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

[tiefbassuebertr]

I have find out, that there are only three (electrical) different laser heads for the VAM12xx resp. CDM12.x and CDM12pro/CDpro:

1) such with only three transistor APC unit on board (not CD/RW compatible)
2) such with TDA1302 (RF amp +APC unit) on board (not CD/RW compatible)
3) such with TZA1022 (RF amp +APC unit) on board ( CD/RW compatible through automatic switch voltage gain factor, also in use:TZA1022TS)

All this mentioned laser head uses Laser diodes (LDGU = hologram laser diode) both in a round TO outline and compact resin design.
On some sources on websites from China is additional to read about different quality standarts, but I don't understand, whether the reason therefore is only the different outline or some unknown brand, that clone formerly's Sharp diodes LT0H30PA (to-outline) resp. GH6C005B3BA (resin compact)

I will post in the next time, which laser head inside in which CDM12/VAM mechanism.

[tiefbassuebertr]

Philips Laser head's (Optical Pickup's) for CDM12.x, CDM12.xx and VAM12xx/VAE12xx/VAU12xx

A. Laser head without IC, only three transistor APC part:
CDM12 ind CDM12.1, VAM1201, VAM1202, VAM1223 - noted differences: only magnet from disc motor pulley;
because only for outdoor RF amp use, both suited for CD and CDRW. Mostly to find in cd player equipped with Philips CDM12 mechanism. I recall to some older CDM 12-Pro, CDM 12-IND and CD-Pro also equipped with this laser unit without RF amp IC. In this case only the die-cast carrier of that Philips professional mechanism without the suited decoder-PCB (but with hall motor instead brushed motor) was in use. I forget the model numbers unfortunately.

B. Laser head with RF-amp TDA1302 (TDA1302T), actually developed for interactive compact disc player = CDi:

1) Plastic:
- CDM12.4 (brushed disc motor), in use for example: AURA Designs CD-100BK, Tag McLaren CD20R, NAD s500, Cyrus DAD3, DAD1, DAD3q, Oracle CD1000/1500, T+A CD1220R, Audiolab 8000 CD Classe Audio CPD-5 and CDT-1, Exposure CD player without model No, Helios 1S, 2S, 3S and Helios Stargate, Meridian 506, Micromega Stage 2, Quad 77, Primare D20, Thule CD100, CD150B and TR200, Sphinx Project 32
- VAM1204 (rare),
- VAM1205 (hall disc motor) in use e. g. Naim CDX, CDS-II (CDS 2) CD5-CD3.5 Revox E426

2) die-cast (hall disc motor and sometimes screening solder site of hologram diode)
- CDM12 IND CDM 12IND CDM12IND (first generation) Laser pickup outline like that one from CDM12.4
- CDM12 PRO Laser pickup outline like that one from CDM12.4 (APC+ RF-amp: TDA1302)
- CD-Pro (CD-pro MK-I, VAU1252, VAM1252 in use e. g. Audiolab 8000 CDM-II MARK LEVINSON No 390S, Marantz CD7, ORACLE CD DRIVE, Burmester 001,
http://www.daisy-laser.com/downloads...s/prem7000.pdf (short form character of VAM1252-1205)

C. Laser head with RF Amp TZA1022 TZA1022T (Triginta) for CD/RW (successor for TDA1302T):

1) Plastic:
- VAM1250/VAL1250/VAE1250, in use e. g. T+A 1230R, T+A 1240R, Burmester 006, Naim Audio CDS-3 (CDS III, CDS three)

2) die-cast (hall disc motor and sometimes screening solder site of hologram diode and foil PCB)
- CD-Pro2 (VAU1254/11) successor of CD-pro, CDRW compatible through new RF amp IC TZA1022T
- CD-Pro2M (VAU1254/31) also CDRW compatible, successor of CD-pro2
???????? ???????CDPRO2M????VAU1254/31 - ??????
- CD-Pro2LF (VAU1254/31LF) LF = lead free RoHS compliant version of CD-pro2M

All mentioned laser heads uses hologram laser diodes with two different outline:
1) TO-outline and 2) Resin Compact. The currently manufacturer is unknown for me, Sharp inform me, that all hologram laser diodes for cd player are obsolete. Cause cloned versions of this hologram laser diodes (LDGU) much CDM12/VAM12 laser heads have short live time and bad character already in new condition. Very important is therefore, that the supplier knows, from where the laser heads do comes.
check out this URL
new Brand of Hologram Laser (LDGU) LT0H30PA inside by Philips CDM12 and VAM12 mech


Unknown RF-Amp and Philips transport mecheanism laser head's:
1) Laser head with RF-Amp TZA1015 (HDALAS)
2) CDM12.6/VAM1206 (hall motor), some versions of Cayin CDT-17A and Beosound 9000
Cayin CDT-17A
Bang & Olufsen Center Essen, Dortmund, Mülheim
3) VAM1210: April Music Stello CDT200/CDA320, Brand name "original" , model number CD-9.8 da-Vinci
SSA_Original, Original Electronics Ltd.
6moons audio reviews: Original CD-A9.3 Leonardo
4) VAU1253: Beosound 3000
http://www.dupontkoustrup.dk/~toke/aau/pdf/p6.pdf
5) VAU1255/VAM1255
6) VAU1256-VAM1256
FS: Brand New CDM12 Industrial !!! (stickers, post #7)

[tiefbassuebertr]

I still want to know the currently producer of Sharp's hologram laser tubes particularly in the TO outline.

Independend of this I bought a couple of VAL1250 units from early Philips production series (remaining stock) for remove the Sharp hologram laser tubes (for replace in CDM12.4 heads of various cd player models).
VAM1250
http://www.daisy-laser.com/products/...5021quad01.pdf
There are inside TO hologram laser diodes from Sharp and seems to be working perfect (at least the first two devices by a first try).
But nevertheless I will additional try to replace the completly head include the new RF-IC TZA1022. The flex connector is compatible from the mechanical view, but not from the electrical view (see attachement). I. e. instead the mechanical adjustment procedure and the adjustment of the APC unit I must now perform a cutting/re-connection of nearly all PCB connections behind the flex connector plug on the decoder PCB.
Before I carried out this task, I will ask here, whether other members have do this.
Thank you for comments.
http://www.digchip.com/datasheets/pa...00/TDA1302.php
http://www.daisy-laser.com/products/...2datasheet.pdf

[tiefbassuebertr]

in the attachement VAM1252 schematic (from Marantz CD7) - the same I need from the VAL/VAM1250

[tiefbassuebertr]

VAL1250 is not only in use by T+A 1230R, T+A 1240R, Burmester 006, Naim Audio CDS-3 (CDS III, CDS three) and various Meridian and BAT CD player.
VAL1250 is acording the ebay auction item number 160310319946 also in the player parts from follow Philips recorder models in use:
- CDR 570
- CDR 700
- CDR 770
- CDR 771
- CDR 775
- CDR 776
- CDR 777
- CDR 778
- CDR 779
- CDR 785C
- CDR 786
- CDR 800
- CDR 802 and
- CDR 950

[tiefbassuebertr]

For Sanyo optical pick up's there is now follow high quality manufacturer (finding by chance):
||Dongguan TAIYO Co., Ltd.,
||Dongguan TAIYO Co., Ltd.,

And for Sony's optical pick up's are this:
UKC Electronics -Semiconductor / Electronic Component-
UKCƒGƒŒƒNƒgƒ�ƒjƒNƒX
Sony Device - Optical Disc - KYOSHIN TECHNOSONIC(KOREA).CO., LTD.
Formerly Kyoshin Technosonic. Kyoshin and UKC are merged in the meantime.

The same information concerning Philips laser heads I want to have, mainly for the CDM12.4.

[tiefbassuebertr]

any news concerning CDM12.4 heads in top quality and long life version?

[enantra]

Hello Tief,
something about complete mechanical CEC? ,manufacturers, distributors ....
(my old and loved TL-5100 model and my dream...TL0/TL0X model )

regards

[tiefbassuebertr]

Originally Posted by enantra

Hello Tief,
something about complete mechanical CEC? ,manufacturers, distributors ....
(my old and loved TL-5100 model and my dream...TL0/TL0X model )
regards

No. I look also to this and start therefore this threads:
Parasound "C/DP 1000" (CDP1000 C/DP1000 CDP) CEC 2100 3100 Service Manual wanted
for more URLs go to post #5 about
Yba cd2 delta, classe cdp .3, roksan caspian ... main board

[dario54]

Hi,

I found this old discussion and I wonder where is possible to find a simple, good quality belt for my CDM 12.4 found in my CLASSE' CDP1.

There are sellers on eBay offering it, but prices are up to 20$...for a belt the should cost dimes...

Any suggestions??