If you can see both arrows (be it in dim light for the "slow" or under bright sunlight for the "over" arrow) it means that -at least- the meter is working and no POD problems are (supposedly) at sight.
You can check it (with no film inside) indoors for long exposure times, and outdoors for short exposure times. If it´s OK, both lights should turn on when lighting conditions force the camera to shoot at less than 1/30th or faster than 1/500th.
Later, and after this previous check showed to be OK, load any suitable film, say ISO 200shoot, and wait till the prints come home.
If everything is OK, you´ll be gratefully surprised!
Cheers
Ernesto