Yes it does. Unlike the later ones, I found it's a 24V brake, not a 110Vac one (ahem!). I've got it powered from a small wall wart so the spindle is free to turn.

But that's not going to stop it coming out of base block, as it doesn't even know what the brake is doing. Powering the brake turns out to have been a bit optimistic.

I'm going to supply some volts to the encoder battery connection. Hopefully that is what is preventing operation but it would be handy to see some relevant documentation.

Base block disables the power stage of the servo, preventing the motor from being energised until certain conditions are met, not least a signal to enable the output. Despite having the manual, seems I'm going to have to experiment to find out.