Sharp AR-C330 (serv.man5) Service Manual ▷ View online
AR-C330 EXTERNAL VIEW AND INTERNAL STRUCTURE 5 - 18
d. Main charger unit
e. OPC drum unit
10
Developing roller
main pole position
adjustment plate
main pole position
adjustment plate
Adjusts the developing roller
main pole position.
main pole position.
11
TCS
(Y, M, C, K)
(Y, M, C, K)
TCS
(Y, M, C, K)
(Y, M, C, K)
Toner concentration
sensor
sensor
Magnetic
Detects the ratio of carrier and
toner in the developing unit.
toner in the developing unit.
Analog input Installed to each
developing unit.
12
Developing roller
Adheres toner onto the OPC
drum.
drum.
13
Toner mixing roller
Stirs toner and carrier to make
the toner concentration even
and charges the both.
the toner concentration even
and charges the both.
14
Absorbing duct
Removes toner dispersed
around the developing roller.
around the developing roller.
Prevents against
dirty copy by
dispersed toner.
dirty copy by
dispersed toner.
No.
Parts
Code
Signal name
Name
Type
Function/Operation
Active condition
1
Main charger unit (Y)
Charges yellow photoconductor negatively.
2
Main charger unit (M)
Charges magenta photoconductor negatively.
3
Main charger unit (C)
Charges cyan photoconductor negatively.
4
Main charger unit (K)
Charges black photoconductor negatively.
5
Charger case
Case for charging
6
Charger grid
Controls the photoconductor charging potential.
7
Charger electrode
Electrode for charging
No.
Parts
Note
Code
Signal name
Name
Type
Function/Operation
Active
condition
1
5
8
7
11
2
3
4
6
9
10
6
7
5
8
11
AR-C330 EXTERNAL VIEW AND INTERNAL STRUCTURE 5 - 19
f. Transfer section
No.
Parts
Code
Signal
name
Name
Type
Function/Operation
Active
condition
1
OPC drum unit (Y)
Forms yellow latent electrostatic images.
2
OPC drum unit (M)
Forms magenta latent electrostatic images.
3
OPC drum unit (C)
Forms cyan latent electrostatic images.
4
OPC drum unit (K)
Forms black latent electrostatic images.
5
DL
DL
Discharge lamp
Discharges electric charges on the OPC drum.
6
OPC drum
Forms latent electrostatic images.
7
Cleaning blade
Cleans residual toner from the OPC drum.
8
Waste toner transport screw
Discharges waste toner from the OPC drum unit.
9
Shutter spring
Spring for the shutter
10
Shutter
Prevents toner from dispersing.
11
Toner seal
Shields toner to prevent against leakage.
2
3
4
5
6
7
8
9
10
29
11
12
14
15
16
18
19
20
13
21
22
13
14
16
10
29
8
12
15
5
6
4
3
2
17
7
5
5
5
6
6
6
23
24
25
26
27
1
AR-C330 EXTERNAL VIEW AND INTERNAL STRUCTURE 5 - 20
No.
Parts
Model
Note
Code
Signal
name
Name
Type
Function/Operation
Active
condition
1
Transfer unit
Transfers toner from the
OPC drum to paper.
OPC drum to paper.
2
Transfer belt
separation pawl
separation pawl
Separates paper from the
transfer belt mechanically.
transfer belt mechanically.
3
BPSS
BPSS
Separation pawl
solenoid
solenoid
Drives the separation
solenoid.
solenoid.
4
Transfer belt
drive roller
drive roller
Drives the transfer belt.
5
Transfer
discharge
electrode
discharge
electrode
Discharges electric
charges of the transfer
belt.
charges of the transfer
belt.
4 pcs (Y, M, C,
K)
K)
6
Transfer roller
Applies a transfer voltage
to the transfer belt.
to the transfer belt.
4 pcs (Y, M, C,
K)
K)
7
Lift cam
Transmits the transfer belt
lift motor power to the
transfer unit.
lift motor power to the
transfer unit.
Lifted up in color
print mode, and
lifted down in
monochrome
mode.
print mode, and
lifted down in
monochrome
mode.
8
PCS
PCS
Image density
sensor
sensor
Photo sensor
(Photo reflection)
(Photo reflection)
Detects toner patch
density in image density
correction.
density in image density
correction.
Analog input
9
BLUM
BLUM
Transfer belt
motor
motor
Stepping motor
Lifts the transfer belt unit.
10
CALS
CALS
Sensor switch
solenoid
solenoid
Selects the image density
sensor.
sensor.
Switches the
sensor angle
depending on
detection of color
toner patch
density or black
toner patch
density.
sensor angle
depending on
detection of color
toner patch
density or black
toner patch
density.
11
TC high voltage
power PWB
power PWB
Generates the high
voltage for transfer.
voltage for transfer.
12
Transfer belt
Transfers toner images on
the OPC drum onto paper.
the OPC drum onto paper.
13
Waste toner tank
Collects toner of toner
patch used in image
density correction.
patch used in image
density correction.
14
Transfer belt
cleaning blade
cleaning blade
Cleans toner of toner
patch used in image
density correction.
patch used in image
density correction.
15
Transfer belt idle
roller
roller
Applies a tension to the
transfer belt.
transfer belt.
16
Transfer belt
cleaning pad
cleaning pad
Cleans the back of the
transfer belt.
transfer belt.
17
BLUD
BLUD
Transfer belt
position sensor
position sensor
Photo sensor
(Photo
transmission)
(Photo
transmission)
Detects that the transfer
belt is lifted up or down.
belt is lifted up or down.
L when lifting
up H when
lifting down
up H when
lifting down
18
BTM
BTM
Transfer belt
drive motor
drive motor
Stepping motor
Drives the transfer belt.
19
PSM
PSM
Resist roller drive
motor
motor
Stepping motor
Drives the resist roller and
controls ON/OFF.
controls ON/OFF.
20
HUD
HUD
Temperature
sensor
sensor
Detects humidity in the
machine.
machine.
Analog input
Each correction
of image process
section is made
according to this
sensor data.
of image process
section is made
according to this
sensor data.
21
PCU sub PWB
Controls the image
process section.
process section.
22
Oil pump
Supplies fusing oil to the
fusing roller.
fusing roller.
AR-C330 EXTERNAL VIEW AND INTERNAL STRUCTURE 5 - 21
g. Waste toner collection unit
23
PPD1
PPD1
Paper detector in
front of resist
roller
front of resist
roller
Photo sensor
(Photo
transmission)
(Photo
transmission)
Detects paper in front of
the resist roller.
the resist roller.
L with paper
presence
presence
This detector
signal serves as
the paper
transport timing
control signal to
the transfer
section.
signal serves as
the paper
transport timing
control signal to
the transfer
section.
24
Upper resist
roller
roller
Transports paper to the
transfer section.
transfer section.
25
Lower resist
roller
roller
Transports paper to the
transfer section.
transfer section.
The operation
timing is
controlled by the
resist roller
motor.
timing is
controlled by the
resist roller
motor.
26
BELTCH1
BELTCH1
Transfer belt
installation
detection switch
(+24V)
installation
detection switch
(+24V)
Micro switch
Turns ON/OFF the +24V
power line from the DC
main power PWB to the
PCU PWB.
power line from the DC
main power PWB to the
PCU PWB.
ON when the
transfer unit
operation is
allowed.
transfer unit
operation is
allowed.
27
BELTCH2
BELTCH2
Transfer belt
installation
detection switch
(+5V)
installation
detection switch
(+5V)
Micro switch
Turns ON/OFF the +5V
power line from the DC
main power PWB to the
PCU PWB.
power line from the DC
main power PWB to the
PCU PWB.
ON when the
transfer unit
operation is
allowed.
transfer unit
operation is
allowed.
28
Resist roller
cleaner
cleaner
Cleaning the resist roller
29
REGS
REGS
Registration
adjustment
sensor
adjustment
sensor
Photo sensor
(Photo reflection)
(Photo reflection)
Detects the toner patch
density in automatic
registration adjustment.
density in automatic
registration adjustment.
Analog input
No.
Parts
Code
Signal
name
Name
Type
Function/Operation
Active condition
1
Coupler
Transmits the black developing drive motor
power to the waste toner transport screw.
power to the waste toner transport screw.
2
Coupler spring
Applies a tension to the coupler.
3
Waste toner screw
Transports waste toner to the waste toner
bottle.
bottle.
4
Waste toner bottle
Collects waste toner.
5
TFD
TFD
Waste toner full
sensor
sensor
Photo sensor (Photo
transmission)
transmission)
Detects waste toner full.
H when bottle empty
and waste toner full
and waste toner full
No.
Parts
Model
Note
Code
Signal
name
Name
Type
Function/Operation
Active
condition
2
3
5
1
4
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