Yamaha cdx?
- Thread starter ojom
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the-real-mandak
Super Member
onwardjames I don't have the final price but are waiting for a responce from the dealer, I will PM you if somthing comes out of it.
regarding mounting the laser: I have not done this yet, I am waiting for some lasers to start this. But if things go a bit off track then you need a scope to adjust the laser, basicaly the scope thing is the safe and best way to do it.
The KSS210A is mounted in Yamaha's topmodel from 1994 (CDX-880), and it is said that also the KSS150A will work in this unit.
regarding mounting the laser: I have not done this yet, I am waiting for some lasers to start this. But if things go a bit off track then you need a scope to adjust the laser, basicaly the scope thing is the safe and best way to do it.
The KSS210A is mounted in Yamaha's topmodel from 1994 (CDX-880), and it is said that also the KSS150A will work in this unit.
Thanks again, T-R-M. I fired her up today...same thing. First it quits playing....then REVVING UP (eject a cd, and it will nearly fly out at you) then press play again, and all is well.
just weird.
If there is soldering to do, I would not attempt. Adjusting the laser is another thing I have no business doing. Blinding myself isn't worth it. I'm gonna really run her for the next two days, see what happens.
If it isn't stratospheric, I may have Nakdoc do the work.
just weird.
If there is soldering to do, I would not attempt. Adjusting the laser is another thing I have no business doing. Blinding myself isn't worth it. I'm gonna really run her for the next two days, see what happens.
If it isn't stratospheric, I may have Nakdoc do the work.
the-real-mandak
Super Member
You will have to ask Nakdoc about the repair, but try to leave the player on for a few days and see if the problem shows during the period.
Gonna driver her all day tomorrow, see what happens!:scratch2:
the-real-mandak
Super Member
You don't have to play a CD, just leave it on so it do not get cold. Another thing you can do is to open up the cabinet and see if you can push a bit on the cables coneckting the laser with the PCB, to make sure they are well seated (unplug the power while doing this and be carefull don't over do it).
Now this I can do. I understand the concept....when cold, the wires aren't conducting well enough.... this I will do.
Fired her up today, played the entire "Come Away With Me" cd, not a hitch!
Still warm. Will keep ya posted.
Fired her up today, played the entire "Come Away With Me" cd, not a hitch!
Still warm. Will keep ya posted.
Yamaha CDX 750E
Schematic
Does anybody know a good place to get a service manual/schematic for a CDX 750E - I have made an enq at one site, but know there is a lot of quality variation in the reproduction (paper or CD) that these sites put out.
OP Amps upgrade
I am considering upgrading the Op Amps in mine and need to understand which OP Amps to change - I am fairly sure it is a pair of uPC4570C (DIP8) that can be changed to yield an improvement in sound quality - can anyone confirm which ones? - just want to make sure.
TIA
John
Schematic
Does anybody know a good place to get a service manual/schematic for a CDX 750E - I have made an enq at one site, but know there is a lot of quality variation in the reproduction (paper or CD) that these sites put out.
OP Amps upgrade
I am considering upgrading the Op Amps in mine and need to understand which OP Amps to change - I am fairly sure it is a pair of uPC4570C (DIP8) that can be changed to yield an improvement in sound quality - can anyone confirm which ones? - just want to make sure.
TIA
John
the-real-mandak
Super Member
The manual is here:http://www2.yamaha.co.jp/manual/pdf/av/english/cdP/CDX-750.pdf
I can't help with th eservice manual or the OP's
I can't help with th eservice manual or the OP's
Bonafidelity
New Member
Yamaha CDX parts
I just purchased a CDX-1030ti
while I was doing pre-purchase research on this model I stumbled across a website that appears to offer many of the parts for the CDX and other Yamaha models - I haven't personally used this site but here is the link in case it may help someone else: http://tigerdirect.partsearch.com/ModelSearch.aspx?MfgName=Yamaha+Electronics+Corporation&BrandName=Yamaha&ModelNumber=CDX&x=21&y=10
I just purchased a CDX-1030ti
while I was doing pre-purchase research on this model I stumbled across a website that appears to offer many of the parts for the CDX and other Yamaha models - I haven't personally used this site but here is the link in case it may help someone else: http://tigerdirect.partsearch.com/ModelSearch.aspx?MfgName=Yamaha+Electronics+Corporation&BrandName=Yamaha&ModelNumber=CDX&x=21&y=10
hypertone
Keepin' it Analog
I just got a CDX-1110U. This thing is a beast and weighs as much as your average vintage receiver. There's no plastic anywhere in site. Sounds great too. Does anyone know if this uses opamps for the analog stage? I'm just wondering if I can make it even better with some modern high end opamps.
Well, I got the manual for the CDX-750E - just as described, a Yamaha original, with fold outs, and some colour content.
And I ordered up the OP Amps, eventually decided on OPA2228P as they are pin compatible and higher performance than OPA2604P, which was my other choice, oh, and a couple of sockets for them as well.
All I have to do is fit them !
John
And I ordered up the OP Amps, eventually decided on OPA2228P as they are pin compatible and higher performance than OPA2604P, which was my other choice, oh, and a couple of sockets for them as well.
All I have to do is fit them !
John
Well, I swapped them over - I'm still digesting the amazing change in the sound quality - first impressions, often the most accurate - much more bass ! something I always thought was lacking in this CDP - and a much more subtle soundstage - most noticable listening on headphones 
I was unable to fit the sockets I bought as the drilling pitch for the rows of holes in the PCB did not allow it (set too wide) -the rigid pins on the DIP8 socket were never going to go in.
So I now have 2 x BB OPA2228P instead of 2 x uPC4570C - in my CDX-750E and I love it !
EDIT: I only have a crappy digital camera at present, no good for close ups - and it EATS batteries ! - so no pics, sorry.
John
I was unable to fit the sockets I bought as the drilling pitch for the rows of holes in the PCB did not allow it (set too wide) -the rigid pins on the DIP8 socket were never going to go in.
So I now have 2 x BB OPA2228P instead of 2 x uPC4570C - in my CDX-750E and I love it !
EDIT: I only have a crappy digital camera at present, no good for close ups - and it EATS batteries ! - so no pics, sorry.
John
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the-real-mandak
Super Member
Sounds like an easy and wery rewarding upgrade, nice.
If any body else do this, plese make before and after pics. This might encurage pepole to get the most out of there CDP's
If any body else do this, plese make before and after pics. This might encurage pepole to get the most out of there CDP's
CDX-750E OP Amps Upgrade
Ok, so I decided to have a go with the camera, new batteries ! - they are quite poor pics - one day I'll get a decent camera !
# 1. Overall shot of the main PCB - note the DAC screening box in the middle, the 2 OP amps are to the right of the DAC box and ringed in red.
# 2. A close up of the two changed OP Amps, (the 2 DIP8's in the middle) note the really ugly added resistor, must have been added at the factory - a really late mod for it to be like this - I have seen it on others pics of this PCB.
EDIT: Thanks for advice t-r-m, I did it in a bit of a hurry, so will re-do pics and repost.
EDIT #2: 7/07/08 (see t-r-m post below) Tried tripod, extra light source, less ambient light (flash), increased camera resolution, further away, closer, only 2 settings for subject distance on this camera - and got no pics better than ones already posted :sigh:
John
Ok, so I decided to have a go with the camera, new batteries ! - they are quite poor pics - one day I'll get a decent camera !
# 1. Overall shot of the main PCB - note the DAC screening box in the middle, the 2 OP amps are to the right of the DAC box and ringed in red.
# 2. A close up of the two changed OP Amps, (the 2 DIP8's in the middle) note the really ugly added resistor, must have been added at the factory - a really late mod for it to be like this - I have seen it on others pics of this PCB.
EDIT: Thanks for advice t-r-m, I did it in a bit of a hurry, so will re-do pics and repost.
EDIT #2: 7/07/08 (see t-r-m post below) Tried tripod, extra light source, less ambient light (flash), increased camera resolution, further away, closer, only 2 settings for subject distance on this camera - and got no pics better than ones already posted :sigh:
John
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the-real-mandak
Super Member
Hyperion the pix do give an idea about what needs to be changed, so it's ok and in any case better than nothing.
A small hint on taking these photos with cheaper cameras: put the camera on something so it stands by it self (tripods, books, cd covers, what ever works), use auto focus (or manual, but it's a bit more tricky), place the object so it is easy to get in the viewer, add light from a lamp (from 2 sides is better), if possible use night/low light settings, use self timer.
A small hint on taking these photos with cheaper cameras: put the camera on something so it stands by it self (tripods, books, cd covers, what ever works), use auto focus (or manual, but it's a bit more tricky), place the object so it is easy to get in the viewer, add light from a lamp (from 2 sides is better), if possible use night/low light settings, use self timer.
glum
yamaha and stuff
Here Is A Early One Cd-x2
I havent seen one posted yet I just got it today. It realy is like new I was totly suprised by the condition it was a realy crapy pict on ebay so I met the opning bid and won.I have been useing a panasonic dvd player with 192hz/24bit dac and realy just bought it to go with my other early 80's yamaha stuff .Not expecting what I got the panasonic just whent back to dvd duties. I cant bleave the diferance. the mids and highs are much more defind and the bass is tighter(faster) less "muddy".SO where can i get a new laser and any drive belts that may fale?Il get them before there needed if I can ?may be a cdx1 next!
