Replacing The Ribbon - IBM 3270 Operator's Manual

84
Printer Operation
Replacing the Ribbon
Figure 37. H-Pattern Printout
1. Flip the POWER ON/OFF switch to OFF.
2. Place your finger tips under the recessed front edge of
the top cover and lift upward.
3. Set the TEST PRINT PAT/ON LN/PRINT BFR switch
to TEST PRINT PAT.
4. Flip the POWE RON/OF F switch ON, and be ready to
quickly turn power OFF when the print head has moved
about halfway across the carriage. (You may have to
repeat this procedure a few times to center the print
head.)
5. Push the copy-control lever back for maximum distance
between print head and platen.
6. Raise the plastic safety shield containing
~he
print-
position indicator by pulling upward on the shield edge
near the platen. On the inside of the shield you will see a
decal showing how the ribbon is threaded around the
print head. This mechanism is shown in Figure 38, with
associated reference nu mbers.