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- เผยแพร่เมื่อ 11 ม.ค. 2015
- Marantz CD players with the Digital Servo Driver sometimes can't read CD's after some time of use. Often then it is thought that the laser output is too low but this is not always the case. Check for focus error gain like instructed in the video. For the CD67 I placed a 47k resistor across R112 to increase focus gain. Might also work for other players with the CDM12.1 or VAM1202 transport. Good luck.
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I used a 100K ohm resistor piggybacked on R112 and it now works a treat.
Your post has proved to be very helpful 👍
Great sounding CD player that one 👌
Thank you for this video! It gave me an idea that helped me to solve another problem.
Yes, your fix works! Got a lot of headache after replacement of the original Philips CDM 12.1/15 laser module with a new VAM 1201/1202 in my old Marantz CD67SE. The video describes exactly the focus error symptoms and i soldered the 47k resistor paralell to R112 - problem solved! Thanks a lot for sharing your experience!
If the player gives the "no disc" error, several things could be wrong. You could try to clean the lens first or try another disc. In my case there was a servo problem. The disc would read correctly if I pressed the disc downwards a little. What I did to repair is in the video description.
For all the beginners out there...it's a really great idea to be sticking your fingers and components into a live circuit. It has the potential really brighten up your day!
youd need mains theres resisthörrce all över the pläyce. pössibblie more danger with laser ^ ^
🤣
These CD players use low voltage, so no real issue of being getting a nice shock.
Unlike old fashioned TV that had high voltage.
Been repairing stuff over 50 years. Starting with tube amplifiers.
@@williamwong5627
So you're telling me that there's no high voltage in there? You go ahead and do you, but you'll eventually find it.
Thanks a lot. Following your instructions I solved the problem. Thanks again.
Thank you for the tip. In my Marantz 67 the focus error insist. I tried 47K and 4,7K resistor and even clean the lens but the focus error remains. What
else could I try? Please help!!!
I purchased 2 Marantz CD5001 cd players for cheap so I could see if I could get them both working. They both have the same problem spinning a few times then it stops and says "No disc". I cleaned both lasers and even purchased a new laser pickup mechanism and it's still the same problem. I tried holding the play button and pushing down the disc to make it spin but it still doesn't work. I found R112 on the PCB, but I would assume that just because it says R112 on my Marantz cd5001, doesn't mean that it's the same as the one in the video? Or are all of the R112 on Marantz PCB are the same for the focus gain?
My panasonic hifi dvd player also does not work, my type cd tray is vertically has not been fixed yet. I'm not sure it's complicated or not if I fix it.
Do you know the resistor ID for a CD6003 player? (Presuming the circuit is similar)
How do you know where the focal gain circuitry is? And how do you know where to put the resistor?
Sir sir please explain what component you replaced on therr???
The manual has nothing on cd disk error when recording/burning a disk. No matter what mode its in (track or disk) Even with record manual i keep getting disk read error on my marantz 631 with brand new cds in differnt brands. Is there anyway to fix it? Thanks!
Thank you for this excellent video, I have a Marantz DR6000 which I bought recently, it's fine when cool but after some time I get a loud crack / distortion through the speakers even though the unit continues to play normally, also if warm I will sometimes get a no disc error with the drive spinning, if you eject the tray the disc is still spinning any suggestions as a starting point please?
If problems come after some playing time it could be a worn out laser. First try cleaning the lens top and bottom. It is easy to find replacement transports.
That’s for sharing your information 👍
HiVery interesting.I have the Marantz CD63SE and KI signature versions.Is this issue with commercial CD's as well or just self recorded ones?The reason I ask is I have found certain makes of CD-R's won't play in the Marantz especially my KI Signature one.The SE seems more tolerant but still occasionally struggles with the first two or three tracks.Verbatim ones are pretty successful in the SE but still stop midway in the KI.Maxell ones play nearly fine, but the odd issues if replaying in the SE with the first two tracks and won't play at all in the KI.Both play commercial Cd's superbly with no issues.Would this be a focus issue in the KI as I've cleaned the lenses on both re greased the sled tracks and cleaned the end switches too.Or is the Ki signature so refined it only wants commercial discs to play.Thanks.......................
If something not optimal it first shows with CD-R's. A commercial CD has pits which a better to distinguish. Sometimes a very fine dust layer builds up at the backside of the lens and on mirror. I made a video for cleaning the back side of the lens and can upload if interested. Looking at your symptoms I won't guess it is a focus issue. Re-greasing the sled tracks is always a good practice but only solves skipping problems. Refinement in the KI version should not make for a poorer transport. I would clean the lens. Inspection of bad solder joints on PCB's won't harm either. If this does not help to replace transport. I found that the non genuine units you find anywhere just work fine.
I have a Phillips AZ3300/37.I pressed the power switch and heard a snap like a small firecracker. Now the display says "no read and the disc does NOT spin at any time. The radio still works. It uses one of the standard laser modules for around $20. When first started the laser does move up and down trying to focus. Any thoughts??
Thaank you! the unit is pristine from Aug. 2003
Try to find out what has snapped, either electrical or mechanical.
thanks for the movie. however, I have a marantz CD player but mine I can hear like an "clac clac" noise. I dissemble it and I found out the sound is coming from the lenses which don't stop moving... is it possible to repair it? or should I buy a new CD player tray with the same reference? I hope you can help me
Which model player you have? With the No disc error you first hear clac clac and this can have many different causes. The sound comes from the lens trying and retrying to focus. If no success in focusing the CD won't even spin and an error message is shown. Another transport might solve the problem. Mine had a focus offset problem. If this is also in your case you will see the disc gets spinning when you press down the disc a tiny bit towards the laser lens. Focus gain/offset etc are set in the digital servo controllers so no easy access. But you can still correct by changing one resister like instructed in the video.
+japcast +japcast thank you for your reply. The model is a CD-67SE and the clac clac sound is present even without a cd... as soon as I turn it on the lens goes back and forward in the rails going the clac sound. I have been searching on the internet and some say that the rail needs to be greased so the lens travel smoothly... do you think this will solve the problem?
Checked mine, when powering on i hear a very soft ticking sound (with cover on). When your hear a strong clac maybe the gears of the sledge are skipping. There is an endswitch for the sledge. If the endswitch doesn't work the gears will skip, producing a stronger noise. Can you confirm the laser lights up when it is focusing? If you have a scope it is advisable to measure HF output prom pick up. During focusing you'll have to see a S-curve. During play you'll see the eye pattern.
+japcast in my case, when the cd player is on, it is always doing the clac clac noise and the laser goes non-stop frenetically back and forward in the rails... I don't know why this is happening... I am truly planning to replace the whole drive for a new equal Philips CDM new CD laser unit...
Goldmember is that you? This is your Faja.
would this work for marantz cc870u 100 disc player?
At the bottom of the lens there is an optical ic , so may tell me little bit about that ic or its datasheet.
Maybe in the datasheet of VAM1202 you could find some data on the diodes.
Thanks very much 😊
I'll run the hubble now!
I have the same problem. I understand that you fixed the probleb, but I
didn't understand how! What you put on the board and where exactly?
47K resistor across the R112 Resistor - that would cut the resistance by "X" amount lowering the resistance.
The first and the best thing you could is to clean the lens.... if THIS doesn't work it could be difficult.
u r really smart
I had this problem for serveral years, but it was progressive. At the end, all CDs displayed the "no disc" message. Before trying the resistor trick, i just cleaned the lense with a computer air spray, and it solved my problem...
If it could help someone else...
ive seen people saying blowing air hard on the lens solve the issue...
How about the CD-63 mk2 ?
What is the values of the resistor used?
onto which resistor should I attach?
For the CD67, I placed a 47k resistor across R112 to increase focus gain. It is a specific case that might deviate from yours.
Hi, Mikemaxcel, Have you fixed the problem since?
i had the same problem with the Marantz cd-67 II.
the 47K did't work for me but soldering a 4,7K resistor did the job.
thanks for explaining it in your video!
Yes I just watched and read all this and went to CD player which I could not get to read any of three different disc makes- blew hard into aperture 3 times and bingo--it now works fine!!!
Can you solder it in ?
Presuming it's 100 ohm resistor ?
its very good thank you for sharing
I have cd5001 and a problem with spinning a cd. Cd is spins and than stops. 6 times. Than no disc error on display. Can you give me an advice to repair my player?
Clean the optical pickup
Wat voor weerstand gebruik je?Soldeer je die later ook vast? Of wissel je deze weerstand met de originele om?
Over R112 heb ik een 47k weerstand geplaatst om de focus versterking wat te vergroten. Eerst nagaan of de focus gain wel je probleem is. Eerst de lens schoonmaken of ook onder de lens schoonmaken.
Hi, I've got a Marantz cd 67 that's saying no disc whatever disc is put in, I've taken the top off and tried pushing the disc like in the video but nothing happens. The disc isn't spinning at all and the laser doesn't appear to be lighting up. Is it likely the laser is dead or could it be something else?
Any help would be highly appreciated 😬
The laser needs power and enable signal. Check service manual for voltage levels in PLAY mode. Maybe a bad solder joint on PCB or bad connection. The laser could be dead but this doesn't happen too often. Mind the the laser is only turned on a short time after you close the drawer or press play. That is without disc. To look if laser turns on in a dark room as it is hard to see. Don't stare directly into laser beam.
Since I posted the original question I bought a replacement laser unit, put it in and its all working fine now
firm Marantz should recognize own bad quality and should offer serious professional repair for free, no matter if guarantee term is passed
Sometimes it's the capacitors on the main board and sometimes the main board is damaged beyond repair and if it's damaged beyond repair and that causing the disc read error then your better off chucking it and throwing it away because it sometimes is impossible to repair and also the laser diodes can burn you and should not be exposed and looked at while powered on so use caution when opening it up while powered up
I have this player. The cd-67mkIIose version. Have you ever noticed the mechanical hum of the transformer?
Can't say I notice any hum, perhaps if I put my ear against it. You mean the cabinet hums or hum from the speakers? A common tweak is to dampen the cabinet.
@@japcast Mechanical from the cabinet. It's soft but some players are totally silent which I would prefer.
It was succesfull for me. Thanks
what I don't have r112 then where 2 put all I'm seeing is r1011
It is Marantz CD 67 mkII
Thank you so much!!!!!!!
Genial!
What is lense here?
You are a genius!
Hi There can you tell what model of marantz cd player this is?
I have the same unit in black - it's a CD-53 - I get it to play by coaxing it along. This is the perfect fix !! Thanks
PS: I believe CD-63 is the same
Will this help with the disc skipping problem of the Marantz CD63 MK2?
That doesn't sound like the same problem I encountered. Mine would not read most CD's and when it did read there was no skipping. Skipping can occur every time when the pickup sledge moves a step forward. Some times the sledge shaft grease gets hardened and there is too much friction. To clean the shaft and grease, of course at your own risk. But skipping could be due to other problems too.
@@japcast Thanks for the reply. Skipping can indeed have multiple causes, the laser positioning mechanism can definitely have some dried grease in the spiral screw and/or shaft. I am looking for a backup 63 mk2, before I try to fix my current one. I thought I had found one, but the owner checked it another time, and found it had disc reading problems too...
@@rc-fannl7364 Would guess it is a mechanical or optical problem. The CDM12.1 transport can be found for bargain prices. And although imitation they work, I know from experience.
@@japcast Some say the pickup unit can also affect the sound, something to do with cleanness of the laser signal, phase delays, etc. Not sure what to believe, I do know that the CD63 MK2 sounds amazing, and has a better sound than some other comtemporary disc players.
Thanks
May I know for marantz 63se player, which of the resistor, I need to put 47 K resistor on it? Urgent. Thanks
I also had the same problem of yours, the resistance in the 63 model is already from 47k, in the circuit is the R153 - Moto01, I did the exact opposite of what is explained in the video, I welded over the one from 47k a 12k , it seems that the problem is solved. For the moment the reader works well.
+sergio b. thanks s
+sergio b. how to solve the same problem for rotel rcd02 CD player that can't focus ?
+sergio b. already changed a new laser head, still can't focus ?
@@sergio02091963 You mean took 47k out and replaced with 12k or added 12k on 47K?
Does it work with cd -63 mk ii?
hello where do i put the resistor exactly ... ??
I would say try it by pushing it on the ends of the one already in situ (as he does in the video) to see if it works first and then remove the main board and solder to the base in position. He does mention the position in the video.
Across R112.
This looks just like my CD-53 that's giving me the exact same problem. Great video.
My CD-53 - I can't find R112. Any suggestions?
Thanks
A "no disc" error can have many causes. Please try cleaning the lens first. In my case the focus offset was off and this could have to do with the spindle height but I was able to correct with a resistor. To look for the feedback circuit for the focus actuator. Again the problem with your player could very well be another one.
Is there a permanent solution or do you have to do this every time you want to pland? cd?
In the video I showed that without resistor it wouldn't read discs and with the resistor it does. So I just held the resistor across the original resistor to demonstrate the difference. Afterwards I soldered the resistor in place and proved a permanent solution in my case. I still wonder if maybe something else was going on, f.e. that the spindle height is not right for some reason which would explain the focus offset problem I encountered.
Good experience
hello a have a same problem whit a marantz cd 6002 can t you help me please.-
Ferrari Dario you should use extreme caution when working on the inside of a cd player like that while it is powered on and plugged into the wall because the laser diodes can damage your eye and even burn you and also the transformer and the main board can give you a 120 volt ac shock if you touch certain parts of it also the capacitors can hold a dangerous amount of electricity and possibly kill you so be careful when doing what he is doing because it's very dangerous you would be better off getting a new one off eBay or getting a stereo receiver with a CD player built into it
whole cd carriage mold? is bäd ?xD
huge differences when playing burned cds at least with jvc taiyö !? (later tracks)
(lens cleaned)
rega plänet etc mekkänics ^^
Bill Evans :)
Hi ,CD Player is not working. There is no electricity, no screen.I need to check what is there insurance? Can you help? Marantz cd-38
I don't know what might be causing this. The problem I demonstrated in my video was different. To start measuring all AC voltages coming out of the transformer. If no voltage at all perhaps the thermal protection inside the transformer failed or a fuse or mains switch or power cord interrupted. Secondly to check all DC voltages before and after the regulators according service manual. Check filament voltage of display. If all ok then to check if oscillators are running. Is a low jitter clock installed? Maybe some problem with this. Check for all internal connections and bad solder joints. Cracked circuit board? Please be careful since live voltage is present in this CD player.
@@japcast The fuse was blown and I fixed it.TCA0372DP2 FUX9808 It got super hot and I pulled the plug.could it be broken from this
@@suataydemir9144 This could be the driver chip for the drawer motor. Short circuit in motor or this chip. Please see service manual. You could cut power to this chip and move the drawer by hand just to verify this chip is the problem.
@@japcast There is no image on the LCD screen. Drive motor is running continuously.Keys are not active.
anyone try this with NAD 502 ??
sorry but I did not understand the procedure. do you remove the R112 Resistor and use another one with 47k? the picture is blurred and your hands are disturbing.
So, please can you give me a short explanation in easy words. Thanks
We are not understand ,
You do this ,please upload
Other video ,
Anyone try this with marantz cd 48
Hi
Merruns :'D
Sorry my bad english)))
Liked your vid n channel, Subbd also, I just did a Dvd repair vid too, check it out if ya can
Danger! Life voltage can kill!
"Ma-RANTZ", not "MARE-ants".
or you could just clean the lens...
I have the same problem. I understand that you fixed the probleb, but I didn't understand how! What you put on the board and where exactly?
No disc error can have several causes. First try to push down the CD a little after pressing play. If it does spin and read then you have the same problem. Look for R112 on the PCB. Solder a 47k resistor across existing R112. That's all.
.
On Marantz CD63 R112 is located on RF AMP PCB. Is this the same resistor (120k)?