Ipu Front/Back Test Patterns: Sp2902-001,002 - Ricoh B064 SERIES Service Manual

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
scanned 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 on the next page).
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.
NOTE: Patterns 6, 8, 9, and 11 are the best choices for testing and confirming
the operation of the IPU.
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CÓPIA NÃO CONTROLADA
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CÓPIA NÃO CONTROLADA
TEST PATTERN PRINTING
B064 Series/B140 Series
/B246 Series/D052 Series