How can a CD be adjusted by eye pattern? - 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 9th June 2006, 09:41 AM   #1
diyAudio Member
 
PinkPanther-2's Avatar
 
Join Date: Jun 2006
Default How can a CD be adjusted by eye pattern?

I have a Philips CD482 (CDM 4/19, SAA 7310, 7220, TDA1543(>2*TDA1541 +OPA627U+AD829). But I have no service manual and will adjust the servo part. I know it's possible to adjust the focus and laser current (carefuly!) by eye pattern on the screen. So I have also a Tectronix 2225 (50MHz) i will be thankful for some hints for such a procedure.
  Reply With Quote
Old 10th June 2006, 04:14 AM   #2
diyAudio Member
 
Join Date: Jan 2001
Location: Malaysia
Adjust the eye pattern on your scope so that it has the highest and clearest signal. I know that some design; the scope gnd conncetion should be connected to Vref rather than the gnd/-ve of the CDP power supply.

Hope this helps.
  Reply With Quote
Old 12th June 2006, 07:32 AM   #3
diyAudio Member
 
PinkPanther-2's Avatar
 
Join Date: Jun 2006
Thank you vt4c!
This is very valuable information. I find also a very extensive information about CD repair here:

http://www.repairfaq.org/REPAIR/F_cdfaq.html[COLOR=blue]
  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
Pattern around tweeter... Godzilla Full Range 6 9th December 2008 12:17 PM
PCB pattern for 100W Amp r_s_dhar Solid State 49 20th August 2004 12:05 PM
Can I post this PCB pattern for the 25W Amp r_s_dhar Solid State 2 15th July 2003 06:03 PM
Adjusted bias for parallel output Paulr Solid State 10 7th July 2003 04:21 PM


New To Site? Need Help?

All times are GMT. The time now is 08:32 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