Troubleshooting

5.3.3 Fine Printhead Alignment

Print a few rotated bars and inspect the print quality. With a 1/16" (1.59 mm) hex key, turn the left and right head- adjustment screws counter-clockwise approximately 1/4 −1/2 turn until the desired print quality is achieved. Finally, turn the left head-adjustment screw 1/4 turn counter-clockwise.

5.4Adjusting Printhead Pressure and Support

The Head-Support Plate supports the outer end of the Printhead when narrow media is used. Without this support, the Printhead would bear down on the drive roller, causing diminished print quality and premature wear. The Head-Support Plate needs to be engaged only when the media width is less than 3.5" (89 mm).

The Printer's Printhead support requires adjustment if media widths of 3.5" (89 mm) or less are used. To make this adjustment complete the following steps:

1.Loosen the two mount screws that fasten the Head to the Support Plate, leaving the screw only slightly snug.

2.Load the media and engage the Printhead by rotating the Head-Lift Lever to the ‘down’ position.

3.Turn the adjustment screw clockwise until the Support Plate moves down and contact the Bearing Plate underneath.

4.Tighten the two mount screws to secure the Support Plate.

Note: The mount screws that secure the Head-Support Plate also secure the Ribbon Shield. When loosening these screws, be aware that both the plate and the shield may move.

DMX 400/430 Operator’s Manual

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