sh101 schematics

[Rob Zero]

Well, I seem to have a little problem. I *think* my cat was sitting on the
dismantled sh101 I have sitting on my work table.

I need to figure how to set vr1 and vr2.

it seems that vr1 is just the voltage regulator trim, so I set that so that
I got out exactly 5v on the 5v supply.

Now, vr2 will be a little more difficult. it looks like vr2 is set to trim
the d/a converter, but what exactly would be the proper procedure for this.
I would guess that upon turning on that the output of pin 1 on IC9 should be
zero volts. Is this correct?

Rob