The VOR circuit breakers supply 115v ac power for receiver operation. VOR/MB receiver 1 gets power from the ac standby bus, section 1 and VOR/MB receiver 2 gets power from the ac transfer bus 2, section 2.
The NAV control panel circuit breakers supply 115v ac for control panel operation. The captain control panel gets power from the ac standby bus and the first officer control panel gets power from the ac transfer bus 2.
The NAV control panels receive 28v dc for control panel monitor operation and for the ILS 28v dc ILS tuned output when you tune an ILS frequency. The captain control panel receives 28v dc from the 28v dc standby bus, NAV sensor DC-1 circuit breaker. The first officer control panel receives 28v dc from the 28v dc bus 2, NAV sensor DC-2 circuit breaker.