Oce 3121 Technical & Service Manual page 98

Press ' * ' twice
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The Service Mode Menu screen will be displayed.
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Press ' FUNCTION ' (' * 4 * ') . It will highlight.
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Then, press 'OK'.
Press the Page key
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Execute ' automatic correction of shading '.
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At the end of ' automatic correction of shading ', press once on ' RESET '.
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With the RDF raised, or the platen cover open, make two totally black copies.
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2) Check that '$' is displayed on the LCD. Then, press ' * ' once.
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Press ' FUNCTION ' ( * 4 * ), causing it to highlight.
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Then, press ' OK '.
Press the Page key
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screen).
Select either 'MULTI', 'CASSETTE 1', or 'CASSETTE 2'. (Press the appro-
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priate item to select so that the cursor (
Make a PD pattern copy. Press ' PD PRINT '. It will highlight. Press the copy
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button.
The pattern copy will be used later.
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Place five to ten sheets of blank paper on the platen. Close the RDF or the cov-
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er.
ed.1
to bring up the shading screen (3rd screen).
to bring up the PD Density Auto Correction screen (4th
) points to the item.
Image quality 25