This is the schematic and just today we got our board and after soldering the buck converter(ADP2370-3.0V) I was surprised to see 1.6v across the capacitor (C1) while I was supplying clean 6.0V DC. Soldering was done in a lab with the professional. The mistakes we think could be whether the connection of the respective pins of the regulator are correct. Any help would be much appreciated. Thank you.