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Adjusting Head-Up (Z-Home) Position:
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This procedure is performed after Checking Head Up procedures above are completed. This
procedure is also referred to as Head Timing.
1. Remove the left arm cover and remove the back screw from the right arm cover.
2. Remove the upper arm back cover.
•
CAUTION!! Use extreme care not to drop metallic objects, tools, or other conductive material
on the Main PCB when you have the base cover removed. If you drop such objects on the Main
PCB, it can severely damage the electronics, which will be very expensive to repair.
3. Remove the base cover.
4. Click the Head Up button in the Head Timing tab.
5. Click the Bottom Center button and then the Release Z button.
6. Pull down on the needle bar and note the Current Z Position reading in the Head Timing tab. If
it is not between 179.5 ° and 180.5 ° , loosen the two screws on the z-home ag and rotate the
ag clockwise or counterclockwise depending on the Current Z Position reading.
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NOTE: A small adjustment will change the reading substantially. Make small, incremental
adjustments.
7. Tighten the z-home ag screws.
8. Click the Lock Z button.
9. Click the Head Up button twice to reset the electronics to the newest settings.
10. Click the Bottom Center button and then the Release Z button.
11. Pull down on the needle bar and note the Current Z Position reading. If the Current Z Position
reading is between 179.5 ° and 180.5 ° , the machine is timed. If the Current Z Position reading is
still out of this range, repeat steps #4 through 11 until the Current Z Position reading is between
179.5 ° and 180.5 °.
12. When have completed the internal adjustments, install all of the covers previously removed from
the machine and tighten the hardware to The torque specications.
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