The attached pic is a simplified section of a circuit I'm trying to understand. The arrow points to a point where on some boards the voltage is +5v and others it's around +2.19v. The boards with 5v are good but the others not so much. I'm no expert on the PIC but shouldn't the signal from the PIC be either high (5v) or low (~0v)? I don't have access to the PIC code. Thoughts?