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pbiancardi · **Posted:** 29 Nov 2017, 12:56

So I bought a McIntosh MLD-7020 (CLD-97) that needed a new laser pickup, I brought it to a local McIntosh authorized service center that claimed they could do the work but when I got it home it became clear that they did not know how. The pickup has been swapped by the service center (with one from a 2080 that I provided) and it will play after 30-45 seconds of searching but with no chapters so I know everything CAN work but needs to be aligned. In messing with it I did get it to play once with chapters so I am very confident that it can work.

In a perfect world I would send out to Kurtis but he is busy so I figure rather than continuing to bother him with email questions (thanks for always answering Kurtis) I will post here and maybe we can all learn together. We are fast running out of options so we are forced to learn ourselves if we as a community want to keep these players running. This might take a long time but hopefully by the time I am done this thread has a lot of information in it that everyone can use (since I am starting basically from scratch maybe this can help others that are also). I will document my efforts with pictures and video in the hope that it ends up helping others in the future. If I can get this one working I will do a similar thread for the 704 type players which by all accounts are much easier to align.

I have -

1. Pioneer service remote.
2. 8" Test Disc GGV1239.
3. CLD-97 service manual
4. McIntosh MLD-7020 in need of alignment

I need -

1. Oscilloscope / Waveform Monitor
2. Skill (which I can hopefully develop)

So question #1 is which oscilloscope do I get? The guy that did all of the CLD-99 mods on YouTube has a waveform monitor is that what I need or an oscilloscope?

Options -
https://www.ebay.com/itm/Tektronix-1740A-Waveform-Vector-Monitor/122549065994?epid=1200610405&hash=item1c887e590a:g:bAEAAOSwbiFZQa8Z
https://www.ebay.com/itm/GW-Instek-GDS-1102-Digital-Oscilloscope-100MHz-2-Channel/292345280711?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2055119.m1438.l2649
https://www.ebay.com/itm/GW-INSTEK-Oscilloscope-GOS-6102-2-Channel-100MHz/182918834242?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2055119.m1438.l2649

Are any of these appropriate / does analog or digital matter?

Question #2 is the coarse / fine grating adjustment, I cannot for the life of me figure out where the adjustment point is? I see in the service manual where it shows and I have the old pickup in my hand to look at but I cannot figure it out? Kurtis has told me its like an arm with a slot but I have been poking around the thing for hours and still cannot locate it. The other adjustment points seem very easy to get to but this one I cannot figure out, here is pic from service manual -

https://s8.postimg.org/my56kvmol/Capture.jpg