SCN Error On P90

I'M LOOKING FOR A TIP FOR REPAIRING AN 'SCN' ERROR,
UNIT DEMO WORKS FINE, KEYS HAVE NO OUTPUT. P90 MODEL

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Jun 11, 2009
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found cut wire
by: Anonymous

after disassembling, a good inspection found a cut wire in the harness from the keyboard to the processor board. the break was hidden by tape holding the wires in place, spliced and taped it and operation was restored.
also soldered smd components on the out put board for good measure

Jun 24, 2009
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same thing here
by: cozz

got a p90 with that same error- took it apart and found the wires going into the keyboard assembly get pinched somehow- huh sounds like a recall. Well at least you got lucky and it was only 1 wire, I have 3 that got cut, gotta figure which wire goes where, maybe I can get that harness from Yamaha- fat chance

Sep 30, 2014
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Yamaha P90 SCN error
by: Studiohire

We sent out a Yamaha P90 on a hire and while it was out the customer reported that the screen showed SCN and all he could get out of the keyboard was metronome and Demos.
On return we opened the keyboard and made sure no components were loose and pushed in every connector that we could see.
Screwed the casing back and turned on the power.
All the presets returned!

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stand for Yamaha P-90

by Jennifer
(Wichita, ks)

I recently bought a p-90 from a friend - but do not like the stand. I do not want a portable X-type stand that I bought with the keyboard. I want a stand that is like the L-85. I've searched sites and can't seem to figure out if the L-85 stand will work for the p-90 keyboard. link to view L-85 stand is below. Anyone?

http://www.andysmusiconline.com/photos/Yamaha-L85-Stand-2.jpg

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Dec 23, 2009
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Stand for Yamaha P 90
by: Alfred

Dear Jennifer: The following is part of Yamaha's description of the P 90:

"Slim and Lightweight Design. Made for musicians on the go and for studios and stages where space is tight, the P-90 offers heavyweight performance in a lightweight package. Weighing in at a mere 16.9 kg and measuring 28.5 cm deep, the P-90 can be easily hauled to gigs and placed in studios and on stages where ordinary digital pianos may not fit comfortably".

It seems the P 90 was not designed to be used on a heavy-type stand such as the L 85. This is not to say that the L 85 stand cannot be modified to suit the P 90. It might be possible, but securing the keyboard to the stand will probably be another matter. You would have to first check the bottom of the P 90 for threaded holes to secure it with screws (and adapt it) to the L 85 to suit. There is always of course the price fot the L 85.
An alternative might be to get a carpenter to custom make a stand for you. Again,you must first check the bottom of your keyboard to see if there are threaded holes for the securing screws, then (more importantly) find out how much the stand would cost to make it worthwhile. I uderstand the flimsy impression an "X" stand makes, but I'm sure you can see it's convenience for a keyboard such as yours. All this said, I wish you Season's Greetings and good luck.

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Yamaha p90 drivers

by Peter Hutchison
(Brockville)

where can I find p90 drivers for an iMac/

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Jun 27, 2010
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drivers
by: Dick Rector

Hi,

Drivers you should find on:
www.global.yamaha.comp/download/index

Dick

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Sticky key at Yamaha P90 digital piano

by Enrique Gomez
(Cochabamba, Bolivia)

Do you have a manual with instruction on how to open up a Yamaha P90 digital piano?

I would like to open it in order to repair a key that ocasionally remains pressed down.

Thank you,

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Jun 11, 2009
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how to open for service
by: Anonymous

I just opened one myself, put the unit upside down on a table or bench large enough to hold the two parts when seperated,there is a harness connecting the keyboard to the processor board and you don't wantto accidentally yank on it. remove the machine screws along the outside edges and along the back, on the end with the output connections there is one screw away from the edge towards the front that has to come out, it is into a support post. carefully flip the unit back over and slide the back and sides away from the keyboard. disconnect the harness at the processor brd if more room is needed

Sep 03, 2010
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Yamaha P90 Sticky notes, I FIXED IT!! NO BREAKS!
by: Anonymous

Ok, after you open the case like our previous friend showed on his diagram, here comes the trick.

Look at the first or last mechanisms, you can see everything on the side, try on these first!
You will see a small arrow on top of every key, if you insert a thin blade and carefully press on it, you will be able to lift the key from the inside side, do not pull hard, there is a flat metal spring that has to com out.

To remove the spring press in the same direction where the spring comes from (down), you will see that the spring looks like a fork (tuning)after you press down push it toward the front of the keyboard and it will com out, try on the side motes first!!

Then the only thing between the fix and you is the hammer, press it down the hammer into the foam while puling up the key from the front, there is a small plastic hammer piece that has to clear for the key to come out, easy to see on the side, I did it without braking anything.

Now look at the gray (on my Yamaha P90)stop on which the keys seat on at the front of each key, my gray rubber got fat and was not letting the key go up or down freely.

Get an exacto knife and remove the excess on its side and VOILA!!! is fixed, carefully put things back and good luck!!

If you want more details you can email me at costbuster2000@yahoo.com
Mike

Apr 11, 2012
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Success!
by: Anonymous

Excellent instructions! Got the sticky key fixed.

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3 pedal unit for Yamaha P 90?

by Art
(Mill Valley, CA)

Is there now (or ever has been) a 3 pedal unit for the Yamaha P90? I get conflicting answers, but usually in the negative. If the answer is yep, or positive, it'd certainly save me having to purchase another digital piano just for 3 working pedals. Being able to use, even sometimes combining, all 3 is important to me - as one can with a concert grand piano.
Art

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Feb 18, 2011
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No
by: Anonymous

You can buy a 3 pedal unit with an end that will fit in the P90. The problem is that the P90 only has a sustain hole, and the 3 pedal units (and functionality) require 3 holes--one for each of the options. P90 can only "do" sustain, and not the other options.

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Yamaha P90 play mode

by Buddy
(Wilmington, NC USA)

I recently bought a used Yamaha P90 in "mint" condition. The preset demo sounds play, but I cannot get the piano to make any sounds in play mode. I have read and re-read the manual and cannot find anything related to this problem. Please advise. Thanks.

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Jan 01, 2010
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P 90 Play Mode
by: Alfred

Dear Buddy: Try Initializing (Resetting) your unit as instructed in your manual. Get back to the Forum if further help is needed. Hopefully some other member, or I can add more info. Good luck.

Jan 02, 2010
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Reset
by: Buddy

Alfred,

I reset several times, but it did not work.

Thanks for your help.

Buddy

Jan 02, 2010
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P 90 Play Mode
by: Alfred

Dear Buddy: I take it you have tried both the partial and full Initaializing procedures? If so,
it's possible there is a problem with worn Underlay Pads (under the keys) or a circuit component problem which is not transmitting commands. I always recommend: a) NOT OPENING YOUR KEYBOARD. b) Contacting a (Yamaha authorized) keyboard technician to handle "internal" work, and my opinion is that you follow these suggestions, especially as your unit is in "mint" condition. Good luck.

Jan 03, 2010
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Yamaha P90 Problem
by: Buddy

Alfred,

I called Yamaha tech support and they recommended that I send it in for repairs.

THX

Buddy

Mar 12, 2012
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Answer to above
by: EaglesDerbyUK

Hi there, on this forum there is another post called "SCN" Error, this sounds very similar to your problem, give it a look. hope all works out well, and let us fellow P90 player know how it all goes.

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Transposing Yamaha P 90

by Linda
(Moncks Corner, SC)

Can you transpose on the Yamaha P 90? I was asked to make an offer on one but I needed to know if transposing is available

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Aug 20, 2009
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Transposing Yamaha P 90
by: Anonymous

Yes you can transpose on the P 90. It has many features, but make sure it's what you're looking for

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How do I hook up speakers for Yamaha P90?

by Carole
(Evansville, IN usa)

I have tried to hook up Yamaha P90 to Boston speakers and only get a faint sound. What am I doing wrong?

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Apr 24, 2010
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Speakers for Yamaha P90
by: Alfred

Dear Carole: Your unit should have a 1/4" HEADPHONE JACK (Socket)to which you would connect a 1/4" PLUG, the leads of which go to the Speaker(s)which (hopefully) are powered by an external amplifier. If this supposition applies, be aware that when connected, the onboard speaker(s) of your unit will be automatically muted, and will return to normal should you disconnect the 1/4" Plug. Hope this info helps. Thank you for contacting us, and please do not be shy to participate in this Forum again with any other comments/questions. Keep well.

Apr 03, 2012
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use the RCA jacks
by: Kozmo

A musician neighbor sold me his P-90 for $300.

Since I'm just learning all I did was to plug an old (Yamaha) receiver into it via the red & white RCA jacks with some speakers from a wrecked boom box.

Good enough for my practice at home.


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Yamaha P90 speakers

by Mark
(Novi, MI)

How do I hook up speakers to my Yamaha P90? Nothing fancy, just something I can hear while the kids are practicing the keyboards.

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Aug 24, 2010
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P 90 Speakers
by: Alfred

Dear Mark: One way is to link your unit to a home stereo system. You must have the appropriate patch cord leading from your unit to the system. The unit - I believe - has an Output socket (1/4" type) and the home stereo probably has RCA type Input Jacks.Such a connection would reproduce sound controlable through the system's volume control. When first connecting through this method, be sure to have the Volume Controls of both the unit and the home sdystem at moderate levels to avoid the loud pop emanting from the home system's speakers.Another way is to simply hook up your unit to Headphones which automatically mute the unit's speakers. Hope this helps. Thank you for your visit. Please come back if you have further questions.

Aug 25, 2010
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Yamaha P 90 Speakers
by: Anonymous

Dear Mark: Following my post, yesterday, the last three lines should read...."mute the unit's speakers. Keep either the home system or the headphone at a relatively low level permitting your kids' keyboards to still be heard, while you are enjoying your own P 90.

Aug 26, 2010
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Yamaha P 90 Speakers
by: Alfred

Dear Mark: Sorry. Forgot to ID myself in yesterday's addenda. Let me know if my interpretation of you original question is correct> Thanks.

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Yamaha P-90 Digital Piano - sticking note

by Russell Clifton
(Sydney Australia)

My 5 year old yamaha P-90 digital piano has developed a sticking note (B two octaves above middle C)...
This is annoying and I would like to fix it but not sure how involved it is...I am a home handyman and often fix other minor keyboard problems

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Mar 15, 2010
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Sticking Note
by: Alfred

Dear Russel: Your problenm is most likely a dirty or decaying Underlay Pad. 1) If in doubt, contact Yamaha Music Australia Pty., Ltd.
Level 1, 99 Queensbridge Street, Southbank
Victoria 3006, Australia
Tel: (61) 3-9693-5111 Fax: (61) 3-9699-2332
for closest repair tech.or parts. 2) Depending on how much you "love" your keyboard, you can DIY, If so, make sure to examine the unit (usually flipped over)CAREFULLY for securing screws etc. holding the clamshell housing together. 3) Once opened, the unit usually has Speakers and PCB's in one half (Steer clear of static-sensitive Components usually on PCB's).Other half contains the Keyboard Assembly. The Pads are located under this Assembly. Remove, clean or replace(EXACTLY in original position)
Reassemble unit, routing all cables as in original. Avove DIY steps are basic. Be sure to let us know what you do. Good luck.

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