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AR-C330  EXTERNAL VIEW AND INTERNAL STRUCTURE  5 - 34

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

5

F701

Scanner lamp 
power fuse

Normal fuse

250V 4A

Protects the scanner lamp from an 
overcurrent.

Scanner lamp 
control PWB

6/7

F102/F101

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

8

F706

DC power 
primary side fuse

Normal fuse

250V 6.3A

Protect the DC power primary side from 
an overcurrent.

200V series

9

F2

DC main power 
+24V

Normal fuse

125V 6.3A

Overcurrent protection of the LSU, the 
OPC drum motor, the RADF, the 
finisher, the PCU MAIN PWB, the  paper 
feed/transport section motors

100V series

F701

DC main power 
+24V

Normal fuse

250V 6.3A

200V series

10

F3

DC main power 
+24V

Normal fuse

125V 4.0A

Overcurrent protection of the PCU SUB 
PWB, the transfer belt section motor, 
the fusing motor, the developing motor 
(color), the CD power PWB, and the 
high voltage (TC) PWB

 100V series

F702

DC main power 
+24V

Normal fuse

250V 6.3A

200V series

1

2

3

5

100V

200V

9

10

11

8

9

6/7

10

11

12

AR-C330  EXTERNAL VIEW AND INTERNAL STRUCTURE  5 - 35

11

F4

DC main power 
+24V

Normal fuse

125V 4.0A

Overcurrent protection of the developing 
motor (black), the high voltage (MC, DV) 
PWB, the LCC, the scanner motor, the 
operation PWB, the ADU, and the 
printer controller

 100V series

F703

DC main power 
+24V

Normal fuse

250V 4A

200V series

12

Scanner lamp 
temperature fuse

Temperature 
fuse

104°C 250V 
10A

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

No.

Parts

Note

Name

Function/Operation

Spec

1

CCD power PWB

Outputs the CCD PWB power.

2

High voltage power 
PWB (TC)

Generates the transfer voltage.

3

Fusing control PWB 
(AC sub PWB)

Interfaces the heater lamp drive control, the sensor, and the detector 
signals.

4

DC main power 
PWB

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

5

AC main power 
PWB

Controls the power (AC power) on the primary side.

6

High voltage power 
PB (MC/DV)

Generates the high voltage for the main charger and the developing 
bias voltage.

No.

Parts

Note

Code

Name

Type

Spec

Function/Operation

1

2

3

4

5

6

AR-C330  EXTERNAL VIEW AND INTERNAL STRUCTURE  5 - 36

No.

Parts

Note

Code

Name

Function/Operation

1

RV2 (100V series)

+3.4V power voltage adjustment volume

Adjusts the +3.4V power voltage.

DC power PWB

2

VR702 (200V series)

+5V power voltage adjustment volume

Adjusts the +5Vpower voltage. (200V series)

DC power PWB

3

VR701 (200V series)

+3.4V power voltage adjustment volume

Adjusts the +3.4V power voltage.

DC power PWB

2

4

4

5

1

3

AR-C330  EXTERNAL VIEW AND INTERNAL STRUCTURE  5 - 37

No.

Parts

Note

Name

Function/Operation

1

Scanner lock screw

Locks the scanner. (Prevents the scanner from moving in transit.)

Be sure to 
lock in transit.

2

Transfer unit lock screw

Locks the transfer unit. (Prevents the transfer unit from moving in transit.)

3

Paper tray lock block

Locks the paper lift plate.

4

Fusing, transfer unit lock screw

Locks the fusing, transfer unit. (Prevents the transfer unit from projecting in 
transit.)

5

Paper guide lock screw

Locks the paper guide.

No.

Code

Name

Type

Function and operation

1

DPPD1

Transport sensor 1

Photosensor

ADU paper-in sensor

2

DPPD2

Transport sensor 2

Photosensor

ADU transport sensor

3

DPPD3

Transport sensor 3

Photosensor

ADU reverse sensor

4

DPHPS

Alignment home 
position sensor

Photosensor

Alignment plate home position detection

5

DMRE

Transport motor 
encoder

Photosensor

Transport motor speed control sensor

6

DDM

Transport motor

DC motor

ADU transport roller, decurler unit transport roller driver from the 
coupler pulley

7

PAM

Alignment motor

Stepping motor

Alignment guide drive

8

DRM

Reverse motor

Stepping motor

Reverse roller drive for paper feed and paper exit for reverse section

9

DPRS

Reverse roller 
solenoid

Solenoid

Reverse roller pressure release for paper exiting to the copier or for 
alignment

10

DTD

Decurler sensor

Photosensor

Transport sensor for decurler unit

11

ADUSW

ADU switch

Microswitch

Turn ON/OFF the +24V supplied to the ADU main PCB for removal and 
installation of the ADU

12

DDSW

Decurler switch

Microswitch

Turn ON/OFF the +24V supplied to the ADU main PCB for opening and 
closing of the decurler doors

13

DPFC

Transport clutch

Electromagnetic 
clutch

Turn ON/OFF the power for the transport roller

14

DTC1

Decurler clutch

Electromagnetic 
clutch

Switch between normal and double speed for the decurler unit 
transporting

15

BEAR ADU PCB

PC board

Control of ADU unit

16

Motor relay board

PC board

Relay board

5

1

6

16

13

4

15

11

8

3

2

7

9

12

14

10