[TechAssist] Re: Sony Laser Kss-140A Adjustment
- From: Roger G <rogerfixit@xxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Wed, 26 Jan 2005 16:28:33 -0500
From the pix, looks like the same setup as the 140A
Thanx, Gary - just what I need.
Roger G.
Mr. Fix-It
Harrisburg, PA 17110 WebSite- http://mrfixit.netfirms.com
rogerfixit@xxxxxxxx
FAX 510-740-3641; Tel: 717-763-7098 (shop) 717-652-1703(home)
At 10:41 AM 1/26/2005, you wrote:
>Here is some info that will hopefully help. It is for KSS240A rather
>than 140A though.
>
>included is a link to a photo of the KSS240A.
>
>http://www.number63.ca/KSS240A.jpg
>
>
>-----------------------------------------------------------------
>
>
>Hi Gary.
> Try this :
>-scope the RF wave form at pin 40 of Servo IC 101 CXA1372 ,usually it's
>about 1 vpp to 1.2 vpp (good condition) .If it's under 1 Vpp ,the best way
>is replace the pickup KSS 240A.
>-you can make the pickup 's life last longer (several months) by increasing
>the laser current .
>-There are 3 trim pots on the KSS240A .The righthand is the laser curent
>adjust,the middle is focus bias adj,and the lefthand is tracking offset adj.
>-If the music still skipping ,you should increase the tracking gain trim pot
>RV101 (on the BD board) a little (clockwise).
> Hope this helps
>
>Vo Hung
>
>--------------------------------------------------------------------
>One way you could maybe Tell is place your DMM or Scope on each Pot by
>tacking a short buss wire on it , then as you insert a CD , observe if the
>DMM responds the same time with a reading as when the Red Laser turns on
>and
>is seen reflecting on the CD from a side view.
>
>I think there are (2) Pots for the Coils that raise / lower the Lense which
>set focus limits, then one other will be the laser Power level. I would not
>know 100% weather that is indeed so, but if the voltages on those 2 Pots
>coincide when the Laser is focusing, I would say my guess was good.
>
>Steve Hearns
>Technotronic Dimensions, NY [USA]
>WWW.TECHNOTRONIC-DIMENSIONS.COM
>1-877-817-9885 (Voice / Fax Toll Free - US Only)
>E-Mail: Steve@xxxxxxxxxxxxxxxxxxxxxxxxxxx
>
>----- Original Message -----
>From: "Gary McCartney" <gary@xxxxxxxxxxx>
>To: <techassist@xxxxxxxxxxxxx>
>Sent: Friday, September 24, 2004 5:52 PM
>Subject: [TechAssist] Sony CD laser assy KSS-240A, how to adjust gain?
>
>
>I have a Sony CD player which plays most discs fine but a few sputter
>before locking in and I'm thinking maybe just tweaking the gain on the
>laser assembly would help. This one has 3 trim pots. Which ones do I
>need to adjust, or is it a case where all 3 must be aligned and I
>shouldn't attempt it? This part is $60.00 CDN at my supplier so I doubt
>the customer would go for it. Probably cheaper at US sources but
>exchange, brokerage fee, etc. might not be worth it?
>
>----------------------------------------------------------------------
>
>
>Gary McCartney
>
>McCartney Electronics
>Guelph Ontario Canada
>Est. 1984
>email: gary (at) number63.ca
>
>
>
>
>
>
>
>
>Phil Bader wrote:
> > Roger, I've searched /everywhere/. I can't find a manual, training
> > manual,etc. No references to aligning it. No tips. Zippo.
> > I guess try tritronics and do a search for the manual. I don't see any
> > free sources out there.Sorry.
> > Phil Bader
> >
> > Roger G wrote:
> >
> >
> >>The model is STR-D159 (with the tape/cd part HST-d159).
> >>Not sure they would give info on the laser pots but would be nice
> >>thanx
> >>Roger G.
> >>
> >>Mr. Fix-It
> >>Harrisburg, PA 17110 WebSite- http://mrfixit.netfirms.com
> >>rogerfixit@xxxxxxxx
> >>FAX 510-740-3641; Tel: 717-763-7098 (shop) 717-652-1703(home)
> >>
> >>At 04:03 PM 1/24/2005, you wrote:
> >>
> >>
> >>
> >>>You gave the laser assy number, but if you can give me the model number
> >>>I maybe can shoot you a manual if i locate one in PDF, or at least cut
> >>>and paste the section you need.
> >>>Phil Bader
> >>>
> >>>Roger G wrote:
> >>>
> >>>
> >>>
> >>>
> >>>>Sony CD laser KSS-140A
> >>>>This unit has 3 adjusting pots - most have only one.
> >>>>Which one adjusts the laser output ?
> >>>>(What do the other 2 do??)
> >>>>Tried searching archives since I thought I read this but could not find
> >>>>TIA
> >>>>
> >>>>Roger G.
> >>>>
> >>>>Mr. Fix-It
> >>>>Harrisburg, PA 17110 WebSite- http://mrfixit.netfirms.com
> >>>>rogerfixit@xxxxxxxx
> >>>>FAX 510-740-3641; Tel: 717-763-7098 (shop) 717-652-1703(home)
> >>>>
> >>>>
> >>>>----------------------------------------------------------------------
> ---
> >>>>
> >>>>
> >>>
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> >>>
> >>>--
> >>>
> >>>Philip Bader
> >>>Jan Phyl TV Inc. (estab. 1976)
> >>>3420 Recker Hwy. Winter Haven, Fl. 33880
> >>>Fax (863) 299-8821
> >>>email: tjanphyl@xxxxxxxxxxxxxxx
> >>>
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