Bidirectional Print Alignment (Bi-D) Adjustment - Epson TM-FX2180 Service Manual

EPSON FX-2180 Service Manual
If the platen gap is wider at the left end column than at the right end
10.
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.
Figure 5-4. Adjusting the Parallelism of the Carriage Guide Shaft
Continue performing steps 7 through 10 until the platen gap is correct
11.
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.
hexagonal nut
parallelism adjustment bushing
Remove the print head from the carriage assembly.
12.
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.
Tighten the hexagonal nut (M4) to secure the PG adjustment lever.
14.

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.
IMPORTANT „ 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.
Chapter 5 Adjustments
5-4