Subject: Re: [sloan-25mlog 3354] 2.5m obslog 20170204 (SJD 57789)
From: John Downey
Date: Sun, 5 Feb 2017 08:14:38 -0700
>=20
> Notes to developers and engineers:
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
> 1. Information for cartridge bay light curtain: During afternoon =
checkout, we
> found the cartridge lift didn't move up/down, the control box showed =
the OUTPUT
> 6 was off, we opened the inside cartridge bay door, and saw the =
OUTPUT6 came
> back on, the lift moved. Then, we closed the door back, OUTPUT6 went =
off, the
> lift couldn't move. We tried open the door, moved the list, closed the =
door,
> moved the lift for three times. When the door was closed, OUTPUT6 went =
off, the
> lift couldn't move, when it opened, the lift moved. Just when we =
decided to
> operate in the way: open the inside door, get the lift into the =
position, close
> the door back, the lift moves with the inside door closed. This just =
for your
> information to check whether the door has anything to do with OUTPUT6.=20=
>=20
=20
This is good info, thank you. =20
We did have some trouble with the inside door in December, and it's =
possible that the track is mis-aligned and interrupting the lowest beam =
slightly, or that it's closing too hard and the vibration from that is =
upsetting something - either the track alignment or the mirror itself.  =
I'll look at this tomorrow when I get in.
I've also been thinking of adding a better adjustment system to the =
mirrors - the north mirror does not lock down well and a more positive =
screw adjuster might help some of these problems.=