Datamax E-Class Mark III Professional Operator's Manual page 70

Skips every other label (print quality is good, but every other label is skipped):
The label is formatted too close to the top edge of the label: Leave white space equal to 8-dot
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rows (about .02 inch [.5mm]) at the top of the label.
The media is not calibrated: Calibrate it (see Section 3.7).
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The media sensor or media sensor circuitry may be defective: Call for service.
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Unable to print rotations:
The characters are formatted outside the dimensions of the label: Check that the row/column
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values provide enough room for the height of the image being printed.
Light print on the right side of the label:
The printer's cover is not latched down: Latch it.
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The printhead is not properly aligned: Call for service.
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Printer fails to power ON:
The AC wall outlet may be faulty: Try another outlet.
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The power supply may be faulty: Replace it.
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Possible defective power switch: Call for service.
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Label advances 1-2 inches before a fault indication:
The ribbon may be incorrectly installed. Ensure that the inked side of the ribbon faces the labels.
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With most ribbons this can be verified by rubbing paper against the ribbon; the ink should smudge
the paper. Or, if using label stock, the sticky side of a label will pull off the ink.
A mismatched ribbon/paper combination is resulting in an insufficient amount of friction between
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paper and ribbon: Ensure that the correct type of ribbon is being used with the media.
Label advances 12 inches before a fault indication:
The media may not be properly loaded: Reload it (see Section 2.3). When loading media ensure
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that the media hangers and media guides are against the media and that gaps or marks in the
labels are in line with the media sensor.
The media sensor or media sensor circuitry may be defective: Call for service.
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Labels move excessively from side to side during printing:
The media may not be properly loaded: Reload it (see Section 2.3). When loading media ensure
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that the media hangers and media guides are against the media and that gaps or marks in the
labels are in line with the media sensor.
64 Chapter 6 – Troubleshooting