Meridien 560 mod mech from 1205 to CDM12.4

[cm]

My Meridien 560 uses the VAM 1205 mech which is obsolete. I have successfully replaced the lazer with one from a new CDM12.4 mech. Unfortunately, now the brushless motor is giving problems. Not the motor but the turntable - the magnet dropped off. I tried to fit a replacement from a 12.1 mech, VAM1250 and the CDM 12.4. None fits as the shafts are all different in diameter. 😡😡

So now I am thinking of replacing the entire mech with a CDM12.4 mech. I will need to mod the motor driver though, as the CDM12.4 uses a DC servo motor rather than a brushless motor. So the idea is to use the MC signal from the SAA7310 to control a TDA7073 to drive the CDM12.4 motor.

I was trying to trace the circuit but it is getting a bit tedious, and hence the reason for this post - does anyone has a schematic for the Meridien CD 560 player. I have emailed Meridien and hope that they will email me a copy of the schmetics.

I would appreciate if any guru out there can advice if my idea is crazy, or propose another possible mod. If successful, I will post the results.

Thanks.

 

[cm]

Looking for Meridien 506 and Meridien 508 service manual

No replies from anyone, and no joy from Meridien as well.:

Maybe my title was not effective, so my new attempt to get some information to help in my quest to resurrect my Meridien CD player.

 

[tiefbassuebertr]

This mechanism is also used in various Naim models.
Here suppliers of the normal no longer available VAM1205 and clampers therefore:
JusTone Lasereinheiten. CDM12.5 / VAM1205 Laufwerk PHILIPS. NAIM CD3.5 . Lasereinheit, Laserpickup, Laserunit, Pickup, Laser, Laserkopf
CD Clamp 3 (CDM9/VAM1205)
check also out this:
VAM1205 (Naim CDX) Problems - pink fish media
Which Naim CD players can not be fixed ? - Topic Powered by Social Strata
VAM1205-repair [VAM1205 -CDM12.5-repairkit] - $70.28 : Zen Cart!, The Art of E-commerce
VAM1205 [VAM1205] - $107.04 : Zen Cart!, The Art of E-commerce
http://www.diyaudio.com/forums/digi...am1254-cdm12pro-vau1254-cdm12-4-compatib.html
http://www.diyaudio.com/forums/digi...lt0h30pa-inside-philips-cdm12-vam12-mech.html
http://www.diyaudio.com/forums/digital-source/158584-philips-cdm12-industrial.html
http://www.diyaudio.com/forums/digital-source/118902-stripdown-clean-cdm12-4-a.html

OEM Factory for KSS-213C,khs400b,khs400c.khs400r,KSS240A,kss-213B, KSM213CCM,Vam1202,CDM12.1,KSM213CJM,KSM213QCM,VAM1201,H8147AF,CMS-B31,Soh-AAU,VAM1223/11,SF-HD3,DV32,DV34,,hop1200s,kss-210a,kss-210b,kss-212a/b, (call and ask)

What exactly was the reason for necessary replacement?

Please note: CDM12.4 uses a laser unit (optical pick up) with RF preamp IC TDA1302.
and VAM1205 uses a laser unit (optical pick up) with the successor IC, TZA1022, also used in VAM1250 and VAM1252/CDpro-IILF.
But therefore both laser units are interchangeable, because not compatible !!!

 

[tiefbassuebertr]

My Meridien 560 uses the VAM 1205 mech which is obsolete. I have successfully replaced the lazer with one from a new CDM12.4 mech. Unfortunately, now the brushless motor is giving problems. Not the motor but the turntable - the magnet dropped off. I tried to fit a replacement from a 12.1 mech, VAM1250 and the CDM 12.4. None fits as the shafts are all different in diameter. 😡😡

So now I am thinking of replacing the entire mech with a CDM12.4 mech. I will need to mod the motor driver though, as the CDM12.4 uses a DC servo motor rather than a brushless motor. So the idea is to use the MC signal from the SAA7310 to control a TDA7073 to drive the CDM12.4 motor.

I was trying to trace the circuit but it is getting a bit tedious, and hence the reason for this post - does anyone has a schematic for the Meridien CD 560 player. I have emailed Meridien and hope that they will email me a copy of the schmetics.

I would appreciate if any guru out there can advice if my idea is crazy, or propose another possible mod. If successful, I will post the results.

Thanks.

Have you get successful results in the meantime?