I am using the mvreg command as I have a multivariate regression (3 independent variables regressed on a set of independent variables)

For example instead of

reg y1 = x1 + x2
reg y2 = x1 + x2
reg y3 = x1 + x2

I do the following:
manova y1 y2 y3 = x1 c.x2
mvreg

My question is in a normal regression I can go on to predict residual and perform tests for OLS assumption such as estat hettest etc. How do I do this when using mvreg?