Sharp AR-C330 (serv.man5) Service Manual ▷ View online
AR-C330 EXTERNAL VIEW AND INTERNAL STRUCTURE 5 - 10
g. Right door lower unit
h. Manual paper feed unit
No.
Parts
Code
Signal
name
Name
Type
Function/Operation
Active
condition
1
Right door upper unit
2
Large capacity paper
tray transport roller
tray transport roller
Transports paper fed from the large capacity tray to the
transfer section.
transfer section.
3
Idle roller
Applies a pressure to paper and the transport roller to
give the transport roller power to the paper.
give the transport roller power to the paper.
4
Idle roller
Applies a pressure to paper and the transport roller to
give the transport roller power to the paper.
give the transport roller power to the paper.
No.
Parts
Code
Signal
name
Name
Type
Function/Operation
Active
condition
1
Right door lower unit
Presses paper onto the vertical transport roller at a
proper pressure.
proper pressure.
2
Idle roller
Applies a pressure to paper and the transport roller to
give the transport roller power to the paper.
give the transport roller power to the paper.
2
1
1
1
2
2
3
4
5
6
7
8
8
9
11
15
11
13
14
14
16
10
AR-C330 EXTERNAL VIEW AND INTERNAL STRUCTURE 5 - 11
(4) Scanner (reading) section
No.
Parts
Code
Signal
name
Name
Type
Function/Operation
Active
condition
1
MPED
MPED
Paper detector
Photo sensor (Photo
transmission)
transmission)
Detects paper on the paper tray.
L when paper
presence
presence
2
Paper size (width)
adjuster
adjuster
Adjusts the paper position.
3
MPWS
MPWS
Paper size (width)
sensor
sensor
Variable resistor
Detects the paper width.
4
MPLD1
MPLD1
Paper size
(length) detector 1
(length) detector 1
Photo sensor (Photo
transmission)
transmission)
Detects the paper length.
L when paper
presence
presence
5
MPLD2
MPLD2
Paper size
(length) detector 2
(length) detector 2
Photo sensor (Photo
transmission)
transmission)
Detects the paper length.
L when paper
presence
presence
6
MTOP1
MTOP1
Tray position
detector 1
detector 1
Contact SW
Detects the paper tray position.
L when
collecting
collecting
7
MTOP2
MTOP2
Tray position
detector 2
detector 2
Contact SW
Detects the paper tray position.
H when
collecting
collecting
8
Paper pickup
roller
roller
Feeds paper to the paper feed roller.
9
MPFS
MPFS
Paper pickup
solenoid
solenoid
Presses the paper pickup roller onto the paper.
10
Paper stopper
Prevents against double feed.
11
Manual paper
feed roller
feed roller
Feeds paper to the paper transport section.
13
Separation roller
Separates paper to prevents against double
feed.
feed.
14
Manual transport
roller
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.
the transport roller power to the paper.
16
OHP sensor
Detects an OHP sheet. (Identifies an OHP
sheet from normal paper.)
sheet from normal paper.)
Analog input
4
6
7
8
9
10
11
20
17
23
2
3
5
18
13
15
12
14
16
19
21
22
8
1
AR-C330 EXTERNAL VIEW AND INTERNAL STRUCTURE 5 - 12
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.
image into 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.
scanner section.
5
OCSW
OCSW
Original cover open/
close sensor
close sensor
Photo transmission
Detects open/close of the original
cover.
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.
the scanner unit.
9
CCD power PWB
POWER source for the CCD PWB
circuit.
circuit.
10
Original size detection
light reception PWB
light reception PWB
Receives light for detection of the
original size.
original size.
11
Mirror unit
Pass the original image to the CCD.
12
No. 2 mirror
Passes the original image to No. 3
mirror.
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.
scanner unit B.
15
No. 1 mirror
Passes the original image to No. 2
mirror.
mirror.
16
Reflector
Converges lights from the light source
to reflect onto an original.
to reflect onto an original.
17
Sub reflector
Reflects lights from the light source
onto an original.
onto an original.
18
Scanner lamp
Halogen lamp
Reflect light for the CCD to scan the
original image.
original image.
19
Thermal fuse
Prevents against overheating due to
abnormal lighting of the scanner lamp.
abnormal lighting of the scanner lamp.
20
CCD unit
3 line color CCD
Scans the original image (photo
signals) and converts it into electrical
signals.
signals) and converts it into electrical
signals.
21
Lens
Reduces the original image (photo
signals) to reflect onto the CCD.
signals) to reflect onto the CCD.
22
CCD PWB
Scans the original image (photo
signals) and converts it into electrical
signals.
signals) and converts it into electrical
signals.
Digital
(8bit)
(8bit)
23
Shading sheet
Shading correction reference sheet
AR-C330 EXTERNAL VIEW AND INTERNAL STRUCTURE 5 - 13
(5) Scanner (writing) section
No.
Parts
Code
Signal
name
Name
Type
Function/Operation
Active
condition
1
LSU unit
Converts image signals sent from the ICU PWB into laser
beams to reflect onto the OPC drum.
beams to reflect onto the OPC drum.
5
Laser diode
(integrated with the
control PWB)
(integrated with the
control PWB)
Generates laser beams. (Controls ON/OFF for forming images
and PWM modulation.)
and PWM modulation.)
6
No. 1 cylindrical lens
Laser beam convergence and position correction
7
No. 1 mirror
Passes laser beams to the scanning mirror.
8
No. 2 mirror
Passes laser beams to No. 3 mirror.
9
Filter glass
Prevent dust from attaching to the scanning mirror.
10
Scanning mirror
Scans laser beams and forms images.
11
No. 1 f
θ
lens
Corrects the shape and the pitch of laser beams.
12
No. 3 mirror
Passes laser beams to No. 4 mirror.
13
No. 2 f
θ
mirror
Corrects the shape and the pitch of laser beams.
14
No. 4 mirror
Passes laser beams to the cylindrical mirror.
15
Cylindrical mirror
Passes laser beams to the OPC drum./Performs jitter
correction in the sub scanning direction.
correction in the sub scanning direction.
16
Sensor lens
Converges laser beams and passes to the laser beam sensor.
17
SYNC
SYNC IN
Laser beam sensor
Photo
diode
diode
Detects the laser beam position. The left image print start
position is controlled by this sensor signal.
position is controlled by this sensor signal.
18
Filter glass
Prevents dusts from entering the scanner unit.
19
Polygon motor
cooling fan
cooling fan
Cooling to polygon motor.
20
LSU PWB
LD light emitting, polygon motor operation control.
1
8
5
6
7
17
16
20
11
13
10
9
14
15
15
15
15
18
18
18
18
12
19
14
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