Trainee Guide TR-L2-M2000
Level 2 Maintenance Training - M2000 Dispensing Systems 2-2-60 P/N 73-0018-00 (Revision B)
Exercise Sheet 2-8-1
Adjusting the X or Y-Axis Linear Encoder Height
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 <Ctrl>K.
 <Ctrl> means press the Control key on your computer keyboard.
 This opens the servo loops allowing the dispensing head to be moved by hand.
 You can also pop the servo by pushing on it with about 7lbs. of force.
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 down on the encoder until it is on top of the gauge. Make sure that the encoder
is level and not pinching the gauge.
 You should be able to slide the gauge back and forth 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 back and forth, or side to side, depending on the
axis being adjusted. 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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