Icom IC-7100 amateur radio circuit - is this a designed short?
I agree with @BrianDrummond 's comment; it looks like a drawing error.
If you disregard the connection from IC6402's CE pin to the HV rail, the circuit makes sense. The CE pin is held high when 5V is present, and can also be held high for a while by the supercap C6103.
I don't know what the HV rail is used for elsewhere so it's hard to guess what the intention is. But it doesn't make sense to provide a hard short to ground from an &quot;HV&quot; power rail, and there's no reason at all to ground both sides of C6721.
ICOM is known for good engineering - perhaps I'm missing something. But I don't think so! :)
Sorry about your new radio. I'd call ICOM and see what they say. At the least, they should look at it under warranty and then determine if the problem is theirs or if it was due to your power supply. They might simply fix it regardless :)

I just thought of another possibility. Perhaps the HV rail is for functionality that has been omitted (or disabled) on this product. If HV isn't used, and if IC6402's VOUT is also not used, then that short could be an easy way of simply &quot;turning off&quot; those subcircuits.