Printhead Lift Adjustment; Ribbon Setup Adjustment; Label Tracking - Printronix T3204 Maintenance Manual

Printhead Lift Adjustment

1. Set green head level adjust knob to lowest position.
2. Insert a 0.5 inch wide strip of plastic 0.001 inch thick strip on each end
of the platen.
3. Adjust the set screw until each strip releases with equal pull when the
printhead latch closed. This procedure sets the printhead lift for proper
operation with full width, standard thickness (0.007 inch) media.

Ribbon Setup Adjustment

1. Verify that the ribbon take-up is square to the centerplate. Adjust rear
bearing plate and/or standoff if necessary.
2. The ribbon deflector on the head mount plate should start off square.
Adjust to maintain equal tension (side to side) on the supply side to the
head.
3. The ribbon deflector in front of the head should be parallel to the head
and not contact the tear bar.
4. The ribbon roller behind the upper extrusion should roll freely.
5. Print a test pattern allowing the ribbon to feed out with the paper. Verify
that no ribbon bubbling or wrinkling is evident, indicative of a concave
head.
6. Adjust head mount deflector for minimum pull marks in ribbon.

Label Tracking

The media should track with little help from the width guide. Check for
squareness of the media roller (on the "cantilever bracket" extrusion, see
page 9–8, item 21). The outer end of this roller is controlled by the
adjustment of the hinge.
Maintenance and Adjustments 4–7