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From: no-spam2@lycos.com on 14 Nov 2006 09:58
I finally got hold of a schematic (PDF file) for that car stereo which
I'm trying to use its CD-changer input for my MP3 player.

http://www.esnips.com/web/no-spam2-files

Anyone knowledgable in electronics who can figure out how this can be
done?
I just want to connect the headphone output from my MP3 player into the
car stereo without having to use a cassette adapter as I'm using now.

From: Matt Ion on 14 Nov 2006 12:43
no-spam2(a)lycos.com wrote:
> I finally got hold of a schematic (PDF file) for that car stereo which
> I'm trying to use its CD-changer input for my MP3 player.
>
> http://www.esnips.com/web/no-spam2-files
>
> Anyone knowledgable in electronics who can figure out how this can be
> done?
> I just want to connect the headphone output from my MP3 player into the
> car stereo without having to use a cassette adapter as I'm using now.

Looks like pins 1 and 3 are your CD in right and left, and pins 2 and 4 are
ground (use either or both).

Easiest way is probably to pick up a headphone extension cable and a male DIN
plug to fit the back of the deck; cut the female end off the extension, and
solder as appropriate into the DIN plug - red is typically right+, white or
black is left+, and the shield is ground.
From: e-nigma on 14 Nov 2006 12:53

"Matt Ion" <soundy106(a)gmail.com> wrote in message
news:Ien6h.315687$5R2.307249(a)pd7urf3no...
> no-spam2(a)lycos.com wrote:
>> I finally got hold of a schematic (PDF file) for that car stereo which
>> I'm trying to use its CD-changer input for my MP3 player.
>>
>> http://www.esnips.com/web/no-spam2-files
>>
>> Anyone knowledgable in electronics who can figure out how this can be
>> done?
>> I just want to connect the headphone output from my MP3 player into the
>> car stereo without having to use a cassette adapter as I'm using now.
>
> Looks like pins 1 and 3 are your CD in right and left, and pins 2 and 4
> are ground (use either or both).
>
> Easiest way is probably to pick up a headphone extension cable and a male
> DIN plug to fit the back of the deck; cut the female end off the
> extension, and solder as appropriate into the DIN plug - red is typically
> right+, white or black is left+, and the shield is ground.

I agree with that, but pin 4 or 5 may have to be triggered somehow to tell
the unit to switch to changer input.
or 4 and/or 5, and/or 6 might have to have a load on them before it will
switch.
Or do you think that just pressing the changer button on unit will activate
changer input?
I know a lot of new unit want to see a load before it switches to changer
input.


From: no-spam2@lycos.com on 14 Nov 2006 18:00
e-nigma wrote:

> I agree with that, but pin 4 or 5 may have to be triggered somehow to tell
> the unit to switch to changer input.
> or 4 and/or 5, and/or 6 might have to have a load on them before it will
> switch.

Perhaps someone here has a Denon CD-changer and can tell us how it
works in conjunction with a cassette-stereo like my 470R?

I don't have the unit in front of me, and don't have a user-guide, but
I seem to remember a "CD " button on the front-panel. As for
next/previous track/pause/play I suppose the existing radio station
buttons might act as controls for those functions when the CD changer
is used.

Not sure what would be telling the unit to switch to the CD changer
other than the "CD" button itself. Are you saying it might need some
external trigger input? If that's so, how would a CD-changer do that?

From: e-nigma on 14 Nov 2006 18:14

<no-spam2(a)lycos.com> wrote in message
news:1163545217.619920.98630(a)h54g2000cwb.googlegroups.com...
> e-nigma wrote:
>
>> I agree with that, but pin 4 or 5 may have to be triggered somehow to
>> tell
>> the unit to switch to changer input.
>> or 4 and/or 5, and/or 6 might have to have a load on them before it will
>> switch.
>
> Perhaps someone here has a Denon CD-changer and can tell us how it
> works in conjunction with a cassette-stereo like my 470R?
>
> I don't have the unit in front of me, and don't have a user-guide, but
> I seem to remember a "CD " button on the front-panel. As for
> next/previous track/pause/play I suppose the existing radio station
> buttons might act as controls for those functions when the CD changer
> is used.
>
> Not sure what would be telling the unit to switch to the CD changer
> other than the "CD" button itself. Are you saying it might need some
> external trigger input? If that's so, how would a CD-changer do that?
>

The unit should have either a CD changer button or a source button to change
to CD changer.
But a lot of unit will to change to CD changer without the CD changer pluged
in


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