[GreenKeys] Woot! M15 has arrived - and I am already STUCK!

[drlegendre .]

As I mentioned earlier, the PO said the machine had been freshly
lubricated, and from looking it over, I believe him. I know what grimy,
sticky old grease is like - and that's not what I'm seeing in here.

Honestly, it looks like it could have been run in the last couple of months
- it's very tidy in there. The vast majority of the (visible) wiring looks
original and undisturbed. There's a couple of splices over near the fuse
socket on the base (is that standard - it uses a screw-in domestic fusebox
type of fuse?) which I haven't investigated, though.

When it arrived, the long wiring block on the right side was set up like
this:

#34 jumpered to #45
#32 - Ring of TRS male plug
#46 - Tip of TRS male plug

No other external connections, other than the AC power cord which I believe
is on #21 & #22. It powers up fine and chatters, so I figure the AC power
side is OK.

On Sun, Sep 6, 2015 at 1:30 PM, <COURYHOUSE at aol.com> wrote:

> I  dunno----
>
> In a message dated 9/6/2015 11:26:59 A.M. US Mountain Standard Time,
> drlegendre at gmail.com writes:
>
> Based on the measurements, they're about 90R each -  so about 180R series
> / 45R parallel. This is also the figure (90R) quoted in the wiring diagram
> that I'm working from.
>
> On Sun, Sep 6, 2015 at 1:21 PM, <COURYHOUSE at aol.com> wrote:
>
>> what are the ohms  of the  coils!?!?
>>
>>
>> In a message dated 9/6/2015 11:05:32 A.M. US Mountain Standard Time,
>> drlegendre at gmail.com writes:
>>
>> I've done some more digging around, and came up with something I can't
>> make sense of.
>>
>> There's a toggle switch on the typing unit, with a screw-down locking tab
>> to prevent accidental movement. This seems to be the DPDT switch which
>> configures the solenoid coils in the holding magnet as either series or
>> parallel connection. The switch was set to 'series' and I measured ~190R at
>> terminals #45 & #46 which I believe are correct for the selector.
>>
>> I was expecting a 55R winding.. but got 190R. Flipping the switch dropped
>> the reading to about 50R, which is close to what I had initially expected -
>> so OK.
>>
>> Trouble is, it takes way more than 60mA to pull in that magnet. When I
>> connect the 120V / 60mA supply, it just maxes out the current and sits
>> there. Using a bench power supply, I found that it requires more like 265mA
>> to pull in the magnet.
>>
>> What's going on here?
>>
>> On Sun, Sep 6, 2015 at 11:51 AM, drlegendre . <drlegendre at gmail.com>
>> wrote:
>>
>>> Thank you, Jim! Just digging into it now..
>>>
>>> On Sat, Sep 5, 2015 at 10:22 PM, Jim Haynes <jhhaynes at earthlink.net>
>>> wrote:
>>>
>>>>
>>>
>>
>>
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