tempo for CDPRO2 drive ?

ZERS · 10th January 2005, 07:25 AM

Hi,

I'm still designing the PSU for the CDPRO2 drive and I'm trying to deal with the power's delay between the +5V and the +9V.

I've noticed that the mechanics (+9V) should be powered after the servo (+5V) of the CDPRO2M, a delay close to 150ms.

How did you deal with that ?

Regards

Ken_m_shih · 10th January 2005, 08:37 PM

Hi ZERS,

Here is how we did it:

http://www.myclie.info/images/0920CASE-1.pdf

Hope this help.

Thanks
Ken

ZERS · 11th January 2005, 07:26 AM

Quote:

Originally posted by Ken_m_shih
Hi ZERS,

Here is how we did it:

http://www.myclie.info/images/0920CASE-1.pdf

Hope this help.

Thanks
Ken

Sorry, but I do not understand where the delay is...

Is it the board (at the bottom of the schematic) vhere the S9 ; S5 connectors are ? Seems that this is the controller board, isn'it ?

Does it mean that the delay is managed by the µC ?

Regards

YENFU · 11th January 2005, 03:08 PM

The CD-PRO2 Transport(I mean the DIYZONE Kit) have a specially designed control board.The control board will send the signal to the 'relay board',and control the power up sequence.

By doing so,we could extend the life of CD-PRO2M module.You know,it's the most expensive part of the KIT.

Peter K · 11th January 2005, 06:28 PM

Hi Zers,

I did not implement any delay for the +9V in the powersupply (using CDPRO2). No problems at all.
Used a LT317 for the 3 psu's (2 x 5V, 1 x 9V). I think the powersupply is quit slowly starting up and that the 5V is because of that quicker at its requested voltage than the 9V. I am not sure if this is the real reason that I am not experiencing any problems with powering the CDPRO2.

Good luck,

Peter K

YENFU · 11th January 2005, 07:00 PM

As Daisy stated in their datasheet,the 9V/5V power up sequence is important.Although this will not damage the CD-PRO2M imediatedly.......

With the wrong sequence,the laser pick-up may damage.

ZERS · 12th January 2005, 09:52 AM

Hi all,

Well, taking into account the price of the CDPRO2 unit, I won't bypass the daisylaser recommandations regarding the power up delay

by the way, I will use a relay linked to a transistor, zener and cap to perform the 150ms delay as shown in this schematic.

Regards

Coulomb · 24th January 2005, 03:21 AM

Quote:

Originally posted by ZERS
Hi all,

Well, taking into account the price of the CDPRO2 unit, I won't bypass the daisylaser recommandations regarding the power up delay

by the way, I will use a relay linked to a transistor, zener and cap to perform the 150ms delay as shown in this schematic.

Regards

Hey Zers, if you make a PCB for that let me know, I would like one myself.

Regards

Anthony

10th January 2005, 07:25 AM	#1
ZERS diyAudio Member Join Date: Jan 2004 Location: LYON	tempo for CDPRO2 drive ? Hi, I'm still designing the PSU for the CDPRO2 drive and I'm trying to deal with the power's delay between the +5V and the +9V. I've noticed that the mechanics (+9V) should be powered after the servo (+5V) of the CDPRO2M, a delay close to 150ms. How did you deal with that ? Regards

11th January 2005, 07:00 PM	#6
YENFU Account Disabled Join Date: Nov 2004 Location: Dallas	much safer As Daisy stated in their datasheet,the 9V/5V power up sequence is important.Although this will not damage the CD-PRO2M imediatedly....... With the wrong sequence,the laser pick-up may damage.

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10th January 2005, 08:37 PM	#2
Ken_m_shih Account Disabled Join Date: Sep 2004 Location: NY, NY	Hi ZERS, Here is how we did it: http://www.myclie.info/images/0920CASE-1.pdf Hope this help. Thanks Ken

11th January 2005, 03:08 PM	#4
YENFU Account Disabled Join Date: Nov 2004 Location: Dallas	The CD-PRO2 Transport(I mean the DIYZONE Kit) have a specially designed control board.The control board will send the signal to the 'relay board',and control the power up sequence. By doing so,we could extend the life of CD-PRO2M module.You know,it's the most expensive part of the KIT.

11th January 2005, 06:28 PM	#5
Peter K diyAudio Member Join Date: Apr 2003 Location: Vlaardingen	Hi Zers, I did not implement any delay for the +9V in the powersupply (using CDPRO2). No problems at all. Used a LT317 for the 3 psu's (2 x 5V, 1 x 9V). I think the powersupply is quit slowly starting up and that the 5V is because of that quicker at its requested voltage than the 9V. I am not sure if this is the real reason that I am not experiencing any problems with powering the CDPRO2. Good luck, Peter K

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