VAM1204 VAM1205 VAM1206 VAM1250 VAM1252 VAM1254 CDM12pro VAU1254=CDM12.4 compatib

[tiefbassuebertr]

VAM1204 VAM1205 VAM1206 VAM1250 VAL1250 VAE1250 VAM1252 VAM1254 CDM12pro VAU1254 = CDM12.4 compatible - Which VAM laser head (optical pick up) successor is compatible to Philips "CDM 12.4" ?

Between CDM12.1 laser head and VAM1201/VAM1202 laserhead there are compability although hologram laser diodes of different outline to be used. CDM12.1 use TO-outline, while VAM1201 use resin package.
In opposite to this one the complete mechanism isn't compatible through different behavior by the magnetic properties of turntable (disc motor pulley) There are only a 3 transistor APC unit (autom. power control) included, both CDM12.1 and VAM1201 laser head

Now to the actual topic concerning the CDM12.4 head
There are TDA1302 on board of the optical pickup (APC+RF amplifier)
In the last time (since arround a year) I note an increasingly poor quality, so that I need other solution for successful service and repair by older high quality cd players - e. g. Naim Audio, Meridian, Primare, NAD,Thule Audio, TAG McLarren, Classè and some other brands with CDM12.4 inside.
But I am confused regarded the interchange between the compatibility of CDM12.4 and VAM-Versions

by URLs
http://www.marantzphilips.nl/index.a...M&strPage=Info and
http://www.ersatzteil.justone-schnepel.de so as
http://www.daisy-laser.com/

I find only broken but not complete informations. By other places I find additional fragments of informations so as some datasheets and photos. Follow informations I have found on the web:

1) CDM12.4 without brushless disc motor (hall motor) no detailled datasheet

2) VAM 1204: without brushless disc motor (hall motor) no detailled datasheet

3) VAM 1205 with brushless disc motor short form datasheet:
http://www.daisy-laser.com/downloads...s/prem7000.pdf
inside in NAIM CDX NAIM CDS II MERIDIAN 508.24
http://www.soundex.ru/wiki/Meridian_508.20:Inside (VAM1205 im Meridian 508)

4) CDM12.5 unknown, no detailled datasheet

5) VAM 1206 unknown, no detailled datasheet

6) VAM 1250 both with brushless disc motor (hall motor) and normal DC motor, datasheet VAM1250/21 Nov. 2002:
http://www.daisy-laser.com/products/...5021quad01.pdf (deleted schema page 18)
www.partmate.com/download/OPU/VAM125021.pdf
http://www.ersatzteil.justone-schnep...0_vae1250.html (Loader VAL1250)
http://www.ersatzteil.justone-schnep...ereinheit.html (VAM1250 head)
http://www.daisy-laser.com/products/...50/vam1250.htm (VAM1250, dhort form data)
www.pymblehifi.com.au/Naim_CDS3_brochure.pdf (VAM1250 in use by Naim CDS3)

7) VAM 1252 with brushless disc motor (hall motor) no datasheet
http://digilander.libero.it/paeng/the_vam1252.htm sketch, schortform data, really same as CDM12 - CD-PRO?
http://www.geocities.com/koalavilla/audio_transport.htm The CDM12 CD-PRO (VAM1252) diy project incl schem
http://www.bgaudioclub.org/uploads/d...tz_CD-7_SM.pdf (Marantz CD7 CD 7 service manual)

8) VAM1254 CDMpro2M CDpro2LF
VAU1254/01 version August 2000 Hologram LTOH30PA + RF-amp TRIGINTA, datasheet August 2000:
www.vendoramusements.com/images/DataSheet.pdf (schema page 24)
VAM1254/11 with brushless disc motor (hall motor) datasheet August 2000 and Nov. 2003
http://www.daisy-laser.com/products/.../downloads.htm (several PDF downloads, also newer datasheet from November 2003 with Sharp GH6C005B3BA + RF amp TZA1022 )


9) Miscellanous
Picture of Marantz CD7 with Double Crown
"There is a huge difference between VAM1252/00 and VAM1254/01.
Different chip (CD-7 laser uses TDA1302T) and pin config of flatcable is different".
http://www.ersatzteil.justone-schnep...0_cdm1210.html
CDM1210 = VAM1205 but not CDM12.10 and not CDM12.1 !!!
http://forums.naim-audio.com/eve/for...5/m/4772931607
http://www.pinkfishmedia.net/forum/s...ad.php?t=42235 (replace VAM1204 through VAM1205)
Vam 1205 CDM 12.5 Naim CD5 Vam 1205/1250 CDM 12.5 Naim CD5
WTB: VAM1205 or CDM 12.5 fro Meridian 506 VAM1205 or CDM 12.5 fro Meridian 506
http://www.pinkfishmedia.net/forum/s...ad.php?t=42235 How To Convert VAM1204 To VAM1205?
http://www.pinkfishmedia.net/forum/s...ad.php?t=51160 VAM1205 (Naim CDX) Problems
http://www.geocities.com/koalavilla/audio_transport.htm describtion "The CDM12 CD-PRO (VAM1252) Project"
http://digilander.libero.it/paeng/the_vam1252.htm describtion of components
http://m.review33.com/forum_msg.php?...art=750&sort=1 NAD S500 - CDM12.4
http://www.daisy-laser.com/products/...dmechanism.htm (VAM1202+1250)
CDM-VAM informations in foreign languages (Polish, Thai, Chinese) and very nice photos)
http://www.audiostereo.pl/forum_wpis...at=45746&all=1
http://www.cndiyclub.com/bbs/read.php?tid=14464 Detailed description concerning the quality
http://www.letusdiy.com/html/diy/diy...81029/975.html (dissass'y hologram-laser)
http://www.letusdiy.com/html/diy/diy...029/975_2.html
http://www.letusdiy.com/html/diy/diy...029/975_3.html
http://www.letusdiy.com/html/diy/diy...29/975_4.html#
http://www.thaidiyaudio.net/index.php?topic=1642.0 (photos diy cd player)

[tiefbassuebertr]

Which VAM laser head (optical pick up) successor is compatible to Philips "CDM 12.4" ? - continued

10) sellers (delivery sources) of laser heads (optical pick up)
http://www.butik4281.dk/butik/index....94&language=en VAM1205, only head, 111,20 US-Dollar
http://www.ersatzteil.justone-schnep...ereinheit.html
VAM1250 head 93,90 Euro
http://www.pinvan.com/CDMPRO/cdordering.html
CDMPro2 optical pick up ***'y 79,95 US-Dollar
http://www.pinvan.com/CDMPRO/cdordering.html
CDM12 CDM-Pro optical pick up ***'y 49,95 US-Dollar
http://www.n-tronics.com/deutsch/ele...reinheiten.php
CDM12.4 Head between 7,80 Euro and 15 Euro
http://www.donberg.de/katalog/laser-abtasteinheiten/
CDM12.4 Head 18,99 Euro
http://cgi.ebay.com/2-Philips-CDM12-...d=p3286.c0.m14
CDM12.4 Head 30,50 US-Dollar
http://cgi.ebay.com/NEW-PHILIPS-LASE...d=p3286.c0.m14
CDM12.4 Head 17,45 US-Dollar


11) sellers (delivery sources) of complete mechanism and diy kits
http://electronics.dantimax.dk/Kits/...367303502.html
CD-PRO2M/LF = 289 Euro
http://www.ersatzteil.justone-schnep...0_cdm1210.html
CDM1210 = VAM1205 but not CDM12.10 and not CDM12.1 !!! incl. mechanism 35,90 Euro
http://www.daisy-laser.com/products/...ro2/cdpro2.htm (wholesaler)
http://www.diy-high-end.com/price/ CD-PRO2LF 232,-- Euro
http://www.diy-high-end.com/index_be...n/Page1140.htm Nico Thevissen
CDPRO2 at diy-high-end.com Nico Thevissen
supply regularly CD-Pro2 module VAU1254 CD-Pro (VAU1252) CD-Pro2 (VAU1254/11) vam1250 (smartech - Manager of VCD-pickup)
http://www.steinmusic.de/audiofino/komp-cdplayer.html (only complete diy kits with CDM12)
http://www.akustik-perfekt.homepage....ayer_dacs.html diy kits
http://www.armoniahifi.com/EN/CD1.html diy kits
http://us.hifidiy.net/Article.asp?articleid=207 diy kits
http://electronics.dantimax.dk/Kits/...367303502.html diy kits
http://www.audiodiylab.com/modules/o...p?product_id=1 diy kits
http://www.audiodiylab.com/web_image...e/cdp/CD_1.JPG diy kit
http://bergrans.despinnerij.nl/index...ent=halloffame diy kits

12) NSM jukebox cd players
different images of CDM12IND, VAU1252/10 (CDMpro) und VAU1254/11 (CDMpro2)
also of interest to order for high end audio
http://www.pinvan.com/CDMPRO/cdfaq.html# Jukebox CD Players CDM12 - CDMpro - CDMpro2
http://www.pinvan.com/CDMPRO/cdproducts.html replacement parts of CDM12 - CDMpro - CDMpro2
http://www.pinvan.com/CDMPRO/cdhome.html service overview

13) Examples of CD player models, there are CDM12.4 inside:
Thule Audio CD150B
TagMcLarren CDT20, CD20
NAD S500
T+A CD1210R
Cyrus dAD1 dAD3
Sonic Fronties SFT-1
Exposure
PRIMARE D20
CLASSE AUDIO CDT-1
HELIOS MODEL 1S 2S

14) datasheets of Sharp hologram laser diodes:
Sharp LTOH12M datasheet (cdm-9)
http://www.datasheetcatalog.org/data...rp/mXqxuqy.pdf (10pol TO-outline, metal, CD+CDR)
LT0H33P (Mini Disc)
http://www.datasheetcatalog.org/data...rp/mXutzqq.pdf
Sharp GH6C005B
http://www.daisy-laser.com/products/...h6c005b3_e.pdf
Sharp LT0H30PA, LT0H30PB, LT0H30PC (mentioned in US patent 5511059)
http://www.pat2pdf.org (please fill in 5511059 before download)
LT0H43M (CD-ROM to x16 speed)
http://www.datasheetarchive.com/pdf-...13/259322.html
GH6C005B5A/B GH6C005B Ser. for Philips (CD CDR and CD-RW compatible, use in CD713)
http://www.daisy-laser.com/products/...h6c005b3_e.pdf

In this case I have only four questions:
1) Are there compatible optical pick-up's to this one of CDM12.4?
2) What is the main reason of the huge price difference between the laser heads of VAM and CDM12.4 - could it be the different quality standart of the hologram laser diode?
3) The original manufacturer of the hologram laser diodes was Sharp Semiconductor. Now there are no longer available and supported. Which brand name produces currently this hologram diodes (daisylaser don't know this - because he is only wholesaler - also VCD-pickup and Three Sixty) ?
4) Where I can find/order a detailled datasheet of hologram LT0H30PA or their successor from todays production?

Thank you very much for your advices.

[anatech]

Hi tiefbassuebertr,
All the Philips mechanisms and possibly heads are offered with options, so you end up with a ton of part numbers - and they can be completely different.

One thing is cetain though. Once Philips started manufacturing in China, the quality control became non-existant. I do use the VAM1202 both in a complete transport, and as a subassembly. The quality ranges from non-working to working okay, but never really good. The VAM1202 is different than the CDM12.x.

Chasing down specs for the actual laser diode will be unhelpful. Sharp sold these as a large OEM order for an industrial customer. They were not available for individual sale to the best of my knowledge. Not only that, but the quality ranges pretty far up and down the scale. It's possible the laser diode can be supplied as die, in which case you can forget messing around with them. I've never wasted the time to crack one open. Suffice to say that many manufacturers of CD product has either ditched Philips or are scrambling for another OEM.

If you want to pursue this, go ahead and search. If you are attempting to repair a head, I think you are wasting your time. Don't forget the alignment for the optics, then calibrating the laser power sensing diode.

-Chris

[Stones]

Don't use the pinvan guys for CD Pro parts or repair, I had the worst experience I have ever had the misfortune to encounter, one issue after another with these guys. And no end resolution

[Apogee]

Greetings:

I would love a list of units that the VAM1202 mechanism was used in.

My thinking is perhaps it might be possible to order direct from Marantz or some other vendor and still be able to get an original module that is new.

I have a beautiful Esound E5 that I love the sound of. Unfortunately, it no longer works, and the two past laser assemblies that I installed in it were "rebuilt" even though they were sold to me as new.

I'd love to get the unit working properly again.

I've also considered attempting to swap in a different transport assembly VAM 1250 perhaps?) but don't know if there are any that are compatible...

And yes, I did contact the original manufacturer (Cattylink) and they don't support anything that is out of warranty. VERY disappointing!

Also contacted Daisy Laser and they are able to get them, but I would have to order in quantities of 100 minimum...

Any help would be much appreciated!

Regards,

Steve

PS - A message to Philips - Fire all of the bloody accountants that are running the company into the ground!!!!

[anatech]

Hi Steve,
This is a good opportunity to mention that failure rates for VAM 1202 are really high. The odds of getting working one are slightly better than 50:50.

A rebuild makes no sense, it would have to go back to China, and they only ship out, not in. What you got must have been a "pull" from another unit. It was likely in for the same reason. I do understand why the manufacturer does not want to get involved in this. They can't win and they will lose money on this. It would be better (and less expensive for them) to simply ship two for every order of one.

Information on these transports is difficult to find. We don't normally get any information at all.

-Chris

[tiefbassuebertr]

Hallo Steve, is your player the same as this by the follow images:
http://www.referenceaudiomods.com/images/P4220110.JPG
http://www.tnt-audio.com/jpg/esound_interior.jpg

Then - so I think - you have Loader L1210 in use (to read on white sticker) and you need for a good optical pick up with fine function one of this player in good condition:
Philips CD713, CD723 or CD753 - e. g. ebay Item number: 110422033129

http://cgi.ebay.com/Philips-CD713-CD...3286.m63.l1177

[tiefbassuebertr]

Originally posted by Stones
Don't use the pinvan guys for CD Pro parts or repair, I had the worst experience I have ever had the misfortune to encounter, one issue after another with these guys. And no end resolution

"The pinvan guys" - a new keyword, even by google. If I put in thos one there, only this thread comes as proposal. Also my english isn't perfect.

What means "pinvan guys" ?

[tiefbassuebertr]

at my last post (post #8) about the weblink
new Brand of Hologram Laser (LDGU) LT0H30PA inside by Philips CDM12 and VAM12 mech
you will find interesting informations regarded different quality standarts of laser tubes (hologram laser diodes)

[tiefbassuebertr]

The question of compatibility from the above mentioned mechanism types to the CDM12.4 isn't longer important for me, because I replace in the last time always the hologram laser diode (LDGU) itself. Instructions with some pictures you will find there:
Stripdown/Clean of CDM12.4

Instead of this I want to know the currently producer of Sharp's hologram laser tubes in both TO and RESIN COMPACT outline - go to
new Brand of Hologram Laser (LDGU) LT0H30PA inside by Philips CDM12 and VAM12 mech