Specifications

Checking Select Position
After adjusting the movable knife home position, you must check for the movable
knife "select" position. If adjustment is required it is recommended that Melco
factory-trained personnel be consulted.
1. Replace the
standard needle plate on the embroidery head arm (See Figure
2-28). 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 rear bed cover of the embroidery head to expose the trimmer
camming area as seen in Figure 2-33.
6. With the 5 mm hex wrench at the right end of the Z drive shaft, slowly rotate
clockwise until the number of degrees indicated in the display reads between
280 and 300.
7. Refer to Figure 2-33 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 continue to apply clockwise rotation to
the Z drive shaft. Rotate the shaft at least one full revolution. Slowly rotate 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 shaft any further, place the Melco select position
fixture (p/n 995372-01) into the needle plate hole (see Figure 2-34). 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 shaft clockwise until the movable
knife just contacts the select position fixture or substitute item (see Figure 2-34).
11. Stop rotation and allow the preload of the movable knife against the fixture to
relax.
12. Check the reading of the display to be between 311 and 313 degrees.
Trimmer Option 2 - 41
110305-01, Rev A 2. Service Adjustments