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Section 8: Adjustment Procedures
M84Pro Service Manual PN: 9001111A Page 8-3
1 Remove ribbon as applicable to gain access to the top side of print head (1, Figure 8-2).
2 Loosen thumbscrew (2) and two set screws (3).
3 Load printer with media and ribbon as applicable and latch (4) print head (1) closed.
4 Begin continuous printing of self-test labels.
5 Adjust left or right screw/s (5) to manipulate print head (1) as deemed necessary until the
print image is deemed acceptable.
6 Retighten two set screws (3) and thumbscrew (2) to complete the adjustment process.
PRINT HEAD BALANCE ADJUSTMENT
Print quality may be further optimized by the adjustment of the print head balance. When the print
head is balanced, there is equal pressure applied across the print media and platen roller by the
print head. The left side of the print head remains fixed and the right side is adjusted vertically to
obtain balance. To adjust print head balance, follow the instructions below.
1 Visually inspect the condition of the feed and platen rollers and replace as necessary.
2 Adjust the feed roller in accordance with its relative procedure in this manual.
3 Load printer with media and ribbon as applicable.
NOTE: Figure 10-3 in the Diagrams & Schematics section provides guidance
on ribbon removal.
NOTE: Figures 10-2 and 10-3 of the Diagrams & Schematics section
provides guidance on media and ribbon installation.
NOTE: The self-test label identifies if any elements are malfunctional. To the
far right of the Head Check row, OK will be printed if elements are not missing
and NG if any are missing. Begin a troubleshooting process should difficulties
be found. It is recommended that the troubleshooting process begin at the
rear of the printer and work forward.
NOTE: The print speed and darkness should be set so as to assist in
determining if the print image is being improved during alignment. The speed
and darkness settings are identified on the self-test label. Adjust as deemed
necessary.
NOTE: The self-test label provides a scale in the lower right and left corners
to assist in adjustment. The label is properly aligned perpendicular to the
print head when the scale increments are proportionate on each side.