User manual

95.08.23.11.29
Color LaserWriter 12/600 PS Basics & Theory 1–15
Test Page
Pattern
Selection
This feature allows you to select one of six test page patterns based
upon which one would best confirm a print quality issue.
Test pattern selection is nonpersistent. After restart, the test page
reverts to the vertical line pattern. To select a pattern,
1 Hold down the
COLOR SELECT button and press the ENTER button
eight times. The four toner lights will flash to indicate that you are in
the test pattern selection mode.
2 Using the plus or minus buttons, advance the density gauge to illumi-
nate the LED corresponding to the desired pattern. The density gauge
will flash when the selected setting differs from the previously entered
setting. Only LEDs 4 through 9 on the density gauge correspond to
available patterns.
3 Press the
ENTER button to engage the setting. If you make no further
adjustments, the panel will exit from the test pattern selection mode in
30 seconds.
Usage Tips Each pattern will inherently reveal a different type of defect. For
example, color registration problems are revealed best by the grid
pattern, while dirty rollers are revealed by printing a solid white page.
Note : By measuring the distance between repeating print defects, you
can isolate the problem to a specific roller within the printer. See
“Roller Diameters” in Chapter 2.
M C Y Bk
COLOR
SELECT
DEFAULT ENTER
TEST
PRINT
Solid
Colors
Solid
White
GradationHorizontal
Lines
Vertical
Lines
Grid