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2014-12-30 by Brad Harper
Hi All, I am looking for a Service Manual and Schematics for MarkII DKC100R I am Having a "PWM over" error, shortly after starting playback, so I am looking for a Service Manual with Schematics for the Solenoid Power supply, and any good advice on tests, and what to look for. That's a good starter discussion. Thanks for your Help. Brad Brad Harper Bharper33@...
2014-12-30 by MixMeisterBob
<http://yamahaden.com/resources-2/item/281-mark-ii-manual> http://yamahaden.com/resources-2/item/281-mark-ii-manual
From: disklavier@yahoogroups.com [mailto:disklavier@yahoogroups.com] Sent: Tuesday, December 30, 2014 2:36 AM To: disklavier@yahoogroups.com Subject: [disklavier] Service Manual and Schematics for MarkII DKC100R Hi All, I am looking for a Service Manual and Schematics for MarkII DKC100R I am Having a "PWM over" error, shortly after starting playback, so I am looking for a Service Manual with Schematics for the Solenoid Power supply, and any good advice on tests, and what to look for. That's a good starter discussion. Thanks for your Help. Brad Brad Harper Bharper33@... <mailto:Bharper33@...>
2014-12-30 by Carol Beigel
This could be a damper pedal solenoid out of adjustment. When it heats up it shuts down the entire system. If it was a power supply it probably would not start to play at all. An experienced Disklavier tech is best equipped to make this adjustment. Otherwise you will find it in the service manual or the maintenance manual instructions how to do this. Carol Beigel
> On Dec 30, 2014, at 8:15 AM, 'MixMeisterBob' mixmeisterbob@... [disklavier] <disklavier@yahoogroups.com> wrote: > > > > http://yamahaden.com/resources-2/item/281-mark-ii-manual <http://yamahaden.com/resources-2/item/281-mark-ii-manual> > > From: disklavier@yahoogroups.com <mailto:disklavier@yahoogroups.com> [mailto:disklavier@yahoogroups.com <mailto:disklavier@yahoogroups.com>] > Sent: Tuesday, December 30, 2014 2:36 AM > To: disklavier@yahoogroups.com <mailto:disklavier@yahoogroups.com> > Subject: [disklavier] Service Manual and Schematics for MarkII DKC100R > > > Hi All, > > I am looking for a Service Manual and Schematics for MarkII DKC100R > > I am Having a “PWM over” error, shortly after starting playback, so I am looking for a Service Manual with Schematics for the Solenoid Power supply, and any good advice on tests, and what to look for. > > That’s a good starter discussion. > > Thanks for your Help… Brad > Brad Harper > Bharper33@... <mailto:Bharper33@...> > > >
2014-12-30 by Brad Harper
Thanks Carol, Could this have been caused by moving the piano to a new location? I did not have this problem until the piano was moved. It was in storage for about 6 months. This link does not contain a Service manual though, is there still one more manual? Thanks again… Brad
From: "Carol Beigel carol@... [disklavier]" <disklavier@yahoogroups.com> Reply-To: <disklavier@yahoogroups.com> Date: Tuesday, December 30, 2014 at 10:46 AM To: <disklavier@yahoogroups.com> Subject: Re: [disklavier] Service Manual and Schematics for MarkII DKC100R This could be a damper pedal solenoid out of adjustment. When it heats up it shuts down the entire system. If it was a power supply it probably would not start to play at all. An experienced Disklavier tech is best equipped to make this adjustment. Otherwise you will find it in the service manual or the maintenance manual instructions how to do this. Carol Beigel On Dec 30, 2014, at 8:15 AM, 'MixMeisterBob' mixmeisterbob@... [disklavier] <disklavier@yahoogroups.com> wrote: http://yamahaden.com/resources-2/item/281-mark-ii-manual From: disklavier@yahoogroups.com [mailto:disklavier@yahoogroups.com] Sent: Tuesday, December 30, 2014 2:36 AM To: disklavier@yahoogroups.com Subject: [disklavier] Service Manual and Schematics for MarkII DKC100R Hi All, I am looking for a Service Manual and Schematics for MarkII DKC100R I am Having a “PWM over” error, shortly after starting playback, so I am looking for a Service Manual with Schematics for the Solenoid Power supply, and any good advice on tests, and what to look for. That’s a good starter discussion. Thanks for your Help… Brad Brad Harper Bharper33@...
2014-12-30 by Carol Beigel
Is this a grand piano? Carol Sent from my iPhone
> On Dec 30, 2014, at 11:54 AM, Brad Harper bharper33@... [disklavier] <disklavier@yahoogroups.com> wrote: > > > > Thanks Carol, > > Could this have been caused by moving the piano to a new location? I did not have this problem until the piano was moved. It was in storage for about 6 months. > > This link does not contain a Service manual though, is there still one more manual? > > Thanks again… Brad > From: "Carol Beigel carol@... [disklavier]" <disklavier@yahoogroups.com> > Reply-To: <disklavier@yahoogroups.com> > Date: Tuesday, December 30, 2014 at 10:46 AM > To: <disklavier@yahoogroups.com> > Subject: Re: [disklavier] Service Manual and Schematics for MarkII DKC100R > > This could be a damper pedal solenoid out of adjustment. When it heats up it shuts down the entire system. If it was a power supply it probably would not start to play at all. An experienced Disklavier tech is best equipped to make this adjustment. Otherwise you will find it in the service manual or the maintenance manual instructions how to do this. > > > Carol Beigel > >> On Dec 30, 2014, at 8:15 AM, 'MixMeisterBob' mixmeisterbob@... [disklavier] <disklavier@yahoogroups.com> wrote: >> >> >> >> http://yamahaden.com/resources-2/item/281-mark-ii-manual >> >> From: disklavier@yahoogroups.com [mailto:disklavier@yahoogroups.com] >> Sent: Tuesday, December 30, 2014 2:36 AM >> To: disklavier@yahoogroups.com >> Subject: [disklavier] Service Manual and Schematics for MarkII DKC100R >> >> >> Hi All, >> >> I am looking for a Service Manual and Schematics for MarkII DKC100R >> >> I am Having a “PWM over” error, shortly after starting playback, so I am looking for a Service Manual with Schematics for the Solenoid Power supply, and any good advice on tests, and what to look for. >> >> That’s a good starter discussion. >> >> Thanks for your Help… Brad >> Brad Harper >> Bharper33@yahoo.com > > > >
2014-12-30 by Brad Harper
Carol, A little more background. This problem has gotten worse over the last 10 Months. When the problem first started, the piano would play for about 40 Minutes, before the problem occurred. I could actually play an entire Pianosoft diskette before it started happening. Around this time, I also upgraded the firmware in the DKC100R controller, because it would not read IBM formatted diskettes. The firmware fixed that problem, after a couple tries(bad firmware on the shelf). I started using the system more because I could buy titles that I could download from Yamaha and play. My system has the MU50 sound module as well. The problem slowly got worse, with shorter and shorter play times, before the error occurred. Now the system will fault at the first song on a disk. I took the cover off the foot pedal solenoid mechanism, and disconnected the solenoids, but same issue. Watching the solenoids, it seems like the power to them is weak, as the sustain solenoid, only actuated about half of it’s travel. I disconnected the linkages, and it would travel the whole distance. Still no help, about 30 seconds of song play. I truly think the power supply is not working up to capacity, and then causing the shutdown. That is why I am looking for a schematic, and service manual, so I can test it, and see if it needs to be reworked. The power supply is not an in-expensive item, and I don’t want to replace it, unless I know it is the cause of the problem. Also I would much rather fix than replace. I have a background in electronics, so I have no problem tackling the repair, but I prefer to not do it blindly. A schematic, with test voltages, and testing points, as well as a history of common failures would be of great assistance. Since I retired, I watch how I spend a lot more carefully. I don’t want to just parts swap for the purpose of troubleshooting. I want to make sure that what I buy will solve the problem. Brad
From: "Brad Harper bharper33@... [disklavier]" <disklavier@yahoogroups.com> Reply-To: <disklavier@yahoogroups.com> Date: Tuesday, December 30, 2014 at 11:54 AM To: <disklavier@yahoogroups.com> Subject: Re: [disklavier] Service Manual and Schematics for MarkII DKC100R Thanks Carol, Could this have been caused by moving the piano to a new location? I did not have this problem until the piano was moved. It was in storage for about 6 months. This link does not contain a Service manual though, is there still one more manual? Thanks again… Brad From: "Carol Beigel carol@carolrpt.com [disklavier]" <disklavier@yahoogroups.com> Reply-To: <disklavier@yahoogroups.com> Date: Tuesday, December 30, 2014 at 10:46 AM To: <disklavier@yahoogroups.com> Subject: Re: [disklavier] Service Manual and Schematics for MarkII DKC100R This could be a damper pedal solenoid out of adjustment. When it heats up it shuts down the entire system. If it was a power supply it probably would not start to play at all. An experienced Disklavier tech is best equipped to make this adjustment. Otherwise you will find it in the service manual or the maintenance manual instructions how to do this. Carol Beigel On Dec 30, 2014, at 8:15 AM, 'MixMeisterBob' mixmeisterbob@... [disklavier] <disklavier@yahoogroups.com> wrote: http://yamahaden.com/resources-2/item/281-mark-ii-manual From: disklavier@yahoogroups.com [mailto:disklavier@yahoogroups.com] Sent: Tuesday, December 30, 2014 2:36 AM To: disklavier@yahoogroups.com Subject: [disklavier] Service Manual and Schematics for MarkII DKC100R Hi All, I am looking for a Service Manual and Schematics for MarkII DKC100R I am Having a “PWM over” error, shortly after starting playback, so I am looking for a Service Manual with Schematics for the Solenoid Power supply, and any good advice on tests, and what to look for. That’s a good starter discussion. Thanks for your Help… Brad Brad Harper Bharper33@...
2014-12-30 by Brad Harper
Yes this is a GH1…
From: "Carol Beigel carol@... [disklavier]" <disklavier@yahoogroups.com> Reply-To: <disklavier@yahoogroups.com> Date: Tuesday, December 30, 2014 at 1:31 PM To: "disklavier@yahoogroups.com" <disklavier@yahoogroups.com> Subject: Re: [disklavier] Service Manual and Schematics for MarkII DKC100R Is this a grand piano? Carol Sent from my iPhone On Dec 30, 2014, at 11:54 AM, Brad Harper bharper33@... [disklavier] <disklavier@yahoogroups.com> wrote: Thanks Carol, Could this have been caused by moving the piano to a new location? I did not have this problem until the piano was moved. It was in storage for about 6 months. This link does not contain a Service manual though, is there still one more manual? Thanks again… Brad From: "Carol Beigel carol@... [disklavier]" <disklavier@yahoogroups.com> Reply-To: <disklavier@yahoogroups.com> Date: Tuesday, December 30, 2014 at 10:46 AM To: <disklavier@yahoogroups.com> Subject: Re: [disklavier] Service Manual and Schematics for MarkII DKC100R This could be a damper pedal solenoid out of adjustment. When it heats up it shuts down the entire system. If it was a power supply it probably would not start to play at all. An experienced Disklavier tech is best equipped to make this adjustment. Otherwise you will find it in the service manual or the maintenance manual instructions how to do this. Carol Beigel On Dec 30, 2014, at 8:15 AM, 'MixMeisterBob' mixmeisterbob@... [disklavier] <disklavier@yahoogroups.com> wrote: http://yamahaden.com/resources-2/item/281-mark-ii-manual From: disklavier@yahoogroups.com [mailto:disklavier@yahoogroups.com] Sent: Tuesday, December 30, 2014 2:36 AM To: disklavier@yahoogroups.com Subject: [disklavier] Service Manual and Schematics for MarkII DKC100R Hi All, I am looking for a Service Manual and Schematics for MarkII DKC100R I am Having a “PWM over” error, shortly after starting playback, so I am looking for a Service Manual with Schematics for the Solenoid Power supply, and any good advice on tests, and what to look for. That’s a good starter discussion. Thanks for your Help… Brad Brad Harper Bharper33@...
2014-12-30 by Spencer Chase
Carol,
A little more background. This problem has gotten worse over the last 10 Months. When the problem first started, the piano would play for about 40 Minutes, before the problem occurred. I could actually play an entire Pianosoft diskette before it started happening. Around this time, I also upgraded the firmware in the DKC100R controller, because it would not read IBM formatted diskettes. The firmware fixed that problem, after a couple tries(bad firmware on the shelf). I started using the system more because I could buy titles that I could download from Yamaha and play. My system has the MU50 sound module as well. The problem slowly got worse, with shorter and shorter play times, before the error occurred. Now the system will fault at the first song on a disk.
I took the cover off the foot pedal solenoid mechanism, and disconnected the solenoids, but same issue. Watching the solenoids, it seems like the power to them is weak, as the sustain solenoid, only actuated about half of it’s travel. I disconnected the linkages, and it would travel the whole distance. Still no help, about 30 seconds of song play.
I truly think the power supply is not working up to capacity, and then causing the shutdown. That is why I am looking for a schematic, and service manual, so I can test it, and see if it needs to be reworked.
The power supply is not an in-expensive item, and I don’t want to replace it, unless I know it is the cause of the problem. Also I would much rather fix than replace. I have a background in electronics, so I have no problem tackling the repair, but I prefer to not do it blindly. A schematic, with test voltages, and testing points, as well as a history of common failures would be of great assistance. Since I retired, I watch how I spend a lot more carefully. I don’t want to just parts swap for the purpose of troubleshooting. I want to make sure that what I buy will solve the problem.
Brad
From: "Brad Harper bharper33@yahoo.com [disklavier]" <disklavier@yahoogroups.com>
Reply-To: <disklavier@yahoogroups.com>
Date: Tuesday, December 30, 2014 at 11:54 AM
To: <disklavier@yahoogroups.com>
Subject: Re: [disklavier] Service Manual and Schematics for MarkII DKC100R
Thanks Carol,
Could this have been caused by moving the piano to a new location? I did not have this problem until the piano was moved. It was in storage for about 6 months.
This link does not contain a Service manual though, is there still one more manual?
Thanks again… BradFrom: "Carol Beigel carol@carolrpt.com [disklavier]" <disklavier@yahoogroups.com>
Reply-To: <disklavier@yahoogroups.com>
Date: Tuesday, December 30, 2014 at 10:46 AM
To: <disklavier@yahoogroups.com>
Subject: Re: [disklavier] Service Manual and Schematics for MarkII DKC100R
This could be a damper pedal solenoid out of adjustment. When it heats up it shuts down the entire system. If it was a power supply it probably would not start to play at all. An experienced Disklavier tech is best equipped to make this adjustment. Otherwise you will find it in the service manual or the maintenance manual instructions how to do this.
Carol Beigel
On Dec 30, 2014, at 8:15 AM, 'MixMeisterBob' mixmeisterbob@... [disklavier] <disklavier@yahoogroups.com> wrote:
From: disklavier@yahoogroups.com [mailto:disklavier@yahoogroups.com]
Sent: Tuesday, December 30, 2014 2:36 AM
To: disklavier@yahoogroups.com
Subject: [disklavier] Service Manual and Schematics for MarkII DKC100RHi All,I am looking for a Service Manual and Schematics for MarkII DKC100RI am Having a “PWM over” error, shortly after starting playback, so I am looking for a Service Manual with Schematics for the Solenoid Power supply, and any good advice on tests, and what to look for.That’s a good starter discussion.Thanks for your Help… BradBrad Harper
-- Best regards, Spencer Chase 67550-Bell Springs Rd. Garberville, CA 95542 Postal service only. Laytonville, CA 95454 UPS only. Spencer@... http://www.spencerserolls.com (425) 791-0309
2014-12-30 by Brad Harper
Spencer, Thanks for the encouragement, as well as your contributions to recovering many past performance titles. Our community of piano performance enthusiasts is a small one, but with many people that freely share experience, and many hours of work in preserving performance art. The task of recovering old paper piano rolls, and converting them to midi, allows other artists to build on the piece, and add full orchestration. Also, then being able to print the musical score, as it was initially performed is a step toward preserving the past. As these methods get better and better, it is amazing to have Gershwin perform on your piano, in your own living room, with a nuance that only he could provide. Brad…
From: "Spencer Chase lists@... [disklavier]"
<disklavier@...m>
Reply-To: <disklavier@yahoogroups.com>
Date: Tuesday, December 30, 2014 at 1:46 PM
To: <disklavier@yahoogroups.com>
Subject: Re: [disklavier] Service Manual and Schematics for MarkII DKC100R
Brad,
good luck. i often find myself in similar positions. i am very good with
electronics, about 40 years experience and have even kept up with modern
methods. i can fix pretty much anything and can read all but the worst
schematics. the problem is that companies like Yamaha tend to keep this
information to themselves. there are plenty of companies who see the
benefit to both customers and to their company, to freely share this
information. my guess is that Yamaha will never be one of these companies
but i would certainly like to be proven wrong.
On 12/30/2014 10:33 AM, Brad Harper bharper33@... [disklavier] wrote:
Carol,
A little more background. This problem has gotten worse over the last 10
Months. When the problem first started, the piano would play for about 40
Minutes, before the problem occurred. I could actually play an entire
Pianosoft diskette before it started happening. Around this time, I also
upgraded the firmware in the DKC100R controller, because it would not read
IBM formatted diskettes. The firmware fixed that problem, after a couple
tries(bad firmware on the shelf). I started using the system more because
I could buy titles that I could download from Yamaha and play. My system
has the MU50 sound module as well. The problem slowly got worse, with
shorter and shorter play times, before the error occurred. Now the system
will fault at the first song on a disk.
I took the cover off the foot pedal solenoid mechanism, and disconnected
the solenoids, but same issue. Watching the solenoids, it seems like the
power to them is weak, as the sustain solenoid, only actuated about half
of it’s travel. I disconnected the linkages, and it would travel the
whole distance. Still no help, about 30 seconds of song play.
I truly think the power supply is not working up to capacity, and then
causing the shutdown. That is why I am looking for a schematic, and
service manual, so I can test it, and see if it needs to be reworked.
The power supply is not an in-expensive item, and I don’t want to replace
it, unless I know it is the cause of the problem. Also I would much
rather fix than replace. I have a background in electronics, so I have no
problem tackling the repair, but I prefer to not do it blindly. A
schematic, with test voltages, and testing points, as well as a history of
common failures would be of great assistance. Since I retired, I watch
how I spend a lot more carefully. I don’t want to just parts swap for the
purpose of troubleshooting. I want to make sure that what I buy will
solve the problem.
Brad
From: "Brad Harper bharper33@... [disklavier]"
<disklavier@yahoogroups.com>
Reply-To: <disklavier@yahoogroups.com>
Date: Tuesday, December 30, 2014 at 11:54 AM
To: <disklavier@yahoogroups.com>
Subject: Re: [disklavier] Service Manual and Schematics for MarkII
DKC100R
Thanks Carol,
Could this have been caused by moving the piano to a new location? I did
not have this problem until the piano was moved. It was in storage for
about 6 months.
This link does not contain a Service manual though, is there still one
more manual?
Thanks again… Brad
From: "Carol Beigel carol@... [disklavier]"
<disklavier@yahoogroups.com>
Reply-To: <disklavier@yahoogroups.com>
Date: Tuesday, December 30, 2014 at 10:46 AM
To: <disklavier@yahoogroups.com>
Subject: Re: [disklavier] Service Manual and Schematics for MarkII
DKC100R
This could be a damper pedal solenoid out of adjustment. When it heats
up it shuts down the entire system. If it was a power supply it probably
would not start to play at all. An experienced Disklavier tech is best
equipped to make this adjustment. Otherwise you will find it in the
service manual or the maintenance manual instructions how to do this.
Carol Beigel
On Dec 30, 2014, at 8:15 AM, 'MixMeisterBob' mixmeisterbob@...
[disklavier] <disklavier@yahoogroups.com> wrote:
http://yamahaden.com/resources-2/item/281-mark-ii-manual
From: disklavier@yahoogroups.com [mailto:disklavier@yahoogroups.com]
Sent: Tuesday, December 30, 2014 2:36 AM
To: disklavier@yahoogroups.com
Subject: [disklavier] Service Manual and Schematics for MarkII DKC100R
Hi All,
I am looking for a Service Manual and Schematics for MarkII DKC100R
I am Having a “PWM over” error, shortly after starting playback, so I am
looking for a Service Manual with Schematics for the Solenoid Power
supply, and any good advice on tests, and what to look for.
That’s a good starter discussion.
Thanks for your Help… Brad
Brad Harper
Bharper33@yahoo.com
--
Best regards, Spencer Chase
67550-Bell Springs Rd.
Garberville, CA 95542 Postal service only.
Laytonville, CA 95454 UPS only.
Spencer@...://www.spencerserolls.com
(425) 791-03092014-12-30 by Carol Beigel
The reason I asked if it was a grand piano is that the only time I have seen this error message when a Disklavier grand was recently moved. There is a round connector with several pins that connects the pedal lyre with the rest of the piano. It has a round collet which is to screw to untighten or tighten that cable. Unfortunately, an experienced mover would try to turn the whole thing and mess up the pins inside. Once the collet is loosened, the conector should be pulled down and not twisted to disconnect the pedal lyre from the piano. Fortunately when I did this repair years ago, the cable was an available part. The entire pedal assembly needs to be taken apart to replace the cable. Hopefully Bill Brandon will chime in here to confirm (or not!) this problem. You might crawl under the piano yourself and disconnect this cable the proper way and check the pins. Once I had this problem because the cable LOOKED like it was properly attached but it was not! Like most things electronic, disconnect, reconnect and try again! Carol
> On Dec 30, 2014, at 2:42 PM, Brad Harper bharper33@... [disklavier] <disklavier@yahoogroups.com> wrote: > > > > Spencer, > > Thanks for the encouragement, as well as your contributions to recovering many past performance titles. Our community of piano performance enthusiasts is a small one, but with many people that freely share experience, and many hours of work in preserving performance art. The task of recovering old paper piano rolls, and converting them to midi, allows other artists to build on the piece, and add full orchestration. Also, then being able to print the musical score, as it was initially performed is a step toward preserving the past. As these methods get better and better, it is amazing to have Gershwin perform on your piano, in your own living room, with a nuance that only he could provide. > > Brad… > > From: "Spencer Chase lists@spencerserolls.com <mailto:lists@...> [disklavier]" <disklavier@yahoogroups.com <mailto:disklavier@yahoogroups.com>> > Reply-To: <disklavier@yahoogroups.com <mailto:disklavier@yahoogroups.com>> > Date: Tuesday, December 30, 2014 at 1:46 PM > To: <disklavier@yahoogroups.com <mailto:disklavier@yahoogroups.com>> > Subject: Re: [disklavier] Service Manual and Schematics for MarkII DKC100R > > Brad, > > good luck. i often find myself in similar positions. i am very good with electronics, about 40 years experience and have even kept up with modern methods. i can fix pretty much anything and can read all but the worst schematics. the problem is that companies like Yamaha tend to keep this information to themselves. there are plenty of companies who see the benefit to both customers and to their company, to freely share this information. my guess is that Yamaha will never be one of these companies but i would certainly like to be proven wrong. > > > On 12/30/2014 10:33 AM, Brad Harper bharper33@... <mailto:bharper33@...m> [disklavier] wrote: >> >> Carol, >> >> A little more background. This problem has gotten worse over the last 10 Months. When the problem first started, the piano would play for about 40 Minutes, before the problem occurred. I could actually play an entire Pianosoft diskette before it started happening. Around this time, I also upgraded the firmware in the DKC100R controller, because it would not read IBM formatted diskettes. The firmware fixed that problem, after a couple tries(bad firmware on the shelf). I started using the system more because I could buy titles that I could download from Yamaha and play. My system has the MU50 sound module as well. The problem slowly got worse, with shorter and shorter play times, before the error occurred. Now the system will fault at the first song on a disk. >> >> I took the cover off the foot pedal solenoid mechanism, and disconnected the solenoids, but same issue. Watching the solenoids, it seems like the power to them is weak, as the sustain solenoid, only actuated about half of it’s travel. I disconnected the linkages, and it would travel the whole distance. Still no help, about 30 seconds of song play. >> >> I truly think the power supply is not working up to capacity, and then causing the shutdown. That is why I am looking for a schematic, and service manual, so I can test it, and see if it needs to be reworked. >> >> The power supply is not an in-expensive item, and I don’t want to replace it, unless I know it is the cause of the problem. Also I would much rather fix than replace. I have a background in electronics, so I have no problem tackling the repair, but I prefer to not do it blindly. A schematic, with test voltages, and testing points, as well as a history of common failures would be of great assistance. Since I retired, I watch how I spend a lot more carefully. I don’t want to just parts swap for the purpose of troubleshooting. I want to make sure that what I buy will solve the problem. >> >> Brad >> >> From: "Brad Harper bharper33@... <mailto:bharper33@...> [disklavier]" <disklavier@yahoogroups.com <mailto:disklavier@yahoogroups.com>> >> Reply-To: <disklavier@yahoogroups.com <mailto:disklavier@yahoogroups.com>> >> Date: Tuesday, December 30, 2014 at 11:54 AM >> To: <disklavier@yahoogroups.com <mailto:disklavier@yahoogroups.com>> >> Subject: Re: [disklavier] Service Manual and Schematics for MarkII DKC100R >> >> >> Thanks Carol, >> >> Could this have been caused by moving the piano to a new location? I did not have this problem until the piano was moved. It was in storage for about 6 months. >> >> This link does not contain a Service manual though, is there still one more manual? >> >> Thanks again… Brad >> From: "Carol Beigel carol@... <mailto:carol@carolrpt.com> [disklavier]" <disklavier@yahoogroups.com <mailto:disklavier@yahoogroups.com>> >> Reply-To: <disklavier@yahoogroups.com <mailto:disklavier@yahoogroups.com>> >> Date: Tuesday, December 30, 2014 at 10:46 AM >> To: <disklavier@yahoogroups.com <mailto:disklavier@yahoogroups.com>> >> Subject: Re: [disklavier] Service Manual and Schematics for MarkII DKC100R >> >> >> This could be a damper pedal solenoid out of adjustment. When it heats up it shuts down the entire system. If it was a power supply it probably would not start to play at all. An experienced Disklavier tech is best equipped to make this adjustment. Otherwise you will find it in the service manual or the maintenance manual instructions how to do this. >> >> >> Carol Beigel >> >>> On Dec 30, 2014, at 8:15 AM, 'MixMeisterBob' mixmeisterbob@... <mailto:mixmeisterbob@...> [disklavier] <disklavier@yahoogroups.com <mailto:disklavier@yahoogroups.com>> wrote: >>> >>> >>> >>> http://yamahaden.com/resources-2/item/281-mark-ii-manual <http://yamahaden.com/resources-2/item/281-mark-ii-manual> >>> >>> From: disklavier@yahoogroups.com <mailto:disklavier@yahoogroups.com> [mailto:disklavier@yahoogroups.com <mailto:disklavier@yahoogroups.com>] >>> Sent: Tuesday, December 30, 2014 2:36 AM >>> To: disklavier@yahoogroups.com <mailto:disklavier@yahoogroups.com> >>> Subject: [disklavier] Service Manual and Schematics for MarkII DKC100R >>> >>> >>> Hi All, >>> >>> I am looking for a Service Manual and Schematics for MarkII DKC100R >>> >>> I am Having a “PWM over” error, shortly after starting playback, so I am looking for a Service Manual with Schematics for the Solenoid Power supply, and any good advice on tests, and what to look for. >>> >>> That’s a good starter discussion. >>> >>> Thanks for your Help… Brad >>> Brad Harper >>> Bharper33@... <mailto:Bharper33@...> >>> >>> >> > > -- > > Best regards, Spencer Chase > 67550-Bell Springs Rd. > Garberville, CA 95542 Postal service only. > Laytonville, CA 95454 UPS only. > Spencer@... <mailto:Spencer@...>http://www.spencerserolls.com <http://www.spencerserolls.com/> > (425) 791-0309 > > > >
2014-12-30 by Brad Harper
Hi Carol, I did disconnect that harness, and reconnected it, and it was loose when I first checked it. I also did a check that spencer suggested, which is to record a run of the keys, and then playback only that to see if it stops at a certain key. The problem is now it has progressed to not playing anything. Brad…
From: "Carol Beigel carol@... [disklavier]" <disklavier@yahoogroups.com> Reply-To: <disklavier@yahoogroups.com> Date: Tuesday, December 30, 2014 at 4:47 PM To: <disklavier@yahoogroups.com> Subject: Re: [disklavier] Service Manual and Schematics for MarkII DKC100R
2015-01-16 by Brad Harper
Update on the Piano Power Off #15 "PWR OVER” Error on a Mark II GH1B Grand DKC100R with MU50 after about 30 Seconds of Play. I ran the Error History, here are the results: Sensor LED ON error #8 Count = 094 Sensor Not Connected #9 Count = 085 Piano Power Off (PWM OVER) #15 Count = 039 I removed the power supply and dis-assembled it, and ran tests on all the Output Voltages and inspected all components for signs of Overheating, Leakage, cold solder joints and Failure. The Power supply tested out as normal, in fact looked rather New. I replaced the incoming power cable, and power strip with a premium grade replacement. I read all the service manuals, and studied all of the schematics, block diagrams, Error Descriptions, and Troubleshooting manuals. The DGP1/DGA1 service manual on page 60 gives this description of the Error Under the PK-CTL Board – Protect Function: No Message Condition Contents and Countermeasures 15 Piano Power Off The keyboard & sustain, soft / shift pedal 100V (120V for Grand) of power to Keyboard and pedal drive OFF. (PWM OVER) playback stop. Playback function cannot One or more key drive transistors have become too hot and the be restored until the drive transistor(s) protect circuit has activated. ® Check the drive board has/have cooled down sufficiently and the power has been turned off,then turned back on. The DGA1XG Service manual lists the PK-CTL Board Part Number as VU691100 for the DGH1BXG model The Block Diagram shows a Thermo Protect F1 on the Gate Array with inputs from Thermostats on the Drive A, B and Pedal Units. They all look like there are in series to Ground, so the opening of any thermostat will signal the thermal protect to shutdown the piano. Tomorrow, I am going to adjust the Pedal Solenoids, the Half pedal settings, the pedal linkage gaps, and put a meter on the Thermostat line to see if it opens during play. It kinda makes sense that there maybe something wrong at the pedal unit, because it was removed during the move. The pedal Solenoids are huge, so I can understand If they are creating a lot of heat on a drive transistor at 120VDC, enough to trigger a thermostat overheat. Schematics have been very helpful as well as component adjustment info and error information. Will let you know of the progress…
From: "Brad Harper bharper33@yahoo.com [disklavier]" <disklavier@yahoogroups.com> Reply-To: <disklavier@yahoogroups.com> Date: Tuesday, December 30, 2014 at 5:13 PM To: <disklavier@yahoogroups.com> Subject: Re: [disklavier] Service Manual and Schematics for MarkII DKC100R Hi Carol, I did disconnect that harness, and reconnected it, and it was loose when I first checked it. I also did a check that spencer suggested, which is to record a run of the keys, and then playback only that to see if it stops at a certain key. The problem is now it has progressed to not playing anything. Brad… From: "Carol Beigel carol@... [disklavier]" <disklavier@yahoogroups.com> Reply-To: <disklavier@yahoogroups.com> Date: Tuesday, December 30, 2014 at 4:47 PM To: <disklavier@yahoogroups.com> Subject: Re: [disklavier] Service Manual and Schematics for MarkII DKC100R
2015-01-16 by George Frederick Litterst
Good morning, everyone. Brad, your detailed information is fascinating. Good luck with this! I have no information to offer you except the following: I have a DC6 IIXG PRO. At one point, a mechanical issue developed with the sustain pedal solenoid and trapwork. At this point, I cannot recall how the problem developed nor over what period of time. The bottom line was this: the sustain pedal no longer moved freely. As a pianist, I had not noticed a gradual increase in the resistance of the pedal, which leads me to suspect that my problem developed slowly over time. Upon comparison with other pianos, it was obvious that it took too much effort to move my pedal, and therefore the solenoid had to work too hard and errors resulted. Ultimately it was necessary to make a variety of adjustments to the trap work to get things working smoothly—and I have had no problems since. My Disklavier technician took care of the matter for me. Regards, PianoBench
> On Jan 16, 2015, at 11:29 AM, Brad Harper bharper33@... [disklavier] <disklavier@yahoogroups.com> wrote: > > > Update on the Piano Power Off #15 "PWR OVER” Error on a Mark II GH1B Grand DKC100R with MU50 after about 30 Seconds of Play. > > I ran the Error History, here are the results: > Sensor LED ON error #8 Count = 094 > Sensor Not Connected #9 Count = 085 > Piano Power Off (PWM OVER) #15 Count = 039 > > I removed the power supply and dis-assembled it, and ran tests on all the Output Voltages and inspected all components for signs of Overheating, Leakage, cold solder joints and Failure. The Power supply tested out as normal, in fact looked rather New. > > I replaced the incoming power cable, and power strip with a premium grade replacement. > > I read all the service manuals, and studied all of the schematics, block diagrams, Error Descriptions, and Troubleshooting manuals. > > The DGP1/DGA1 service manual on page 60 gives this description of the Error Under the PK-CTL Board – Protect Function: > > No Message Condition Contents and Countermeasures > > 15 Piano Power Off The keyboard & sustain, soft / shift pedal 100V (120V for Grand) of power to Keyboard and pedal drive OFF. > (PWM OVER) playback stop. Playback function cannot One or more key drive transistors have become too hot and the > be restored until the drive transistor(s) protect circuit has activated. ® Check the drive board > has/have cooled down sufficiently and > the power has been turned off,then > turned back on. > > The DGA1XG Service manual lists the PK-CTL Board Part Number as VU691100 for the DGH1BXG model > The Block Diagram shows a Thermo Protect F1 on the Gate Array with inputs from Thermostats on the Drive A, B and Pedal Units. They all look like there are in series to Ground, > so the opening of any thermostat will signal the thermal protect to shutdown the piano. > > Tomorrow, I am going to adjust the Pedal Solenoids, the Half pedal settings, the pedal linkage gaps, and put a meter on the Thermostat line to see if it opens during play. > > It kinda makes sense that there maybe something wrong at the pedal unit, because it was removed during the move. The pedal Solenoids are huge, so I can understand > If they are creating a lot of heat on a drive transistor at 120VDC, enough to trigger a thermostat overheat. > > Schematics have been very helpful as well as component adjustment info and error information. > > Will let you know of the progress… > > > > > > From: "Brad Harper bharper33@... <mailto:bharper33@...> [disklavier]" <disklavier@yahoogroups.com <mailto:disklavier@yahoogroups.com>> > Reply-To: <disklavier@yahoogroups.com <mailto:disklavier@yahoogroups.com>> > Date: Tuesday, December 30, 2014 at 5:13 PM > To: <disklavier@yahoogroups.com <mailto:disklavier@yahoogroups.com>> > Subject: Re: [disklavier] Service Manual and Schematics for MarkII DKC100R > > > > Hi Carol, > > I did disconnect that harness, and reconnected it, and it was loose when I first checked it. I also did a check that spencer suggested, which is to record a run of the keys, and then playback only that to see if it stops at a certain key. The problem is now it has progressed to not playing anything. > > Brad… > > From: "Carol Beigel carol@... <mailto:carol@...> [disklavier]" <disklavier@yahoogroups.com <mailto:disklavier@yahoogroups.com>> > Reply-To: <disklavier@yahoogroups.com <mailto:disklavier@yahoogroups.com>> > Date: Tuesday, December 30, 2014 at 4:47 PM > To: <disklavier@yahoogroups.com <mailto:disklavier@yahoogroups.com>> > Subject: Re: [disklavier] Service Manual and Schematics for MarkII DKC100R > > > >