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 Post subject: Pioneer CLD-950 AC3-RF Mod
PostPosted: 22 Jul 2020, 22:13 
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Hi All,

I would like to try and mod my CLD-950 to add an AC3-RF Mod. I can't find any evidence of people doing it on this model and none of the diagrams match at all from other Pioneer models.

Any tips on where to even start?
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 Post subject: Re: Pioneer CLD-950 AC3-RF Mod
PostPosted: 26 Jul 2020, 00:01 
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This player appears to be the equivalent to the US model, CLD-S303.

Unfortunately, there doesn't appear to be a lot of information on it on our archives nor hifiengine's site. Regardless, you can still research for points by simply looking inside for hints on where the points might be. Here is an example inside of a CLD-M90.


Look for labels on jumpers....
Image


.... as well as labels where the connectors attach to different boards (if your player has multiple boards).
Image


All of these points can be directly soldered to an AC3-RF board once you build one.
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 Post subject: Re: Pioneer CLD-950 AC3-RF Mod
PostPosted: 30 Jul 2020, 21:57 
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Thanks so much!
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 Post subject: Re: Pioneer CLD-950 AC3-RF Mod
PostPosted: 01 Aug 2020, 02:31 
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Forgot to mention.

My understanding (at least from what I have read) is that many European LD players have a "Mute Active Low" (MAL) mute control so you have to consider that when building your board. I tried unsuccessfully to conceive of a board that can do both types of mute.

To find out for sure if your player has either version, find the mute point and place a voltmeter on the point to see how the voltage fluctuates during play / pause (MAH = +5V on pause & 0V on play and MAL = +5V on play & 0V on pause).

You can read up on some information on this posting (7th post down).

https://laserdiscplaza.fr/forumld/viewtopic.php?t=579


And this is the actual circuit diagram I used on my recent mods that are for MAH players only.

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