Genicom MatrixPrinter LA36 - Manual (Page 68)

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4.9.2 Adjustment
(1) Print head gap adjustment
When replacing the carriage unit or platen, check that the gap between the print head and platen is 0.38 ± 0.03
mm at both ends of the platen. To check the gap along the platen, use a platen gap adjustment gauge and move
the carriage to the left and right. To adjust the gap, turn the two levers at the ends of the stay shaft.
Procedure
1. Turn off the printer power switch.
2. Remove the covers (Section 4.9.1(3)).
3. Set the paper thickness lever upward (narrowest).
4. Calibrate the platen gap adjustment gauge according to its instruction manual.
5. Remove the print head if it is on the carriage unit, then install the gauge instead.
6. Turn the platen and find the rotational location where the print head gap is widest.
Head gap gauge