How do I test board components when check pins are available?
Yes, these are designed to be measured while the equipment is running.
The test points are typically DC. If your guide says for example &quot;7 V&quot; it means 7 volts DC, and you should set your meter to the &quot;V= 20&quot;. 20 is the upper range, and should be comfortably higher than what you expect. Don't put it on &quot;2&quot; if you expect 2 volts.
But voltages are measured between two points, so you need to find a ground reference. Hopefully the guide that tells you about the voltages also shows where the ground reference is, otherwise you can gamble and try the metallic part of the plated screw hole shown in the bottom right of your image.
Some of the test points may be expected to show more complex waveforms than just a simple fixed voltage. To check these you normally need an oscilloscope.