HP Designjet 3D Service Manual page 161

E. Replace the XY motors or XY table as needed.
3. Check Z stage:
A. Clean the Z stage lead screw.
B. Bad Z stage motor and belt. Replace Z motor and belt as
needed.
C. Verify Z stage is level. Re-level as needed.
D. Verify the Z stage guide rods are not loose. Tighten as
needed.
E. Z stage may have too much play, replace the Z stage as
needed.
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