Omega Owners Forum

Omega Help Area => Omega Electrical and Audio Help => Topic started by: Khaine31 on 09 February 2012, 20:36:44

Title: New CD Laser
Post by: Khaine31 on 09 February 2012, 20:36:44
I just wanted to know that if you keep playing copied cd's in the multi disc changer or use the copied sat nav discs, I heared that the laser can get worn and not work anymore. 

Is it possible to remove the whole unit and have another laser (optical reader) put in?
Title: Re: New CD Laser
Post by: blackviper90210 on 09 February 2012, 20:43:14
PM DaveDND on here. He's your man if you need to know anything audio wise :y
Title: Re: New CD Laser
Post by: RobG on 09 February 2012, 20:49:27
I just wanted to know that if you keep playing copied cd's in the multi disc changer or use the copied sat nav discs, I heared that the laser can get worn and not work anymore. 

Is it possible to remove the whole unit and have another laser (optical reader) put in?
Laser for the satnav is obtainable from Germany. Multi-disc will need a replacement CDC3 from a CCR2006, NCDC2013/5 or CCR600
Title: Re: New CD Laser
Post by: Khaine31 on 09 February 2012, 22:22:31
Whats a cdc3.  I have the siemens 2013 with the colour screen if that helps. Do you mean get another system all together.
Title: Re: New CD Laser
Post by: RobG on 09 February 2012, 22:54:57
Whats a cdc3.  I have the siemens 2013 with the colour screen if that helps. Do you mean get another system all together.
CDC3 is the laser drive unit for the 4-disc cartridge
http://www.omegaowners.com/forum/index.php?topic=90608.0
Title: Re: New CD Laser
Post by: TheBoy on 10 February 2012, 08:30:11
If you want to play CDRs, replace the system entirely.

Unfortuantely, on the Elite, that means replacing HU, screen, amp and speakers.  There is no halfway house.
Title: Re: New CD Laser
Post by: Dave DND on 10 February 2012, 08:48:30
Quote
I just wanted to know that if you keep playing copied cd's in the multi disc changer or use the copied sat nav discs, I heared that the laser can get worn and not work anymore. 



Have a read of this

http://www.omegaowners.com/forum/index.php?topic=90496.0

 ;)
Title: Re: New CD Laser
Post by: Marks DTM Calib on 10 February 2012, 11:57:19
The key reason they wont play recorded discs is not pit size its actualy down to the control system used.

If you consider a burnt disc, THE major difference is the reflectance of the material (with recorded media being considerably lower than that of 'printed').

The control system works being monitoring the eye shape from the PIN diode and varying the focus to optimise it.

When the eye shape is smaller due to poorer reflectance, the decision threshold in the control circuit has to be dynamicaly adjusted and some control systems are not designed to handle this.

The result is a focusing setup that will hunt more on burnt discs and hence this shortens the life.
Title: Re: New CD Laser
Post by: Dave DND on 10 February 2012, 12:17:22
The key reason they wont play recorded discs is not pit size its actualy down to the control system used.

If you consider a burnt disc, THE major difference is the reflectance of the material (with recorded media being considerably lower than that of 'printed').

The control system works being monitoring the eye shape from the PIN diode and varying the focus to optimise it.

When the eye shape is smaller due to poorer reflectance, the decision threshold in the control circuit has to be dynamicaly adjusted and some control systems are not designed to handle this.

The result is a focusing setup that will hunt more on burnt discs and hence this shortens the life.

Whilst there are actually many technical reasons as to the differences, many people appear to struggle to comprehend the reflectivity reasons, but most seem to understand pit sizes and this description has been used with more success to describe the difference in laymans terms than any other. THE main difference though is that genuine discs are pressed and have a sharper "edge" for the laser to read, but even that is not accepted by joe public. The bottom line is to stop people from putting non compatable discs into a CD player - the technicalities are actually immaterial.

Quote
The result is a focusing setup that will hunt more on burnt discs and hence this shortens the life

Yep, but YOU try to find a better explanation that the general public will accept without a constant barrage of further explanations.

 ;)
Title: Re: New CD Laser
Post by: Marks DTM Calib on 10 February 2012, 12:32:48
Ah yes but, me being a design engineer..........i need facts  ;D
Title: Re: New CD Laser
Post by: Dave DND on 10 February 2012, 12:48:15
Ah yes but, me being a design engineer..........i need facts  ;D

But me being on the end of the phone . . . . I need Fiction   :P
Title: Re: New CD Laser
Post by: TheBoy on 10 February 2012, 13:51:28
But the end result still remains a shagged CD Player, whether you understand the fact or the fiction ;D