16 Apr
2004
16 Apr
'04
1:24 p.m.
I should probably search the archive, but has anyone experience with RA90's?
I got one recently and when I powered it up (after a thorough cleaning)
it faulted with E9.
I have (thankfully) several manuals for this device and it seems to
indicate the solenoid which "pulls the pin" on what looks like the voice
coil head motion thing may be sticking. "head motion thing" - that's a
Have you checked to see if the solenoid winding is continuous? Have you
checked what voltage/current it's getting?
Solenoids take a lot more current to pull-in than to hold. A lot of the
time, a higher voltage is applied initially to get them to pull in, then
a lower voltage is switched in to hold the core. This reduces power
consumption/dissipation. If this arrangement fails, it can appear to be
mechanical sticking, in that if the core is moved by hand it will hold in.
-tony