Sharp AR-C150 (serv.man5) Service Manual ▷ View online
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
No.
Parts
Note
Name
Function/Operation
19
PCU PWB (A)
Controls the engine section.
Differs in AR-C150 and
AR-C100.
AR-C100.
20
PCU PWB (B)
Controls the engine section.
Differs in AR-C150 and
AR-C100.
AR-C100.
21
Paper tray lift unit control PWB
Controls the paper tray lift unit.
Provided in each paper
tray lift unit.
tray lift unit.
22
Discharge lamp PWB unit
Discharges electric charges on the OPC drum.
23
IFD PWB
Equipped with No. 1/2 paper tray paper exit detectors and the right upper door
open/close detector.
open/close detector.
24
PFD PWB unit
Equipped with No. 3/4 paper tray paper exit detectors and the right lower door
open/close detector.
open/close detector.
25
Process control PWB
Interfaces signals between the developing unit, OPC drum unit, the high
voltage PWB, and the PCU PWB.
voltage PWB, and the PCU PWB.
26
Fusing control PWB (AC sub
PWB)
PWB)
Interfaces the heater lamp drive control, sensor, detector signals.
27
High voltage power PWB (TC)
Generates the transfer voltage.
28
DC main power PWB
Generates the voltage used by the other units than the operation unit.
29
DC sub power PWB
Generates the voltage used by the operation unit.
30
AC main power PWB
Controls the primary side power (AC power).
31
CCD PWB
Converts original images (light) into electrical signals.
C. Communication line between units
The PWB units and the units are connected with serial data lines with
the MAIN PCU PWB as the center. The PCU MAIN PWB obtains
status information from the units through these lines, and sends com-
mands to the units based on the status information to control the
loads of the units.
the MAIN PCU PWB as the center. The PCU MAIN PWB obtains
status information from the units through these lines, and sends com-
mands to the units based on the status information to control the
loads of the units.
The serial data line between the MAIN PCU PWB and the ICU MAIN
PWB is used to exchange information for arranging the engine opera-
tion with the output timing of image data.
PWB is used to exchange information for arranging the engine opera-
tion with the output timing of image data.
MAIN PCU PWB
ICU MAIN PWB
OPERATION
CONTROL PWB
DUPLEX
UNIT(OPTION)
LARGE CAPACITY
PAPER
TRAY(OPTION)
RIC I/F
SUB PCU PWB
RADF UNIT(OPTION)
SORTER(OPTION)
PROCESS CONTROL
PWB
MAIN BODY SECTION
AR-C150
1 – 7
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