Sharp AR-C150 (serv.man5) Service Manual ▷ View online
2. Outline of Imaging Operation
A. Overall block diagram
IMA
GE SCAN(READ)
CONVER
T IMA
GE(LIGHT)
T
O
ELECTRICAL SIGNAL(ANALOG) /
COLOR SEP
ARA
TION / A/D CONVER
T / ZOOMING
IMA
GE PR
OCESS 1
SHADING CORRECTION /
WHITE BLANCE ADJUSTMENT /
D
ARK COMPONENT CORRECTION / GAMMA CORRECTION /
MTF CORRECTION / R,G,B
TIMING CORRECTION
FORGER
Y JUDGMENT
IMA
GE PR
OCESS 2
INPUT PR
OCESS(GAMMA ADJ / COLOR CONVER
T
R,G,B
Y
,M,C
/
HIST
OGRAM PR
OCESS
AREA SEP
ARA
TION(BLA
CK COLOR
TEXT
,DO
T P
A
TTERN,PHO
T
O
IMA
GE
JUDGMENT
PR
ODUCE BLA
CK COLOR
COLOR CORRECTION(COLOR BALANCE ADJUSTMENT)
ZOOMING
FIL
TER PR
OCESS
HALF
T
ONE PR
OCESS(GAMMA CORRECTION / CPT P
A
TTERN OUTPUT)
IMA
GE PR
OCESS 3
OUT PUT PR
OCESS(CONVER
T COLOR IMA
GE D
A
TA
T
O
LASER BEARM D
A
TA
/ ADJUST OUTPUT
TIMING)
PR
ODUCE
ELECTR
OST
AIC
LA
TENT IMA
GE(Y)
DEVELPING(Y)
IMA
GE TRANSFER(Y)
FUSING
DISCHARGE
CHARGE
CLEANING
CLEANING
CONVERT
IMAGE DATA TO
LASER BEARM(Y)
MAIN
CHARGER
UNIT
LSU UNIT(Y)
DEVELOPING
UNIT(Y)
T
ONER
HOPPER
UNIT(Y)
T
ONER
M
OTO
R
DISCHARGE
LAMP
CLEANING
BLADE
DISCHARGE
(Y)
IMA
GE TRANSFER
BEL
T
TRANSFER
R
OLLER (Y)
CLEANING
BLADE
W
ASTE
T
ONER
BO
TTLE
D
V
M
OTO
R
(COLOR)
PR
ODUCE ELECTR
OST
AIC
LA
TENT IMA
GE(M)
DEVELPING(M)
IMA
GE TRANSFER(M)
CONVER
T IMA
GE D
A
TA
T
O
LASER BEARM(M)
DISCHARGE(M)
TRANSFER
R
OLLER(M)
PR
ODUCE ELECTR
OST
AIC
LA
TENT IMA
GE(C)
DEVELPING(C)
IMA
GE TRANSFER(C)
CONVER
T IMA
GE D
A
TA
T
O
LASER BEARM(C)
DISCHARGE(C)
TRANSFER
R
OLLER(C)
PR
ODUCE ELECTR
OST
AIC
LA
TENT IMA
GE(C)
DEVELPING(K)
IMA
GE TRANSFER(K)
CONVER
T IMA
GE D
A
TA
T
O
LASER BEARM(K)
DISCHARGE(K)
TRANSFER
R
OLLER(K)
SCANNING MO
T
O
R
SCANNING MIRR
OR
SCAN ICU PWB
IMA
GE ICU PWB
MAIN ICU PWB
CPT PWB
HEAR
T
R
OLLER
OIL PUMP
CLEANING
R
OLLER
FUSER
M
OTO
R
FUSER OIL
LSU UNIT(M)
SCANNING MO
T
O
R
SCANNING MIRR
OR
LSU UNIT(C)
LASER DIODE
SCANNING MO
T
O
R
SCANNING MIRR
OR
LSU UNIT(K)
LASER DIODE
SCANNING MO
T
O
R
SCANNING MIRR
OR
PHO
TOCONDUCT
OR
DR
UM(Y)
DISCHARGE
CHARGE
CLEANING
MAIN CHARGER
UNIT
DISCHARGE
LAMP
CLEANING BLADE
PHO
TOCONDUCT
OR
DR
UM(M)
DISCHARGE
CHARGE
CLEANING
MAIN CHARGER
UNIT
DISCHARGE LAMP
CLEANING BLADE
PHO
T
OCONDUCT
OR
DR
UM(M)
DISCHARGE
CHARGE
CLEANING
MAIN CHARGER
UNIT
DISCHARGE LAMP
CLEANING BLADE
PHO
TOCONDUCT
OR
DR
UM(K)
TRANSFER
BEL
T
M
OTO
R
P
APER TIMING
CONTR
OL
RRC MO
T
O
R
P
APER FEED (
´
4)
MANU
AL P
APER FEED
PAPER TRAY
LIFT UP UNIT
P
APER PICK UP
R
OLLER
P
APER SEP
ARA
TION
R
OLLER / P
APER
FEED R
OLLER
PAPER
TRANSPORT
PAPER
TRANSPORT
ROLLERS
P
APER
TRANSPOR
T
CLUTCH
PAPER FEED CLUTCH
P
APER PICK UP
SOLENOID
P
APER PICK UP
R
OLLER
P
APER SEP
ARA
TION
R
OLLER / P
APER
FEED R
OLLER
PAPER FEED CLUTCH
P
APER PICK UP
SOLENOID
2
2
2
2
P
APER
DISCHARGE
DISCHARGE
R
OLLER
W
ASTE
T
ONER
BO
TTLE
1
1
1
1
1
2
HIGH V
O
LT
A
G
E
PO
WER PWB
(TC)
TRANSFER
UNIT
LIFT MO
T
O
R
P
APER FEED
M
OTO
R
3
3
DR
UM
M
OTO
R
DR
UM MO
T
O
R
DR
UM MO
T
O
R
DR
UM MO
T
O
R
4
4
HIGH V
O
LT
A
G
E
RELA
Y PWB
HIGH V
O
LT
A
G
E
PO
WER PWB
(MC/D
V)
5
5
5
5
5
HEAR
TER
AMP
FUSER CONTR
OL PWB
(A
C SUB PO
WER PWB)
T
ONER
DEVELOPPER
DEVELOPING
UNIT(M)
T
ONER HOPPER
UNIT(M)
T
ONER MO
T
O
R
3
4
T
ONER
CONCENTRA
TION
SENSOR
T
ONER
DEVELOPPER
DEVELOPING
UNIT(C)
T
ONER HOPPER
UNIT(C)
T
ONER MO
T
O
R
3
4
T
ONER
DEVELOPPER
DEVELOPING
UNIT(K)
T
ONER HOPPER
UNIT(K)
T
ONER MO
T
O
R
4
T
ONER
DEVELOPPER
PRINTED
P
APER
ORIGINAL
IMA
GE SCANER(READ) SECTION
SCANNER LAMP
MIR
ORS
LENS
CCD
SCANNER MO
T
O
R
SCANNER LAMP
CONTR
OL PWB
P
APER
P
APER
PCU PWB
PCU SUB PWB
DC PO
WER PWB
OPERA
TION UNIT
D
V
MO
T
OR(BLA
CK)
LASER DIODE
T
ONER
CONCENTRA
TION
SENSOR
T
ONER
CONCENTRA
TION
SENSOR
TONER
CONCENTRA
TION
SENSOR
LASER DIODE
AR-C150
1 – 3
B. Outline of operations in each operation mode
(1) Color mode
a. The original images are read.
∗
Color separation is made into R, G, and B.
∗
The contrast of light is converted into electric signals.
b. Input process (Image process 1)
∗
Image correction is made.
c. Color conversion, area separation, black generation, color
correction, half tone process, filter process (image process 2)
∗
Area separation, color correction, half tone process, and filter
process are performed.
process are performed.
∗
RGB image data are converted into YMC image data.
∗
K image data are formed from RGB image data.
d. Video data generation (Image process 3)
∗
YMC image data are converted into video data.
e. Latent electrostatic images are formed (exposed) on the OPC
drum.
∗
The OPC drum is exposed with laser beams.
f. Development
∗
The latent electrostatic images are formed into visible images by
toner.
toner.
g. Transfer
∗
Toner images are transferred onto paper.
h. Fusing
∗
Toner on the paper is fused.
(2) Monochrome mode
a. The original images are read.
∗
Color separation is made into R, G, and B.
∗
The contrast of light is converted into electric signals.
b. Input process (Image process 1)
∗
Image correction is made.
c. Color conversion, area separation, black generation, color
correction, half tone process, filter process (image process 2)
∗
Area separation, color correction, half tone process, and filter
process are performed.
process are performed.
∗
RGB image data are converted into M image data.
∗
M image data are used as K image data.
d. Video data generation (Image process 3)
∗
K image data are converted into video data.
e. Latent electrostatic images are formed (exposed) on the OPC
drum.
∗
The OPC drum is exposed with laser beams.
f. Development
∗
The latent electrostatic images are formed into visible images by
toner.
toner.
g. Transfer
∗
Toner images are transferred onto paper.
h. Fusing
∗
Toner on the paper is fused.
SCANNING IMAGE (READ)
TRANSFER IMAGE
FUSIN/
EXIT
EXIT
PAPER
SUPPLY
SUPPLY
IMAGE PROCESS 1 (INPUT PROCESS/CORRECTION)
IMAGE PROCESS 3 (PRODUCE VIDEO DATA)
COLOR CONVERSION
PRODUCE BLACK
DEVELOPING
(Y)
DEVELOPING
(M)
DEVELOPING
(C)
DEVELOPING
(K)
SCANNING
(WRITING)
EXPOSE (Y)
SCANNING
(WRITING)
EXPOSE (M)
SCANNING
(WRITING)
EXPOSE (C)
SCANNING
(WRITING)
EXPOSE (K)
IMAGE PROCESS 2 (COLOR CONVERSION/AREA SEPARATION/
COLOR CORRECTION/HALF TONE PROCESS/FILTER PROCESS)
SCANNING IMAGE (READ)
TRANSFER IMAGE
FUSIN/
EXIT
EXIT
PAPER
SUPPLY
SUPPLY
IMAGE PROCESS 1
(INPUT PROCESS/CORRECTION)
IMAGE PROCESS 3 (PRODUCE VIDEO DATA)
COLOR CONVERSION
MAGENTA
SCANNING
(WRITING)
(EXPOSE) (Y)
SCANNING
(WRITING)
(EXPOSE) (M)
SCANNING
(WRITING)
(EXPOSE) (C)
SCANNING
(WRITING)
(EXPOSE) (K)
DEVELOPING
(Y)
DEVELOPING
(M)
DEVELOPING
(C)
DEVELOPING
(K)
IMAGE PROCESS 2 (COLOR CONVERSION/AREA SEPARATION/
COLOR CORRECTION/HALF TONE PROCESS/FILTER PROCESS)
AR-C150
1 – 4
3. Outline of Electrical Section
A. Electrical section block diagram
AR-C150
1 – 5
B. Major PWB units and functions
No.
Parts
Note
Name
Function/Operation
1
Operation PWB L
Outputs the key operation signals.
2
OP control PWB
Controls the whole operation unit. (Displays information from the PCU PWB,
and sends operation information to the PCU PWB.)
and sends operation information to the PCU PWB.)
Differs in AR-C150 and
AR-C100.
AR-C100.
3
Operation PWB R
Outputs the key operation signals.
4
LCD back light inverter PWB
Drives the LCD back light.
5
ICU-Main PWB
Controls the ICU SCN PWB, ICU IMG PWB, and CCD PWB. Converts digital
image data into video signals and sends them to the scanner (writing) unit.
image data into video signals and sends them to the scanner (writing) unit.
Differs in AR-C150 and
AR-C100.
AR-C100.
6
ICU-SCN PWB
Performs correction of images outputted from the CCD.
7
ICU-IMG PWB
Performs image processes such as area separation, color correction, black
generation, gamma correction, and filter process.
generation, gamma correction, and filter process.
Differs in AR-C150 and
AR-C100.
AR-C100.
8
CPT PWB
Recognizes the bank note patterns.
9
Original size sensor PWB
(Light reception)
(Light reception)
Detects the original size.
10
Original size sensor (Light
emitting)
emitting)
Outputs light to detect the original size.
11
CCD power PWB
Outputs the CCD PWB paper power.
12
Scanner motor PWB
Scanner motor control PWB.
Controls the scanner
motor.
motor.
13
PCU sub PWB
Controls the image process section.
14
High voltage power PWB
(MC/DV)
(MC/DV)
Generates the high voltage for main charger and the developing bias voltage.
15
Main charger interface PWB
Interfaces the main charger power.
16
OPC drum motor control PWB
Controls (drives) the OPC drum motor.
17
Scanner lamp control PWB
Controls the scanner lamp
18
Humidity sensor PWB
Detects humidity in the machine.
Each correction of
image process section
is made by this sensor
data.
image process section
is made by this sensor
data.
1
2
3
16
17
18
19
20
22
10
11
13
14
7
6
9
15
4
5
17
19
23
25
20
8
12
31
26
27
24
29
30
28
28
30
29
AR-C150
1 – 6
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