18-09-2003
| #1 | |
| CD Freaks Member Join Date: Jun 2003
Posts: 201
| How do I check if my lens is dirty? I've been having problems with my LiteOn-40125S. It is producing medium errors and fixation errors at all speeds. I have tested the problem with different CD-Rs including Memorex CD-Rs, and have consistently made over a dozen coasters in total. I think the problem may be the drive itself. To be honest, I've never had media problems with the media I use, and never as consistently as I am getting now. Instead of a coaster being the exception to the norm, now a good burnt CD is the exception. How do I check that my CD drive is dirty or (worse) the laser has been decalibrated? I've attached my Nero log file below for a failed session for you to see. Note: Search function did not turn up any posts which mentioned how to identify a dirty/decalibrated lens, although the solutions to the problems were posted. Quote:
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19-09-2003
| #2 |
| CD Freaks Member Join Date: Jun 2003
Posts: 201
| *Bump* Come on man, put yourself in my place, a CDFreak with a non-operational drive  Then you can see how unpleasant it is. |
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19-09-2003
| #3 | |
| CD Freaks Member Join Date: Jun 2003
Posts: 201
| Here's another error log from Nero, this time the error is "Invalid Write State". There goes another coaster. This problem recurs on 3 different types of CD-R media, and 4 different types of CD-RW media. Quote:
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19-09-2003
| #4 |
| Management  Join Date: Jul 1999 Location: Myce HQ
Posts: 11,307
| Hi Tyro, that doesn't sound like much fun indeed  Is there an option for you to get yourself a lens cleaning kit? Will probably be usefull for other CD players/recorders as well for now and in the future. As your drive is a Lite-On, I'll move it to the Lite-On forum, there are all the experts hanging out
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20-09-2003
| #5 |
| CD Freaks Member Join Date: Jun 2003
Posts: 201
| I was eyeing this cleaning kit from Belkin: CD Cleaner Is it OK? Before I spend the money, does anyone know if the problem is a dirty drive or a decalibrated laser? Also, I tried opening up my (internal) LiteOn drive to clean out the dust manually, since I figured if it is dust then cleaning the lens will be a temporary fix. Sort of like vacuuming a small spot in a dirty room; the spot will get dirty again quickly. I got as far as removing the outer casing, but can't seem to completely disassemble the drive. Anyone have any instructions on how to do so? |
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20-09-2003
| #6 |
| Retired Moderator Join Date: Jun 2002 Location: Deadwood
Posts: 11,533
| The cleaners are just brushes, you can do the same thing with a can of air and a brush. I don't think i'd spend any money to fix it though, a new 52x drive is pretty cheap even in Europe. The 40x is a good solid performer, but is nothing compared to the newer drives. Just to rule out software issues, try booting to the drive or reading a disc in DOS. Does it read discs in Windows? |
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20-09-2003
| #7 |
| CD Freaks Member Join Date: Jun 2003
Posts: 201
| The drive seems to be alright reading discs. If I copy or install a program from a CD using the drive, what happens is that usually somewhere through the file copy process, the CD stops spinning, the light flashes for a few seconds, the CD re-spins up and it continues. Reading seems to be less of a problem, presumably because if the drive screws up the error check it can always try to re-read the data (which is what I am presuming the above to be doing). But for burning, it only has one shot. As for blasting the lens with compressed air/a brush, that is why I asked how to open the drive in my question above. It is an internal drive, and disassembling it does not seem so straightforward. I'm holding back buying a new drive because I want to get a DVD-RW drive, and I am waiting for its prices to come down a bit more. Maybe after Christmas. |
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20-09-2003
| #8 |
| Retired Senior Admin  Join Date: Dec 2001 Location: Cdfreaks review lab - Norway
Posts: 5,644
| Hi and welcome to our forum! Some things you may try. -Update to the latest ZS0R firmware -Try other media brands as Multi Media Masters & Machinary SA media is quite shitty. Try some Verbatim or TY discs if possible. -Update nero to a newer version.
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21-09-2003
| #9 |
| CD Freaks Member Join Date: Jun 2003
Posts: 201
| Thanks for the welcome, OC-Freak. The MMM&MSA 74 min media was some leftover cheap stuff I had which I use for discs which I expect to be handled a lot or badly, like for Play CDs. I seem to have posted 2 MMM&MSA media types...which gives you admittedly a poor sample. Does Memorex media count as shitty as well? I had similar problems, although this time it happened with CloneCD and I didn't save the output. Also had a few problems with Intenso 700Mb 4-10x speed CD-RWs. Anyone here have any step-by-step instructions how to disassemble a LiteOn-40125 drive? I'm past the warranty period anyway. If I did a writing test on a CD-RW and output the information here, would you experts be able to tell me conclusively if it is because of a dirty lens, decalibrated laser, or a coincidental string of bad CDs? |
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21-09-2003
| #10 | |
| Retired Moderator Join Date: Jun 2002 Location: Deadwood
Posts: 11,533
| Quote:
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21-09-2003
| #11 |
| Retired Senior Admin Join Date: Dec 2001 Location: Cdfreaks review lab - Norway
Posts: 5,644
| Much Memorex discs is made by prodisc which is varying from perfect to total crap from batch to batch. You may have got unlucky and got discs from a bad batch. I suggest you try some other discs.....¨ Have you tried lower writing speeds btw?
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