Question about Aiwa NSX-D9 Shelf System
LASER HAS BEEN RENEWED
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: AIWA CD Problems
Sounds like the lasers need a POT (potentiometer) adjustment. Tools you will need are a multimeter with Ohms (preferably digital) either a #1 or #00 and #2 philips screwdriver. You will need access to the bottom of the laser. On the units I've worked on the POT faces the back of the unit. It will look like a philips head screw in a square metal casing. You should not need to completely remove the CD tray assembly but you can if you wish though I recommend removing the tray bezel Look for two legs on the side of the POT casing that go to the laser PCB. Measure the resistance across the two legs for an initial reading. On mine it was exactly 1kOhm. Now take the #1 or #00 philip screwdriver and adjust the screw to lower the resistance. POT screws are typically EXTREMELY sensitive so 1/16 of a turn can make a big difference. Start by lowering it by about 20-25%. So if the initial reading was 1kOhm aim for 750-800Ohms and test. You should use several disks for testing. If your unit is capable of CD-R/RW playback then have those available as they are generally more difficult to read. If you have playback gradually increase the resistance 5-10% until the disk is no longer readable or struggles to read. Now lower the resistance again 5-10% and retest. If all works well reassemble and enjoy. It is necessary NOT to lower the resistance too much as it will shorten the life of the laser and if too low could damage the disks. If you must go lower than 25-30% the laser is not worth salvaging. Typically 10-15% is all that is required. If you need more detail I recommend doing a search for 'xbox POT adjustment' as the procedure is essentially the same for all lasers and some xbox sites have good pictures so you can see what your doing before you dive in. Total repair time per unit will be 1/2 - 1hr, mostly spent in all the testing. Hope this helps. Good luck
Posted on Jan 29, 2009
Most of those CDs they sell are just a gimmick, nothing can replace a good hand cleaning with a cue-tip done by taking the whole thing apart. Take it to the local technician to get it cleaned properly first and foremost, or do it yourself if you feel safe enough taking all this apart and cleaning a tiny fragile little lens with a cue-tip and windex yourself. If a good hand cleaning like that does not work, then it means the reader head itself is defective and need to be replaced. If this is the case, don't bother. A cheap head will go for around 200$ usually and sometimes more, and at the price you get a new complete system it will be better buying a whole new sound system.
Posted on Jul 07, 2009
replace lazer ever 2000 hours the display may have a dry joint on the 18 volt input ps the lazers are all the same in all the nsx moduls
Posted on Mar 23, 2010
Use VIDEO/AUX instead. MIC is for the smaller input signal that a microphone would typically produce.
Register and download the manual for free at retrevo.com
Use your PC soundcard controls to adjust the output to something useable (max?).
Posted on Apr 30, 2011
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