Test Pattern Printing
SM 5-11 D062/D063/D065/D066
System
Maintenance
5.3.2 IPU FRONT/BACK TEST PATTERNS: SP2902-001,002
Front side pattern (SP2902-001). Generated by the IPU in place of data scanned from
the front side of an original (CCD→SBU). Generated in the scanner image correction
circuit.
Back side pattern. (SP2902-002. Generated by the IPU in place of data scanner from
the back side of an original (CIS→SBU). Generated in the scanner image correction
circuit.
The IPU test patterns are primarily used for design purposes. However, they can be used
as follows:
To confirm that the IPU is processing images correctly.
To fine tune the image processing parameters
To help trace the causes of poor images. For example, if the IPU test patterns are
normal when the machine is producing poor quality images, then the problem must be
after the IPU.
1. Enter the SP mode, select SP2902.
2. Select 001 to print a test pattern for the front side, or select 002 to print a test pattern
for the back side.
3. Scroll then select the number of the test pattern that you want to print (see the table
below).
4. Press
.
5. Press Copy Window to open the copy window, then select the settings for the test print
(paper size, etc.)
6. Press Start
to start the test print.
7. Press SP Mode (highlighted) to return to the SP mode display.
Patterns 6, 8, 9, and 11 are the best choices for testing and confirming the
operation of the IPU.
Test Pattern Table
These patterns can be selected for both SP2902-001 and 002.
No. Test Pattern
0 None
1 Vertical Line (1-dot)
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