How to replace the ViewPoint Illuminator on traditional analog refractometer

How do I replace the ViewPoint Illuminator on my refractometer? I have a MISCO Glycol and Battery Tester, model number 7084VP+.

The ViewPoint illuminator has a built-in coin cell battery with a ten-year shelf life. It is designed for between 3,000-5,000 fifteen-second uses. In the event the battery dies, just send your entire refractometer to MISCO, and we can replace the ViewPoint for you. You may also order a replacement online and change it yourself. Do not try to disassemble the ViewPoint, there are no user serviceable parts inside.

For PDF instructions on how to replace the ViewPoint Illuminator, click HERE