DEC 3000 trouble

This is likely off-topic - I have no idea how old the DEC 3000 is - but I'm hoping it will fall cool hardware exception. I think its either a model 600 or 700. At any rate, its very large and is a tower design. I have not yet used the system and am trying to get it to boot. I do not have a keyboard, mouse, or monitor for it, so I need to connect via terminal, but am having som trouble. For a terminal, I am using an Apple Powerbook G4 with ZTerm set to 9600, 8, n, 1. I'm using a Keyspan USB-Serial adapter and a null modem adapter. I've connected my "terminal" to the 25 pin printer serial port on the DEC 3000. I power up the DEC, it does its whirling and spinning up, but I never get anything at all on my terminal. I've tried booting with the S3 switch (whicdh I understand is supposed to change from kb/ mouse/monitor to console mode) in both directions, but to no avail. The LED on the front reads "FD". It's possible that the RAM I have installed (which I got from another DEC 3000) is not appropriate for the system. Any suggestions on what I need to do to get this to work are very much appreciated. This is completely out of my area of expertise and I hate to keep power cycling the DEC while I experiment. Thanks! Tom Applefritter www.applefritter.com