New Laser install into Sony CDP-991

Narks · 19th October 2010, 01:53 PM

My trusty old Sony CDP-991 is starting to skip too much, so I think its time for a new laser pickup, ie the KSS-240a.

I would appreciate any hints on how to replace this laser mechanism. I have some experience in electronics, but I do not have an oscilloscope. Is one needed? Is any adjustment of the three trimpots required after install? What is the function of the three trimpots? Interestingly I have improved the performance of the existing pickup by adjusting the trimpots somewhat randmomly without really knowing what they do.

Any help much appreciated. I can get a new laser quite cheaply, so would love to complete this refurb asap.

mlloyd1 · 19th October 2010, 04:41 PM

are you VERY sure it's the laser?
skipping can also be a sign that the spindle motor is failing.
i don't have experience with the sony cdp-991 though.
back to your original question, i would not suspect a laser replacement to be a "drop it in and go" repair. some calibration and adjustments would be needed to do it "right", along with special test disc$$$.

mlloyd1

mlloyd1

19th October 2010, 01:53 PM	#1
Narks diyAudio Member Join Date: Jul 2010	New Laser install into Sony CDP-991 My trusty old Sony CDP-991 is starting to skip too much, so I think its time for a new laser pickup, ie the KSS-240a. I would appreciate any hints on how to replace this laser mechanism. I have some experience in electronics, but I do not have an oscilloscope. Is one needed? Is any adjustment of the three trimpots required after install? What is the function of the three trimpots? Interestingly I have improved the performance of the existing pickup by adjusting the trimpots somewhat randmomly without really knowing what they do. Any help much appreciated. I can get a new laser quite cheaply, so would love to complete this refurb asap.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Sony CDP-D500 & CDP-2700	audiobot	Digital Source	2	20th December 2009 11:44 AM
Sony CDP-337ESD v Sony CDP-X33ES which is best?	eldarvanyar	Digital Source	0	10th January 2008 11:04 AM
WTB: SONY CDP-X3000ES or CDP-X5000ES	cartman	Swap Meet	0	18th April 2007 06:16 PM
Self fit a new laser in Sony CDP-227esd?	GJF	Digital Source	12	23rd October 2006 09:45 AM
laser optics for sony CDP-337ESD	jons	Digital Source	3	22nd July 2005 03:24 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	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

19th October 2010, 04:41 PM	#2
mlloyd1 diyAudio Member Join Date: Feb 2001 Location: illinois	are you VERY sure it's the laser? skipping can also be a sign that the spindle motor is failing. i don't have experience with the sony cdp-991 though. back to your original question, i would not suspect a laser replacement to be a "drop it in and go" repair. some calibration and adjustments would be needed to do it "right", along with special test disc$$$. mlloyd1 mlloyd1

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)