The lens on your DVD player will need to be cleaned. DVDs are generally more difficult to read than CDs and if the laser is impeded by a dirty lens it is often the case that it can continue to read CDs but not manage to read DVDs.
There is a laser cleaning disk that you can purchase and run in your DVD player which often resolves this. See link for an example http://www.amazon.co.uk/Hama-DVD-Laser-Cleaning-Disc/dp/B00005UPDF
If this fails then there is a problem with the lens itself which will require service attention.
Hope this helps. Please remember to rate my answer.
The issue with attempting to realign the lens is that in your drive there are two levels of alignment for the laser assembly. The first level is the mechanical alignment but there is a lot more to it than that.
The fine focus of the laser assembly is servo controlled. The servo control circuits in the player use the signal from the laser to determine the precise track position. These servo circuits apply a positioning control input to small coils in the laser assembly which moves the laser assembly as required to precisely align the laser with the track.
Given for example that just 740 nanometers separate one track from the next and a nanometer is one billionth of a meter you can appreciate the difficulty here!
I can send you an 8GB overview of this if you fancy some bed time reading but I have to say the short answer to your question is no - for the average home user this procedure is a non starter.
Hope this helps.Hi
The issue with attempting to realign the lens is that in your drive there are two levels of alignment for the laser assembly. The first level is the mechanical alignment but there is a lot more to it than that.
The fine focus of the laser assembly is servo controlled. The servo control circuits in the player use the signal from the laser to determine the precise track position. These servo circuits apply a positioning control input to small coils in the laser assembly which moves the laser assembly as required to precisely align the laser with the track.
Given for example that just 740 nanometers separate one track from the next and a nanometer is one billionth of a meter you can appreciate the difficulty here!
I can send you an 8GB overview of this if you fancy some bed time reading but I have to say the short answer to your question is no - for the average home user this procedure is a non starter.
Answers & Comments
The lens on your DVD player will need to be cleaned. DVDs are generally more difficult to read than CDs and if the laser is impeded by a dirty lens it is often the case that it can continue to read CDs but not manage to read DVDs.
There is a laser cleaning disk that you can purchase and run in your DVD player which often resolves this. See link for an example
http://www.amazon.co.uk/Hama-DVD-Laser-Cleaning-Disc/dp/B00005UPDF
If this fails then there is a problem with the lens itself which will require service attention.
Hope this helps. Please remember to rate my answer.
Many Thanks.
Hi
The issue with attempting to realign the lens is that in your drive there are two levels of alignment for the laser assembly. The first level is the mechanical alignment but there is a lot more to it than that.
The fine focus of the laser assembly is servo controlled. The servo control circuits in the player use the signal from the laser to determine the precise track position. These servo circuits apply a positioning control input to small coils in the laser assembly which moves the laser assembly as required to precisely align the laser with the track.
Given for example that just 740 nanometers separate one track from the next and a nanometer is one billionth of a meter you can appreciate the difficulty here!
I can send you an 8GB overview of this if you fancy some bed time reading but I have to say the short answer to your question is no - for the average home user this procedure is a non starter.
Hope this helps.