Read Sharp MX-6580N / MX-7580N (serv.man3) Service Manual online
MX-7580N ADJUSTMENTS AND SETTINGS 5 – 74
(2) Adjustment procedures
1)
Set the scanner adjustment chart face-down in the DSPF
paper feed tray.
paper feed tray.
If the scanner adjustment chart is not available, execute SIM
63-5 to set the CCD gamma to the default. In this case, how-
ever, the adjustment accuracy is lower when compared with
the adjustment method using the scanner adjustment chart.
63-5 to set the CCD gamma to the default. In this case, how-
ever, the adjustment accuracy is lower when compared with
the adjustment method using the scanner adjustment chart.
2)
Enter the SIM 63-3 mode.
3)
When a color key is selected, the adjustment value of the
selected color is displayed.
selected color is displayed.
* When [B] (Blue), [G] (Green), or [R] (Red) key is selected,
the selected key is highlighted and the adjustment value of
the selected color is displayed.
the selected color is displayed.
* Only one color key can be selected, and the selected key is
highlighted. In the initial state, [B] is selected.
* If there is a page over [UP], an active display is shown and
the page moves up. If there is no page upward, the display
grays out and the operation is invalid.
grays out and the operation is invalid.
If there is a page under [DOWN], an active display is shown
and the page moves down. If there is no page downward,
the display grays out and the operation is invalid.
and the page moves down. If there is no page downward,
the display grays out and the operation is invalid.
4)
When [DSPF] key is pressed, it is highlighted, and the color
automatic adjustment execution screen is displayed.
automatic adjustment execution screen is displayed.
5)
Press [EXECUTE] key and it is highlighted and the color auto
adjustment is executed.
adjustment is executed.
* When [EXECUTE] key is pressed during the automatic
adjustment, the automatic adjustment is interrupted.
6)
After normal completion, the result of calculation is displayed
in the initial screen.
in the initial screen.
* When an error occurs in execution, the following screen is dis-
played.
* When an error occurs in the automatic adjustment, all the error
patch numbers are displayed.
When [RESULT] key is pressed, the display returns to the initial
screen. (The previous value is displayed)
screen. (The previous value is displayed)
* When the operation is completed normally, "COMPLETE" is dis-
played. When [RESULT] key is pressed, the display returns to
the initial screen. (The calculation result of normal completion is
displayed.)
the initial screen. (The calculation result of normal completion is
displayed.)
ADJ 19
DSPF back surface color
balance exposure adjustment
(Manual adjustment)
balance exposure adjustment
(Manual adjustment)
This adjustment is to manually adjust the color balance of R, G, and
B on the DSPF back surface in the following cases:
B on the DSPF back surface in the following cases:
• There is a difference in hue between the front surface and the
back surface of a duplex copy (scan) after executing SIM63-03
(automatic adjustment of the scanner and the DSPF color bal-
ance and color coefficient).
(automatic adjustment of the scanner and the DSPF color bal-
ance and color coefficient).
• The color balance is requested to be changed (customized) by
the user.
1)
Place the servicing color test chart (UKOG-0326FCZZ/Z1) on
the document table (OC), and press START key twice in the
Text/Print Photo mode to make a 2-sided copy.
the document table (OC), and press START key twice in the
Text/Print Photo mode to make a 2-sided copy.
2)
Use the 2-sided copy made in procedure 1) as an original to
make a 2-sided copy in the Text/Print mode with the DSPF.
make a 2-sided copy in the Text/Print mode with the DSPF.
3)
Check the tint of the front and the back surfaces.
If there is any difference, execute procedures 4) and later.
4)
Referring to the color sample below, check the hue on the back
surface to confirm which color is shifted from that on the front
surface.
surface to confirm which color is shifted from that on the front
surface.
5)
Enter the SIM 46-9 mode.
For the color (R, G, B) which is shifted, the value is adjusted.
6)
Select "DSPF" and select the color (G:R / H:G / I:B) to be
adjusted with the scroll key.
adjusted with the scroll key.
7)
Enter the adjustment value with 10-key and press [OK] key.
The adjustment value can be set in the range of (1 - 99).
All the initial values are set to 50.
All the initial values are set to 50.
To increase the color density, increase the adjustment value.
To decrease, decrease the adjustment value.
To decrease, decrease the adjustment value.
8)
Make a duplex copy of UKOG-0326FCZZ/Z1) and a user doc-
ument, as needed, in the Text/Print mode with the DSPF, and
check the adjustment result.
ument, as needed, in the Text/Print mode with the DSPF, and
check the adjustment result.
Repeat procedures 3) - 8) until the difference in hue between
the front surface and the back surface is eliminated or until the
user satisfaction is obtained.
the front surface and the back surface is eliminated or until the
user satisfaction is obtained.
[Supplement] Since the read value varies according to the docu-
ment type, thickness, and other conditions, perform the adjustment
by using the user document if necessary.
ment type, thickness, and other conditions, perform the adjustment
by using the user document if necessary.
When R is increased, red is emphasized.
When R is decreased, cyan is emphasized.
When G is increased, green is emphasized.
When G is decreased, magenta is emphasized.
When B is increased, blue is emphasized.
When B is decreased, yellow is emphasized.
R
G
B
Adjustment value
Low
High
50
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