Epson C40UX service manual Bi-D, Choose the Bi-d adjustment

Stylus C40UX/C40SX/C20UX/C20SX Revision A

5.1.6 Bi-D

You perform this adjustment to correct differences in printing positions, which is caused by incorrect of printing timing in right and left directions during the Bi- directional printing. Therefore, you are required to perform this adjustment after performing the following operations.

„Replacing the Print mechanism

„Replacing the main board

„Replacing the CR motor

„Replacing the Printhead

1.Choose the “Bi-D” in the “Adjustment menu” as following figure.

Figure 5-10. Choose the Bi-d adjustment

2.Choose the “Print the Bi-d adjustment pattern” in the “Bi-Directional Adjustment pattern” and click the “OK” button.

Figure 5-11. Bi-d adjustment pattern

NOTE: As shown in the sample, gaps between passes are sometimes created in different directions among patterns. This unexpected change in direction is caused by an ink jet printer-specific reason, which is an ink jet printer inevitably performs a periodical cleaning specified by the flashing timer even during Bi-D pattern printing, so that the printing direction suddenly changes. However, this directional difference among Bi-D patterns should not be considered, and you can always confirm and adjust the pattern correctly by referring to gap amount only.

3.Click the “Previous” and go back to the “BI-Directional Adjustment” menu. And choose the “Adjust” menu and click the “OK” button.

4.Check the printed pattern and find the misaligned dot type. Choose the misaligned dot size in the following menu and click the “OK” button.

Figure 5-12. Choose the misaligned dot size

Adjustment Overview 82