Specifications

Page 4-34 105SL Maintenance Manual 32056L Rev. 2 12/4/01
SECTION 4 PREVENTIVE AND CORRECTIVE MAINTENANCE
6. Continue to print PAUSE Key Self Test labels and verify even printing and parallelism.
7. If parallelism is out of tolerance, perform the “Printhead Parallelism Adjustment” on
page 4-34.
8. If no other adjustment is required, tighten the two screws to lock the adjustment.
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Adjusting the printhead parallelism squares the printhead with respect to the media path.
1. Prior to starting this test, ensure the installed media is “squared” (at 90°) to the tear-off
bar. Open the printhead and move media until it is square with the tear-off bar. Close
printhead.
2. Print the PAUSE Key Self Test labels.
3. The uppermost line on the test label should be parallel to the top edge of the label,
within a tolerance of 0.020″ (0.5 mm).
4. If the print lines are not parallel with the top of the label, proceed to the printhead
parallelism adjustment. If parallelism is within tolerance, do not perform the procedure.
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The printhead parallelism adjustment corrects for printing skew. If the lines at the top of the
PAUSE Key Self Test labels are not parallel to the media, this adjustment should be
performed.
1. Refer to Figure 4-22. Loosen the four screws at the top rear of the print mechanism.
NOTES: Make very small adjustments and check the results. Adjust one screw at a
time. Turn the screw clockwise to move the printhead toward the front of
the printer. Turn the screw counterclockwise to move the printhead
toward the back of the printer.
Special tool (part # 11301) allows adjustment of the printhead location
screws while the printer is running.
2. Adjust the parallel location of the uppermost lines by turning one of the screws located
at the back of the print mechanism.
3. Adjust one side as necessary to align the uppermost line of the test label parallel with
the top edge of the label.
4. To check the results of your adjustments, run additional PAUSE Key Self Test labels
and check for proper parallelism.
5. When parallelism is achieved, tighten the four screws at the top of the printhead.
6. Run additional PAUSE Key Self Test labels to verify proper positioning.
CAUTION:
PRINTHEAD PARALLELISM ADJUSTMENT RARELY NEEDS TO BE
PERFORMED. DO NOT PERFORM THIS ADJUSTMENT UNLESS YOU
HAVE BEEN TRAINED TO DO SO. IF THE PROCEDURE IS NOT DONE
CORRECTLY, PRINT QUALITY WILL BE ADVERSELY AFFECTED.