U412 Adjusting The Uneven Density - Kyocera TASKalfa 250ci Service Manual

2JZ/2JX/2JV/2H7-1
Maintenance
item No.
Adjusting the uneven density
U412
Description
Adjusts the uneven developing/transfer density in the drum axis direction by scanning directly the density dis-
tribution of test pattern with the scanner and adjusting LSU light quantity.
Purpose
To perform when replacing the developing, drum unit, transfer belt unit or laser scanner unit.
Method
1. Press the start key.
2. Select the item. The screen for executing is displayed.
Display
Adjust Uneven Density
ON/OFF Config
Method: [Adjust Uneven Density]
1. Select [Adjust Uneven Density].
2. Select [Default Value].
A test pattern is outputted with the initial light quantity setting.
3. Place the output test pattern as the original.
Place approximately 20 sheets of white paper on the test pattern and set them.
4. Press the start key.
The color difference data is calculated.
5. A test pattern is outputted.
A test pattern is outputted with light quantity setting lower than the first test pattern by 10%.
6. Place the output test pattern as the original.
Place approximately 20 sheets of white paper on the test pattern and set them.
7. Press the start key.
The color difference data is calculated.
8. A test pattern is outputted.
A test pattern based on uneven density correction is outputted.
9. Place the output test pattern as the original.
Place approximately 20 sheets of white paper on the test pattern and set them.
10. Press the start key.
The correction result is checked.
11. When normally completed, [COMPLETE] is displayed.
If a problem occurs during auto correction, error code is displayed.
Error codes
Codes
S01
S02
S03
S04
S05
E01
E02
E03
E04
1-3-114
Description
Description
Executing the uneven density correction
Uneven density correction ON/OFF setting
Description
Order error
Patch not detected
Original deviation in the main scanning direction
Original deviation in the auxiliary scanning direction Check the original
Original inclination error
Background blur
Color patch density error
Calculation result out of threshold value
Other error
Corrective measures
Check the original
Check the original
Check the original
Check the original
Run again
Run again
Run again from step 4
After turning the power off
and on, run again