From what I remember Yamaha's site has the schematics, parts list, and manuals for every bass they make.
Yeah, that's what I thought, too, but I couldn't find it!

Thanks for the tip, though... will search again!
Wow MrWalker I had to call home and make sure my bass was still in its case. Nice find. Did your bass get any interesting nicknames? My friends either call mine the landing strip or the aircraft carrier.
I'll check on the knobs when I get home. I thought the 3 way switch was a pickup selector switch, but I heard it was some kind of active/passive switch.
Cisco
Yeah, it's a very nice bass, and it's the first 6-stringer that I really feel comfortable with. I think it's due to the string spacing. Slapping and popping is really not a problem at all on this one, and same goes for chord play and other stuff I normally do on my 5-er that's tuned E-C. So this may very well be upgraded to the status of "main" bass!
No names for the present... just "the yamaha". However, I do definately understand why it's called the aircraft carrier. I've also got a GrooveTools 7, and it's just slightly wider than this one!

I had a Cirrus 6 a while ago, and the neck on that one was a lot narrower than the Yamaha, but didn't feel nearly as comfortable to me.
Ok, here is the best that I can come up with:
Top row closest neck - Bass boost/cut
Tow row closet back - Volume
Bottom row closest neck - boost/preamp level
Bottom row middle - Pickup selector
Bottom row back - Treble boost/cut
Cisco
Thanks for the input!
I know what the controls on the front do, I was probably a little unclear in my question.

The controls are (in your order)
Top row closest neck: Pickup balance
Top row back: Volume
Bottom row front: Bass boost/cut
Bottom row middle: 3-way middle boost/cut presets
Bottom row back: Treble boost/cut
However, inside the control cavity, there are four controls available. There's one for preamp level (where you can control the overall output of the bass to not overload your bass amp, for example). There are, however, three more controls. Two tiny wheels and one "screwdriwer" pot. These are described on the control cover, and are marked EQ1 center, EQ2 center and EQ2 cut/boost. So, I was wondering what these internal controls do and how they affect the pots on the front of the bass.
So, specifically, what are EQ1 and EQ2 referring to? Do they offer a means of adjusting the switch button presets, or do they alter the bass or treble controls.
Later models have a simpler preamp, I believe, with a "regular" three-band eq with bass/mid/treble boost/cut on the lower row.