Specifications

1. Remove the #4, and then the #5 rear covers.
2. With the 5 mm hex wrench, rotate the Z drive shaft to the HU position on the
disk at the right end of the Z drive shaft (see Figure 2-13).
3. Turn ON the peripheral and ensure the Z encoder is at the headup position with
the Z drive shaft at HU. (The third LED on the CPU should come ON within +/- 3
degrees of rotation around the HU mechanical position of the Z drive shaft.)
4. Perform the Z Shaft Encoder Calibration procedure in this section of the manual
if the previous step is not met.
5. When the Z drive shaft and Z shaft encoder are set at the HU position, check that
head #4 is set to the mechanical headup position by installing the headup
fixture as described in the Z Shaft Encoder Calibration procedure.
Head #4 must be at its mechanical headup position when the Z drive shaft is at HU
and the Z shaft encoder is indicating the headup signal (third LED on CPU).
6. To adjust head #4 to its mechanical headup position, you must have the #5 rear
cover removed. For all other heads, you must remove the shroud over the Z
drive shaft section just to the right of the head as you would view it from the
rear.
NOTE: It remains IMPORTANT to insure that the Z drive shaft stays at the HU
position during this procedure.
Head Timing
Disk at the
right end of
the Z Shaft
Socket Head
Cap Screw
for 5 mm hex
wrench
disk position
indicator
Figure 2 - 13
2 - 14 Head Section
EMC 10/4 Technical Manual Melco Embroidery Systems