Laser Diode Successor of SLD-104U for SONY ESPRIT KSS Series - diyAudio
Go Back   Home > Forums > Source & Line > Digital Source

Digital Source Digital Players and Recorders: CD , SACD , Tape, Memory Card, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 4th August 2009, 06:46 PM   #1
diyAudio Member
 
tiefbassuebertr's Avatar
 
Join Date: Jul 2005
Location: D-55629 Schwarzerden
Default Laser Diode Successor of SLD-104U for SONY ESPRIT KSS Series

The follow Sony laser units (optical pick up for ESPRIT series) are no longer available:
KSS-270A, KSS271A, KSS-272A, KSS273A/B and KSS274A. Therefore only the possibility of changing the laserdiode there are.
So far I bought the KSS150A and set the laser diode to the device for restaurating (mostly KSS-272A), but that is no elegant solution
The 780nM laser diodes inside in all mentioned types of optical pick up's are mostly the follow:
SLD104U (no datasheet)
http://www.datasheetcatalog.org/data...y/a6802787.pdf (SLD104AU, 5mW)
http://www.datasheetcatalog.com/data...LD104BUL.shtml (SLD104BUL, 10mW)
For replace I need a successor type from currently production, that is compatible to the old types.
Who can call me currently types that match the requirements from the old SONY types?
at botton pdf circuit diagrams of KSS272A
thank you very much for some advices
Attached Files
File Type: pdf c ...-cd-kss-272a.ckt.pdf (42.0 KB, 464 views)
  Reply With Quote
Old 6th August 2009, 06:57 AM   #2
rabbitz is offline rabbitz  Australia
diyAudio Member
 
rabbitz's Avatar
 
Join Date: Jul 2003
Location: Newcastle, Australia
Did you use the diode from a KSS150A in the KSS272A or did something different?

I don't know if the KSS151A that are still available can be used in place of the KSS27xA series as they do look similar. Maybe someone might have had experience with this.
__________________
No longer DIY active
  Reply With Quote
Old 6th August 2009, 07:36 AM   #3
diyAudio Member
 
tiefbassuebertr's Avatar
 
Join Date: Jul 2005
Location: D-55629 Schwarzerden
perhaps you misunderstand my question: I cannot use the KSS-150A in place of the KSS-27xA !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Please note: Laser diode isn't laser head and isn't optical pick up.
Please open the pdf links and you can read more about laser diode
Because the KSS-150A use the same optical block and the same laser diode type as the KSS-272A, I remove the laser diode from a new KSS-150A. And then I remove the laser diode from the KSS-272A. At third step I set in the new laser diode from Kss 150A in the KSS-272A.
Because I dont like this work (I must better say, I hate it), I need successor diodes from currently production. Excuse my bad english.
  Reply With Quote
Old 7th August 2009, 06:33 AM   #4
rabbitz is offline rabbitz  Australia
diyAudio Member
 
rabbitz's Avatar
 
Join Date: Jul 2003
Location: Newcastle, Australia
That's what I thought you were doing. Just wanted to check.
__________________
No longer DIY active
  Reply With Quote
Old 16th October 2009, 07:07 PM   #5
diyAudio Member
 
Join Date: Mar 2006
Location: Dorset, England
This is a really good idea - cant anyone help.
  Reply With Quote
Old 28th October 2009, 03:35 PM   #6
diyAudio Member
 
tiefbassuebertr's Avatar
 
Join Date: Jul 2005
Location: D-55629 Schwarzerden
I discover this weblink:
http://www.sony-shiroishi.co.jp/product/index.html
unfortunately there are only DVD laserdiodes (650nM) and such for currently multimedia applications.
But I guess, there they knows more about successors
Perhaps from our Japanese members can call there and ask.
  Reply With Quote
Old 23rd November 2009, 08:01 PM   #7
diyAudio Member
 
tiefbassuebertr's Avatar
 
Join Date: Jul 2005
Location: D-55629 Schwarzerden
where are the members from Japan (at best earlier developers from Sony and Accuphase)?

There are great amounts of faulty vintage top CD Players from Sony and Accuphase over the world - perhaps 1 million !!! Optical pick up's (e. g. KSS-280A or KSS-273B, mostly the main reason for not reading TOC) no longer available since a long time - nowhere.

Therefore I need successors of this laser diodes for replace, used in the old optical pickup devices of certainly KSS versions (mainly for vintage "Esprit" Accuphase and SONY CD player models)
  Reply With Quote
Old 9th January 2010, 07:50 AM   #8
Salar is offline Salar  Germany
diyAudio Member
 
Join Date: Feb 2006
Location: Germany
Tiefbassuebertragung,
did you succeed in exchanging the diodes? I started a smiliar thread:

Dead Dead Laser Pickups - why not replacing the Diode only?

Do you know, which lasers used the SLD104AU, 5mW and SLD104BUL, 10mW
besides the KSS-7272 and KSS-150?

Viele Gre,
Salar
  Reply With Quote
Old 9th January 2010, 12:29 PM   #9
diyAudio Member
 
tiefbassuebertr's Avatar
 
Join Date: Jul 2005
Location: D-55629 Schwarzerden
Quote:
Originally Posted by Salar View Post
Tiefbassuebertragung,
did you succeed in exchanging the diodes? I started a smiliar thread:

Dead Dead Laser Pickups - why not replacing the Diode only?

Do you know, which lasers used the SLD104AU, 5mW and SLD104BUL, 10mW
besides the KSS-7272 and KSS-150?

Viele Gre,
Salar
No (except the 5 "ES" exemplares, repair as describted about post #1). As I know, the SLD104AU and formerly SLD104U (more current for the same optical output power) was used in all Laser units between KSS150 and KSS281. And SLD104BUL (10mW, used for professional stuff) I have never see in consumer compact disc player parts.
No compatible 780-785nM diodes are on the marked. To the currently laser diodes there are three main differences:
1) LD (Laser diode) with reverse polarity (new APC circuit neccesary)
2) MD (Monitor diode) with reverse polarity (new APC circuit neccesary)
3) other radiadion angle (diagonal exit window - see data sheet)

I am quite shure, on some forum discussions from Japan and China there are solutions, but as you can see, no of the diyaudio members from there do post here this advices.
They are very happy to receive information, but very unhappy to disclose information - that is the problem.

Please note additional - to get all informations about the data sheets, you must show a wide range of types, because SONY haven't mentioned all important things regarded their diodes by all types (e. g. no outline M-259 is mentioned by the datasheet of sld104AU !!! ) - go to
http://www.datasheetarchive.com/datasheet-pdf/7564.html

Last edited by tiefbassuebertr; 9th January 2010 at 12:41 PM.
  Reply With Quote
Old 26th January 2010, 05:49 PM   #10
diyAudio Member
 
tiefbassuebertr's Avatar
 
Join Date: Jul 2005
Location: D-55629 Schwarzerden
Now I have found any informations of the very special outline of SONY's SLD laser diodes for compact disc players:
The light beam exit (front of the M-259 housing) is angled (30 degrees) so that the exit window (anti-reflection coated) is mounted at the same angle to prevent any remaining reflections from the window's surfaces - as small as the are - from feeding back into the laser diode's envelope or interfering with the detected signal. The output of these edge emitting laser diodes is polarized. This angle is the so called "Brewster Angle"

Brewster Window - read more about this there:
Sam's Laser FAQ - Diode Lasers
scroll down to this headline
"Examples of Common Laser Diodes"

What is a Brewster Window? - go to
Sam's Laser FAQ - Items of Interest
http://www.ryutu.inpit.go.jp/chart/H.../fdennki08.pdf (history of Sony Laser, Japan language)

By the KSM-213 datasheet I note, that in addition to the Sony Type "SLD-104AU" other diodes are proposed for use, without further mentioned modifications - go to the last page about
MODEL:KSM-213QCS PAGE: 2
How is this possible?

some photos of this different laser diodes you will find about
Sony KSS213C

Last edited by tiefbassuebertr; 26th January 2010 at 05:54 PM.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Laser Diode current for KSS 151A? beauty_divine Digital Source 36 3rd September 2013 05:14 PM
CD Transport: Laser Diode Guru?? HELP!!! bear Digital Source 44 20th August 2009 06:40 PM
Laser diode output lands? buddha Digital Source 8 25th September 2005 02:56 PM
FS: Sony "Esprit" TA-E901 and TA-N901 pre and power amp MJR Swap Meet 1 6th December 2003 07:55 PM


New To Site? Need Help?

All times are GMT. The time now is 08:47 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2