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KES-400AAA Disasembly

This page shows the complete disassembly of the optical assembly out of a Sony PlayStation 3, p/n KES-400AAA. It is sitting on 1/4" graph paper for scale. I apologies for the odd lighting, my camera's flash does not work with macro shots.
For more information on how the optics work, and what to expect from the violet/UV laser diode, see Leslie Wright's page
I took these photos as I was working on extracting the 405nm/650nm/780nm laser diode module, which I wanted to use in my RGB laser as the blue laser, and some of the optics. The rest of the drive was of little value to me, the mechanical components are nice but far from useful and the electrical components were not worth salvaging.
Click for a larger image.

Top view of the assembly:
kes-400AAA

Remove the 4 stamped steel brackets, by removing 4 small screws.
kes-400AAA

Remove the 2 plastic brackets, by removing 2 small screws.
kes-400AAA

Carefully lift out the optical assembly.
kes-400AAA

Remove the tracking and spindle motors, by removing 5 screws.
kes-400AAA

The disassembly of the read head

Slide out the 2 rails from the head.
kes-400AAA

The plastic bumper can be be removed:
kes-400AAA

Flip the head over:
kes-400AAA

Remove the screw, and lift off the dust cover:
kes-400AAA

Flip it back over, remove the small clip:
kes-400AAA

And then the plastic guard:
kes-400AAA

Unscrew the tracking assembly, open the connector (the brown tab snaps up, and the cable slides out), and lift off:
kes-400AAA

Flip it over again:
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Unscrew the focusing motor:
kes-400AAA

Disassembly of the focusing motor

Remove the 2 small screws, and slide off the top:
kes-400AAA

You can then carefully unscrew the threaded ring, and slide the lens holder and spring out:
kes-400AAA

Unsolder the flex from the motor (carefully, the pins are not attached well to the windings) and unscrew the motor:
kes-400AAA

Press out the 2 metal rods:
kes-400AAA

The photodiode can now be removed (it is glued in):
kes-400AAA

And unsoldered:
kes-400AAA

back to the read head

Unscrew and remove the metal plates over the optics:
kes-400AAA

And remove the foam where the laser diode was:
kes-400AAA

The 2 cube beamsplitters can now be removed (use a plastic tool to avoid chipping them):
kes-400AAA

Next up are the sense optics:
kes-400AAA

And the diffraction gratings:
kes-400AAA

Out comes the LCD (sorry it is blurry):
kes-400AAA

And another focusing lens:
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Then the flip it over and pull off the window:
kes-400AAA

Now you can punch out the brass sleeves:
kes-400AAA

the tracking motor

Snap off the cover plate:
kes-400AAA

The bearing can now be removed:
kes-400AAA

And then screw/armature slides out:
kes-400AAA

Then the 1st plate can be removed:
kes-400AAA

Now the flex must be unsoldered:
kes-400AAA

And then the 2nd plate can be removed:
kes-400AAA

Which allows the 2nd coil to be removed:
kes-400AAA

Overall View:
kes-400AAA

Spindle

First the top cover must be removed:
kes-400AAA

Then the centering code can be lifted off:
kes-400AAA

The spring can now be lifted off:
kes-400AAA

There is a small screw that eventually needs to be removed:
kes-400AAA

The thrust disk can then be carefully pried off:
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The bearing must be forced out of the mounting plate:
kes-400AAA

The bearing can then also be pressed out of the motor windings:
kes-400AAA

Overall View:
kes-400AAA

Optics Deck

First snap off the 2 stainless steel clips:
kes-400AAA

The lens/coil assembly is soldered onto the frame at 2 points near the flex connector:
kes-400AAA

The tracking head:
kes-400AAA

First the 4 fine wires must be unsoldered:
kes-400AAA

They can then be pulled out of the frame:
kes-400AAA

PCB

The laser diode (which has 405nm, 650nm, and 780nm laser diodes as well as a power monitor photodiode in the same can):
kes-400AAA

Last the tracking photodiode arrays can be removed:
kes-400AAA

More Information

I can be contacted at contact@krazerlasers.com

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