It sure do. Be assured, for all future occasions, that the ... ah ... interesting 8500/9500/Quadra 800 case style has a charm of its own. Replacing battery or RAM is an exercise in almost complete demolition, sometimes literally as the models suffered from a strangely rapid embrittlement of the internal plastics. In the 8500/9500, the plastic PCI-card-retaining tangs—and the main power-switch tangs—snap off as you look at them. The chiefest requirement for removal of the MLB is to remove the daughter-card first, and to be sure that it is completely bottomed in its slot when you reassemble the Mac. Failing to bottom the card, which can take considerable force when the slot is in good condition, is equivalent to having no processor installed.
Despite the layout, it is also necessary to work around the installed daughter-card to do anything useful with the CUDA switch. It needs a long, thin, nonconducting rod and a good light. The whole point of pressing the CUDA switch, and holding it in for 40-odd seconds (assuming that your battery shows 3.4V or more when measured in-circut), is to signal to the system that the present hardware is what has to be taken account of. That cannot be done if the daughter-card is not yet installed.
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