Re: [T3] Hooking up a Sapphire Playtape I

[Greg Merritt <gregm@vwtype3.org>]

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	Ah!  Thanks to all who pointed out the obvious, namely, 
removing the cover from the radio. :)  I saw this:

http://home.earthlink.net/~gmerrittsprint01/inside_playtape.jpg

	The blue wire most definitely powers the dial's lamp.  You 
can see it snaking down behind the tape drive motor toward the dial.

	That leaves black, brown, and brown-with-stripe.

	Brown-with-strip is clearly soldered to the chassis -- ground.

	The black wire goes to the... transformer, is it? there in 
the upper right corner of the unit as pictured -- the component to 
the right of the pcb.  Sharing this lead on the transformer is a thin 
black wire that goes to the power/volume switch, the switch on the 
right in the picture.  (The radio is upside-down, that is, the cover 
I removed was from the bottom.)  Also sharing this lead on the 
transformer is a capacitor that runs to ground.  Is this for noise? 
A lead on the left end of the transformer has a red wire that goes to 
the pcb.

	The plain brown wire exits the main chassis at the rear of 
the unit, and enters the component that's attached to the rear of the 
box.  This external component has got like a giant piece of red 
heat-shrink tubing surrounding it.  This brown wire must be the main 
speaker lead.

	I'm thinking that the brown/brown-with-stripe pair were 
intended to run together to the speaker, and that the unit was 
grounding through the mounting bolt.

	I'm pretty confident about all of this, unless anyone has 
some warnings or sees some mistakes in what I've described.

	Thanks again for the suggestions to remove the cover. :)

-Greg

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