166 7 Maintenance
Determining the Adjustment Values
The Color Registration Chart is used to adjust color registration. It comprises two separate
charts: Chart 1 (to perform fast scans) and Chart 2 (to perform slow scans). Use Chart 1 to
adjust the color values when performing a fast scan. The fast scan direction is vertical to the
paper feed direction. Use Chart 2 to adjust the color values when performing a slow scan.
The slow scan direction is horizontal to the paper feed direction.
The following First Scan and Slow Scan sections explain how to determine the adjustment
values for the fast scan and the slow scan using Chart 1 and Chart 2.
First Scan
On the Color Registration Chart, find the straightest line where the two black lines and the
colored line are most closely aligned for each color (Y, M, and C). If you find the straightest
line, make a note of the value (-9 to +9) indicated by the straightest line for each color.
When the value is "0" for each color, you do not need to adjust color registration.
When the value is not "0", enter a value according to the procedure described in "Entering
the Adjustment Values" (P. 167).
Slow Scan
On Chart 2 of the Color Registration Chart, find the medium line within the range of white
area for each color pattern (Y, M, and C). If you find the medium line, make a note of the
value (-9 - +9) indicated by the medium line for each color. When the value is 0 for each
color, you do not need to adjust color registration. When the value is not "0", enter a value
according to the procedure described in "Entering the Adjustment Values" (P. 167).
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