SY99 Capacitor list/ Cap Map

The Yamaha SY99 is a synthesiser combining frequency modulation synthesis (branded as Advanced FM) and sample-based synthesis (branded as Advanced Wave Memory 2) and the direct successor to Yamaha's SY77/TG77

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HeavyNova
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SY99 Capacitor list/ Cap Map

Unread post by HeavyNova » Wed Feb 12, 2014 3:22 pm

Hello,

Just curious whether anyone has a complete list of the specific capacitors used on the SY99 or a Cap Map, diagram(s), or other links/photos from a teardown that illustrate the location of various boards, and internals with good close-up shots.

I'd like to study the innards for awhile before cracking the instrument open. At some point, I will be opening the SY to perform repairs, mods, cleaning. I want to minimize my down time and unfamiliarity by studying the layout before hand (as much as possible) Thanks in advance.
SY99

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Re: SY99 Capacitor list/ Cap Map

Unread post by Miks » Wed Feb 12, 2014 7:07 pm

How about taking a look into the service manual...? :wink:
My (key related) gear (in alphabetical order):
Kawai: K1 II
Korg: M1 (up'd to EX, w/ 'Cool Blue'), M1REX (w/ 'Cool Blue'), Poly-800
Roland: D-50, D-110, D-550, PG-1000
Yamaha: AW1600, DX7IID (w/ 'Cool Blue'), EX5R, RM50, RX5, SY99 (w/ 'Cool Blue'), TG500, TX-802, YMM2
Sector101: SYEMB05 (5x), SYEMB06 (3x), EXFLM2 (1kit), MCD Sweet16 (1x), WaveBlade 8MB Card (1x) & 1x Programmer Unit for WaveBlade


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Re: SY99 Capacitor list/ Cap Map

Unread post by Saul » Wed Feb 12, 2014 10:02 pm

I'm guessing he would have looked in the service manual if he had one? Do we have one on site somewhere? I can't remember if anyone posted a link.
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Re: SY99 Capacitor list/ Cap Map

Unread post by db7 » Wed Feb 12, 2014 11:42 pm

Scans of the service manual and schematics have been readily available at various sites that can be found with the usual methods. However, there is an important caveat that, while those are fine for the main service manual and the parts list, etc., they are not much worth the search for the schematics: those were scanned in pieces in a very haphazard way, causing some sections to be missing altogether and the others to be in the wrong order anyway.

I responded to this by buying a physical original edition of the document, which cost me a pretty penny thanks to the habits of manual hoarders on eBay but, nonetheless, is a nice thing to unfold and admire.

I was going to scan my copy for the benefit of other users, but someone on or via the 77/99 group on Facebook did that before me: https://www.facebook.com/groups/yamahas ... 821687753/ Perhaps Saul can re-host that here, especially seeing as one must be logged into Facebook to get it from that link. As it includes the other documents that weren’t malformed in the previous archive, I think it is best to host only this newer, complete version, rather than both. I have downloaded the file, so I can submit it if I am provided with credentials and/or guidance on how to do so.

Needless to say, the parts list and schematic will cover any curiosities you might have about the values of capacitors and other components. As for photographs, aside from Google Images, try these locations: http://www.baxweb.com/SY99/yamaha_sy99_ ... ir_tut.htm and http://www.xfactory-librarians.co.uk/Do ... pgrade.pdf I have had my SY99 open and disembowelled far too many times, so there’s a fair chance I’ll remember various details, should you feel like asking anything more specific than what is covered at all of the above locations.

What is worth mentioning, althought the photos should make it clear, is that things inside the SY99 are very busy. This is such a complex machine with so many interconnected pieces that I somewhat marvel at how it ever functions at all! For the same reasons, the process of dis- and re-assembly should be expected to be at least mildly arduous, and in this vein, your idea of studying in advance is very prudent.

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Re: SY99 Capacitor list/ Cap Map

Unread post by Saul » Thu Feb 13, 2014 12:10 am

Nice one Daniel. Thanks for posting that info and yes I think we should definitely host that manual here along with as many service documents and images as we can find. That reminds me, I still have not sorted out the upload on the front of the site yet! Will see if I can do that tomorrow and sort you out with upload permissions.

atb
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Re: SY99 Capacitor list/ Cap Map

Unread post by db7 » Thu Feb 13, 2014 1:04 am

Great! Until then, I have uploaded the aforementioned archive from Facebook, which as I said notably contains properly complete and formatted scans of the schematics for a change, to a publicly accessible location: http://www.sendspace.com/file/yz1r5n

Things not included in the above archive are the MIDI Data Format manual and the Operating Manual (a.k.a. normal owner’s manual), which are available at the expected place on Yamaha’s own site: http://download.yamaha.com/search/produ ... _id=623462

For posterity/reference, and just in case anything except the schematic might be of better quality in certain places, the original scans of the Service Manual to which I referred above are available, among other places, here: http://chrisarndt.de/files/yamaha/sy99/

I guess the best thing to do is to bundle as many documents as possible and offer them in a folder here at YFUK, perhaps including different scans of the same thing if you think there’s a point.

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Re: SY99 Capacitor list/ Cap Map

Unread post by HeavyNova » Thu Feb 13, 2014 5:29 am

Thanks for all these links! I tried them all. I am going to join that FB SY99 usergroup and have downloaded the original Service Manual from the chrisarndt site you posted. Watch out for that sendspace link. I tried downloading the schematics but instead of a file, it was an application that my antivirus software detected as a Trojan Horse. I could've tried to go through with the install but was afraid to since it didn't seem kosher.
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Re: SY99 Capacitor list/ Cap Map

Unread post by Miks » Thu Feb 13, 2014 7:54 am

HeavyNova wrote:
Watch out for that sendspace link
I just downloaded that file from the sendspace link and it works fine! No malware-warnings or other suspicious software were found and it unpacks without problems.

The scans are in excellent quality - thank you very much for making this SM available! :mrgreen:
My (key related) gear (in alphabetical order):
Kawai: K1 II
Korg: M1 (up'd to EX, w/ 'Cool Blue'), M1REX (w/ 'Cool Blue'), Poly-800
Roland: D-50, D-110, D-550, PG-1000
Yamaha: AW1600, DX7IID (w/ 'Cool Blue'), EX5R, RM50, RX5, SY99 (w/ 'Cool Blue'), TG500, TX-802, YMM2
Sector101: SYEMB05 (5x), SYEMB06 (3x), EXFLM2 (1kit), MCD Sweet16 (1x), WaveBlade 8MB Card (1x) & 1x Programmer Unit for WaveBlade


http://rescuer-uslar.de/
https://www.facebook.com/Rescuer.Uslar/

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Re: SY99 Capacitor list/ Cap Map

Unread post by Saul » Thu Feb 13, 2014 8:27 am

Yeah I think there are two files and it depends on your browser security as to whether the second one pops up. The second file is a supposed download manager, which of course we definitely don't want and I would guess it trips your anti virus because it needs certain permissions in order to open and keep open a download window? Never a good idea because even if it's genuine it opens a door direct into your system. Great links though and hopefully I will get time to stick the content in the downloads section today.
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Re: SY99 Capacitor list/ Cap Map

Unread post by HeavyNova » Thu Feb 13, 2014 4:17 pm

Yes! Got it. Thanks so much! A lot of valuable information here. Thanks for sharing.
SY99

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Re: SY99 Capacitor list/ Cap Map

Unread post by db7 » Thu Feb 13, 2014 4:42 pm

You’re welcome!

A correction to something I said earlier: the MIDI Data Format manual is indeed included in the new archive of scans from Facebook: it has been tacked onto the end of SY99_Test2_C.pdf, which I had just assumed—logically, I like to think!—was only the guide to the test mode and nothing more. So, the new archive seems to have everything.

As for the doubts about SendSpace, the issue is that it’s like most file-hosting sites nowadays—regrettably—in the sense that the real link, which we want, is nestled ambiguously among a tonne of fake ‘download links’ that try to shoehorn (at-best-)crapware onto the unsuspecting user’s computer. I have gotten used to this and can usually identify the real link, but it’s not something we should have to put up with. I only used SendSpace as it was the first thing that came to mind in a rush. In retrospect, Mega.co.nz would have been a better choice, IIRC. Still, the real link does work and is virus-free and will hopefully be adequate for everyone until Saul gets the download hosted here.

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Re: SY99 Capacitor list/ Cap Map

Unread post by jhulk » Tue Feb 18, 2014 11:35 pm

i can host anything on my dropbox and only 1 direct link if any thing needs to be hosted

i already host a lot of things for other yahoo groups who dont have the space

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Re: SY99 Capacitor list/ Cap Map

Unread post by Saul » Wed Feb 19, 2014 12:21 am

Manual is in the downloads section on the front of the site now :)
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Re: SY99 Capacitor list/ Cap Map

Unread post by HeavyNova » Thu Aug 14, 2014 4:54 pm

Has anyone gone to the trouble of pre-emptively replacing their capacitors before any have a chance to unknowingly lose capacitance, leak and/or corrode the innards and traces of pcb's? Knowing that electrolytic caps have a finite lifespan, some will gradually lose capacitance while others may leak or explode. It's not a question of "if" but "when" and whether they will cause damage to their surrounding areas. As a fun exercise, I recently re-capped (44!) an original Sega Genesis/Megadrive from 1989. It worked well enough before the repair with the exception of scratchy audio. The Genesis used the now legendary Yamaha YM2612 FM sound chip (as used in the DX7) and appeared to be having trouble expressing its true characteristic nature.. After purchasing a $3.00 cap kit and painstakingly replacing all of them in a labor of love, I was astounded how much crisper the audio became. Also, the picture became noticeably more vibrant and less 'muddy'.

This leads me to wonder whether my SY99 (while completely functional) is no longer actually at 100% manufacturer specs. Clearly, it doesn't have to be in order to continue to be an enjoyable instrument to play for years to come, but for argument's sake I am just curious about gradual degradation of internal electronic components (namely capacitors) and am wondering if anyone else has anything to say? Fast forward the clock forty years from now. Aside from other wear and tear (floppy belts, Mains power supply, dead batteries & LCD, stuck keys, unresponsive buttons, etc. what would the Internals be like and which would undoubtedly be first-in-line for replacement? Some electronic components are much more durable and long-lasting than others..I want to ensure the instrument's longevity for decades to come.
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Re: SY99 Capacitor list/ Cap Map

Unread post by Derek » Thu Aug 14, 2014 6:48 pm

I have never done this for any of my synths including my SYs, or my anchient DX7II and CS15 before they were sold.

If it aint broke..... :)
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