Solved! Need help hacking a Sony CD player

[BeeM]

Hi! 1st post here...

I need help hacking a Sony CD player so it can be used to output audio to another system (amplifier) as a stand alone player.

This CD player was given to me as a part of a full stereo system (info in the end) that uses a Sony proprietary blue colored System Control connector between all the modules to communicate between each other, feed power and output audio.

I want to keep the amplifier but I have no need to keep the CD player and I want to give it away to a friend of mine. He does not have a Sony system so I need to hack into the CD player in order to feed it power (and I don't know how many Volts and if AC or already DC) and hijack the audio output to standard RCAs so my friend can connect it to his system. (yes there is a optic output but my friend's system does not have that input, so this route is invalid. OR... Is there any very cheap converter from Optic Out to RCA?)

Info:

• The main module is a Sony Graphic Equalizer Model No. SEQ-H4800 (Input: 220-230V AC, 50-60Hz, 40W)
• The CD player (and also radio) is a Model HCD - H4800

What I need:

• Know where to input power (and how much; AC/DC?)
• Where to output audio RCA (left, right)

PS - I found the Service Manual here:

https://elektrotanya.com/sony_hcd-h4800.pdf/download.html#dl

and it seems it works with 220-230V AC and there is a button combination to power it up as stand-alone, solving one problem.
But I cannot figure out where to feed the power and extract the audio signal. Hope this manual helps...
Thanks for your help.

 

[americanaudiophile]

Since you have the main unit you should be able to check which contacts in the cable handle power by measuring them there. I suspect the voltage will be DC.
The conductors meant to carry audio from the CD won't have any voltage on them at all without the CD/Tuner connected.
An optical to analog converter isn't expensive. If you can get it powered up then that will simplify things. Might sound better too.