Designjet Z Series — Service Manual 1-49
Troubleshooting Print Quality Problems
should specify that you are loading a sheet to avoid print quality problems.
Starwheel Marks
Starwheel marks are caused by the pressure of the starwheels on the paper
just after the plot is printed. These are vertical, non-continuous marks that are
more visible in dark areas of the plot..
Corrective Action
1 If the printer is a Z2100/Z3100/Z3100ps, install the new Starwheel
Assembly (with Actuator). The new Starwheel Kit tilts the Starwheel Rail,
increasing the distance between the active starwheels and the paper and
reducing Starwheel marks.
The active Starwheels are located over the Starwheel Roller, and the
passive Starwheels are located inside the print path. The new Starwheel
Assembly (with Actuator) reduces active Starwheel marks, but does NOT
reduce passive Starwheel marks.
2 If the printer is a Z3200/Z3200ps or Z2100 Revision C, you can raise the
starwheels to the UP position semi-automatically. See the User´s Guide.
The new Starwheel Assembly (with Actuator) (for the Z2100/
Z3100/Z3100ps printers) can be ordered using part numbers
Q5669-67061 (24 inch) or Q6659-67016 (44 inch). For the
relevant removal and installation procedures, refer to page
6-166.
The Z3200 and Z2100 Revision C series have an automatic
starwheel that can be controlled through the printer utility
(Z3200) or the front panel (Z2100 Revision C).
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