Specifications

9. Insert the encoder shaft into the shaft coupling.
10. Tighten the jam nut, and then snug the coupling socket head cap screws onto
the encoder shaft.
11. Orient the connector on the encoder cable so the outside black wire is to the
right and will plug into pin 1 of the new encoder (see Figure 3-8). Push the
encoder cable connector onto the new encoder.
CAUTION! If the Z shaft encoder is replaced, DO NOT OPERATE THE
EMBROIDERY PERIPHERAL until the new Z shaft encoder is properly
calibrated!
12. Calibrate the Z encoder per the following procedure.
Calibration
CAUTION! Failure to properly calibrate the Z shaft encoder after
replacing it, may cause damage when attempting to operate the
machine.
Note: This procedure requires the use of a special service tool: the Melco 10 needle
headup fixture (p/n 995673-01).
1. Install the Z shaft encoder as previously described.
Note: To perform this procedure, it is important that the peripheral does
not "download." To insure this condition remove the network cable (or
boot disk if the disk drive option is installed).
2. With the network cable removed (or boot disk not inserted into a disk drive
option), turn ON the embroidery peripheral.
3. Locate the green LED marked "ZINDEX" on the front of the right frame leg of
the peripheral. Or with the card cage cover removed, locate the innermost LED
on the top of the CPU. Most
likely this LED will not be
glowing. It is only supposed to
glow for a 1 degree duration
each revolution of the Z shaft
encoder.
4. Position the Melco 10 needle
headup fixture (p/n 995673-01)
into the headup alignment hole
in the top of head #1, just in
front of the thread tree (see
Figure 3-9).
headup alignment
pin tool
Figure 3 - 9
3 - 10 Z Shaft Encoder
EMT 10/4T Technical Manual Melco Embroidery Systems