Denon DCD 595

vassiliadisk · 4th May 2011, 10:41 AM

Hello All,

I recently received a Musical Fidelity DAC and I am looking for a way to get Digital Signal from my Denon DCD 595. Can anyone help me please? Has anyone ever done it? Any help appreciated.

PS I have the schematics if this helps at all....

Thank you all in advance!

guytou · 4th May 2011, 03:48 PM

hello ,on DCD595 the decoder is CXD2500BQ , on pin 60 of that chip you have an SPDIF-out , and you have to enable the SPIF-out by linking pin59 to +5V .
hope this helps,

vassiliadisk · 4th May 2011, 08:45 PM

guytou Hi!

thank you very much for the reply! Your help is appreciated!

I removed the JV402 bridge and added a bridge to JV 401 (in order to supply with +5V DC). I measured it and +5V DC is there.

I tried to connect the DAC I have (Musical Fidelity) to pin 60 (with a 75ohm resistor), but it does not work... Should it work? Am I doing something wrong?

The next step would be to add the circuit that is missing from the DCD 595? I mean IC701, BT300, resistors capacitors etc? I have the service manual (it is the same with DCD 695 that has a digital coaxial out) but I am not so experienced... so I need more help...

Thank you very much in advance!

Kind regards from Greece.

guytou · 4th May 2011, 09:34 PM

hi, you well removed JV402 to lift MD2 from ground. Unfortunately ,my SM is in german but from memory pin59,MD2 allows to enable Dout, pin60 when high , ie +5V.
You could have a look with a scope on pin 60 to see what happens .

guytou · 4th May 2011, 09:43 PM

the circuitry behind is so buffering , so you would find something of interest on pin60

vassiliadisk · 5th May 2011, 07:19 AM

Hi guytou,

It looks something like this... I will try to find tha components and fix all the circuit. It seems that it is very difficult to find the PT300... it is a pulse trans. I hope you can see the attachment.

kind regards and thanks again for your help.

guytou · 5th May 2011, 11:26 AM

hi ,I have the service manual too . On that sheme , IC 7018 and PT 300 are not mandatory , the signal is already present as is at pin60 . in case your DAC dosn't lock because some DC , try to insert a 1nF capacitor in serie (between pin60 and the DAC).

vassiliadisk · 5th May 2011, 12:12 PM

I will try this evening and let you know... I can not thank you enough for your help. I have the DAC but unfortunately, at the moment, no budget for a decent source... so I use a cheap DVD player as a source with a great DAC.... I imagine that this will be a superb upgrade.
kind regards

guytou · 5th May 2011, 12:40 PM

concerning the buffering circuitry (Ic7018 and PT300), try a search on this forum with "SPDIF out" , for exemple .you'll find a lot of hints .

guytou · 5th May 2011, 12:45 PM

oooops ,cross message . oh , DVD player could be a decent transport . For your Denon , it would work as is , I hope it will in your case

4th May 2011, 10:41 AM	#1
vassiliadisk diyAudio Member Join Date: Feb 2011	Denon DCD 595 Hello All, I recently received a Musical Fidelity DAC and I am looking for a way to get Digital Signal from my Denon DCD 595. Can anyone help me please? Has anyone ever done it? Any help appreciated. PS I have the schematics if this helps at all.... Thank you all in advance!

4th May 2011, 03:48 PM	#2
guytou diyAudio Member Join Date: Mar 2005 Location: marseille	hello ,on DCD595 the decoder is CXD2500BQ , on pin 60 of that chip you have an SPDIF-out , and you have to enable the SPIF-out by linking pin59 to +5V . hope this helps, __________________ "celui qui est parti de rien pour arriver à pas grand chose ,n'a de merci à dire à personne "-Pierre Dac

4th May 2011, 09:34 PM	#4
guytou diyAudio Member Join Date: Mar 2005 Location: marseille	hi, you well removed JV402 to lift MD2 from ground. Unfortunately ,my SM is in german but from memory pin59,MD2 allows to enable Dout, pin60 when high , ie +5V. You could have a look with a scope on pin 60 to see what happens . __________________ "celui qui est parti de rien pour arriver à pas grand chose ,n'a de merci à dire à personne "-Pierre Dac

4th May 2011, 09:43 PM	#5
guytou diyAudio Member Join Date: Mar 2005 Location: marseille	the circuitry behind is so buffering , so you would find something of interest on pin60 __________________ "celui qui est parti de rien pour arriver à pas grand chose ,n'a de merci à dire à personne "-Pierre Dac

5th May 2011, 11:26 AM	#7
guytou diyAudio Member Join Date: Mar 2005 Location: marseille	hi ,I have the service manual too . On that sheme , IC 7018 and PT 300 are not mandatory , the signal is already present as is at pin60 . in case your DAC dosn't lock because some DC , try to insert a 1nF capacitor in serie (between pin60 and the DAC). __________________ "celui qui est parti de rien pour arriver à pas grand chose ,n'a de merci à dire à personne "-Pierre Dac


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4th May 2011, 08:45 PM	#3
vassiliadisk diyAudio Member Join Date: Feb 2011	guytou Hi! thank you very much for the reply! Your help is appreciated! I removed the JV402 bridge and added a bridge to JV 401 (in order to supply with +5V DC). I measured it and +5V DC is there. I tried to connect the DAC I have (Musical Fidelity) to pin 60 (with a 75ohm resistor), but it does not work... Should it work? Am I doing something wrong? The next step would be to add the circuit that is missing from the DCD 595? I mean IC701, BT300, resistors capacitors etc? I have the service manual (it is the same with DCD 695 that has a digital coaxial out) but I am not so experienced... so I need more help... Thank you very much in advance! Kind regards from Greece.

5th May 2011, 12:12 PM	#8
vassiliadisk diyAudio Member Join Date: Feb 2011	I will try this evening and let you know... I can not thank you enough for your help. I have the DAC but unfortunately, at the moment, no budget for a decent source... so I use a cheap DVD player as a source with a great DAC.... I imagine that this will be a superb upgrade. kind regards

5th May 2011, 12:40 PM	#9
guytou diyAudio Member Join Date: Mar 2005 Location: marseille	concerning the buffering circuitry (Ic7018 and PT300), try a search on this forum with "SPDIF out" , for exemple .you'll find a lot of hints . __________________ "celui qui est parti de rien pour arriver à pas grand chose ,n'a de merci à dire à personne "-Pierre Dac

5th May 2011, 12:45 PM	#10
guytou diyAudio Member Join Date: Mar 2005 Location: marseille	oooops ,cross message . oh , DVD player could be a decent transport . For your Denon , it would work as is , I hope it will in your case __________________ "celui qui est parti de rien pour arriver à pas grand chose ,n'a de merci à dire à personne "-Pierre Dac

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