Minolta CF2002 Service Manual page 174

Item
To produce an 8-color solid
pattern.
8 Color Solid
Used for checking color


Pattern
reproducibility and
uneven density of each
color.
To produce an LPH pattern.
Used for LPH chip-to-


LPH Pattern
chip correction
Gradation Adjust
Purpose
To correct gradation reproduc-
tion after the setup procedure
has been completed or when
color reproducibility is poor.
The "Adj. Value" for "Max" and


"Highlight" shown on the Gra-
dation Adjust screen repre-
sents the degree of correction
made to produce an output of
an ideal image and "Conv.
Value" represents the differ-
ence from an ideal image
density.
The image is more ideal when


the "Conv. Value" is closer to
0.
Purpose
• Select SINGLE (single copy) or MULTI
(multi copy).
• . Select FEET or HYPER.
• . Select Gradation or Resolution.
• . Type the density level (0 to 255).
• Select SINGLE (single copy) or MULTI
(multi copy).
• Select FEET or HYPER.
• Select Gradation or Resolution.
• Select to turn ON or OFF the Border Line.
• Press the Start key, which will let the copier produce a
test pattern. Now. place the test pattern on the Origi-
nal Glass.
• Place ten blank sheets of A3 or 11" × 17" paper on the
test pattern, lower the Original Cover, and press the
Start key.
• The copier then starts scanning the test pattern. On
completing the scanning sequence, the copier displays
the results of Gradation Adjust.
• Repeat these steps two more times to let the copier
carry out Gradation Adjust sequences a total of three
times.
• Select Gradation Adjust and check the data for "Conv.
Value."
• Complete the adjustments if the values for "Max" fall
within the range of 0 +/-100 and for "Highlight" within
the range of 0 +/-60. If values fall outside the ranges,
carry out Gradation Adjust once again.
• If a total of four Gradation Adjust sequences do not
bring the values into the specified ranges, check the
image.
• If the image is faulty, perform troubleshooting proce-
dures for image problems.
S-41
Setting/Precautions
Setting/Precautions