Specifications

Checking Select Position
After adjusting the movable knife home position, you must check for the movable
knife "select" position.
1. Replace the
standard needle plate on the embroidery head arm (See Figure 4-8).
Do not install the raised needle plate used with cap frames.
2. Turn the machine power ON.
3. Go to the HEAD TIMING MENU and press to turn HEAD TIMING ON.
4. Press the and keys simultaneously to go into the "Z pos" mode. On the display
you will see: ’Z pos’ followed with a numerical indication in degrees.
WARNING! Potential danger exists any time you perform service
around a rotating belt. Please use caution during the following
steps.
5. Remove the Z motor cover from the rear of the head.
6. Refer to Figure 4-16 and slowly rotate the Z drive pulley/belt clockwise (as shown
by the arrow in the figure) until the number of degrees indicated in the display
reads between 280 and 300.
7. Refer to Figure 4-14 and manually engage the trimmer solenoid pin into the
trimmer cam groove by pushing the protruded end of the pin inward with a flat
bladed screw driver.
8. Hold the trimmer solenoid pin in as you apply clockwise rotation to the Z drive
pulley/belt. Slowly rotate the pulley/belt until the entire camming apparatus
begins to move forward. Typically, this will read somewhere in the range of 301
to 303 on the numerical display.
9. Before rotating the Z drive pulley/belt any further, place the Melco select position
fixture (p/n 995372-01) into the needle plate hole (see Figure 4-15). If you do
not have the fixture, you may use one of several substitute items (such as a 1.5
mm bent hex wrench or the butt of a needle).
10. Now continue to slowly rotate the Z drive pulley/belt clockwise until the movable
knife just contacts the select position fixture or substitute item (see Figure 4-15).
11. Stop rotation and allow the preload of the movable knife against the fixture to
relax.
Checking Select Position 4 - 21
110291-01, Rev D 4. Trimmer Maintenance