21 Sep
2011
21 Sep
'11
11:40 a.m.
On Wed, Sep 21, 2011 at 1:11 PM, Tony Duell <ard at p850ug1.demon.co.uk> wrote:
To the OP : Have you checked you're getting
signals back from the optical
transducer on the positioner? Is the tranducer lamp glowing (they can
burn out)?
Back when I repaired them (1988), more than 50% of the units I worked
on had burned-out optical positioner lamps (and most of those, that
was the only part that needed replacing besides dirty filters). I
learned to power on the units and look down the open door - no light
meant I knew where to start.
-ethan