# PRD · Base and motion structure

Review SA01–SA05: base/feet, Y guidance, gantry, X guidance/screw and Z focus guidance/screw.


## M1-S1 · Review assembly interfaces against the locked contract

Acceptance:

- Register SA01–SA05 using P01–P12 and P23; retain unknown quantities and attachment definitions.
- Distinguish supplied coordinates, analytic interface questions and future measured evidence; preserve the full contract.

## M1-S2 · Review declared manual positioning and clearance questions

Acceptance:

- List missing Y endpoints, X 300 mm and Z 30 mm endpoint definitions, moving/fixed assignments and motion-protection questions.
- Request later endpoint and section checks; do not authorize movement or claim a usable stroke.