[Elecraft] KA100: "diode check scale"?

[Tim and Nancy Logan]

Hi Folks - I don't understand the expression "diode check scale" on page
14 of the amp manual. If I use the voltage scale none of the readings
seem to be in the ranges required. However, I did make the following
resistance measurements:

D1 - D8 .6M ohm (red lead on anode) and infinite (OL)  (black lead on
anode)
D9 - .4k ohm                            316k ohms
D10 - 4.7M ohms                         infinite (OL)
D11 - .67M ohms                         infinite (OL)
D12 - .57M ohms                         infinite (OL)
D13 - 4.2M ohms                         infinite
D14 - .57M ohms                         infinite
D16 & D17  - 51k ohms                   infinite

If I assume that OL means no resistance, this would suggest the diodes
are all OK (except for D9?). Can someone explain how to use the DMM to
check
the voltage? Will my resistance checks suffice? 

Regards, Tim Logan NZ7C