MX-2630. Install Manual - Sharp Copying Equipment Service Manual (repair manual). Page 16

MX-2630N  2 – 8

SKEW: Judgment of the LSU skew adjustment result. OK or NG.

PHASE: OPC drum phase adjustment value of the previous time

5)

The procedures 2) to 4) again, and check to confirm that C, M,
and Y (SKEW) are OK.

If any of them is NG, turn the LSU skew adjustment screw of the
corresponding color to adjust.

When the adjustment is made by turning the LSU skew adjustment
screw of K, the states of C, M and Y (SKEW) are changed. Execute
SIM50-22 to check to confirm that C, M, and Y (SKEW) are OK.

When an abnormality occurs, "ERROR" is displayed.

In this case, check each drive section and the process section.

Make a copy of the gray test chart (UKOG-0162FCZZ) and a copy of
the servicing color test chart (UKOG-0326FCZZ/UKOG-0326FC11),
and check that they are proper.

a. Note for execution of the color balance and density check in the
color copy mode

To check the copy color balance and density, use the gray test chart
(UKOG-0162FCZZ) and the servicing color test chart (UKOG-
0326FCZZ/UKOG-0326FC11). Set the copy density level to "3" in
the Text/Printed Photo mode (Manual), and make a copy.

At that time, all the color balance adjustments in the user adjustment
mode must be set to the default (center).

In addition, be sure to use the specified paper for color.

b. Note for checking the monochrome copy mode density

To check the density, use the gray test chart (UKOG-0162FCZZ).
Set the copy density level to "Manual 3" in the Text/Printed Photo
mode (Manual).

In addition, all the color balance adjustments in the user adjustment
mode must be set to the default (center).

[Check with the gray test chart (UKOG-0162FCZZ)]

In the copy density check with the gray test chart, check to insure the
following conditions.

For the color (gray) balance, use the servicing color test chart (UKOG-
0326FCZZ/UKOG-0326FC11) to check.

[Check with the servicing color test chart (UKOG-0326FCZZ/UKOG-
0326FC11)]

In the copy color balance check with the servicing color test chart,
check to insure the following conditions.

1

2

3

4

5

6

7

8

9

10

W

SHARP   GRAY CHART

SHARP gray chart

Patch 1 is
slightly copied.

Patch 2 is copied.

(Color copy)

1

2

3

4

5

6

7

8

9

10

W

SHARP   GRAY CHART

SHARP gray chart

Patch 1 is not copied.

Patch 2 is
slightly copied.

Patch 3 is copied.

(Black-and-white copy)

Serviceman chart (Color patch section)

The densities of patches 1 - 6 of
each color are properly balanced.

Patch 7 is slightly
copied or not copied.

(Color copy)