Yamaha cdx-593 help tweak

sandro1974 · 9th March 2007, 02:54 PM

Hello everybody,
Some years ago I replaced JRC5532dd with AD OP275 in output stage of my cd and now I am interested in replacing of a JRC2068. JRC2068 is placed in front of the OP275 and after DAC YAC514F Yamaha pro-bit.
I am not an expert and do not have service manual so can not tell what is that thing do but I know it is trash. Which op. amp shall I use to replace it? Is OPA2134, OPA627, AD8620 or AD8065 good for that job, which is the best? Looked at data sheets but it is like atomic phisic to me

I will post images if they can help You to understand what am I trying to do.

Thanks,
Sandro

Cheers

sandro1974 · 9th March 2007, 08:08 PM

Just to add some pictures to help becouse I do not have service manual.

Cheers

singa · 10th March 2007, 06:20 AM

Hi Sandro,
JRC2068 is also a dual opamp same like OP275.It is part of I/V stage.You can also use OP275 or others that you think is suitable.

sandro1974 · 10th March 2007, 07:29 AM

Thanks for fast reply and sorry for bad English. I searched the internet for two days and with my a bit poor knowledge of electronic I find that I could use some quality dual op-amp but Yamaha put on final stage JRC5532 and in I/V stage (You call it that,I dunno know what is it) JRC2068 so I was confused.
I`ll buy DIL8 socket and try few of them, they are cheap op-amps. I just hope that the magic white smoke will stay in them

Thanks again and all the best

Cheers
Sandro

sandro1974 · 12th March 2007, 09:40 AM

Made a choice by looking at datasheets, taking care of Op-amps voltage capacity, bandwith and slewrate, think that the AD826 will be the best.

hope not to burn something

Cheers

sandro1974 · 12th March 2007, 11:16 AM

One more question, does somebody have service manual or schematic for cdx593?

Cheers
Sandro

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9th March 2007, 08:08 PM	#2
sandro1974 diyAudio Member Join Date: Nov 2006	Just to add some pictures to help becouse I do not have service manual. Cheers

10th March 2007, 06:20 AM	#3
singa diyAudio Member Join Date: Apr 2004 Location: near	Hi Sandro, JRC2068 is also a dual opamp same like OP275.It is part of I/V stage.You can also use OP275 or others that you think is suitable.

10th March 2007, 07:29 AM	#4
sandro1974 diyAudio Member Join Date: Nov 2006	Thanks for fast reply and sorry for bad English. I searched the internet for two days and with my a bit poor knowledge of electronic I find that I could use some quality dual op-amp but Yamaha put on final stage JRC5532 and in I/V stage (You call it that,I dunno know what is it) JRC2068 so I was confused. I`ll buy DIL8 socket and try few of them, they are cheap op-amps. I just hope that the magic white smoke will stay in them Thanks again and all the best Cheers Sandro

12th March 2007, 09:40 AM	#5
sandro1974 diyAudio Member Join Date: Nov 2006	Made a choice by looking at datasheets, taking care of Op-amps voltage capacity, bandwith and slewrate, think that the AD826 will be the best. hope not to burn something Cheers

12th March 2007, 11:16 AM	#6
sandro1974 diyAudio Member Join Date: Nov 2006	One more question, does somebody have service manual or schematic for cdx593? Cheers Sandro

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