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Electronic Theatre Controls Inc

Encoder Replacement on Eos Ti Enhanced

For information on the differences between Eos Ti and Eos Ti Enhanced see What is the Difference Between Eos Ti Enhanced and Original Eos Ti 


 Jarod Eos Ti Enhanced.png

Tools & parts you will need

Large coin or flat head screwdriver

#1 screw driver

Crescent wrench

4300A2002 Haptic Encoder Assembly


Getting started

To open the unit, use a coin or large flat screwdriver to turn the locks located on the underside of the front control panel.

Jarod Opening Ti.png

Now you should be able to lift the face panel up.  Use the #1 screw driver to remove the 4 screws that hold the encoder to the face panel. Once these screws are removed, the motor can be pulled from of the encoder; there is no set screw that needs to be loosened.

Jarod Encoder 4 Screws.pngJarod Encoder Plate Removed.png

Before you continue, turn on the console being careful not to let the encoder short to anything.  Go to the facepanel test in the maintenance tab of the Eos shell, and check that you still have a failure of the encoder by rotating and pressing the shaft directly (without the wheel).  If not, you may have a rough washer or stuck button in the wheel.

Also, check that all the wires in the encoder harness are well seated and not pulling out.  They are sometimes loose and can be fixed by simply removing the connector and reseating the wire.

If you still have a failure, shut down the console and continue...

Remove the cable to the encoder by pressing on the plastic locking tab and pulling.

Jarod Enhanced Encoders.png


Now use the crescent wrench to remove the nut that holds the encoder to the metal bracket.

Jarod Encoder Shaft.pngJarod Encoder Washer.png

Follow the steps backwards to install the new encoder, make sure the flat part on the shaft of the encoder goes with the flat part of the knob. Seen above.


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