I believe the Z travel is actuated by a voice coil underneath the lens. It need to be fast enough to track any warp or wobble in the disc as it spins. It has fairly limited travel, I recall some cd/dvd rw drives that had a hard time tracking discs when adhesive labels were applied.
One very interesting drive was one of the first DVD burners (or was it one of the first CD_RW drives) which had a unique solution to the normal reading LASER being unsuitable for writing. Use two LASERs, two lenses, two focusing systems etc. To enable each LASER to reach the innermost part of the discs the whole shebang was mounted on a tiny rotary table that could spin 180 degrees really fast.
Perhaps this guide can integrate the procedure for removing a stuck disc Many YLOD units die with a disc in the drive and some repair service providers charge extra to remove it. What's worse, sometimes it is not your disc! I was going to send it to Sony for my repair except that the disc inside is rented and needs to be extracted right away. The repair providers who charge extra implied to me that they charge extra because the drive needs a disc reinserted if it is going to work again when booted up in a working PS3 (something about rails that would fall without a disc holding them up). I believe that they throw in a blank CD/DVD or one of those clear plastic separator discs that come in recordable disc cake-boxes on the top and bottom of the stack.
There may be some variation between units, if your original disc drive didn't have a heat shield then I wouldn't worry. It doesn't appear that the unit in steps 1-9 from iFixit had one either. Thanks for the feedback, I'm glad the guide helped you fix your issue.
It is not recommended to replace just the laser unit. It is better to replace the drive chassis (metal part, including the rail and disc spindle motor) as an assembly because the height of the rails are calibrated in factory. Unscrewing the rail screws will change the alignment and you can't calibrate it.
This video contains instructions for disassembling the Blu-ray Disc drive in your PlayStation 3. If you've never attempted to take apart the Blu-ray drive, then you must watch this, or you may possibly damage your PS3 for good! See how to teardown the Blu-ray player, all the way down to the laser transport. This is very useful if you need to replace the drive and want to save about $70-$100.
Also, in part two of this series, see how to remove and replace the PS3 Blu-ray drive KES-400A lens from the KES-400AAA assembly. Word has come in that some lens units ship with packaging or tape over the lens. Be sure to check that the lens is free of tape or other protective packaging before putting your Blu-ray drive back together.
We've looked intensely at the outside of the redesigned PlayStation 3 ever since it was unveiled in Tokyo last month. Getting a look inside has proven unusually tougher, but French YouTube member K0st3yr has volunteered to do what few gamers dare and tear down Sony's updated console. As we've quickly learned, Sony hasn't chosen to radically rework the insides like Microsoft did with the slim Xbox 360. The Cell processor and its RSX graphics companion are still separate parts, and a similar power supply capacity suggests that neither of the main chips has been built on a more efficient manufacturing process. Instead, it's everything else that has been given the shuffle: a smaller Blu-ray drive and more clever overall construction appear to be the tickets to the 20 percent volume reduction compared to the last model. While the revealed internals might be disappointments to those who were hoping the PS3's possible sendoff would involve more of a bang than a whimper, they do hint that Sony might have breathing room if it wants to advance the design any further. Just have some popcorn and a grasp of French on hand if you'd like to have a peek at the three-part video dissection found after the break.
Update: Not to be outdone, iFixit has conducted its own teardown. There aren't any shockers in the mix beyond improved repairability, but you'll find many of the components given their exact names as well as more explanations of what's been changed to shrink the PS3 a second time.
If your PlayStation 3's (PS3) Blu-ray drive has been reassembled incorrectly or somehow something got misaligned, then this is one way to fix it. There also might be other problems with your Blu-ray player; if the lens that reads the disc is too dirty, the system will not be able to read the disc properly.
Wirecutter has been testing external optical drives since 2013, when they were quickly disappearing from most laptop computers. We also have decades of accumulated experience testing other kinds of storage, including USB flash drives and memory cards, external hard drives, internal and portable SSDs, and network-attached storage.
With those criteria in mind, we scoured retailers for the best-selling and top-rated optical drives, and we checked manufacturer websites for models released since our previous update. We ended up with four new models to test: the Asus ZenDrive U9M, the LG BP60NB10, and the Pioneer BDR-XD07B and BDR-XD07UHD. We also retested four picks from the previous version of this guide, since they were all still available for purchase.
We tested each DVD drive by burning an ISO file from a test DVD of video files. We used blank single-layer DVDs from Staples for this test. We then ripped video files from three different test DVDs to compare speeds. When testing Blu-ray drives, we performed the same DVD ripping and burning tests to test their speeds with DVDs. Then, we burned and ripped test video files using blank Verbatim BD-R discs and ripped video files from three additional test Blu-rays.
As we tested, we took note of how easy it was to insert and retrieve discs from each drive, and we paid attention to the noise each drive produced. We also noted the cables that each drive shipped with and what disc-burning software they included.
The LG GP70NS50 burned and ripped DVDs at about the same speeds as other drives we tested in 2017, but it currently costs more than our picks, and its silver paint scratched a few times in our travels.
In a previous round of testing, the Dell DW316 was notably slower at burning DVDs on Windows. If you were buying a Dell laptop and needed an external drive mostly for reading discs, this model would not be a bad add-on purchase, but you can do better otherwise.
In terms of technical features, little else has changed between the two models, iFixit noted. For example, the console teardown revealed that Sony stuck with many of the same chip manufacturers in the PS3 Slim that it worked with for the original model.
Historically, it's the presence of the mandatory hard drive that has been a major factor in the PS3's relatively high price up against its drive-less Xbox 360 competitor. Typically, HDDs don't tend to fall in price dramatically - capacity simply increases. On top of that, Sony's plans for cost-reductions were thwarted by a flooding disaster in Thailand which crippled drive production and doubled prices worldwide within weeks - to this day, hard drives are still significantly more expensive than they were prior to the crisis. The 12GB model addresses all of these issues: it replaces pricey mechanical drives with flash memory that, conversely, has seen prices plummet in the last couple of years.
Initially, it was believed that Sony had simply gained access to an inventory of small capacity SSDs and would ship them in the PS3's traditional hard drive bay, where it could be replaced with any other 2.5-inch hard drive, so perhaps the biggest surprise upon receiving our 12GB unit was the complete absence of anything in the expansion slot. On the one hand, this was good news - upgrading to a hard drive would be fast and painless. On the other, no SSD-type arrangement means Sony had integrated a simple flash module onto the motherboard - and, as anyone with experience of USB flash drives will know, read and write speeds vary massively from one chip to the next.
The question is, to what extent is the 12GB model a compromised version of the full-fat HDD-equipped models Is the flash storage fast enough to keep pace with a hard drive And, looking at things more positively, does the removal of any mechanical moving parts actually speed things up It's an interesting thought, because the potential is there for the bargain-basement PS3 to actually outperform its more expensive siblings.
Intrigued, we decided to find out more, and that meant facing off the 12GB model against the full range of its competitors: first up, the official 250GB hard drive upgrade, which we strongly suspect to be the exact same drive found in the entry-level US PlayStation 3. There's nothing really remarkable about this product in itself. It's a 7mm-high 2.5-inch Hitachi Z5K500-250 drive ready-installed into a mounting bracket, which slots right into the new PS3. The upgrade is undeniably rather expensive at 65 but there's nothing stopping you simply buying your own drive and purchasing the 10 mounting bracket separately. Or you can just stick the drive into the slot on its own with a dab of Blu-Tack and hope for the best, if you like to live life on the edge.
Our next test subject is the existing 500GB Super Slim, giving us a direct head-to-head comparison opportunity between the two major European SKUs. This model features the Hitachi Z5K500-500 drive, the more voluminous sibling of the upgrade unit. Rounding off our analysis, we go nuclear by utilising a 128GB SSD. The nature of the PS3's interface (not so much the older SATA-2 standard but more its lack of unbuffered read/writes) precludes utilising the full power of an SSD's read/write speeds, but you do get the benefit of instant access to every file on the silicon, offering a valuable advantage. In short, with our line-up we cover the length and breadth of Sony's official