CD player not recognising CDs

seamaster · 23rd August 2009, 19:18

My rover 75 cd player will sometimes play a cd with no problems...but then it will not play the same cd again and the pannel states that it is not recognised...can anyone help please?
Thank you!

Devilish · 24th August 2009, 00:35

I would guess it is the laser lense, or it is not spinning up due to a motor fault, but there are a number of other causes. You could try a lense cleaning cd as the lense is upward facing and may have picked up something. However this rarely works and I doubt very much if it will as it is intermittent, indicating something is on the verge of complete failure. I doubt if yu would be able to get the parts that may be expensive if you could. If it is OEM you may find replacement is the only option

I am assuming that the CD is not marked, and it does the same with all your CD's and none of them are marked

James.uk · 24th August 2009, 00:45

I had the same problem very recently!

But -- I cleaned all the discs, and checked that all the drawers work quite freely today, and so far, *touches wood* it is now working ok again..
.

Rob75 · 24th August 2009, 01:09

I used to have the same problem on mine, i cleaned all the cd's and took appart the changer and greased every moving part. I never had anymore problems right up untill the day i sold her.

Alough i think the problem was more to do with dirt on the cd's, i just went overkill by stripping the changer to it's component parts!

Devilish · 24th August 2009, 12:29

A CD player will spin up and check the disc for errors before it attempts to play it, so all it needs is a tiny flaw anywhere on the disc. In certain lighting conditions (such as incandescent and flourescent), marks that may prevent a player from recognising a disc can be difficult to see. It may look shiny and mirror like, even though it is covered in scratches.

I would sugest making a copy of a CD that will not play (if it is duff the reader may not read it to copy it), or burn some WAV files to a CD to test the player. Or buy a new CD and play it a few times.

seamaster · 27th August 2009, 07:09

Thanks to everyone who took the time to reply! I will try these tips!

Departed · 29th August 2009, 12:21

Quote:

Originally Posted by Devilish

A CD player will spin up and check the disc for errors before it attempts to play it, so all it needs is a tiny flaw anywhere on the disc. In certain lighting conditions (such as incandescent and flourescent), marks that may prevent a player from recognising a disc can be difficult to see. It may look shiny and mirror like, even though it is covered in scratches.

I would sugest making a copy of a CD that will not play (if it is duff the reader may not read it to copy it), or burn some WAV files to a CD to test the player. Or buy a new CD and play it a few times.

It won't check the whole disc for errors. It would take too long.

They spin the disc up and check the lead in and TOC, to prove that the laser can focus and track on the disc. The lead in contains the track listing info, so if it can't read that, you will struggle.

If there is damage in this area, and it is borderline, once the disc has started it will play all through (assuming no other errors) but may fail next time it tries to read the TOC.

This is the centre of the disc (they start in the middle unlike Vinyl for those who remember LPs) so check this for scratches or dirt.

BigRuss · 29th August 2009, 14:44

Fairly common problem with the CD changer is that the load mechanism of the CD's sticks, and will not allow the discs to be loaded far enough to be checked.

Solution is to remove the autochanger and take the top off the case. clean and re-grease the load mechanism, temporarily refit the plug to check for correct operation, then re-assemble and refit.

Sticking in a lens cleaner won't harm either.

Russ

23rd August 2009, 19:18	#1
seamaster Newbie rover 75 diesel saloon Join Date: Jan 2009 Location: Warrington Posts: 26 Thanks: 0 Thanked 0 Times in 0 Posts	CD player not recognising CDs My rover 75 cd player will sometimes play a cd with no problems...but then it will not play the same cd again and the pannel states that it is not recognised...can anyone help please? Thank you!

24th August 2009, 00:35	#2
Devilish Been round the block 75 Tourer Join Date: Apr 2009 Location: Cannock Posts: 4,125 Thanks: 3 Thanked 189 Times in 121 Posts	I would guess it is the laser lense, or it is not spinning up due to a motor fault, but there are a number of other causes. You could try a lense cleaning cd as the lense is upward facing and may have picked up something. However this rarely works and I doubt very much if it will as it is intermittent, indicating something is on the verge of complete failure. I doubt if yu would be able to get the parts that may be expensive if you could. If it is OEM you may find replacement is the only option I am assuming that the CD is not marked, and it does the same with all your CD's and none of them are marked __________________ If at first you don't succeed, hide the evidence Last edited by Devilish; 24th August 2009 at 00:37..

24th August 2009, 01:09	#4
Rob75 Gets stuck in Jaguar Join Date: May 2008 Location: wellington, somerset Posts: 905 Thanks: 0 Thanked 0 Times in 0 Posts	I used to have the same problem on mine, i cleaned all the cd's and took appart the changer and greased every moving part. I never had anymore problems right up untill the day i sold her. Alough i think the problem was more to do with dirt on the cd's, i just went overkill by stripping the changer to it's component parts! __________________ [SIGPIC][/SIGPIC]

24th August 2009, 12:29	#5
Devilish Been round the block 75 Tourer Join Date: Apr 2009 Location: Cannock Posts: 4,125 Thanks: 3 Thanked 189 Times in 121 Posts	A CD player will spin up and check the disc for errors before it attempts to play it, so all it needs is a tiny flaw anywhere on the disc. In certain lighting conditions (such as incandescent and flourescent), marks that may prevent a player from recognising a disc can be difficult to see. It may look shiny and mirror like, even though it is covered in scratches. I would sugest making a copy of a CD that will not play (if it is duff the reader may not read it to copy it), or burn some WAV files to a CD to test the player. Or buy a new CD and play it a few times. __________________ If at first you don't succeed, hide the evidence

27th August 2009, 07:09	#6
seamaster Newbie rover 75 diesel saloon Join Date: Jan 2009 Location: Warrington Posts: 26 Thanks: 0 Thanked 0 Times in 0 Posts	Thank You guys Thanks to everyone who took the time to reply! I will try these tips!

24th August 2009, 00:45	#3
James.uk Passed Away 2002 Pale Blue. Rover 75 CDTi Connoisseur auto. 170K miles Join Date: Dec 2008 Location: Near the M67. Posts: 14,509 Thanks: 199 Thanked 585 Times in 397 Posts	I had the same problem very recently! But -- I cleaned all the discs, and checked that all the drawers work quite freely today, and so far, touches wood it is now working ok again.. .

29th August 2009, 14:44	#8
BigRuss Premium Trader 75 CDT Tourer,2.5 Launch Saloon, Omipro MG/Rover (T4) Join Date: Jul 2007 Location: Liversedge, West Yorkshire Posts: 5,405 Thanks: 1,105 Thanked 1,340 Times in 661 Posts	Fairly common problem with the CD changer is that the load mechanism of the CD's sticks, and will not allow the discs to be loaded far enough to be checked. Solution is to remove the autochanger and take the top off the case. clean and re-grease the load mechanism, temporarily refit the plug to check for correct operation, then re-assemble and refit. Sticking in a lens cleaner won't harm either. Russ __________________ Replacement Key Service http://https://the75andztclub.co.uk/...d.php?t=244732 Full T4 Testbook diagnostics available. Diesel ECU repair and replacement. Options enabled or disabled as required. Diesel X-Power 135 and 160bhp, Rover 1.8T 150 to 160 MG 160 V6 to 177 upgrades available P.M. for details.