Specifications

Inspection
This procedure is a guide for determining the condition of the
encoder.
Inspect the Z shaft encoder following the steps below. If the
requirements of this process are not met, replace the encoder
by following the Shaft Encoder Installation procedure.
1. Switch the peripheral OFF, lower the table top, and remove
the rear head cover.
2. When switched back on it is important that the computer
not down load a design to the peripheral. To insure this
condition remove the network cable (or boot disk if used).
3. With the network cable removed (or boot disk not inserted
into the disk drive), turn ON the embroidery peripheral.
4. Locate the green LED marked "ZINDEX" on the front of the
right frame leg of the peripheral (see Figure 3-7).
5. Rotate the embroidery head manually in a clockwise direction
(when viewing from the rear of the machine). This rotation
can be performed by rotating the Z drive shaft clockwise
with the 5 mm hex wrench at the right end of the shaft
(see Figure 3-5).
6. While slowly rotating the heads, check that the green LED
on the front or the innermost LED on the CPU blinks once
each revolution (this is the "index" or "headup" mark).
7. If there is no evidence of the LED blinking, inspect the
electrical connectors (encoder cable plug and encoder
body) for loose wires, loose fits, and any visual damage to
the encoder cabling or coupler. Clean connections and/or
replace components as necessary.
8. Rotate the head again to check for the blinking LED. If the
"test" repeatedly fails refer to the following installation
procedure for a new Z shaft encoder.
Installation
The Melco EMT 10/4T Embroidery Peripheral uses a shaft
encoder on the end of the Z drive shaft to the left of
embroidery head #4. It’s function is to provide the information
required by the CPU.
Green LED
marked ZINDEX
Figure 3 - 7
3 - 8 Z Shaft Encoder
EMT 10/4T Technical Manual Melco Embroidery Systems