I'd give you a copy of the service manual, but I was asked not to distribute it. Sorry.
Doesn't mean I can't point stuff out on a picture
I've left the usb port in for orientation purposes.
I've marked two of the JTAG testpoints; but I can't see from the photo I used where the testpoints are for the other two. So the diagram points to the appropriate IC pads instead. As far as the other components go, there's missing pullup/pulldown resistors for TCK, which I've marked as they're probably important; and missing caps to ground for TDI, TMS and TCK which I haven't marked as they're probably less important (I don't know the values either.)
Edit: uhoh - on the schematic the jtag wires are also crossed out at the cpu end. I hope they're still connected...