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MX-6070N MX-5070N/6070N/5050N/6050N (MAIN UNIT) 1 – 7
3. Image quality check
A. Execution items
Execute the following items.
When there are defects in a picture by the contents mentioned above,
you carry out the following contents, and confirm a picture.
you carry out the following contents, and confirm a picture.
B. Description
(1)
Print engine image distortion adjustment (Manual
adjustment) / OPC drum phase adjustment
(Automatic adjustment) / Color registration
adjustment (Automatic adjustment)
adjustment) / OPC drum phase adjustment
(Automatic adjustment) / Color registration
adjustment (Automatic adjustment)
This adjustment performs the print engine image distortion adjustment,
the OPC drum phase adjustment, and the color registration adjust-
ment simultaneously.
the OPC drum phase adjustment, and the color registration adjust-
ment simultaneously.
1)
Enter SIM50-22 mode.
2)
Press [EXECUTE] key.
[EXECUTE] key is highlighted and the image registration auto-
matic adjustment is started. (It takes about 30 sec to complete the
adjustment.)
matic adjustment is started. (It takes about 30 sec to complete the
adjustment.)
3)
When the adjustment is completed, [EXECUTE] key returns to the
normal display, and the value of the adjustment result is dis-
played.
normal display, and the value of the adjustment result is dis-
played.
The current skew level for each color is displayed on the SKEW
display section.
display section.
4)
Write down the displayed skew level.
(Meaning of the skew level value and the adjustment procedure)
(Meaning of the skew level value and the adjustment procedure)
* If "OK" is displayed for all items of SKEW C,
M, and Y, there is no need to perform the adjustment.
* When "R" is displayed at the head of the value, turn the LSU
skew adjustment screw clockwise.
* When "L" is displayed at the head of the value, turn the LSU
skew adjustment screw counterclockwise.
* The turning amount of the adjustment screw corresponds to
each adjustment value. C, M, and Y indicate numbers of clicks.
The display value is rounded at the decimal point.
* "C, M, and Y(SKEW)" shows the number of adjustment click
steps for each adjustment screw of C, M, and Y.
steps for each adjustment screw of C, M, and Y.
Contents in ( )
MIAN, SUB: Difference from the previous adjustment value of
image registration.
image registration.
Example:
If 105 for this time and 103 for the previous time,
it is displayed as 105.0 (+2.0).
it is displayed as 105.0 (+2.0).
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.
and Y (SKEW) are OK.
If any of them is NG, turn the LSU skew adjustment screw of the
corresponding color to adjust.
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.
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.
(2)
Copy color balance and density check
Method
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.
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
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.
(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).
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).
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).
mode must be set to the default (center).
No.
Item
SIM
1
Print engine image distortion adjustment (Manual
adjustment) / OPC drum phase adjustment
(Automatic adjustment) / Color registration adjustment
(Automatic adjustment)
adjustment) / OPC drum phase adjustment
(Automatic adjustment) / Color registration adjustment
(Automatic adjustment)
50-22
2
Copy color balance and density check
3
Printer color balance/density check
64-5
No.
Item
SIM
4
Copy/Printer color balance adjustment (Automatic
adjustment)
adjustment)
46-74
5
Print/scan image off-center, lead edge position
adjustment
adjustment
50-10
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