Ribbon Guide Alignment - Printronix P7000 Series Maintenance Manual

Chapter 4

Ribbon Guide Alignment

Ribbon Guide Alignment

1. Open the printer cover.
2. Load paper.
3. Install the ribbon. (Refer to the User's Manual .)
4. Using the Shuttle Slow diagnostic printer test (page 211), wind the ribbon
fully onto the ribbon spool on the side opposite the ribbon guide you want
to adjust. For example, to align the right ribbon guide, wind the ribbon
until the left ribbon spool is full. (You can reverse ribbon tracking by
shorting across the ribbon guide skid screws (1) with a screwdriver or
Allen wrench.)
5. Check ribbon tracking by running the Shuttle Slow diagnostic printer test.
(See page 211.)
6. On the ribbon guide to be adjusted, momentarily short between the ribbon
guide skid screws (1) to verify that the ribbon reverses.
7. Observe how the ribbon (2) passes around and across the ribbon guide. It
should be centered and not folding against the top or bottom washers (3).
8. If the ribbon is not centered, stop the Shuttle Slow test. Use a small
7/32 inch box-end/open-wrench to loosen the retaining screws (4) just
enough so that you can rotate the ribbon guide to new positions, but it will
remain in place once moved.
9. Rotate the ribbon guide as required to center the ribbon (2).
10. Tighten the retaining screws (4).
11. Allow most of the ribbon to wind onto the ribbon spool on the side you
adjusted, then repeat steps 5 through 10 for the other ribbon guide.
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