Philips CDM 1 MKII transport - diyAudio
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Old 13th January 2004, 12:43 AM   #1
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Join Date: Jun 2003
Location: Wroclaw
Default Philips CDM 1 MKII transport

Hi,
I came across plastic Marantz player that have drive named CDM1/MKII.The player doesn't detect the discs.Probably laser died.This laser is quite similar to CDM4/19.What differs is that it has aluminium chassis and the motor spinning the cd is diffrent.
When I put the cd in to the player it slightly spins it two times and says no disc.
I have other player that uses CDM4/19 and I took it apart and compared.I figured that the arm with its magnet and laser lens is identical to the one in this CDM1/MKII.I put the one from CDM4 to CDM1 but it didn't work.

Are the arms/lasers from CDM 4/19 and CDM 1/MKII interchangable?
What kind of drive CDM1/MKII is,is it more popular than raw,probably older CDM 1?

Bartek
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Old 13th January 2004, 07:44 AM   #2
EDUM is offline EDUM  Netherlands
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Hi,

CDM1/MKII was an attempt to let the market believe that all the good aspects of a real CDM1 were back. However the truth is that a CDM1 became simply to expensive (costprice!) to compete on the market. So some visible parts were made out of metal and the rest borrowed....

Go through the checks for laser, focussing and radial tracking to see what is dead. May be you can exchange parts.

Success!

Ward
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Old 13th January 2004, 09:06 AM   #3
chlo is offline chlo  United Kingdom
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Default CDM1 in CD80 can be repleced CDM4/19

Hi,

I have got the same problem with my CD80, I put the laser head of CDM4/19 in and it worked, but it just worked like the laser head of CDM1 itself. I think the problem is the Motor, you need to open and clean the motor may be put some oil in the ball-bearing. Another possibility is less current running into it. Replace new caps may help.

Chuong
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Old 13th January 2004, 10:37 AM   #4
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Thanks for answers.

It is strange that those two look identical (I even measured magnet and laser lens windings and they are the same) but they seem to be diffrent.
As I said I put the arm/laser from CDM4/19 to CDM1/MKII and it doesn't work.
I also try to put arm/laser from CDM1/MKII to cdm 4/19 (Just in case it really the motor is broken) and it didn't work either.
This is either bad coincidence or they are not the same.
If I had another player using CDM1/MKII I could easily detect what is broken,wheater it is laser,motor or whatever.


Bartek
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Old 13th January 2004, 10:45 AM   #5
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Does CD 80 use CDM1/MKII?
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Old 14th January 2004, 10:57 AM   #6
chlo is offline chlo  United Kingdom
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Hi there,

I check my CDP last night but could not find any thing relates to CDM model, but the body is solid alums and cross zig-zag on it. I also did the cleaning for the motor, because it is still skipping after track 3,4...

Bad news is when I reassembled it and play. The CD does not work, and some buttons in front were on all time. I can not even press anything, even open the tray, the player ignore me!... do you have any idea?. I am sure that CDM4/19 laser head does work on my CDP.

Regards.

Chuong
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Old 14th January 2004, 11:44 AM   #7
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Too bad!
Try reassemble it once again,maybe it will work.
If it skeeps 3-4 track check the swing arm and its bearings (two balls).Maybe it doesn't move smooth all its way.

So you are saying that you put CDM4/19 laser/arm to CDM1/MKII and it worked?

Bartek
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Old 14th January 2004, 12:32 PM   #8
chlo is offline chlo  United Kingdom
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Yes I did and it worked the same way as original CDM on CD80, after 2,3 track then skipping.
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Old 17th January 2004, 08:55 AM   #9
aesse54 is offline aesse54  Italy
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Join Date: Feb 2003
Location: Rome, Italy
Quote:
Originally posted by EDUM
Hi,

CDM1/MKII was an attempt to let the market believe that all the good aspects of a real CDM1 were back. However the truth is that a CDM1 became simply to expensive (costprice!) to compete on the market. So some visible parts were made out of metal and the rest borrowed....

Are the CDM1 and the CDM1 mkII completely interchangeable?

I mean, if I have a CDM1 mkII, can I take an old CDM1 to have parts
I may need in the future?

Thanks

alessandro
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alessandro
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Old 17th January 2004, 09:00 AM   #10
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I think they are not.

They look totally diffrent.CDM1/MKII is more like CDM4 ,and indeed I just adopted CDM 4/19 arm/laser to my CDM1/MKII yesterday and it works great!

Bartek
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