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This section transports toner to the developing section.

DEVELPING(C)

3

4

TONER

CONCENTRATION

SENSOR

TONER

DEVELOPPER

DEVELOPING

UNIT(C)

TONER HOPPER

UNIT(C)

TONER MOTOR

3

4

TONER

DEVELOPPER

TONER

CONCENTRATION

SENSOR

DEVELPING(K)

DEVELOPING

UNIT(K)

TONER HOPPER

UNIT(K)

TONER MOTOR

4

TONER

DEVELOPPER

DV MOTOR(BLACK)

TONER

CONCENTRATION

SENSOR

DEVELPING(Y)

DEVELOPING

UNIT(Y)

TONER HOPPER

UNIT(Y)

TONER MOTOR

DV MOTOR (COLOR)

3

3

4

TONER

DEVELOPPER

TONER

CONCENTRATION

SENSOR

TONER HOPPER

UNIT(M)

DEVELOPING

UNIT(M)

TONER MOTOR

DEVELPING(M)

PROCESS

CONTROL

PWB

DCPS

CN8

(3pin)

CN6

(3pin)

CN9

(10pin)

CN7

(10pin)

CN4

(3pin)

CN5

(10pin)

CN2

(3pin)

CN3

(10pin)

CN10

(12pin)

CN702

(40pin)

PCU

PWB

CN113

(34pin)

CN112

(32pin)

CN1

(15pin)

DV/TONER HOPPER SECTION

DLK

DMSK

TCSK

DLC

DMSC

TCSC

DLM

DMSM

TCSM

DLY

DMSY

TCSY

DV UNIT

TONER HOPPER UNIT

TMK

TMY

TMM

TMC

1

5

10

6

2

3

4

7

5

5

5

6

7

6

7

6

7

6

AR-C150

2 – 31

No.

Parts

Note

Code

Signal

name

Name

Type

Function/Operation

Active

condition

1

Hopper unit

Stores toner and transports toner to the
developing unit.

2

Toner transport screw

Transports toner to the developing unit.

3

Toner pipe shutter

Prevents toner from spilling.

4

Shutter spring

Spring for the shutter

5

Toner hopper shutter

Shutter for the toner supply port.

6

Toner stirring plate

Stirs toner in the toner hopper.

7

TM 
(Y, M, C, K)

TM 
(Y, M, C, K)

Toner supply motor

Synchronous motor

Transports toner to the developing unit,
and stirs toner.

The toner collection section is divided according to colors. Each color
toner is transported by the toner transport screw. The transport screw
is driven by the toner motor.

The toner hopper unit is provided with the toner stirring plate, which
stirs toner so as to keep toner from hardening.

Toner motor

Toner strring plate

2

3

5

1

4

AR-C150

2 – 32

No.

Parts

Note

Code

Signal

name

Name

Type

Function/Operation

Active

condition

1

Coupler

Transmits the black developing drive
motor 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.

4

Waste toner bottle

Collects waste toner.

5

TFD

TFD

Waste toner full sensor

Photo sensor (Photo
transmission)

Detects waste toner full.

H when bottle
empty and
waste toner full

Waste toner generated in the OPC drum unit is transported by the
waste toner transport screw to the waste toner bottle.

The waste toner transport screw is driven by the black developing
drive unit.

When the waste toner bottle is full, the waste toner full sensor detects
it.

This section performed the following functions and operations.

1) Toner attached on the paper in the transfer section is fused by

heat and pressure by the heat roller.

2) Fusing oil is used to improve fusing capability and separation ca-

pability after fusing.

FUSING

HEART 
ROLLER

OIL PUMP

CLEANING 
ROLLER

FUSER 
MOTOR

FUSER OIL

PAPER 
DISCHARGE

DISCHARGE

ROLLER

HEARTER 
LAMP

FUSER CONTROL PWB
(AC SUB POWER PWB)

PRINTED 
PAPER

PCU

SUB

PWB

DCPS

SUB

DCPS

CNA

(34pin)

CNA

(34pin)

CNC

(10pin)

CNF

(14pin)

CN702

(40pin)

PCU

PWB

CN110

(14pin)

CN112

(32pin)

CN111

(34pin)

FUSING UNIT

AC

SUB

PWB

(100V)

FUSING UNIT

TO AC

CIRCUIT

SECTION

BTM

OEMP

CN712

(14pin)

AC

PWB

CN304

(5pin)

THS1
THS2
THS3
THS4

BPD

DPID

DGS

FOP

FUSM

BELT CH2

BELT CH1

FWS

HL2

HL1

PCU

SUB

PWB

DCPS

SUB

DCPS

CNA

(34pin)

CNA

(34pin)

CNC

(10pin)

CNF

(14pin)

CN702

(40pin)

PCU

PWB

CN110

(14pin)

CN112

(32pin)

CN111

(34pin)

FUSING UNIT (200V)

AC

SUB

PWB

(200V)

FUSING UNIT

TO AC

CIRCUIT

SECTION

BTM

OEMP

BELT CH2

BELT CH1

CN712

(14pin)

AC

PWB

CN304

(5pin)

THS1
THS2
THS3
THS4

BPD

DPID

DGS

FOP

FUSM

HL2

FWS

HL1

AR-C150

2 – 33

No.

Parts

Note

Code

Signal

name

Name

Type

Function/Operation

Active

condition

1

Fusing unit

Heats and presses toner on the
paper to fuse it onto the paper.

2

THS3

THS3

Fusing main
temperature sensor
(upper)

Thermistor

Detects the heat roller surface
temperature.

Analog input

3

DPID

DPID

Duplex paper entry
detector

Photo sensor (Photo
transmission)

Detects paper entry to the duplex
unit.

L when paper
entry

4

THS1

THS1

Fusing sub
temperature sensor
(upper)

Thermistor

Detects the heat roller surface
temperature.

Analog input

When a temperature
difference from the
fusing main
temperature sensor
(upper) is detected, it
is judged  that paper
is wrapped around
the fusing roller.

5

HLTSU

HLTSU

Thermostat (upper)

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

6

Cleaning roller
(upper)

Cleans the fusing roller (upper)
surface.

7

FUSM

FUSM

Fusing drive motor

Drives the fusing unit.

8

Oil felt

Supplies oil to the oil roller.

9

Oil blade

Controls the oil quantity on the oil
roller to be even.

10

Oil roller

Applies oil to the upper heat
roller.

11

Upper heat roller

Heats and presses toner on the
paper to fuse it onto the paper.

12

HL1

HL1

Upper heater lamp

Halogen lamp

Heats the heat roller.

1000W

13

DGS

DGS

Duplex gate
solenoid

Drives (open/close) the duplex
paper entry gate.

14

Fusing control
PWB (AC sub PWB)

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

15

Lower separation
pawl

Separate paper mechanically
which was not separated from
the lower heat roller.

16

HL2

HL2

Lower heater lamp

Halogen lamp

Heats the heat roller.

700W

1

2

3

4

5

6

7

8

9

10

11

12

13

14

17

20

19

15

16

18

15

24

22

21

23

26

25

26

26

26

AR-C150

2 – 34