AR-651 (serv.man10). Scanning section - Sharp Copying Equipment Service Manual (repair manual). Page 13

AR-651/810  SCANNING SECTION  6 - 13

(4) Original size is determined by the combination of the presence/absence of signals which are output at

each detection point. The combination chart for size determination of A4 series and LT series are as

followed.

[A4 Series]

Size

APS-1

APS-2

APS-3

APS-4

APS-5

A3

0

0

0

0

0

A4

0

0

0

0

1

B4

0

0

0

1

0

B5

1

0

0

1

1

A4-R

0

0

1

1

0

A5

1

0

1

1

1

B5-R

0

1

1

1

0

A5-R

0

1

1

1

1

[LT Series]

Size

APS-2

APS-3

APS-4

APS-5

LD

0

0

0

0

LT

0

0

0

1

LG

0

0

1

0

LT-R

0

0

1

1

ST

1

0

1

1

ST-R

0

1

1

1

Code

Output signal

Original

1

H

Absent

0

L

Present

* When the APS operation sensor is OFF;

• The following points are determined by the output signals from APS sensors

Size (The combination of the signals satisfy the above chart)

: Size is displayed on the control panel and an appropriate paper and reproduction ratio are selected.

Size retention (The combination of the signals do not satisfy the above chart)

: Retains the latest original size recognized (or no original state) until a new paper size is recognized.

No original (output from all the sensors are “1”.)

: Reproduction ratio and paper size are not selected.

• Size change is always observed and detected.
• Carriage-1 stays at the standby position even if the reproduction ratio changes corresponding to the change of

the original size.

* When the APS operation sensor is ON;

Retains the latest original size (or no original state) recognized right before the APS operation sensor is turned
ON regardless of the state of the APS sensor output signals.