Overview Of Steps - InfoPrint 4247 Z03 Maintenance Information

v Verify that the print head is setting squarely against both mount blocks in the carriage by loosening the two
(hex) mounting screws, pressing the print head toward the platen and retightening the screws.

Overview of Steps

1. Find the minimum gap (Gap A) that will ensure reliable paper feeding. A smaller gap can pinch the paper and
cause jams.
2. Find the maximum gap (Gap B) that will still ensure good print quality (character darkness). A larger gap will
result in degraded print quality (darkness).
3. Determine the gap (Wheel position) that produces dark print and will ensure reliable paper feeding.
4. Calibrate AFTA using T&D10 and single-part forms to the Wheel position determined above.
5. Reposition the Wheel to indicate '1' as needed.
Step 1. Find the minimum gap (Gap A) for reliable paper feeding.
a. Power off and remove the paper bail and ribbon.
b. Advance the platen by rotating the upper feed roller shaft until the WHITE dot on the left end of the
platen shaft is aligned with the WHITE mark on the shaft bearing.
c. Rotate the AFTA Wheel to the full open gap position. Move the print head carriage to the WHITE
mark on the lower mylar assembly, or to the AFTA position near the left end of the platen if no mark is
present.
Note: The AFTA position nominally corresponds to to print position 10.
d. Slide 1-part paper (nominal 20 lb. (80 gram/m
to a very small gap. The paper should be pinched by the carriage and will NOT slide when pulled
backwards.
e. As you continue to pull on the paper, begin to rotate the Wheel in small increments to open the gap.
Note the Wheel position where you can begin to pull the paper backwards with a friction that remains
constant as you continue to open the gap. This gap is where the paper is released from the carriage
assembly pinch and begins to slide freely.
f. Close the gap again and repeat this a few times until you agree on the Wheel position number where
paper beings to slide with constant friction. The constant friction is from the Lower Mylar assembly.
g. This Wheel position number is the minimum carriage to platen gap required for 1-part Paper Sliding.
Determine the minimum gap for reliable paper feeding by adding 0.5 to this Paper Sliding AFTA
Wheel position number.
2
) up past the carriage. Rotate the AFTA Wheel closed,
Chapter 5. Removals, service checks and adjustments
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