AVS Forum banner
1 - 20 of 1027 Posts

·
Registered
Joined
·
85 Posts
Discussion Starter · #1 ·
A general thread for people to discuss general LaserDisc topics, especially maintenance and repair issues.
 

·
Registered
Joined
·
85 Posts
Discussion Starter · #2 ·
I have just got a 1993 Pioneer CLD-D702 and am thinking of replacing my CLD-D604 with it.


It's a couple years older, but has some cool features I like including a last frame freeze during side A/B flip.


Does anybody know what the difference is in the guts of the two beasts that might make the 604 better? All I can see is the 604 has Digital Coaxial output and an Attenuator. I'm not even sure what signal some out of the Digital Coax.


Smart People?
 

·
Registered
Joined
·
58 Posts
The 700 series is a significant step up from the 600 series. Assuming both machines are in equal shape, you should see a better picture from the 702. The chassis in the 604 is lighter duty, and not quite as rugged as the 702. However, the one significant advantage of the 604 is the AC3 output - though you'd need a demodulator to take advantage of it. I own a 704 and the Elite version of the 604 (CLD-59), and I can see the improvement in the picture on the 704. I suggest doing a comparison between the two and then make your decision, based on video and audio improvements.
 

·
Registered
Joined
·
85 Posts
Discussion Starter · #4 ·
Thanks denvertrakker. I can't believe I didn't spot that! I don't have an AC3 demodulator at the moment, so I think I will make the swap. I am happy with the quality of the picture I get from the 604, so I'm sure this will make the most noticeable difference.


I am also just running RCA audio out to my cheap home theater receiver/DVD combo, so any great improvement in audio will be lost on me.

Quote:
Originally Posted by denvertrakker /forum/post/19904649


the one significant advantage of the 604 is the AC3 output - though you'd need a demodulator to take advantage of it.
 

·
Premium Member
Joined
·
995 Posts
Actually the 704 is a step over the 702 in picture sharpness but both are a step over the 604. I've always considered the 704 the best bang for the buck with LD players though I personally prefer the CLD-97.


The only reason to use the optical output would be if your home theater combo had a better D/A conversion than the LD Player or if you had DTS 5.1 encoded LDs and wanted to get the 5.1 surround sound.


If the 702 is working good I'd use that over the 604. BTW, the 604 should be giving you a picture as you switch from A/B unless you turned that off, theater mode turns that off.
 

·
Registered
Joined
·
85 Posts
Discussion Starter · #6 ·

Quote:
Originally Posted by Kurtis Bahr /forum/post/19906302


If the 702 is working good I'd use that over the 604.

Well here we go. I put some videos up on YouTube of what this unit is doing [or not doing]:

http://www.youtube.com/watch?v=MPQ_YS53zxQ


http://www.youtube.com/watch?v=72irHwcfClc

http://www.youtube.com/watch?v=K1HwFbiDlnk

http://www.youtube.com/watch?v=W1myDIj7Ozk

http://www.youtube.com/watch?v=mtDFCe4yf1E


http://www.youtube.com/watch?v=_JuRNcBBiLI

http://www.youtube.com/watch?v=87wzfo0vOv8


I can see right about where the cycle is hanging up, I'm just not sure what things are called or why they are doing what they are[n't] doing.


Thanks for any tips!


Guy


p.s. I have a CLD-D501 that is doing the same thing with the drawer not opening. I have greased that one but it still sticks half way up the spindle lift
 

·
Premium Member
Joined
·
995 Posts
For the open issue the first thing I would do is with the top off and the door open I'd look inside underneath the drawer for the loading belt. Should be able to get to it with the drawer fully extended. Remove it and clean it, also clean the smaller pulley.


For the Side B issue the first thing to look at is the lubrication on the metal pin the pickup slides onto going into the turn mechanism. The back gear does the side change and then the side gear should hit the track and pull the pickup off the metal pin. Looks like it is not moving forward quick enough so the side B switch is not held locked as the pickup should easily grab the track to unload quickly leaving the turn mechanism fully up and locked. You or at an in between state. Powering off and back on causes the motors to force the pickup back to side A rest position.


Clean the load belt and see if there is some white grease in excess along the guide rail and put it on the turn mechanism pin. Also make sure it is aligned straight in line with the guide rail for normal playback.
 

·
Registered
Joined
·
85 Posts
Discussion Starter · #8 ·

Quote:
Originally Posted by Kurtis Bahr /forum/post/20057920


...look inside underneath the drawer for the loading belt.

Found the belt and cleaned it and the capstan. I also took the opportunity to disassemble the top spindle lifter and re-grease the rails and hinges. So i figured while I was at it, I might as well disassemble the drawer path and the slider that opens the door & gate.


After a thorough cleaning an re-greasing, the whole mechanism worked like a Swiss clock! Problem one solved.

Quote:
Originally Posted by Kurtis Bahr /forum/post/20057920


For the Side B issue... Clean the load belt and see if there is some white grease in excess along the guide rail and put it on the turn mechanism pin.

I saw that this system was fairly isolated so, I took the whole top rail out. I was super careful not to snap the three wires to the little blue A/B switch. I popped that module out and tore the Ferris wheel apart. cleaned and re-greased that and lightly re-greased the pickup guide rails.


Then I carefully started to reassemble the A/B carriage and promptly snapped off the three wires right at the solder points. [see attached] So now...


A: I don't know what order they were in


B: I don't think I even have a solder gun, let alone know how to use it on wire that small...


This project just keeps sharpening that learning curve! By the time I am done with this, I will probably have my electrician's license and an engineering degree!
 

·
Registered
Joined
·
6,604 Posts
Did you snap any pictures of that area before you started to work on the unit? Perhaps you have that area pf the player on a video that you will permit you to look at some stop action / slow motion?


I have a CLD-D703, but the internals to my unit look way different than your unit.
 

·
Registered
Joined
·
85 Posts
Discussion Starter · #10 ·

Quote:
Originally Posted by J_Palmer_Cass /forum/post/20063198


Did you snap any pictures of that area before you started to work on the unit?

Well, if I knew then what I know now... I did not document this part. I also cannot seem to get the ribbon cables on the flipper carriage to stay in. I fond the little slot on the bottom and the snap-in clamp. I'm afraid to pull or push too hard on anything
 

·
Premium Member
Joined
·
995 Posts

Quote:
Originally Posted by toyfreaks /forum/post/20063019


Found the belt and cleaned it and the capstan. I also took the opportunity to disassemble the top spindle lifter and re-grease the rails and hinges. So i figured while I was at it, I might as well disassemble the drawer path and the slider that opens the door & gate.


After a thorough cleaning an re-greasing, the whole mechanism worked like a Swiss clock! Problem one solved.




I saw that this system was fairly isolated so, I took the whole top rail out. I was super careful not to snap the three wires to the little blue A/B switch. I popped that module out and tore the Ferris wheel apart. cleaned and re-greased that and lightly re-greased the pickup guide rails.


Then I carefully started to reassemble the A/B carriage and promptly snapped off the three wires right at the solder points. [see attached] So now...


A: I don't know what order they were in


B: I don't think I even have a solder gun, let alone know how to use it on wire that small...


This project just keeps sharpening that learning curve! By the time I am done with this, I will probably have my electrician's license and an engineering degree!

This part is the A/B side switch to tell the electronics which side the pickup is on. For the ribbon cables I cannot remember that design 100% by memory but usually there are a couple tabs on the side and you pull out on both of those and it releases the locking bar. slide in the ribbon cable and then push both tabs back in.


Kurtis
 

·
Registered
Joined
·
85 Posts
Discussion Starter · #12 ·

Quote:
Originally Posted by J_Palmer_Cass /forum/post/20063198


Did you snap any pictures of that area before you started to work on the unit?

Yay! I took a chance that my photo of the broken wires showed their arrangement while attached.


I found a great A/V hacker video on how to solder tiny wires:

http://www.microflight.com/How-To-Solder


...although in this case, the wires are as tiny, probably only 7 strands, and the insulation was twice as thick as the diameter of the wire. I took a brand new razor blade and just rolled the wire against it. The jacket came off with a little tug.


I have to do some serious stress testing, but I think i rescued his unit.
 

·
Registered
Joined
·
85 Posts
Discussion Starter · #13 ·

Quote:
Originally Posted by Kurtis Bahr /forum/post/20063521


slide in the ribbon cable and then push both tabs back in.

I figured out how to snap open the pressure catch, but the white ribbon cable just would not stay in. I would set it in there, snap the deal closed and it would just pop out. I was reluctant to put too much pressure on it, but I finally just kept wiggling it until it just slipped another 5mm into the connector.
 

·
Registered
Joined
·
85 Posts
Discussion Starter · #14 ·
I found a non-working Pioneer LD-W1 on CraigsList. I was not enthusiastic about trying to dissect that beast, but I took a chance on it. I discovered a disc left in it, and the spindle rotater was crushing it. I was worried that even if I could get it out, the jam could have either broken gears or burnt out a motor ...especially cuz all the belts in this monster are toothed synthetic ones, driving geared wheels.


After some minor outpatient surgery, I was able to get the disc out through the rear. Amazingly, the drawers were still synchronized and operated normally including the drawer change function. I was stoked!


At first, the player would only play Side A and then reset to standby mode when selecting any other side. After I manually rotated the optics assembly a couple times, it finally made the transition from Side A to B. Even better, at the end of Side B, it successfully switched discs and played Side C without any help. From there, the C
flip is just a repetition of the A:B.
 

·
Registered
Joined
·
85 Posts
Discussion Starter · #16 ·
Quote:
Originally Posted by Axatax
Do these things have a single pickup for both discs, or two?
There is just one pickup assembly on a full-width rack that flips over while the disc is retracted from the play space. I will post some videos of it later.
 

·
Registered
Joined
·
85 Posts
Discussion Starter · #17 ·

·
Registered
Joined
·
518 Posts

·
Registered
Joined
·
85 Posts
Discussion Starter · #19 ·

Quote:
Originally Posted by SaxCatz /forum/post/20126247


A nice player...

However, the side change really does take a shockingly long time.

Yeah, 30 seconds exactly. Oddly, it doesn't take any longer to swap discs than it does to change sides.
 

·
Banned
Joined
·
514 Posts
Quote:
Originally Posted by toyfreaks
I have just got a 1993 Pioneer CLD-D702 and am thinking of replacing my CLD-D604 with it.


It's a couple years older, but has some cool features I like including a last frame freeze during side A/B flip.


Does anybody know what the difference is in the guts of the two beasts that might make the 604 better? All I can see is the 604 has Digital Coaxial output and an Attenuator. I'm not even sure what signal some out of the Digital Coax.


Smart People?
The CLD-D604 is a one touch karaoke player with a digital optical audio output NOT a coaxial digital output. It also has an AC-3 RF output and 1-bit DA converter/8-bit digital memory for special effects and a three line comb filter. Check:
http://www.laserdiscarchive.co.uk/la...r_cldd-604.htm
 
1 - 20 of 1027 Posts
Top