Accessing the Keyboard on Clavinova PF (P-100)

by Carol Anne
(Placerville, CA (USA))

Top cover open and front of keyboard exposed

Top cover open and front of keyboard exposed

I needed to clean up an aging keyboard, to remove accumulated hair and "stuff" from the keyboard. This digital piano has a metal cover below and in front of the keys that can be removed, but there's a trick to make it easier.

Yamaha, being very good design engineers, have to attachment mechanisms: A "pinch" arrangement that clamps the keyboard to the particle board base, and five self-tapping screws. The "pinch" arrangement consists of three screws. If you look carefully, the three machine screws are on a line closer to the front of the keyboard, and the self-tapping screws are above 1/4" further back.

Remove all five of the self-tapping screws.

LOOSEN the three machine screws (turn them counterclockwise not more than two turns). That allows the metal cover to come cleanly off, and leaves the machine screws threaded in the sheet metal, so it's easier to reinstall.

After you're done, reinstall the sheet metal, rescrew the five self-tapping screws, and finally TIGHTEN the three machine screws to "pinch" the cover to the particle board.

Photos follow:

Comments for Accessing the Keyboard on Clavinova PF (P-100)

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Nov 05, 2011
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HOW CAN I DISASSEMBLE SINGLE KEYS ON YAMAHA CLAVINOVA PF P-100?
by: Domenico

Hi, does someone know how to disassemble single keys on Yamaha Clavinova PF P-100?

Oct 27, 2011
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HOW DISASSEMBLE THE SINGLE KEYS
by: Anonymous

Hi, does someone know how disassemble the single keys or how obtain the service manual of this piano? Thanks.

Jun 14, 2010
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With No Heat...
by: Carol Anne

...and red lights on, I'd think the power supply is possibly hosed. That would be the circuit board just adjacent to the Left speaker, if memory serves. You probably have a good +5VDC output (aka "rail"), because the LED's are illuminated. But, they're red, which suggests they're warning you that one or more other voltages at not within spec.

But, I'm speculating.

Jun 14, 2010
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Sounds went dead for Clavinova P100
by: Sailorman

Apologies Carol Anne..I'd forgotten to identify myself too! Thanks for the excellent post and helpful advice.
Have a good day!

Jun 14, 2010
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Sounds went dead for Yamaha Clavinova P100
by: Anonymous

Hey Carol Anne..thanks for your prompt reply, really appreciates it! I will check out your suggestions as soon as I can. So far, there is no heat generated at all even when I'd left the power on for 24 hours and all the red lights are on Voice/Utility; Transpose; Split and Effect after the sounds went dead. just hope it is simply the connector or battery problem. Thanks once again!

Jun 13, 2010
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Debugging Without Hands-on...
by: Carol Anne

...is always fraught with peril. Your first test: 99% of electronics' intermittent problems are connectors. Try making sure all connectors are firmly seated.

You may also find that the unit "dies" because the battery is dead. It's a common CR3025, the same used in most desktop/tower computers.

After the sound stops, check for light and heat: What lights are still on? (If none, it's probably the power supply...or a loose power cord from the wall.). If the lights are on, check with you open palm for where the heat is. You should NOT feel anything that would burn you (but keep your hand at least 1/2" away from electronics, to make sure), but you may also find that large metal masses (e.g., aluminum sheets or assemblies) may be quite hot, as these "heat sinks" draw heat from the components so flowing air can cool them.

Intermittent problems may require the tender touch of someone who knows their way around an electronics bench to diagnose. But, start with these steps, and report what you've found; maybe someone can help you narrow it down.

Jun 13, 2010
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Yamaha Clavinova PF P100
by: Sailorman

Hi Carol Anne! Your post is really helpful! I would like to seek your advice with my clavinova. Initially when I switched on the power, all the keys can be played normally with sound but this lasted for only a few seconds before everything went dead. Do you know what is wrong with it? Is this a power connect problem? Thanks in advance for your help!

Apr 07, 2010
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Replacing the Battery
by: Carol Anne

In some models of the Clavinova PF P-100, Yamaha SOLDERED THE @#$%%)* BATTERY IN (How STUPID is that?).

If you're one of the unlucky ones, I recommend you contact someone who knows how to repair printed circuit boards, and have them solder in place a simple battery holder (e.g., see a photo of a common one at http://www.radioshack.com/product/index.jsp?productId=3060977). Then, you can change the CR2032 battery anytime you need to.

These are the same batteries used in most computers (to keep the clock ticking while power's off, so date and time remain correct), and they're common as dirt. You should be able to find them at any photo section of a pharmacy. They should normally last five years or so.

If your battery dies, it can require you to re-input all your custom settings each time you turn it on.

Apr 07, 2010
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PF (P 100)
by: Alfred

Dear Carol Anne: Your complete article is so beautifully described with its photos it beomes a true pleasure to read. Once again I salute you.
Regards. Alfred

Apr 07, 2010
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How to Open the Yamaha Clavinova PF P-100 for Service
by: Mantius

New post by Carol Anne added: How to Open the Yamaha Clavinova PF P-100 for Repairs

It includes additional details and photos.


Apr 04, 2010
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Yamaha Clavinova photos
by: Mantius

Carol Anne, sorry. This one missed me.

Very soon you will be able to add multiple photos to a post. The software is currently being worked on.

I have sent you an email.

Thanks a lot for your patience.


Jan 18, 2010
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Your Wonderful Post re P-100
by: Alfred

Dear Carol Anne: Following my message of 1/13/2010, Today I submitted a description of my experience with a PSR 273. It may interest you. Keep well.

Jan 13, 2010
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PF (P 100)
by: Alfred

Dear Carol Anne: Mantius, the Forum's Webmaster is very good at responding to questions, but it could take about two days. As you can imagine. the volume must be heavy, and you will hear from him. The two separate posts you submitted are fantastic, and if your intention is to help the Forum with additional info, I'm sure all members look forward to learning about your experience.
I just acquired a used PSR 273 in mint condition, but one key is "dead" (most likely the underlay pad) and I intend to follow your example by recording disassembly, photos, etc. Normally my recommendation is to have any service done by a qualified technician, but in this case I'm going to DIY and hopefully provide members with some useful guidance. Keep well.

Jan 13, 2010
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I have more photos...
by: Carol Anne

...and I've asked the owner of this forum for a way to post them (each article can apparently have only one photo, and they're not allowed in responses), and gotten no response.


Jan 11, 2010
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How to........
by: Dick Rector

GREAT STUFF Carol Anne!

And an invitation to other forum-members or readers if they have pictures and a clear disription 'how to solve a problem'.

Thanks again, well done!
Dick Rector
Bali (Indonesia)

Jan 11, 2010
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Yamaha P 100
by: Alfred

Dear Carol Anne: Sorry, forgot to identify myself. Once again thanks for most interesting and helpful post!
Alfred

Jan 11, 2010
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PF (P 100)
by: Anonymous

Dear Carol Anne: Bravo, and congrats on an excellent submittal!!! Your contribution is sure to help other P 100 DIY owners.
As an amateur DIY nerd, this info is fantastic and I've made due note. Thanks for a most helpful post. Regards.

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