Datamax I-Class Mark II Operator's Manual page 74

If experiencing this problem...
Poor print quality:
Skips labels when printing:
Unable to print rotated text:
Chapter 6 – Troubleshooting
Try this solution...
The printhead may need cleaning; see Section 5.2.
Adjust the Heat and Print Speed settings through the Front
Panel or by host commands, see Section 4.5.)
The media/ribbon combination may not be compatible;
contact a Media Representative.
The Media Width Adjustment may be incorrectly adjusted;
see Section 5.3.
The Platen Roller may be dirty or worn; clean or call for
service.
Media Calibration may be needed; see Section 3.4.
The Media Sensor may be out of position; readjust the
position; see Section 2.3.
The format may be within 1/8 inch of the label's trailing
edge. Try reducing or moving the format slightly.
The characters may be formatted outside the label
dimensions. Ensure the row/column values provide enough
room for the height of the characters or bar code to be
printed. See the Programmer's Manual for details.
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