Using the example form Ranman256, the code might look like:
(Option value for "Repaired" = 1, Option value for "scrapped" = 2)
Code:
sub frame1_afterupdate()
SELECT Case frame1.value
Case 1
'If the control name is "Repairs_done"
Me.Repairs_done.SetFocus
Case 2
'If the control name is "Date_Scrapped"
Me.Date_Scrapped.SetFocus
End Select
Note that I replaced the space with underscores in the control names.....
Replace "Frame1" with the name of your frame control and the "Repaired" & "Scrapped" controls with your names.