Mita PointSource Ai 3010, Service Manual

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3-2-37
2AR-1
Mainte-
nance Description
item No.
3. Press the start key. Scanning is performed under the selected
conditions and the result is displayed.
When scanning is performed before shading, the scan value at the
machine center should be slightly different from those at the machine
front and rear. When scanning is performed after shading, there
should be no difference between respective values. Any differences
between the values at machine front and rear indicates that scanner
problem causes the fixing unevenness.
If the displayed results indicate no shading problems, the fixing
unevenness (uneven copy density) is caused by factors other than in
the scanner section (shading or CCD).
If a black line appears, the cause may be assumed based on the
results of the scanning operation before shading: if a white line
appears, they may be assumed based on the results of the scanning
operation after shading. Note that depending on the thickness and
location of the black or white line, it may not be possible to use this
method to determine the cause. This is because the displayed values
obtained from scanning at the limit of nine points are insufficient to
provide significant information.
011 024 015
001 000 000
004 004 000
20 mm from the machine left
200 mm from the machine left
400 mm from the machine left
Machine center
100 mm from the machine
center toward machine front
100 mm from machine
center toward machine rear
Figure 3-2-6
4. Press the stop/clear key. The screen for selecting an item is dis-
played.
Completion
Press the stop/clear key. The screen for entering a maintenance item is
displayed.
U091
(cont.)