October 2012
4-104
ColorQube 8570/8870 Service Manual
ADJ 1.2
Revised, 3rd Revision - Xerox Internal Use Only
Repairs and Adjustments
ADJ 1.2 Homing the Printhead Forward to Print Position
Purpose
To home the Head Tilt Gear and as a result, the Printhead. Two procedures are given, one for
when the Printhead is installed, and one for when the Printhead is not installed.
Printhead is Installed
Adjustment
NOTE: For additional information, refer to Homing the Printhead Forward to Print Position
video (also available in the ColorQube 8570/8870 Training materials).
1. Remove the Drum Maintenance Unit (REP 1.16) (optional or if possible).
2. Use a small screwdriver to rotate the X-Axis Shaft with the Printhead centered over the
Drum to clear the Left and Right Printhead Restraints.
3. Rotate the Drum Maintenance Camshaft 360° clockwise using a flat blade screwdriver as
shown in Figure 1. If the Head Tilt Gear is engaged, manually assist the movement of the
Printhead. There is an audible click when the Head Tilt Gear disengages from its drive
train.
Figure 1 Rotating the Drum Maintenance Shaft
4. Disengagement of the Head Tilt Gear is shown in Figure 2.
NOTE: If the latch is accidentally engaged (upward), rotate the gear CCW to disengage it.
Figure 2 Head Tilt Gear Indicator
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