I can confirm you theory. I’ve a Pioneer Multichanger with PWY-1009 laser. The laser lens was detached as always and… I’ve to find the best position to make it work. I use some B7000 silicon glue type and now it works great Oscilloscope confirm the perfect allignment with a beautiful RF signal 😊
Very informative video. I was unaware of aligning the lens. I've fixed loose lenses on two PD M435's, a 601 a 700 and a 710. I must have gotten lucky with alignment as all of them function correctly. It's almost 100% certain that every one I buy from ebay will have a loose lens by the time I receive it!
Dustin Messinger Thank You for watching, those lenses will work (for the most part) in another position but I had disc compatibility issues a few times and found that putting the lens back “exactly” as it was originally corrected the issue.
fixing a few of these right now...quick question: which way does the lens go into the recess? Narrow side into the recess or wide side into the recess?
Thx very good tutorial. I have 4350 model and thx god i get easily out that stabilizer off. But now my pain is clean and focus laser lens to right, music is not good hearing. So are you say u have to put epoxy clue on that lens??? Pls response quick
I used a parts unit to repair one. it plays but wont read the first minute of any of the six discs. all other tracks are playing well. also, are lenses from another pioneer player different? or say A nakamichi - where I saved the lens before tossing it. looks the same and it fits. - I have a difficult pd-m630 that I tried 3 lenses - neither worked (including the nak)
Thank you very much for this great video! One question at 20:30 you talk about the little spring on the laser drive carriage - I found mine loose in the bottom of my unit, managed to reassemble, but not sure what the spring arm tang is supposed to locate onto (nothing happens when the CD inserted), so thinking the laser drive motor is dodgy, or I’ve misassembled... can you describe how that spring fits in there? Yours looks like it’s upside down vs the assembly drawing. Once again, your video is very much appreciated - thank you!
Andy, I had just laid the spring in the tray at that point and I wasn’t sure how it was suppose to go but it’s a pain in the ass to get it set, I looked in my used parts supply to see if I had an old pioneer pickup like that one I could use as a reference but I don’t but I can get the one from the player in the video later next week and email you a picture if you want , it’s definitely easier to show you than try to explain it.
luvradios Hey thanks for your reply! Would very much appreciate that - you’re right, it looks like a royal pain in the arse. I’m wondering if the laser carriage won’t move at all if the spring is assembled incorrectly. I hate springs like these 😡
my email is allnewandy@hotmail.com - I hope I won’t get loads of crooked people trying to tell me they’re African princes with difficulty getting access to their millions now 😂
@@luvradios Hi , i encountered the same issue not long ago on an old PD-M610 player. I dissassembled the laser unit without noticing the spring before it was alredy out of the thing. I tried checking the assembly sheet but still can't quite understand how to install it back. is there any image link you know about that could help ? thanks in advance ^^
I have the same lens problem on my pioneer, but there's no visible glue on mine. I don't know what is the proper direction of the lens (up/down). I can see that one side of the lens has a smaller diameter then the other. Which side is sitting on the laser assembly?
The smaller side of that lens should have a lip on it that will fit into the laser , It should only fit in the laser body one way, the direction in which it should be placed is another story, that you may have to experiment with, if it doesn't work at first just rotate it around a little and try again, keep doing that till it works.
how did you reinstall the disc clamp/stabilizer? I removed mine to fix the lens and got it back in again, but it does not lift properly and jams the door when opening. I'm missing something as I put it back in once during the repair, but confused now as it is the only thing giving me problems to complete the repair. If I remove the rotating top disc clamp the mechanisms looks like to working, but when the clamp is installed its not lifted up enough to clear the base of the tray?
If you look at that clamping piece (the part that goes in the tabs on the left) there is a post on the bottom you will have to get lined up in a small opening on the chassis, there is an opening and small plastic slide plate you have to move into position and then put the post down in. If my description leaves you more confused just look close at the small post and where it goes and you be able to see what I’m struggling to describe lol
@@luvradios thanks, also where does the ball bearing go? in the rail slot or a hole/recess? the clamp was not being completely raised as the plastic track and metal track were misaligned. when I manually moved the plastic back it raised the clamp higher and tgetray holder lower which I think is my problem. Now I need to reinstall the tray, luckily I did not lose the ball bearing. Putting it back together and tried the bearing in a recess but it was too tight to slide. with the bearing in the front half of the slide it drops out wen the tray opens. Im guessing its in the back half of the slide, but there's also nothing to stop to coming out when the door closes? AM I missing something?
@@bljts the ball bearing does go in the rail for the tray but now I have to try and explain where lol. I think I recall it going underneath the metal rail in a small slot, this is why it falls out and gets lost when people remove the tray, look at that metal slide from the bottom and you should see a small place that BB will fit , use some grease to hold it there while you slide the tray back in, hopefully my memory isn’t fuzzy on the details here but I do recall the bearing needing to be held in place upside down while the tray is re-installed. If the unit was right in front of me I could show you in 2 mins but trying to explain it is not that easy lol.
@@luvradios Hi thanks your explanation helped and I got the tray back in with the ball bearing in the recess. I have had it in several times now trying to fix the disc clamp problem I created when I fixed the lens. What is happening is that the disc clamp does not lift up enough and catches the tray and the tray does not open. If I remove either the whole arm or just the magnetic round piece the tray works. Reading the service manual it says ti make sure the cd tray is completely down before you reinstall the tray. This is achieved by moving the plastic slider the the back of the rail. Still no luck as mentioned above. Interestingly the tray sometimes comes out too far and needs a little nudge to get the rack back on the draw gear mechanism. I've looked all around on line and found no other info on this problem with the disc stabilization clamp jamming the tray? I also do not see anything broken and all snap in pieces are properly in place on the clamp and the other arm (the one your glued to repair in your other video). The answer is probably staring me in the face but I can't see it.
Hi quick update, problem solved. The problem was that the clamping mechanism snaps back into place as you mention above, but there's a leg on the bottom of the part that goes into a hole at the same time as the top is snapped in. My problem was that even that I got the bottom leg into the hole it was not being located into a small recess on the underside spring lever. You can get the leg into the hole and snap the top parts into place, but the movement of the clamping device is restricted. There is only one way this fits together. What I did was to move the spring lever until I could see the recess where the leg needed to fit, held it in place with a screwdriver and then inserted the leg and snapped the top part in. Success!, the tray is working properly. Hope this information helps if anyone takes the clamping mechanism out as I did.
It’s most likely a timing issue with the stabilizer, on the left hand side the plastic post down on the bottom has to go in that sliding arm in the correct spot or it won’t work, remove the disc stabilizer and look at the left side and you’ll see the post I’m talking about and the you can tell where it goes down in the mechanism.
@@luvradios I have the post inserted into the square hole on the left side, seeps the be a spring that is pushing the the left attached to it. But it still doesn't open right
@@josephwalk1747 , did you take the tray completely out ? If so, there's a ball bearing that goes underneath on the left side, if that fell out then the tray wont open correctly.
@luvradios it's almost like the stabalizer isn't raising at all just the center part of the tray moves up and the tray tries to move out like it should but the lip on the centre piece is hitting the stabalizer and preventing it from moving.
Does anyone know the exact disc table height in mm? I can't find any information in the service manual, I looked at several models with this mechanism. I'm trying to fix PD-5050 which has several problems. The disc was scraping in the two front "plate levers" so i lifted the table, but now maybe it's too high. I don't get why is it touching these levers because they are raised and lowered normally when the disc tray open or closes. Anyway i find the design of these Pioneer CDs somehow too complicated and strange compared to other brands.
Mine works fine, but the only thing is when you hit the disk tray button, the tray comes out fully, then instantly goes back in, on its own. Not a big deal, but just annoying at times.
Danek, thanks for watching! Children of the Sun is one of my all time favorite party songs from my younger years, a true test of any stereo system’s power and clarity.
