05/2014
6-260
DC SC2020
6.4.16.4 CVT Auto Shading (Gray)
Version 1.1
General
6.4.16.4 CVT Auto Shading (Gray)
Purpose
This diagnostic function performs correction on the density dispersion that is caused by floating DADF.
• DADF Density Correction Mode (BW): Scans in BW and calculates the BW Density Coefficient.
NOTE: Auto Shading is to be performed during CE Image Quality adjustment after replacing the
DADF, Top Cover, or CIS Unit.
Procedure
1. Enter the CE Diag Mode and input 715-106 in the Chain-Link to set the Paper Type used during
Auto Shading.
2. Use the [Down arrow] button to select [CVT Auto Shading (Gray)], and press the [OK] button.
Figure 1 j0bs64157
3. Press the [OK] button.
Figure 2 j0bs64158
4. Load 1 A3 size blank sheet on the DADF and press <Start> to start the Auto Shading.
• Performs shading to stabilize the IIT state.
• Obtains the shading data.
• Performs sampling of white paper data to calculate and set the White Reference Correction
Coefficient. (Written into NVM [715-100].)
• Performs shading to reflect the result after the White Reference Adjustment.
Figure 3 j0bs64159
5. When the Auto Shading has completed, the following measured values will be displayed .
Figure 4 j0bs64160
6. Press the [<--] (Back) button to return to the [Fax/ Scanner Diag] screen.
Table 1
Chain-Link No. Value Paper Type
Default
Value
Setting
Range
715-106
IIT Paper Code
0 Use NVM Individual Paper Coeffi-
cient
00~8
1 J paper
2 P paper
3 C2 paper
4 Green100 paper
5 Digital Color Xpression
6 Color Tech+
7 Xerox4200 paper
8 Xerox Business
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