AL-840 (serv.man6). AL800 840 Service Manual-Adjustments - Sharp Copying Equipment Service Manual (repair manual). Page 3

*

1) Set the test chart with three sheets of A4 (11 

×

 8.5) paper on the

document table as shown below and close the document cover.

2) Set the copy density level of the manual copy mode and the photo

copy mode to the center.
(Select the photo mode with the copy mode key and press and
hold the key for 5 sec or more, and the auto copy mode display
lamp will blink. Under this state, use the copy density adjustment
key to set the copy density level to the center. When the copy
mode key is pressed after this, the adjusted level is set and the
copy mode display lamp will change from blinking to lighting and
the machine will return to the normal mode.)

3) Enter the test command (simulation) 46-1 mode.

4) Select the copy mode to be adjusted with the copy picture quality

mode select key.
(The currently set copy density adjustment level is displayed on
the copy quantity display.)

5) Change and adjust the set value so that the following copy density

copy is made.

To change the copy density, change the adjustment value and press
the start button.

(The adjustment value is stored and a copy is made)

To decrease the copy density, decrease the adjustment value. To
increase the copy density, increase the adjustment value. When the
exposure level of the center density level is adjusted, the copy density
in the other density level is automatically calculated and adjusted.

The adjustment value can be set in the range of 0 

∼

 99.

Perform procedures 4) 

∼

 6) for each copy mode.

(Test chart comparison table)

UKOG-0162FCZZ
DENSITY No

1

2

3

4

5

6

7

8

9

10

W

UKOG-0089CSZZ
DENSITY No

0.1

0.2

0.3

0.5

1.9

0

KODAK GRAY
SCALE

1

2

3

4

19

A

*

JOB No

Content

S 004

Scanner (reading) section cleaning

S 006

Image process section cleaning

S 007

Fusing section cleaning

*

One of the following test charts is required.

Name

Gray scale chart

Parts code/Price rank

UKOG-0162FCZZ

Name

SHARP original test chart

Parts code/Price rank

UKOG-0089FCZZ

Name

KODAK gray scale chart

Parts code/Price rank

Commercially available

Content

Preliminary 

work

After-

work

JOB No

JOB No

ADJ M2

Copy distortion
adjustment

ADJ 1 Scanner unit

parallelism
adjustment
(Mechanical
adjustment)

ADJ M2/
ADJ 2

ADJ 2 Copy sub

scanning direction
distortion
adjustment

ADJ M2/
ADJ 1

ADJ M2/
ADJ 3

ADJ 3 Copy main

scanning direction
distortion
adjustment

ADJ M2/
ADJ 2

ADJ M3

*

*

Enforcement
time

JOB No

Content

S 004

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

Cycle

—

Condition

When the copy image
distortion is outside the
allowable range.

A4(11x8.5")
White paper

Test chart

1 3 5

AUTO

ONLINE

PREHEAT

MANUAL

PHOTO

1

10

W

2

3

4

5

6

7

8

9

SHARP gray scale adjustment level

Copied

Not copied

1

10

W

2

3

4

5

6

7

8

9

7 – 3