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Old 27th September 2010, 11:28 AM   #21
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Quote:
Originally Posted by phi70 View Post
No DISC messages from SFT1 or SF-CD1 or Micromega...

Over the past several years I have collected 2 SF-CD1s and went through numerous laser heads.

Whenever they act up, one will not read anything (NO DISC)
and the other one reads intermittently and absolutely will not read any copied CD-Rs.

A unit with a newly replaced laser will not survive a short road trip to a friend's house... NO DISC upon arrival and it happens everytime.

Yes. It's just Philips CDM12.4, you can find them everywhere on EBay but most of them are "cannibalized parts" sold as new.

The CD1s seem to "chew through laser heads one every few months so I thought. Lately it got so bad I thought its more likely the board underneath the transport that is getting too old to read anything.

Spent the weekend trying to fix my them and after fiddling with just about everything it turns out the lasers are still fine. The heads need manual adj despite all the docs floating around stating otherwise.

Tweaked the alignment of the heads with a torx screwdriver using purely trial and error gets rid of the "no disc" error and the "skipping track" and "not able to read copied CDs" problem. Once roughly aligned you will see the CDs spin again after door closes. Then its a challeneg to get them tweaked till they read CD-Rs and the higher-numbered tracks.

The SF-CD1, unlike Levinson and Wadia, does not have a locking screw to secure the head.

The damn silicon stud mounts give way during transportation and causes the heads to be misaligned. They were probably marginally aligned in the first place or aligned for some other bracket than your particular model.
I think, you mean the Sonic Frontiers Transport model ONE.
I know the problems with CDM 12.4 replacement heads and have therefore start this threads:
new Brand of Hologram Laser (LDGU) LT0H30PA inside by Philips CDM12 and VAM12 mech
VAM1204 VAM1205 VAM1206 VAM1250 VAM1252 VAM1254 CDM12pro VAU1254=CDM12.4 compatib

If money dosn't matter, order from Marantz CD-7 the laser head or complete mechanism to get this head (VAM1252)
VAM 1252 laser needed
Same head than CDM12.4 (see schematic diagram), but higher reliability through not faked/coppied Sharp hologram diode.
Ask also by your local Naim Audio department for CDM12.4 compatible heads

check out also this threads:
VAM1254 (VAM 1254) servo/decoding PCB for CDM0 (CDM 0) - CDM3 (CDM-3)
Philips CDM12 INDUSTRIAL
CDpro2LF VAM1254/31-VAU1254/31-VAU1254/31LF - why various Die Casting Carrier Design?
SRC for CD Pro2
FS: Brand New CDM12 Industrial !!!
CD PRO 2 - The making of a high end CD Transport
VAM 1252 laser needed
HIFIDIY CD Transport Kit
Looking for Philips laser pickup VAU 1252 and VAM 1252
VAU 1253/00 need help

Stripdown/Clean of CDM12.4
Phllips CDM 12.4 transport compatible replacement
Are there Philips/Marantz CD Player Models with Loader "L1265" (L-1265) and CDM 12
Primare CD31 schmtc ? (CDM12.4)
Anyone modded Thule Spirit 150B?
Laser replacement CD-7 Marantz
Vam 1205 CDM 12.5 Naim CD5
What players use the VAM1250
Philips VAM-1250 laser Bernhard?
Vam 1205 /vam1250 / Cdm12.5
Meridien 560 mod mech from 1205 to CDM12.4
VAM1202 out of production ?
datasheet of a vam1201
Replacement for CDM 12.1
Philips VAM 1210
Attached Images
File Type: jpg Sonic Frontier SFT1 front.jpg (45.0 KB, 422 views)
File Type: jpg Sonic Frontier SFT1 open laser CDM12.4.jpg (104.3 KB, 419 views)
File Type: jpg Sonic Frontier SFT1 open loader top.jpg (105.3 KB, 409 views)
File Type: jpg Sonic Frontier SFT1 open PCB.jpg (105.4 KB, 407 views)
File Type: jpg Sonic Frontier SFT1 open top.jpg (105.8 KB, 404 views)
File Type: jpg Sonic Frontier SFT-1 rear.jpg (50.2 KB, 99 views)

Last edited by tiefbassuebertr; 27th September 2010 at 11:38 AM.
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Old 27th September 2010, 04:32 PM   #22
phi70 is offline phi70  United States
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Default Both the SF-CD1 and SF-T1 are the same

12.4 mechanism. The CD1 is a player whereas the T1 is a transport only model.

The trial and error alignment process was a real pain. As you said its impossible to adjust while the CD is there.

How do we know whether a seller is selling a ripoff laser head or a real original? I know from the whole pickup assembly with the small motor and mount you can see from the stickers whats cannibalized and whats new but laser pickup only? I guess it's all luck of the draw unless buying direct from Marantz.
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Old 27th September 2010, 06:17 PM   #23
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Location: D-55629 Schwarzerden
Quote:
Originally Posted by phi70 View Post
12.4 mechanism. The CD1 is a player whereas the T1 is a transport only model.

The trial and error alignment process was a real pain. As you said its impossible to adjust while the CD is there.

How do we know whether a seller is selling a ripoff laser head or a real original? I know from the whole pickup assembly with the small motor and mount you can see from the stickers whats cannibalized and whats new but laser pickup only? I guess it's all luck of the draw unless buying direct from Marantz.
...or unless buying direct from a jukebox spare part supplier like
Jukebox repair restoration and servicing of Wurlitzer Rockola
or
Jukebox Manufacturer and Repairs
ckeck also out this:
????CDP 506 ?? ?? CDM12.4 - ?? KS Audio ?????? ??? 010-2929-8432 - ??! ???
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Old 6th September 2014, 04:20 PM   #24
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Location: D-55629 Schwarzerden
new advices at post #8 about
Marantz CD-63SE replacement laser problem
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