IBM 3270 Operator's Manual page 91

2. Place the PRINT PAT/ON LN/PRINT BFR switch (located
on the left side of the platen) in the PR I NT PAT position.
3. Check that the POWE R switch (located on the left side of
the front cover, below the print mechanism) is OFF.
4. Plug the power cord connector into the wall receptacle,
and connect the signal cable.
5. Turn the POWER switch ON; check that the platen turns
to the next line position and that the print head moves
across the carriage and returns to print position 1, as
indicated by the print position indicator.
6. Check that there is paper in the machine; if necessary, add
paper according to the procedure given on page 81.
7. Place the PRINTER MODE switch in the MODE 2
position. Then push and release the START PRINT slide
switch and note that the unit automatically prints a line of
H's. If the characters are weak and difficult to read, replace
the ribbon according to the procedure on page 84.
8. Place the PRINT PAT/ON LN/PRINT BFR switch in ON
LN, and close the top cover. Your printer has now been
checked and is ready for operation under program control.
If, at this time, the printer does not operate under program
control, raise the top cover and recheck the following items:
1. Check that the paper is installed correctly by rotating the
paper advance knob a few times to see that the paper
moves evenly with the platen.
2. Check that the PRINT PAT/ON LN/PRINT BFR switch is
in the ON LN position and that the POWER switch is ON.
3. Lower the top cover; make sure that it is closed tightly.
If the printer still does not function, tell your supervisor and,
if it is consistent with your organization's policy, fill out the
OPERATOR TROUBLE REPORT as described on page 92.
Printer Operation
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