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1

Interrupt key and indicator

2

Copy quantity display

3

ZOOM indicator

4

Copy ratio display key

5

Zoom keys

6

PAPER SIZE ENTER key

7

AUDIT CLEAR key

8

PAPER SIZE indicators

9

Alarm indicators

10

POWER SAVE indicator

11

SPF indicator

12

Output tray full indicator

13

B/W REVERSE key and indicator

14

XY-ZOOM key and indicator

15

SORT/GROUP key and indicators

16

ORIGINAL DATA indicator

17

2 IN 1 / 4 IN 1 key and indicators

18

AUTO/MANUAL/PHOTO key and
indicators

19

Light and dark keys and indicators

20

Numeric keys

21

Zero key

22

CLEAR key

23

START key and indicator

24

CLEAR ALL key

25

PRESET RATIO selector keys and
indicators

26

ORIGINAL SIZE ENTER key and
indicators

27

AUTO PAPER SELECT indicator

28

TRAY SELECT key

29

AUTO IMAGE key and indicator

30

Paper feed location/misfeed location
indicators

31

DUAL PAGE COPY key and indicator

32

ERASE key and indicators

33

MARGIN SHIFT key and indicator

*

1

ON:

Indicates that the machine is in the energy saving (pre-heat)
mode.

Blink: Indicates that the machine is in the process of resetting from

the energy saving mode or just after supplying the power.
(During warmup)

OFF: Indicates that resetting from the energy saving mode is com-

pleted and that the fusing temperature is in ready state.

The combinations of the above display lamps are as follows:
(

F

 = ON, 

D

 = OFF)

Lamp

Immediately after

power ON

Ready

Copying

Pre-heat lamp

Blink

D

D

Ready lamp

D

F

D

Other lamps

F

F

F

Lamp

Energy

saving mode

(Pre-heating)

Energy

saving mode

(Auto power

shut off)

Resetting

from energy

saving mode

Copy is

started during
resetting from

energy saving

mode

Pre-heat lamp

F

F

Blink

Blink

Ready lamp

F

D

F

D

Other lamps

F

D

F

F

*

2 

Maintenance lamp
When the set count number (set by the simulation) is reached,
the lamp lights up. The machine does not stop.

TD cartridge replacement required indicator
When toner density is lower than a specified level, the TONER
DEVELOPER CARTRIDGE REPLACEMENT indicator lights up
to warn the user.
If toner is not added after approximately 10 sheets are copied,
the indicator starts blinking and machine starts to supply toner.
(Toner Developer cartridge replacement indicator keeps lighting
up)
If toner density is not back to specific level after two minutes, the
READ indicator goes out and Toner Developer indicator starts
blinking, and the copier stops.

Photoconductor cartridge replacement lamp
When the copy count reaches 29,000 after installing a
Photoconductor cartridge, the lamp lights up.
When 1,000 copy is made after that, the lamp blinks instead of
lighting. The machine does not stop.
Press and hold the clear key for 5 sec in the user simulation
mode to display the remaining life of the photoconductor
cartridge in 3 digits x 2 lines on the copy quantity display.

Paper required indicator

Misfeed indicator

AR-161

AR-160/161 FM/E [4] EXTERNAL VIEWS AND INTERNAL STRUCTURES 12/1/1998

4 – 2

No.

Name

Code

Function, operation

1

Exhaust fan motor

VFM

Cools the inside of the machine.

2

Shifter motor

Shifts the paper exit tray. (AR-161)

3

Toner motor

TM

Toner supply

4

Mirror motor

MRM

Drives the optical mirror base (scanner unit).

5

Cooling fan motor

CFM

Cools the inside of the machine.

6

Main motor

MM

Drives the machine.

7

Paper feed solenoid

CPFS1

Solenoid for paper feed from cassette

8

Resist roller solenoid

RRS

Resist roller rotation control solenoid

9

Manual paper feed solenoid

MPFS

Manual paper feed solenoid

10

Manual paper transport clutch

MPTC

Drives the manual paper transport roller.

11

Manual paper feed clutch

MPFC

Drives the manual paper feed roller.

12

Paper feed clutch

CPFC1

Drives the cassette paper feed roller.

13

PS clutch

RRC

Drives the resist roller

AR-161

AR-160/161 FM/E [4] EXTERNAL VIEWS AND INTERNAL STRUCTURES 12/1/1998

4 – 3

No.

Name

Code

Function, operation

1

Mirror home position sensor

MHPS

Detects the mirror (scanner unit) home position.

2

Cassette detection switch

CSD1

Cassette detection

3

Toner density sensor

TCS

Toner quantity detection

4

Paper exit sensor (paper exit side)

POD1

Detects paper exit.

5

Right door switch

DSWR

Side door open/close detection

6

Paper full sensor

Paper exit tray section full detection <For JOB separator>

7

Lift sensor

Paper feed tray lift up detection <For JOB separator>

8

Paper exit sensor (DUP side)

POD2

Paper transport detection

9

Thermistor

Fusing section temperature detection

10

Thermostat

Fusing section abnormally high temperature detection

11

Paper transport sensor

PPD

Paper transport detection

12

Manual sensor

MPED

Manual transport detection

13

Cassette paper sensor

PED1

Cassette paper empty sensor

14

Drum reset switch

DRST

New drum detection switch

15

Power switch

MAIN SW

Turns ON/OFF the main power source.

AR-161

AR-160/161 FM/E [4] EXTERNAL VIEWS AND INTERNAL STRUCTURES 12/1/1998

4 – 4

No.

Name

Function, operation

1

Copy lamp invertor PWB

Copy lamp control

2

Power PWB

AC power input/DC power control

3

High voltage PWB

High voltage control

4

CCD sensor PWB

Image scanning

5

Main PWB (MCU)

Machine control/Image process

6

Paper exit interface PWB

Paepr exit, finishing control

7

Electronic sort function

Operation panel input/Display

8

Operation main PWB

Operation panel input/Display, operation panel section control

1

2

3

4

8

7

6

5

AR-161

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4 – 5