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•Detects original feed motor speed and machine error by rotation pulses.

1) A timing disc has been installed on the original feed motor shaft. Depending on

the movement of the slits on the timing disc, the clock sensor switches ON/

OFF and outputs a timing pulse.

•Detects the open/close status of the original feed cover and activates reset.

1) This sensor detects the open/close status of the original feed cover by going

OFF when the original feed cover is opened or going ON when the original

feed cover is closed. When the original feed cover is opened and closed, this

switch also activates reset for recovery from an original jam.

•Detects the open/close status of the original exit cover and activates the reset

operation.

1) This sensor detects the open/close status of the original exit cover by going

OFF when the original exit cover is opened or going ON when it is closed.

While the original exit cover is open, ADF operation is disabled.

 2) When the original exit cover is opened and closed, this switch also activates

the reset operation for recovery from an original jam.

Original feed cover open/close
detecting switch

Original feed motor timing disk

SV040

SV041

Original exit cover open/close
detecting switch

•Detects the size of original loaded in the original feed tray
1) When an original is loaded and the original guides are adjusted to fit the size of

original, the size of original is detected by the ON/OFF status of three original

size detecting sensors which are mounted on the original feed tray.

2)Original size detecting sensor (2) and (3) consist of a micro switch, where as

original size detecting sensor (1) consists of photointerruptor.

SV042

Original size
detecting sensor

(2), (3)

Original size
detecting sensor

(1)

Destination

Original size detecting
sensor (1) CN13-3
Original size detecting
sensor (1) CN13-2
Original size detecting
sensor (1) CN13-1
Original size detecting
switch (2) CN31-1
Original size detecting
switch (2) CN31-2
Original size detecting
switch (3) CN31-3
Original size detecting
switch (3) CN31-4

(1) CPU P.C.B.

(CN1)

Pin

No.

1

2

3

4

5

6

7

ON/OFF

Pin

No.

1

2

3

4

5

6

7

8

9

10

11

12

ON/OFF

(CN2)

5V

0

OFF

ON

5V

0

5V

0

OFF

ON

5V

0

OFF

ON

5V

0

5V
3.8V

5V

0

5V

0

5V

0

No detecting detecting

No detecting detecting

No detecting detecting

OFF

3V

1V

3V

1V

LED ON

OFF LED ON

5V
3.8V

Pulse signal

Destination

Original detecting
sensor  CN16-3
Original detecting
sensor  CN16-2
Original detecting
sensor  CN16-1
Paper feed motor clock
sensor  CN17-3
Paper feed motor clock
sensor  CN17-2
Paper feed motor clock
sensor CN17-1
Timing sensor
CN18-3
Timing sensor
CN18-2
Timing sensor
CN18-1
Registration roller
sensor CN19-3
Registration roller
sensor CN19-2
Registration roller
sensor CN19-1

Signal

name

VL

GND

EMP

GND

KMCLK

VL

VL

TIMS

TIMS DA

VL

REGS

REGS DA

Function

DC+5V

Ground

Original detecting
signal

Ground

Paper feed motor clock
sensor signal

DC+5V

DC+5V

Timing sensor output
singal
Timing sensor control
signal

DC+5V

Registration roller
sensor output signal
Registration roller
sensor control signal

Signal

name

GND

STL

VL

SWH1

GND

SWH2

GND

Function

Ground

Original size detecting
signal

DC +5V

Original size detecting
signal

Ground

Original size detecting
signal

Ground

Function

Transfer belt motor

signal

DC+24V

DC+24V

Pin

No.

1

2

3

4

5

6

ON/OFF

(CN3)

Destination

Original feed motor
CN21-1
Original feed motor
CN21-2
Original feed solenoid
CN35-1
Original feed solenoid
CN35-2
Original feed cover open/close
detecting switch  CN23-1
Original feed cover open/close
detecting switch   CN23-2
ADFopen/close
detecting switch  CN24-1
ADF open/close
detecting switch  CN24-2

–

Pin

No.

1

2

3

4

5

6

7

8

9

ON/OFF

(CN4)

Function

DC+24V

Ground

Destination

Connecting harness for
copier  CN34-1
Connecting harness for
copier  CN34-2

Pin

No.

1

2

ON/OFF

(CN5)

24V

0

ON

0

OFF

24V

24V

24V

0

ON

0

OFF

24V

24V

0

24V

0

24V

0

Open Close

Open Close

24V

0

Signal

name

*B

B

*A

A

Vp

Vp

Destination

Transfer belt motor
CN33-11
Transfer belt motor
CN33-7
Transfer belt motor
CN33-5
Transfer belt motor
CN33-1
Transfer belt motor
CN33-9
Transfer belt motor
CN33-3

Function

Original feed motor
drive signal

Solenoid control signal

DC+24V

Original feed cover open/
close detecting signal

DC+24V

ADFOpen/close
detecting signal

DC+24V

–

Signal

name

Vp

PGND

Signal

name

DFM1

DFM2

DFSO

Vp

FGOD

ADF Vp

AUOD

Vp

–