AL-840 (serv.man6). AL800 840 Service Manual-Adjustments - Sharp Copying Equipment Service Manual (repair manual). Page 8

*

(Test command (set value))

Range (MIN)

0

Range (MAX)

99

Standard value

50

Default

50

(Copy resolution, main scanning direction copy magnification ratio)

Copy image position

Copy resolution

Center

5.0 line/mm

Corner

4.5 line/mm

Copy magnification ratio

display value

Actual copy magnification ratio

100%

Within 

±

 1.0% of the displayed

copy magnification ratio

*

Test command (Simulation)

MODE

Normal

MAIN CODE

48

SUB CODE

1

*

Enforcement
time

JOB No

Content

S 004

When any part in the scanner
(reading) section is
disassembled or replaced.

S 009/Ua 002

When replacing the MCU PWB
In case of U2 trouble

Cycle

—

Condition

When the main scanning
direction copy magnification
ratio and resolution are not in
the specified range.

*

1) The copy image distortion is within the specified range.

2) The copy image is free from deflection.

3) The copy image density is within the specified range.

*

1) Enter the simulation 48-1 mode.

2) Select the main scanning direction (manual) adjustment mode

with the copy picture quality mode select key.
(The currently set copy magnification ratio adjustment value is
displayed on the copy quantity display.)

Adjustment mode

Adjustment

mode (Lighting)

Note

Main
scanning 
direction 

Auto

Auto copy
mode lamp

The adjustment is made
automatically by the
software.

Manual

Manual copy
mode lamp

The adjustment is made
manually.

Sub
scanning 
direction

Manual

Photo copy
mode lamp

The adjustment is made
by changing the
scanning speed.

3) Set the adjustment value to 50 and press the start button.

(The adjustment value is stored and a copy is made at the copy
magnification ratio corresponding to the adjustment value.)
The adjustment value can be set in the range of 0 

∼

 99.

4) Turn off the power.

5) Check the CCD unit No. (OID) specified on the CCD unit.

6) Loosen the CCD unit fixing screw.

7) Set the dimension (L) from the CCD edge to the center of the hole

in the scanner (reading) unit to the value calculated from the
following formula, and fix it.

L = 10.5 + CCD unit No. (OID)

8) Place the scale on the document table as shown below, and make

a copy in the text copy mode at 100% in the proper density.

CCD No

L=10.5+CCD No(OID)

Hole

Scale

7 – 8