Epson TM-FX2180 manual Bidirectional Print Alignment Bi-d Adjustment

EPSON FX-2180 Service Manual

10.If the platen gap is wider at the left end column than at the right end column, adjust the parallelism for the rear carriage guide shaft by moving the parallelism adjustment bushing backward. If the platen gap is narrower at the left end column than at the right end column, move the parallelism adjustment bushing forward. See Figure 5-4.

Chapter 5 Adjustments

12.Remove the print head from the carriage assembly.

13.Insert the ribbon mask into the ribbon mask holder. Then attach the

print head to the carriage assembly, and tighten the two CBS screws (3 × 8) to secure the print head.

14.Tighten the hexagonal nut (M4) to secure the PG adjustment lever.

5.2.2 Bidirectional Print Alignment (Bi-d) Adjustment

This section describes how to adjust the bidirectional print alignment. This adjustment is required after you remove or replace the printer mechanism. It is also necessary after you replace the main board assembly or the EEPROM, because the adjustment values are written to the EEPROM on the main board.

You can perform this adjustment using the Settings diskette, the control panel buttons and lights, or the Remote utility. This section first describes how to perform the bi-d adjustment using the Settings diskette, and then describes how to perform the adjustment from the control panel.

hexagonal nut

parallelism adjustment bushing

Figure 5-4. Adjusting the Parallelism of the Carriage Guide Shaft

11.Continue performing steps 7 through 10 until the platen gap is correct at all three positions (left end, right end, and center). After completing the adjustment, remove the screwdriver from the drilled hole in the rear carriage guide shaft.

9IMPORTANT

„When you replace the main board, reset the factory settings as described in section 5.2.3 first, and then adjust the bidirectional print alignment.

„Do not adjust the bidirectional print alignment if the input voltage is fluctuating significantly.

„Before you run GWBASIC, exit Windows and go to the DOS prompt.

„When you adjust the bidirectional print alignment, use continuous paper that is 15 inches (381 mm) wide.

„Clearing the EEPROM does not reset the bidirectional adjustment values.

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