YAMAHA CS-15D Schematics / Service Manual

spybar · 1st December 2011

Hello dear mates,

So I bought two days ago a part working YAMAHA CS-15D. Joy!
Yamaha CS-15D | Vintage Synth Explorer

It had some problems with presets & non-working keys.

The tech guy (I'm grateful for him) cleaned it, set almost everything up, but he said that the presets' volume level is changing from preset to preset. He need Schematics / Service Manual in order trying fixing it.

I tried ti find... but only found Owner Manual... :(

Do you have, pretty please, YAMAHA CS-15D Schematics / Service Manual?

Truly, as always, appreciate your help!

CS-15D Demonstration. - YouTube

DEC 10th 2011 UPDATE:
So I emailed YAMAHA JAPAN, and asked for help... if they please would be kind to send my service manual.
This was their (quick) reply:

"Thank you for your inquiry about our products.

We are very sorry that we can't provide you a service manual of CS-15D.
It's confidential material in YAMAHA.

And CS-15D is very old product and we Don't have the spare parts. So it is very difficult that we repair it.

Thanks and best regards
YAMAHA CORPORATION
OSAKA Service center
"

What should/can I do?
It may be a small thing to fix, but I need the service manual to fix it... :(

Appreciate any input!

spybar · 5th December 2011

Maby someone can help me in some way...? Pretty please.

Appreciate it!

waveterm · 5th December 2011

Never seen schematics for this one on the net.

Contact Yamaha in your country, maybe they can provide you with a copy.

WT

Futureman84 · 5th December 2011

I wish I could help.

I have a hard copy of the CS5's service, but that's nothing like a 15.

Your best bet would see who is selling one and buy it.

Mike

maisonvague · 6th December 2011

Quote:

Originally Posted by spybar

Do you have, pretty please, YAMAHA CS-15D Schematics / Service Manual?

...

CS-15D Demonstration. - YouTube

In the comments section of this demo video, a poster writes that he has the Service Manual. I would try contacting that user on YouTube.

spybar · 9th December 2011

Thanks for your replies!

UPDATE:
So I emailed YAMAHA JAPAN, and asked for help... if they please would be kind to send my service manual.
This was their (quick) reply:

"Thank you for your inquiry about our products.

We are very sorry that we can't provide you a service manual of CS-15D.
It's confidential material in YAMAHA.

And CS-15D is very old product and we Don't have the spare parts. So it is very difficult that we repair it.

Thanks and best regards"

What should/can I do?
It may be a small thing to fix, but I need the service manual to fix it... :(

Appreciate any input!

maisonvague · 10th December 2011

Quote:

Originally Posted by spybar

What should/can I do?
It may be a small thing to fix, but I need the service manual to fix it... :(

Appreciate any input!

I can't find the comment now (maybe it got deleted?) but I remember reading it. YouTube user rga24yt specifically mentioned he had a copy of the service manual. Again, I would try contacting him.

spybar · 10th December 2011

Quote:

Originally Posted by maisonvague

I can't find the comment now (maybe it got deleted?) but I remember reading it. YouTube user rga24yt specifically mentioned he had a copy of the service manual. Again, I would try contacting him.

Maisonvague, thank you so much for your kindness. I really appreciate it!

dougt · 11th December 2011

You may find you don't need the service manual to fix it. A good tech should have basic knowledge of analog synth circuits and likely component failures (tantalum caps, Yamaha IGxxxx chips, 70s CMOS 4xxx chips) and not need a service manual for everything.

spybar · 11th December 2011

Quote:

Originally Posted by dougt

You may find you don't need the service manual to fix it. A good tech should have basic knowledge of analog synth circuits and likely component failures (tantalum caps, Yamaha IGxxxx chips, 70s CMOS 4xxx chips) and not need a service manual for everything.

Thanks for your reply.
The tech guy has experience with vintage synths (he fixed well my Korg MS-20 & MS-10).
The tech guy said that the problem is in the organ/presets part of the CS-15D, and that this instrument was never opened before. He fixed all the problems, now the only (important) thing is that the presets volume level in uneven...

He wasn't sure about fixing the organ part... so he said, before he try, it would be on the safe side to have the service manual.

Again, appreciate any & every help!

1st December 2011	#1
spybar Gear Head Joined: Feb 2009 Posts: 74 Thread Starter	YAMAHA CS-15D Service Manual + disappointing YAMAHA JP Service center Hello dear mates, So I bought two days ago a part working YAMAHA CS-15D. Joy! Yamaha CS-15D \| Vintage Synth Explorer It had some problems with presets & non-working keys. The tech guy (I'm grateful for him) cleaned it, set almost everything up, but he said that the presets' volume level is changing from preset to preset. He need Schematics / Service Manual in order trying fixing it. I tried ti find... but only found Owner Manual... :( Do you have, pretty please, YAMAHA CS-15D Schematics / Service Manual? Truly, as always, appreciate your help! CS-15D Demonstration. - YouTube DEC 10th 2011 UPDATE: So I emailed YAMAHA JAPAN, and asked for help... if they please would be kind to send my service manual. This was their (quick) reply: "Thank you for your inquiry about our products. We are very sorry that we can't provide you a service manual of CS-15D. It's confidential material in YAMAHA. And CS-15D is very old product and we Don't have the spare parts. So it is very difficult that we repair it. Thanks and best regards YAMAHA CORPORATION OSAKA Service center " What should/can I do? It may be a small thing to fix, but I need the service manual to fix it... :( Appreciate any input! __________________ Rhodes Suitcase MKII, Korg MS-20, Korg MS-10, Microkorg XL, Korg Monotribe, Korg Kaossilator Pro, YAMAHA CS-01, Yamaha U1 Upright Piano, Roland Fantom G7, Roland TR-606, Roland JV-1000, x0xb0x, DSI Tetra, Mopho Keyboard, Grendel Drone Commander.

5th December 2011	#3
waveterm Lives for gear Joined: Jan 2004 Posts: 1,505	Never seen schematics for this one on the net. Contact Yamaha in your country, maybe they can provide you with a copy. WT __________________ Just a guy with a bunch of blue things....

11th December 2011	#9
dougt Lives for gear Joined: May 2010 Location: Silicon Valley, CA Posts: 709	You may find you don't need the service manual to fix it. A good tech should have basic knowledge of analog synth circuits and likely component failures (tantalum caps, Yamaha IGxxxx chips, 70s CMOS 4xxx chips) and not need a service manual for everything. __________________ Doug http://www.synthparts.com

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5th December 2011	#4
Futureman84 Gear addict Joined: May 2011 Location: Australia Posts: 447	I wish I could help. I have a hard copy of the CS5's service, but that's nothing like a 15. Your best bet would see who is selling one and buy it. Mike

9th December 2011	#6
spybar Gear Head Joined: Feb 2009 Posts: 74 Thread Starter	Thanks for your replies! UPDATE: So I emailed YAMAHA JAPAN, and asked for help... if they please would be kind to send my service manual. This was their (quick) reply: "Thank you for your inquiry about our products. We are very sorry that we can't provide you a service manual of CS-15D. It's confidential material in YAMAHA. And CS-15D is very old product and we Don't have the spare parts. So it is very difficult that we repair it. Thanks and best regards" What should/can I do? It may be a small thing to fix, but I need the service manual to fix it... :( Appreciate any input!