[GreenKeys] What are these odd devices on 28RO

[ad7i]

Thanks to all who provided info about the reading bulb operation and the
vertical tab.

The lights are dead on my 28RO but the both bulbs have continuity (and
probably 30 years of solidified oil haze on them) so I may not have the
cross connects on the barrier strip at the back of the housing set up.  May
be as simple as no AC power to the transformer for the lights. I think I
have a 28 manual somewhere in my equipment library so I will look there for
guidance.

Thank you everyone!

73, Paul, ad7i



On Wed, Oct 2, 2019 at 12:28 PM w8roi <w8roi at wowway.com> wrote:

> Paul
>
> The normal “ON”  means that the internal cabinet lights will turn on with
> the main power switch.
>
> The “Maintenance on”  will turn these lights on to have light in there for
> paper change, ribbon change and any other work done with the machine not
> running.
>
> “Off” kills the lights altogether, I think.
>
> Hope this helps.
>
> Ralph- W8ROI
>
>
>
> Sent from my iPhone
>
> On Oct 2, 2019, at 11:07 AM, ad7i <ad7i at ad7i.net> wrote:
>
> Greetings --
>
> I have a model 28 RO that came out of an engineering or architectural firm
> near NYC about 20+ years ago.  I've run it a couple of times over the
> years, but have recently greased and lubricated it again and hope to run it
> a lot more.
>
> There are a couple of items under the hood that I don't understand and I
> wonder if people here could give me some info about them.
>
> First is a Maintenance switch that's under the lid on the right hand side,
> on an aluminum panel.  It looks like there's an AC transformer and other
> components behind this panel.  Does anyone know the purpose of this
> switch?  Or the function of the electrical components on the back side of
> the switch panel?
>
> I don't know if attached photos are allowed, so instead here's a link to
> the photo on Dropbox:
>
> https://www.dropbox.com/s/c1y32kg3clkdnyt/m28ro%20switch.jpg?dl=0
>
> Second, there's some sort of a wheel arrangement on the paper roller, on
> the left side of the printing mechanism.  Is this some sort of a form-feed
> system, or something else?  There a small lever at the bottom of the photo
> (see smaller red arrow) that seems to disengage this device, and it has
> been disengaged by a small wire that holds the lever down.
>
> https://www.dropbox.com/s/a5f38odydara7z6/m28ro%20wheel.jpg?dl=0
>
> Thanks to all those who can provide some insight into what these things do.
>
> 73, Paul, ad7i
>
>
> ______________________________________________________________
> GreenKeys mailing list
> Home: http://mailman.qth.net/mailman/listinfo/greenkeys
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:GreenKeys at mailman.qth.net <GreenKeys at mailman.qth.net>
>
> 2002-to-present greenkeys archive:
> http://mailman.qth.net/pipermail/greenkeys/
> 1998-to-2001 greenkeys archive:
> http://mailman.qth.net/archive/greenkeys/greenkeys.html
> Randy Guttery's 2001-to-2009 GreenKeys Search Tool:
> http://comcents.com/tty/greenkeyssearch.html
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to w8roi at wowway.com
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/greenkeys/attachments/20191002/f78f58b8/attachment.html>