Gradation Adjust - Minolta CF910 Service Manual

3-10. GRADATION ADJUST

Gradation Adjust is to be performed three times to improve correction accuracy after the
copier has been set up and each time a service job has been performed.
1. Press the following keys in this order to set the copier into the Service mode: Stop
0 0 Stop
2. Select "Gradation Adjust" from the Service mode menu.
Note
Before performing Gradation Adjust, reset the settings for "PRT Max Density", "PRT High-
light", "Background Voltage", "VB Shift" of "Image Adjust" to the standard values.
0 1.
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3. Press the Start key.
4. Place the copy fed out of the copier on the
Original Glass.
Note
Examine the display on the Touch Panel for
the direction in which the copy is to be placed
on the glass.
5. Place ten sheets of A3 paper on that copy
and lower the Original Cover.
6. Press the Start key again.
The copier scans the original. It does not
feed out a test copy at this time.
7. When the Service mode menu reappears
on the Touch Panel, select "Gradation
Adjust" again.
8. Press the Start key.
The copier feeds out a test copy at this
time.
9. Perform steps 4 through 8 a total of three
times using the latest test copy each time.
10. After the procedures have been com-
pleted, press the Panel Reset key.
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