Here’s a quick look at removing and disassembling the laser assembly from a Sony PS one. I’ve got one of those inexpensive replacement mechanisms here, and unfortunately it hasn’t exactly impressed me with its quality!

One problem I’ve noticed is the spindle hub. On some replacement assemblies, the motor shaft doesn’t seem to provide enough support for the hub to stay in position. In particularly bad cases, the hub can actually come away with the disc. Wonderful!

Fortunately, removing the optical pickup from the mechanism isn’t terribly complicated. There are a couple of screws to remove, along with a small plastic guide piece that holds the laser carriage in place.

Once that guide is free, the laser can be lifted out of the mechanism. Just be careful not to lose any of those little plastic parts, because you’ll need them when putting everything back together.

I also had a look at the possible anti-static solder connection on the replacement pickup. There are some solder points that may be associated with the protection used during shipping, although I couldn’t confidently identify them on this particular example.

The different PlayStation models also use several KSM-440 optical-drive variants, so don’t assume that every laser assembly will be a straightforward swap. Cable length, guide parts and the mechanical fit can differ between versions.

So there you go, a quick look inside the mechanism. With a little patience, you can remove the pickup and investigate the parts individually rather than replacing the entire drive every time.

Unfortunately, the spindle hubs on some of these replacements are still another story entirely!

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