CD PRO 2 - The making of a high end CD Transport

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Peter Daniel wrote:
I wanted to save as much as possible, so I ordered blank display board and all ICs and put it together myself. You however, being from Europe...
Then again, you work full time and seem to have quite a lot of money to spend on your hifi projects, whereas I'm a poor students with a lot of expensive hobbies (aren't all typical male hobbies expensive?). On the other hand, if I were to calculate the risk of me damaging components and having to order new ones, it's probably economically reasonable to buy it complete... 😉

How about you other guys? How did you do it?
 
How about you other guys? How did you do it?

I ordered my board stuffed. Why? I liked the idea that it was tested and ready (well almost) to go!

I have had my kit since beginning of june and the project is going slooow, because summer is time for my other hobbies. But today I have been investigating price and so for a 6mm x 2mx1m alu sheet for my cd and some other stuff I want to build in the future.
And last week I read a page (new?) on Homeoptics home page where it is recommended that if you dont use the spring suspension you should have a dead weight of at least 7 kg, so its back to the drawing board, again.

Keld
 
I ordered the stuffed board, after phone call with Mr Thevissen. You don´t really save money with purchase the parts. If you build your PS before you order, you are ready to test everything at the moment you recive the parcel.

In fact i made a CDP as simple as possible. case build of wood and Lexan, simple PS using 7809 and 7805 and a TIP with zehners, and a relay to short the 9V at switch off. No switches, because there is a cheap and good remote.

You don´t need more skills than build a PS from the schematics Nico shows on his site. Only thing is to do everything he writes carefully!
 
The only way to save is to use your own parts and don't buy them with a kit. Also I worked a lot with display board, attaching switches, sockets, making separate enclosure etc., so it was easier for me to work with unpopulated board. Some ICs are apparently sensitive to static discharge (but you don't have to use rubber gloves and graphite powder to install them😉 ).
 
PSU Considerations

To begin with I'm thinking of building a rather simple power supply. I guess it's a good idea to build it as Mr. Thevissen suggests. Besides, there are people who have got their CD Pro2s working using that very supply. How difficult is it to build? Any tricky bits?

Also, has anyone compared that supply with a more advanced supply? Or perhaps there are people experienced enough to give comments on the circuit available at http://www.daisy-laser.nl/homeoptics/page14.html just by looking at it.

Thankful for any input.
 
The supply i made is the very simple one Mr Thevissen suggests at his page:
http://www.daisy-laser.nl/homeoptics/page28.html

I only made some things different: I use transformer with higher voltages, no problem for the positive section with 7805 and 7809 (i used 2A type). The negative sectione i regulate voltage Vkk with a Transistor and zehners, same way as in the regulated pass amps.

In the VAU specs is writen there should be no 9V without 5V, else the lens actuator may move uncontrolled, if this happens to often the coating of the lens may damage after a while. (higher block error rate will be the consequence)

At power on no prob, the 7805 will provide voltage earlyer than the 7809. (same caps).

At power off it may be a prob, because of this i added a relay which shorts the 9 V trough a little light bulb if power is switched off.

No guaranty on information, this is how far i understood. But it should be no problem to ask Mr. Thevissen himshelf.
 
Wenyue,

very nice job on your CDPRO.
I have built one myself but still housed in temporary enclosure.
I have a few question on your cdpro

1. what material did you use and how did you go about making the base to suspend the cdpro drive?
2. could you post somemore pictures of the inside layouts?

thanks.
 
power supply

Peter Daniel said:
I wanted to use split bobbins transformers, and I found them locally at Active Components. Made by Hammond, 24V AC center tapped, 48VA ea.


Peter! may i ask u.....is it possible for me to get the complete scheme of your CD-PRO-2 powersupply? i haven`t found a complete scheme yet.........and......i must say...i am NOT such an expert as u are!
But..... if i have a scheme of the PS i can build it myself!
Thanks in advance, Linda from the netherlands
 
oaktsh said:
Wenyue,

very nice job on your CDPRO.
I have built one myself but still housed in temporary enclosure.
I have a few question on your cdpro

1. what material did you use and how did you go about making the base to suspend the cdpro drive?
2. could you post somemore pictures of the inside layouts?

thanks.

If you look at the beginning of the thread and more into it, you'll find all the pics you ever needed.😉
 
iansmith14 said:
Hi Peter,

I read you are going to construct a CDP using acrylic panels. Where did you find the panels and do you commercially or mechanically laminate the panels?

Thanks,

Ian

I bought the panels locally from surplus store. If there is any interest, I can buy more and sell it on a forum, cut to desired size. 2" thickness was available recently at $3 USD per lb.😉
 
Re: power supply

linda said:



Peter! may i ask u.....is it possible for me to get the complete scheme of your CD-PRO-2 powersupply? i haven`t found a complete scheme yet.........and......i must say...i am NOT such an expert as u are!
But..... if i have a scheme of the PS i can build it myself!
Thanks in advance, Linda from the netherlands

Schematics are available at daisylaser homepage: http://www.daisy-laser.nl/homeoptics/page10.html
 
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