.)
power to the manual paper feed unit.
(Controls ON/OFF of the manual paper
feed unit.)
13
Separation roller
Separates paper to prevents against
double feed.
double feed.
14
Manual
transport roller
transport roller
Transports paper to the resist roller.
15
Idle roller
Applies a pressure to the transport roller
to give the transport roller power to the
paper.
to give the transport roller power to the
paper.
16
OHP sensor
Detects an OHP sheet. (Identifies an
OHP sheet from normal paper.)
OHP sheet from normal paper.)
Analog input
C. Details of operations
(1) Paper feed tray section operation
The pickup roller moves up and down to press the paper surface to
separate the top paper, which is sent to the paper feed roller.
separate the top paper, which is sent to the paper feed roller.
The paper feed roller sends the paper to the transport section. The
separation roller prevents against double feed.
separation roller prevents against double feed.
The pickup roller is moved up and down by the pickup solenoid.
ON/OFF control of the pickup roller and the paper feed roller is made
by the paper feed clutch.
ON/OFF control of the pickup roller and the paper feed roller is made
by the paper feed clutch.
The paper lift plate lifts paper to control the upper limit position so that
the pressure between the top paper and the pickup roller is kept con-
stant.
the pressure between the top paper and the pickup roller is kept con-
stant.
This assures stable paper feed operations. Lifting is made by the lift
motor and the lift gear.
motor and the lift gear.
The paper upper limit detector detects the lift position to control the
pressure between the top paper and the pickup roller.
pressure between the top paper and the pickup roller.
The paper feed tray is provided with the paper size detection block.
The concavo-convex surface of the block is detected by the combina-
tion of ON/OFF of the four paper size detectors to identify the paper
size.
The concavo-convex surface of the block is detected by the combina-
tion of ON/OFF of the four paper size detectors to identify the paper
size.
Peper feed clutch
Paper feed motor
Pick up solenoid
Pick up roller
Peper feed roller
Separation roller
Pick up roller
Upper limit detector
Lift plate
Separation roller
Separation roller
Paper feed roller
Lift motor
Pick up roller
Lift motor
Paper detector
Lift position sensot
AR-C150
2 – 7
Paper size detector and paper size
Paper size detector
Paper size
Destination
CSS4
CSS3
CSS2
CSS1
JAPAN
AB series Inch series
ON
OFF
OFF
ON
A3
A3
11
×
17
OFF
OFF
ON
ON
B4
B4
8.5
×
14
ON
OFF
ON
OFF
A4R
A4R
11
×
8.5R
OFF
ON
ON
OFF
A4
A4
11
×
8.5
OFF
ON
ON
ON
B5R
B5
INVOICE
OFF
ON
OFF
ON
B5
A5
FOOLSCAP
ON
ON
ON
OFF
A5
11
×
8.5
A4
ON
ON
OFF
OFF
EXTRA
EXTRA
EXTRA
Other pattern than the above
Recognized as no installation of
the paper tray.
the paper tray.
[EXTRA] Operates on the paper size set by the user program.
The remaining paper quantity is calculated from the rpm of the lift mo-
tor from when the lift position sensor detects the lift plate lower limit
position to when the paper upper limit detector detects the paper up-
per limit.
tor from when the lift position sensor detects the lift plate lower limit
position to when the paper upper limit detector detects the paper up-
per limit.
(2) Manual paper feed section operation (AR-C150 only)
The pickup roller moves up and down to press the paper surface to
separate the top paper, which is sent to the paper feed roller.
The paper feed roller sends the paper to the transport section. The
separation roller and the paper stopper prevent against double feed.
The pickup roller and the paper stopper are moved up and down by
the pickup clutch solenoid. ON/OFF control of the pickup roller and
the paper feed roller is made by the paper. The paper is sent to the
resist roller by the manual paper transport roller.
separate the top paper, which is sent to the paper feed roller.
The paper feed roller sends the paper to the transport section. The
separation roller and the paper stopper prevent against double feed.
The pickup roller and the paper stopper are moved up and down by
the pickup clutch solenoid. ON/OFF control of the pickup roller and
the paper feed roller is made by the paper. The paper is sent to the
resist roller by the manual paper transport roller.
The paper size is detected by the paper length detector and the paper
width detector.
The paper width sensor is of the variable resistor type. It detects the
paper width by detecting the resistance which varies according to the
paper guide position.
width detector.
The paper width sensor is of the variable resistor type. It detects the
paper width by detecting the resistance which varies according to the
paper guide position.
The tray position detector detects that the paper tray is set in the
max. length position or in the min. length position.
When the paper tray is set in the max. length position, the paper
length detector is forcibly turned on. It is identified by the tray position
detector.
max. length position or in the min. length position.
When the paper tray is set in the max. length position, the paper
length detector is forcibly turned on. It is identified by the tray position
detector.
(3) Paper transport section
In this section, the paper fed from the paper feed section is trans-
ported to the transfer section (resist roller) by two or more transport
rollers.
ON/OFF control of the transport rollers is made by the paper transport
clutch.
ported to the transfer section (resist roller) by two or more transport
rollers.
ON/OFF control of the transport rollers is made by the paper transport
clutch.
(4) Paper resist section
The resist roller controls the relative positions of the transported pa-
per and the transfer images.
The resist roller is driven by the resist roller motor.
The relative positions of the paper and the transfer images are deter-
mined by the ON timing of the resist roller motor.
per and the transfer images.
The resist roller is driven by the resist roller motor.
The relative positions of the paper and the transfer images are deter-
mined by the ON timing of the resist roller motor.
(5) Others
∗
The paper transport section is provided with two or more paper
detectors, which performs the following functions.
detectors, which performs the following functions.
1) Paper jam detection
2) Output of basic signals for operating timing of each load
Pick up roller
Pick up solenoid
Paper feed motor
Clutch
Paper stopper
Pick up roller
Paper feed roller
Paper transport roller
Clutch
Pick up clutch solenoid
Separation roller
Paper transport roller
Paper feed roller
Paper transport clutch
Paper transport
roller
Paper feed motor
Resist roller motor
Resist roller
AR-C150
2 – 8
2. Scanner (reading) section
A. Outline
This section performs the following functions and operations.
1) Lights are radiated to an original by the scanner lamp, and the
contrast of the reflected lights is read by the CCD elements of the
RGB lines to convert it into the image signal (analog).
RGB lines to convert it into the image signal (analog).
2) The image signal (analog) is converted into 8bit digital signal by
the A/D converter.
3) The image signal (digital) is sent to the image process section
(ICU PWB).
CCD SECTION
IMAGE SCAN(READ)
CONVERT IMAGE(LIGHT) TO ELECTRICAL SIGNAL(ANALOG) /
COLOR SEPARATION / A/D CONVERT / ZOOMING
COLOR SEPARATION / A/D CONVERT / ZOOMING
ORIGINAL
IMAGE SCANER(READ) SECTION
SCANNER LAMP
MIRORS
LENS
CCD
SCANNER MOTOR
SCANNER LAMP
CONTROL PWB
OPE
CONTROL
PWB
TO AC
CIRCUIT
SECTION
OPTICAL UNIT
OPTICAL UNIT
CN104
(24pin)
CN104
(24pin)
ORS
PD
PWB
SCANER
MOTOR
OPTICAL
UNIT
ORS
LED
PWB
OCSW
CFM1
MHPS
COPY LAMP
PCU
PWB
CN112
(32pin)
CN112
(32pin)
CN112
(32pin)
CN3
(3pin)
CN2
CN2
(3pin)
CN1
CN1
(4pin)
(100V)
CN1
CN1
(4pin)
(100V)
SCANER
MOTOR
DRIVE
PWB
CN2
(6pin)
CN3
(3pin)
CN1
(4pin)
DCPS
CN702
(40pin)
SCANNER
LAMP
CONTROL
PWB
CCD PWB
CN1
CN2
CN3
CN537(8pin)
SCN
CN506(8pin)
MAIN
CN514(6pin)
IMG
ICU SECTION
CN506(9pin)
CCD P/S PWB
PCU PWB
CN535
(32pin)
CN103
(18pin)
DCPS
CN702
(40pin)
CN702
(40pin)
CN703
(8pin)
CN103
(18pin)
CN536
(30pin)
AR-C150
2 – 9
B. Major parts functions and operations
No.
Parts
Note
Code
Signal
name
Name
Type
Function/Operation
Active
condition
1
Scanner unit
Scans an original and converts the image into
electrical signals.
electrical signals.
2
MHPS
MHPS
Scanner home
position sensor
position sensor
Photo sensor (Photo
transmission)
transmission)
Detects the scanner home position.
H in the
home
position
home
position
3
CFM
CFM
Cooling fan (motor)
Axial fan
Cools the scanner section.
4
Filter
Prevents dusts from entering the scanner
section.
section.
5
OCSW
OCSW
Original cover
open/close sensor
open/close sensor
Photo transmission
Detects open/close of the original cover.
L when the
cover is open
cover is open
6
Scanner motor control
PWB
PWB
Controls the scanner motor.
7
SM
SM
Scanner motor
Stepping motor
Drives the scanner unit.
8
Scanner drive wire
Transmits the scanner motor power to the
scanner unit.
scanner unit.
9
CCD power PWB
POWER source for the CCD PWB circuit.
10
Original size detection
light reception PWB
light reception PWB
Receives light for detection of the original size.
11
Mirror unit
Pass the original image to the CCD.
12
No. 2 mirror
Passes the original image to No. 3 mirror.
13
No. 3 mirror
Passes the original image to the CCD.
14
Scanner unit A (Mirror
unit)
unit)
Passes the original image to the scanner unit B.
15
No. 1 mirror
Passes the original image to No. 2 mirror.
16
Reflector
Converges lights from the light source to reflect
onto an original.
onto an original.
17
Sub reflector
Reflects lights from the light source onto an
original.
original.
18
Scanner lamp
Halogen lamp
Reflect light for the CCD to scan the original
image.
image.
19
Thermal fuse
Prevents against overheating due to abnormal
lighting of the scanner lamp.
lighting of the scanner lamp.
20
CCD unit
3 line color CCD
Scans the original image (photo signals) and
converts it into electrical signals.
converts it into electrical signals.
21
Lens
Reduces the original image (photo signals) to
reflect onto the CCD.
reflect onto the CCD.
22
CCD PWB
Scans the original image (photo signals) and
converts it into electrical signals.
converts it into electrical signals.
Digital
(8bit)
(8bit)
23
Shading sheet
Shading correction reference sheet
4
6
7
8
9
10
11
20
17
1
23
2
3
5
18
13
15
12
14
16
19
21
22
8
AR-C150
2 – 10
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