The Origin Vault expansion option has both a main (master) power switch at the rear and a power button in the front, as shown in Figure 3-1.

To power on the Origin Vault expansion option, you turn on the main power switch at the rear and then press the power button on the front. On the replacement controller board assembly, the front power button remains depressed after you press it (the on position); the original Origin Vault power switch was a momentary on/off switch.

To power off the Origin Vault expansion option, you press the front power button, which comes (and remains) out, and then you turn off the main switch at the rear. Pressing the power button at the front is a soft power-off. Residual power is still supplied to the unit as long as the main power switch at the rear is on. The main power switch is a circuit breaker that cuts off all power to the Origin Vault system.

If you turn off the main switch and do not press the power button at the front, the Origin Vault system immediately powers back on when you turn the main switch back on. The system stores the state of the front power switch independently of the main power switch so that when power is restored after a power failure, the system immediately powers back on.