Trainee Guide TR-L2-M2000
Level 2 Maintenance Training - M2000 Dispensing Systems 2-2-62 P/N 73-0018-00 (Revision B)
Exercise Sheet 2-8-2
Adjusting the Z-Axis Linear Encoder
Tools and Materials Needed:
 0.8-mm gauge (included with linear encoder)
 3-mm hex key
 Loctite thread locker 242
1. In the Main Window, click on Tools.
2. In the Tools Window, click on Terminal.
3. Click on Dispenser.
4. In the Terminal Mode Window, type the following command exactly as it appears:
M214=1
 This enables the amplifiers allowing the dispensing head to be moved by hand.
5. Place the 0.8-mm gauge underneath the linear encoder.
6. To adjust the height of the linear encoder, use the 3-mm hex key to loosen the hex bolts
on the encoder bracket.
7. Apply some Loctite thread locker to the hex bolt threads.
8. Press the encoder against the gauge. Make sure that the encoder is level and not
pinching the gauge.
 You should be able to slide the gauge up and down beneath the encoder.
9. Use the 3-mm hex key to tighten the hex bolts and secure the encoder in place.
10. Remove the gauge from beneath the encoder.
11. Manually move the dispensing head up and down and make sure that the encoder LED
remains green when in motion.
 If the LED turns red or orange when the axis is in motion, repeat Steps 5–10 and
adjust the encoder height again.
 If you notice that the LED turns red or orange in a specific location, use a soft cloth
and mild cleanser to clean that location on the encoder strip. If the problem is not
resolved, repeat Steps 5–10 and adjust the encoder height again.
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