This is used in a ton of models: CLD-D406, CLD-D504+, CLD-D604+, CLD-59, CLD-R7G, CLD-D925 and many more.
I had to tear one of these down to swap "Tilt Base (Under)" VNL1670. What frequently happens is the plastic that holds the back end of Side A rail will snap off the base. I never can get it glued back correctly (it is probably possible, but I'm not good with stuff like that). I ran out of functioning mechs to just swap in, so I had to just replace VNL1670 in the player I was repairing. This assumes you have already removed the mech via the four screws holding it to the chassis. Additionally you will need an oscilloscope to properly step through the adjustments after reassembly. If you do not have one, take a photo of Side A centering adjustment before attempting this.
Disconnect switchboard wiring from back right of side turn.
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Unscrew the two screws holding in the CD Plate and disconnect the spring.
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Disconnect the black spring and then the silver spring. Unscrew single screw holding in the switchboard and carefully bend back the plastic hooks holding it in.
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Disconnect this third spring. Below it, the white tilt cam must be turned via pulley with loading belt around it so that cam is flat against the black plastic piece. (The tilt cam in the photo needs to be turned to the right.)
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Unwind switchboard wiring and turn Side A centering "screw" so that the D shape has its curve side facing outwards. (Opposite as shown in photo.)
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The upper tilt base should now slide over so it can be lifted up.