Ricoh D133 MP9002
Service Program Mode. 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.
- Enter the SP mode, select SP2902.
- Select 001 to print a test pattern for the front side, or select 002 to print a test pattern for the back side.
- Scroll then select the number of the test pattern that you want to print (see the table below).
- Press [#].
- Press Copy Window to open the copy window, then select the settings for the test print (paper size, etc.)
- Press [Start] to start the test print.
- 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) |
| 2 | Vertical Line (2-dot) |
| 3 | Horizontal Line (1-dot) |
| 4 | Horizontal Line (2-dot) |
| 5 | Independent Dot (1-dot) |
| 6 | Grid Pattern (1-dot) |
| 7 | Vertical Stripes |
| 8 | Grayscale Horizontal (16-level) |
| 9 | Grayscale Vertical )16-level) |
| 10 | Grayscale Vertical-Horizontal (16-level) |
| 11 | Cross Pattern |
| 12 | Argyle Pattern |
| 13 | Density Patch (256-level) |
| 14 | Density Patch (64-level) |
| 15 | Trimming Area |
| 16 | Bandwidth (Vertical) |
| 17 | Bandwidth (Horizontal) |
| 18 | Auto Create Vertical 1-dot Line (Main Scan) |
| 19 | Auto Create Horizontal 1-dot Line (Sub Scan) |
| 20 | Auto Create Vertical 2-dot Line (Main Scan) |
| 21 | Auto Create Horizontal 2-dot Line (Sub Scan) |
| 22 | Auto Create 1-dot Independent Dots |
| 23 | Auto Create Grid 1-dot Line |
| 24 | Auto Create Vertical Stripes |
| 25 | Auto Create Horizontal Stripes |
| 26 | Auto Create Grayscale Horizontal (20 mm) |
| 27 | Auto Create Grayscale Horizontal (40 mm) |
| 28 | Auto Create Grayscale Vertical (20 mm) |
| 29 | Auto Create Grayscale Vertical (40 mm) |
| 30 | Auto Create Argyle |