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No.

Parts

Model

Note

Code

Signal

name

Name

Type

Function/Operation

Active

condition

10

CALS

CALS

Sensor switch
solenoid

Selects the image density
sensor.

Switches the
sensor angle
depending on
detection of
color toner
patch density or
black toner
patch density.

11

TC high voltage
power PWB

Generates the high voltage
for transfer.

12

Transfer belt

Transfers toner images on
the OPC drum onto paper.

13

Waste toner tank

Collects toner of toner patch
used in image density
correction.

14

Transfer belt
cleaning blade

Cleans toner of toner patch
used in image density
correction.

15

Transfer belt idle
roller

Applies a tension to the
transfer belt.

16

Transfer belt
cleaning pad

Cleans the back of the
transfer belt.

17

BLUD

BLUD

Transfer belt
position sensor

Photo sensor
(Photo
transmission)

Detects that the transfer belt
is lifted up or down.

L when lifting
up H when
lifting down

18

BTM

BTM

Transfer belt
drive motor

Stepping motor

Drives the transfer belt.

19

PSM

PSM

Resist roller
drive motor

Stepping motor

Drives the resist roller and
controls ON/OFF.

20

HUD

HUD

Temperature
sensor

Detects humidity in the
machine.

Analog input

Each correction
of image
process section
is made
according to
this sensor data.

21

PCU sub PWB

Controls the image process
section.

22

Oil pump

Supplies fusing oil to the
fusing roller.

23

PPD1

PPD1

Paper detector in
front of resist
roller

Photo sensor
(Photo
transmission)

Detects paper in front of the
resist roller.

L with paper
presence

This detector
signal serves as
the paper
transport timing
control signal to
the transfer
section.

24

Upper resist roller

Transports paper to the
transfer section.

25

Lower resist roller

Transports paper to the
transfer section.

The operation
timing is
controlled by
the resist roller
motor.

26

BELTCH1 BELTCH1 Transfer belt

installation
detection switch
(+24V)

Micro switch

Turns ON/OFF the +24V
power line from the DC main
power PWB to the PCU PWB.

ON when the
transfer unit
operation is
allowed.

27

BELTCH2 BELTCH2 Transfer belt

installation
detection switch
(+5V)

Micro switch

Turns ON/OFF the +5V
power line from the DC main
power PWB to the PCU PWB.

ON when the
transfer unit
operation is
allowed.

28

Resist roller
cleaner

Cleaning the resist roller

AR-C160/
C270

5 –  7A

1

2

3

16

17

18

19

22

10

11

13

14

7

6

9

15

4

5

17

19

23

25

8

12

31

26

27

24

29

30

28

28

30

29

20

1

2

3

17

18

19

22

10

11

13

14

7

6

20

9

15

16

4

5

17

19

23

25

8

12

31

26

27

24

29

30

28

28

30

29

5 –  8A

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.)

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.

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.

8

CPT PWB

Recognizes the bank note patterns.

9

Original size sensor PWB
(Light reception)

Detects the original size.

10

Original size sensor (Light
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.

13

PCU sub PWB

Controls the image process section.

14

High voltage power PWB
(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/Signal
interface PWB

Controls (drives) the OPC drum motor. (AR-C150/C250/C160/C270)
Signals are interfaced. (AR-C160/C270)

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.

19

PCU MAIN PWB

Controls the engine section.

20

CCD ICU interface PWB

Relays the signal of CCD PWB and ICU-SCN PWB. (AR-C150/C250)
Generates the clock at the time of monochrome print operation and relays the
signal of CCD PWB and ICU-SCN PWB. (AR-C160/C270)

21

Paper tray lift unit control PWB

Controls the paper tray lift unit.

Provided in each
paper 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.

24

PFD PWB unit

Equipped with No. 3/4 paper tray paper exit detectors and the right lower door
open/close detector.

25

Process control PWB

Interfaces signals between the developing unit, OPC drum unit, the high voltage
PWB, and the PCU PWB.

26

Fusing control PWB (AC sub
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
(AR-C100/C150/C250)
DC power PWB
(AR-C160/C270)

Generates the voltage used by the other units than the operation unit.

29

DC sub power PWB
(AR-C150/C250)
Power control PWB
(AR-C160/C270)

Generates the voltage for the operation unit (AR-C150/C250)
Controls powers of 24V, 5V and 3.3V in the sleep mode, the preheat mode, and
the normal mode. (AR-C160/C270)

30

AC power PWB

Controls the primary side power (AC power).

31

CCD PWB

Converts original images (light) into electrical signals.

5 –  9A

No.

Parts

Note

Code

Name

Type

Spec

Function/Operation

1

F1

Scanner motor
power fuse

Normal fuse

Protects the scanner motor and its control
circuit from an overcurrent.

Scanner motor
control PWB

2

HLTSU

Upper heat roller
thermostat

Thermostat

Cuts conduction to the heater lamp when the
temperature rises abnormally.

Fusing unit

3

HLTSD

Lower heat roller
thermostat

Thermostat

Cuts conduction to the heater lamp when the
temperature rises abnormally.

Fusing unit

4

F101

OPC drum motor
power fuse

Normal fuse

Protects the OPC drum motor and its control
circuit from an overcurrent.

OPC drum motor
control PWB

5

F701

Scanner lamp
power fuse

Normal fuse

250V 4A

Protects the scanner lamp from an overcurrent.

Scanner lamp
control PWB

6

F712

DC sub power
26V power fuse

Normal fuse

250V 1A

Protects the PCC main PWB and the operation
control PWB form an overcurrent.

DC sub power
PWB

7

F711

DC sub power
primary size fuse

Normal fuse

250V 3.15A

Protects the DC sub power primary side from
an overcurrent.

DC sub power
PWB

8

F101

AC main power
primary side fuse

Normal fuse

125V 20A

Protect the AC main power primary side from
an overcurrent.

Japan

AC main power
primary side fuse

Normal fuse

250V 15A

Protect the AC main power primary side from
an overcurrent.

100V series

AC main power
primary side fuse

Normal fuse

240V 10A

Protect the AC main power primary side from
an overcurrent.

200V series

9

F102

AC main power
primary side fuse

Normal fuse

125V 20A

Protect the AC main power primary side from
an overcurrent.

Japan

AC main power
primary side fuse

Normal fuse

240V 10A

Protect the AC main power primary side from
an overcurrent.

200V series

10

F702

DC main power
+ 5V fuse

Normal fuse

125V 6.3A

Protects the ICU PWB from an overcurrent.

100V series

11

F703

DC main power
+ 5V fuse

Normal fuse

125V 6.3A

Protects the PCU main PWB, LSU, and CCD
power PWB from an overcurrent.

100V series

1

2

10

16

3

17

4

5

6

7

8

9

11

12

13

14

15

5 –  10A