The adjustment point seems to be glued and there are no visible screws.
https://www.flickr.com/photos/148908200 ... ed-public/

I have another video but I need to wait for Flickr to process it. I know for certain that it would play side B when I first got it and I cannot shake the feeling this is my fault from when I realigned the disc tray. I’m thinking the top while rail piece is out of alignment.

I hope C++ or Kurtis will chime in on this.

I believe you are missing the screw thus alignment is not able to be done.

That yellow is like thread locker but there is also a screw from what I remember doing.
I hope others can show you a picture or something to help.

Yes it is glued in place. I wouldn't break the locking compound unless you have double checked everything else, especially since you said it would play Side B previously. The optical pickup is trying to focus on the disc after it changes to Side B, correct?


The side B centering screws are from the later models. These units require the special "L-shaped eccentric screwdriver" GGV-129. The CLD-Dx03 units were the first that didn't require it as far as I know.

Yes, the laser goes up and then down to try to focus on the disc. It then sticks all the way o it and travels down the length of the disc. The disc never spins up at all.

I want to say you can run acetone over to make the glue work again, or nail polish to "glue" it again.

Grasshopper told me but I can't remember, its been a while when I adjusted my 3070.
Thx for posting the pic to clarify, again its been about 6 or so years since I opened my 3070.

Yeah I use nail polish to lock any adjustment screws I touch.

rcracer809 can you post a video of the side change taken from the side and top?

There is a video from the top if you check my Flickr. I will see if I have time to take one from the side.

I can't tell if the optical pickup is trying to focus. The video shows the pickup assembly raising and lowering via the height servo, not the raising and lowering of the lens that can only be observed from the side.

There are a couple stops on each side to limit how much you can move the centering side to side. I usually pus a flat blade screwdriver between the stop and the tab to slide it one way and the other stop and tab to slide it the other. I agree that if you didn't change the side A centering you shouldn't need to change this but if you did change side A centering you have to readjust side B.

Thank you!

I'm not entirely sure what both of you mean. I will post another video soon but I am having trouble understanding what you guys are suggesting; I'm still quite new to LaserDisc in general.

@cplusplus I just found a video of a 3070 with the same mechanism, the disc starts spinning BEFORE the laser tries to focus. I am worried that there is a problem with the motor now since it looks like it should start spinning in reverse first.
https://www.youtube.com/watch?v=7Y7nz63 ... e=youtu.be

This part is cut off on the CLD-3070 service guide, but here are the first steps:

Spindle is checked to ensure it is stopped.
Side B is then clamped.
Spindle starts rotating.

I don't see side B being clamped in your video.

Do you know how the player knows when the spindle has stopped? I'm going to take a look in an hour or so to see what's going on down by the spindle motor. Could it be that a sensor is not sensing the disc has stopped? I don't totally understand what you mean by "Side B is then clamped", other videos show it staying in the same position the whole time.

Yeah there should be a sensor by the spindle, but I wouldn't think this is the issue if side A works. In the 3070 video you linked, 1:16-1:17 shows side B clamping.

I'm thinking the belt is slipping or there is something wrong with the loading motor, but I'm not too sure.

I am looking at it right now and it does indeed clamp tighter as the laser makes its way around the turntable. I will continle to look at th emotor assembly.

The clamps tightens during the turn to make sure the disc has stopped completely before loosening to the normal position and spinning in reverse direction for side b as normal operation. Does the same when going from side b to side a.

You need to verify side a and side b centering before messing with other stuff.

The adventure continues...

I was surprise-gifted a working 3070 by coincidence. While observing it, I noticed the ring attached to the clamp was much, much tighter than the one on the broken 2070. Once I put the stupid ribbon cable back into place (it is too loose and keeps popping out), I will try to get the clamp ring tighter. Poking around the 3070 I notice that the screen also changes when it reads side B in that the chapter display switches sides. My 2070 does not.

The reason for that is the "digital field memory" circuit capturing an image just before the side change so you don't see just a blue or green screen during the switchover.

In addition, you probably already noticed that you can now do still frame, slow mo, and now attain a smooth picture scan on CLV discs thanks to that circuit which is the main reason these players cost so much more back in the day. And they are definitely well worth it .