Designjet Z Series — Service Manual 1-50
Troubleshooting Print Quality Problems
3 For the Z2100 (revision a or b)/Z3100/Z3100ps printers, activate the UP
position of the new Starwheel Assembly (with Actuator) on the left side. Slide
the left actuator away from the Starwheel Assembly (the UP position).
4 Activate the UP position of the new Starwheel Assembly (with Actuator) on
the right side. Slide the right actuator away from the Starwheel Assembly
(the UP position).
Dark Ink Marks on the Media due to cockle
They appear when the media advance is not properly controlled and so the
carriage interferes with it (cockle). These marks can appear at the edges of
the media (in the beginning of the plot) or at any other position in the plot.
Corrective Action
1 If the starwheel position has been set to HIGH with the printer utility, set the
starwheel position to DOWN again (use the actuators for the Z2100/
Z3100/Z3100ps, the Printer Utility for the Z3200, or the front panel for
Z2100 Revision C). Although starwheel marks will be more visible, it should
fix the “dark ink marks on the media” problem.
2 If using a roll that is close to its end, it could be that there is to much curling
and it is not being well controlled by the Starwheels. A recommendation in
this case would be setting the starwheel position to the DOWN position (use
the actuators for the Z2100/Z3100/Z3100ps, the Printer Utility for the
Z3200, or the front panel for Z2100 Revision C) and trying to remove curling
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