Hello,

This email message is a notification to let you know that
a file has been uploaded to the Files area of the k5synth
group.

   File        : /Patch Library/K5 Narf's Multis & Singles .zip
   Uploaded by : narfman96 <narfman96@...>
   Description : K5 Sysex Multis and Singles from the best of my MQ9 library.

You can access this file at the URL:
http://groups.yahoo.com/group/k5synth/files/Patch%20Library/K5%20Narf%27s%20Mult\
is%20%26%20Singles%20.zip

To learn more about file sharing for your group, please visit:
http://help.yahoo.com/l/us/yahoo/groups/original/members/web/index.htmlfiles

Regards,

narfman96 <narfman96@...>

Had to wait forever for it to come through eBay, but after a couple
minutes tinkering with it this morning, I can't wait to get home and
push out some MOAR UGLEE INDUSTREAL DISNORTIONZ!!!

Hi Glenn,
you might want to look here for Atari editors:

http://groups.yahoo.com/group/atari-midi-archives/files/SOUNDS/Kawai/

The K5 Pro editor is particularly good on graphics and editing, which
might be of interest to you, or anyone else with an Atari handy.
Me, I don't use anything else for MIDI work these days.
If it ain't broke.....

Best wishes,

David.



--- In k5synth@yahoogroups.com, "Glen Darcey" <gdarcey@...> wrote:
>
> I wonder how an emulator in an emulator would work.
> I was thinking about the old ST. I actually had two with hard drives
at one time. I think I
> had the Doctor T. editor for the K5 too back then. I ran all Dr. T.
software in those days.
> I think I'll stick with the SoundQuest editor and see about getting
them to update it a bit.
>
> thanks though.
>
>

Thanks.  Kfuenf's site was a nice little walkthrough.  Looks like
programming the harmonic envelopes is going to be the most tedious but
as that's also the most interesting parts, I don't think I'd be
spending any more time than I intended to anyway.  I went ahead and
pulled the trigger on one on eBay so if it sucks...  I'm coming after
you!!!

Love,
Jim

--- In k5synth@yahoogroups.com, "Antoine Deschênes" <antdes45@...> wrote:
>
> Hi Jim,
>
> there are no nested parameters, they're well sorted, the large (for
> it's time) graphic LCD makes the interface quite easy to use. The
> problem is with the parameters themselves -- there are so many you'll
> not know where to go.
>
> A computer with an editor makes things much easier, even though they
> often simply copy the LCD screens. Browsing between the parameters
> with a keyboard and mouse is easier than with a knob and directional
> arrows.
>
> Have a look at http://kfuenf.org/ , especially the K5 How-To program
> guide. You'll see if it's too much for you or not.
> http://kfuenf.org/en/k5info.html
>
> Cheers,
> Antoine
>
> 2008/8/6 Jim Wicked <face_sucker@...>:
> > Hi guys.  I've got a room full of synths and have one slot left for a
> > keyboard synth before I call it quits on synth purchases (aside from
> > feeding my modular.)  The K5 looks and sounds like it would be a lot
> > of fun, but here's the catch:  I took the computer out of my studio
> > because it hindered more than helped my workflow and went all
> > hardware.  So my question to those of you who have had a K5 is how
> > intuitive is patch editing on this thing?  Is it easy like an ESQ-1,
> > or is it obnoxiously nonprogrammable in the way that a TX81Z is?
> > Thanks a ton!
>

Hi Jim,

there are no nested parameters, they're well sorted, the large (for
it's time) graphic LCD makes the interface quite easy to use. The
problem is with the parameters themselves -- there are so many you'll
not know where to go.

A computer with an editor makes things much easier, even though they
often simply copy the LCD screens. Browsing between the parameters
with a keyboard and mouse is easier than with a knob and directional
arrows.

Have a look at http://kfuenf.org/ , especially the K5 How-To program
guide. You'll see if it's too much for you or not.
http://kfuenf.org/en/k5info.html

Cheers,
Antoine

2008/8/6 Jim Wicked <face_sucker@...>:
> Hi guys.  I've got a room full of synths and have one slot left for a
> keyboard synth before I call it quits on synth purchases (aside from
> feeding my modular.)  The K5 looks and sounds like it would be a lot
> of fun, but here's the catch:  I took the computer out of my studio
> because it hindered more than helped my workflow and went all
> hardware.  So my question to those of you who have had a K5 is how
> intuitive is patch editing on this thing?  Is it easy like an ESQ-1,
> or is it obnoxiously nonprogrammable in the way that a TX81Z is?
> Thanks a ton!

Hi guys.  I've got a room full of synths and have one slot left for a
keyboard synth before I call it quits on synth purchases (aside from
feeding my modular.)  The K5 looks and sounds like it would be a lot
of fun, but here's the catch:  I took the computer out of my studio
because it hindered more than helped my workflow and went all
hardware.  So my question to those of you who have had a K5 is how
intuitive is patch editing on this thing?  Is it easy like an ESQ-1,
or is it obnoxiously nonprogrammable in the way that a TX81Z is?
Thanks a ton!

I wonder how an emulator in an emulator would work.
I was thinking about the old ST. I actually had two with hard drives at one
time. I think I
had the Doctor T. editor for the K5 too back then. I ran all Dr. T. software in
those days.
I think I'll stick with the SoundQuest editor and see about getting them to
update it a bit.

thanks though.


--- In k5synth@yahoogroups.com, "Antoine Deschênes" <antdes45@...> wrote:
>
> The only other options known :
> - Use Boot Camp to install Windows and run the Atari emulator "STeem"
> on it. There are a couple of editors available.
> - Use Windows on Parallels to do the same thing.
> - Find an old PC with an MPU-401-compatible MIDI interface (Joystick
> ports on many ISA soundcards and onboard audio work) and use Syntonyx
> Overtone.
> - Find an old Atari ST.
>
>
> 2008/8/5 Glen Darcey <gdarcey@...>:
> > Anyone have a favorite editor for the K5?
> > I have the beta (and last) version of Soundiver but it only does librarian.
> > I have Sound Quest which has an editor but it's not great. I'm going to try
to modify it
a bit.
> >
> > other options?
> >
>

The only other options known :
- Use Boot Camp to install Windows and run the Atari emulator "STeem"
on it. There are a couple of editors available.
- Use Windows on Parallels to do the same thing.
- Find an old PC with an MPU-401-compatible MIDI interface (Joystick
ports on many ISA soundcards and onboard audio work) and use Syntonyx
Overtone.
- Find an old Atari ST.


2008/8/5 Glen Darcey <gdarcey@...>:
> Anyone have a favorite editor for the K5?
> I have the beta (and last) version of Soundiver but it only does librarian.
> I have Sound Quest which has an editor but it's not great. I'm going to try to
modify it a bit.
>
> other options?
>

Anyone have a favorite editor for the K5?
I have the beta (and last) version of Soundiver but it only does librarian.
I have Sound Quest which has an editor but it's not great. I'm going to try to
modify it a bit.

other options?

Hi Fran,

Good to see you got your synth working!

Pin 1 is the most significant bit, that explains the distortion ;-)

2008/8/2 narfman96 <narfman96@...>:
> The beast is fixed!!! I replaced the U14 DAC and the distortion on S2
> is gone. Whoohoo!!!
>
> I buzzed out the bad PCM55HP and found the Pin-1 <DACF> data line is
> open internally. This must have caused the 16th bit to be ignored. Not
> sure why that caused the distortion??? But hey at least it wasn't the
> Kawai digital chips causing the problem. Oh yeah and I was wrong about
> the problem being analog.
>
> Now to enjoy this great Kawai additive synth.
>
> Fran
>

The beast is fixed!!! I replaced the U14 DAC and the distortion on S2
is gone. Whoohoo!!!

I buzzed out the bad PCM55HP and found the Pin-1 <DACF> data line is
open internally. This must have caused the 16th bit to be ignored. Not
sure why that caused the distortion??? But hey at least it wasn't the
Kawai digital chips causing the problem. Oh yeah and I was wrong about
the problem being analog.

Now to enjoy this great Kawai additive synth.

Fran

Yep, it will bring back everything to default and you'll end up with
only "K5SYNTH" patches.

The Kfuenf librarian works under Windows. You could try to find a
computer with Windows on it, connect your MIDI interface, and try to
save your patches.



2008/7/24 Mark Lewis <misterhemi@...>:
> No, it doesn't want to send any sounds.... and that is unfortunate
> because I wanted to save the sounds that came with it.
>
> I am assuming that if I reset it (remove and replace the battery) that
> the sounds will be lost, is that correct???
>

No, it doesn't want to send any sounds.... and that is unfortunate
because I wanted to save the sounds that came with it.

I am assuming that if I reset it (remove and replace the battery) that
the sounds will be lost, is that correct???

Antione you're a wizard on this synth!!! Thank you!!! Hope everything
is cool at home...

I found datasheets for every non-Kawai IC in this synth. These docs
have been so helpful. I am waiting for the DAC to get here. I found
one from Sisitronics on Ebay for $22.00 US shipped. This is less than
half what they wanted here stateside. I'm not sure how quick they
will be though... Kawai US had this PCM55HP DAC in stock for $37.50
so I can always pick one up from them. I love dealing with them after
all my misgivings with the big three. Yuck!!

I've talked to my engineering and audio repair friends and they all
agree the problem is from the DAC downstream. The clue is the DAC is
outputting 4 to 5 times what it should. Kawai is using the output op-
amp for this DAC in bipolar mode. This leads one to believe the
feedback (gain control) portion of this op-amp is bad letting it go
to the rails (+/- 6 vdc) and output a wide open distorted signal.

I also have the schematics now and once I figure out how to scan the
larger pages I can help anyone who needs a copy. Kawai TSD let me
join the technicians area. They had most of the service docs for the
K3/K3m and the K4/K4r posted for free on their site. The K4/K4r has
the schematics posted but the pdf is corrupted. I'm trying to get
them to fix it.

Enough for now. Additive synthesis in the multi-dimensional universe.
Who'd have thunk it...

Fran

--- In k5synth@yahoogroups.com, James Bong <jamesbong@...> wrote:
>
> Wow, thanks for all that info!
>
> --- Antoine Deschênes <antdes45@...> wrote:
>
> > Hi,
> >
> > some things that might help you:
> >
> > Datasheet is here, no need to post it:
> > http://focus.ti.com/lit/ds/symlink/pcm55.pdf
> > Product Page:
> >
> http://focus.ti.com/docs/prod/folders/print/pcm55.html
> >
> > Texas Instruments still produces the DAC, on the
> > product page you can
> > see that Arrow and Rochester Electronics have some
> > in stock.
> >
> > As you might have guessed, one DAC outputs S1
> > sounds, and the other outputs S2.
> >
> > Cold solder joints are common in this synth. In the
> > first place, I'll
> > suggest you to rework all the solders on the PSU
> > regulator board. A
> > lot of them fail.
> >
> > The noise comes from the demultiplexing switches,
> > the thousands of
> > opamps placed after the DAC as well as the VCAs.
> >
> > Here's the diagram (what I remember) :
> > DACs ->
> > demux switches (one chip per DAC divides the mono
> > signal in 4
> > different ones) ->
> > Sample & Hold circuit ->
> > S1 CH1-4 & S2 CH1-4 individual mixing (using high
> > value resistors to
> > prevent feedback from other channels in the S&H
> > circuit, adds noise)
> > ->
> > VCAs (specs show they're quite noisy)->
> > Opamp Buffers ->
> > CH1-4 outputs.
> >
> > The MIX and headphones outputs are connected to the
> > last buffer stage
> > outputs, mix the signal and go through one more
> > buffer.
> >
> > I was thinking of experimenting with the output
> > stage by connecting
> > two PGA4311s right at the output of the S&H opamps,
> > and mix S1&S2
> > after the PGAs to see if noise levels would improve.
> > I just lack a bit
> > of time to build the required stuff to program a PIC
> > to control the
> > PGA chips.
> >
> > Your DAC might have a problem, but since there are a
> > lot of external
> > adjustments, it would be a good idea to check the
> > components around
> > the DAC first.
> >
> > Cheers,
> > Antoine

Wow, thanks for all that info!

--- Antoine Deschênes <antdes45@...> wrote:

> Hi,
>
> some things that might help you:
>
> Datasheet is here, no need to post it:
> http://focus.ti.com/lit/ds/symlink/pcm55.pdf
> Product Page:
>
http://focus.ti.com/docs/prod/folders/print/pcm55.html
>
> Texas Instruments still produces the DAC, on the
> product page you can
> see that Arrow and Rochester Electronics have some
> in stock.
>
> As you might have guessed, one DAC outputs S1
> sounds, and the other outputs S2.
>
> Cold solder joints are common in this synth. In the
> first place, I'll
> suggest you to rework all the solders on the PSU
> regulator board. A
> lot of them fail.
>
> The noise comes from the demultiplexing switches,
> the thousands of
> opamps placed after the DAC as well as the VCAs.
>
> Here's the diagram (what I remember) :
> DACs ->
> demux switches (one chip per DAC divides the mono
> signal in 4
> different ones) ->
> Sample & Hold circuit ->
> S1 CH1-4 & S2 CH1-4 individual mixing (using high
> value resistors to
> prevent feedback from other channels in the S&H
> circuit, adds noise)
> ->
> VCAs (specs show they're quite noisy)->
> Opamp Buffers ->
> CH1-4 outputs.
>
> The MIX and headphones outputs are connected to the
> last buffer stage
> outputs, mix the signal and go through one more
> buffer.
>
> I was thinking of experimenting with the output
> stage by connecting
> two PGA4311s right at the output of the S&H opamps,
> and mix S1&S2
> after the PGAs to see if noise levels would improve.
> I just lack a bit
> of time to build the required stuff to program a PIC
> to control the
> PGA chips.
>
> Your DAC might have a problem, but since there are a
> lot of external
> adjustments, it would be a good idea to check the
> components around
> the DAC first.
>
> Cheers,
> Antoine
>
> 2008/7/14 narfman96 <narfman96@...>:
> > The balance only controls the volume for S1 and
> S2. If S1 is all the
> > way down S2 is cranked. Other than the DDA
> envelope (oh yeah the DHG
> > levels too) ahhh, where can S2 be turned down to
> sublight.
> >
> > The aftertouch was easy. There's 2 pots on the
> backside of the MI-004
> > board they say Gain (VR1) and Offset (VR2) on
> them. Open Midi-Ox and
> > watch the pressure change the values for
> aftertouch from 00 to F7.
> > Adjust these pots to get the best performance for
> your preferences.
> > Offset is where it starts to kick in. Then the
> gain adjusts how
> > quickly F7 cranks in. I like a smooth contollable
> range that doesn't
> > rip my tendons out.... That's why I can tell the
> notes from G3 to D4
> > in this K5 aren't as responsive as the rest.
> >
> > Whoohoo!!! I'm talking to Kawai about the Service
> Manual. They are
> > soooo gooood in this day and age of crapping on us
> hardware guys.
> > Oops did I say e-mu? Awww darn! Dirty bird!! I
> want my money back!!!
> >
> > Anyway the manual should be on its way....  Fran
> >
> > --- In k5synth@yahoogroups.com, James Bong
> <jamesbong@...> wrote:
> >>
> >> How does it sound if you turn S1 all the way
> down, and
> >> start turning up S2? Same distortion?
> >>
> >> Oh, and where was the after-touch adjustment? I'm
> >> always afraid I'm going to tip my stand over when
> I'm
> >> using after touch modulation!
> >>
> >> James
> >> --- narfman96 <narfman96@...> wrote:
> >>
> >> > Yes I do have a scope I just haven't gotten
> that far
> >> > yet. Yesterday I
> >> > rebuilt the keyboard. This synth has a nice
> action
> >> > when it's all
> >> > greased up and triggers every note. I found the
> >> > aftertouch
> >> > adjustments and got it more sensitive than the
> key
> >> > bending tipping
> >> > over the stand mode it was originally set for.
> The
> >> > aftertouch strip
> >> > has a few spots that are less sensitive but hey
> it's
> >> > a beast....
> >> >
> >> > If it will help I can post the DAC's datasheet
> here
> >> > in the files
> >> > section so you can see what weird output
> >> > configurations it can have.
> >> > Either current or voltage outputs can be used.
> There
> >> > isn't any pot
> >> > for the offset zero. Also it seems like Kawai
> >> > doesn't use much of the
> >> > gain that's available. Maybe that's why it's so
> >> > noisy.
> >> >
> >> > The patches sound like they should if I turn
> the
> >> > balance so S2 is off
> >> > (-31). Except of course they're thin and
> lifeless
> >> > without the other
> >> > voice mixed in. I saved a bank that way so I
> could
> >> > check out the
> >> > keyboard. I can see where some of the noise
> comes
> >> > from. The high
> >> > frequency response goes way out there. Most of
> these
> >> > 80's and 90's
> >> > synths have low pass filters. This thing sounds
> wide
> >> > open on top end!
> >> > Probably so you can hear the 128 harmonics in
> all
> >> > their glory.
> >> >
> >> > Hopefully I won't be beat when I get home from
> work
> >> > so I can play
> >> > around with this some more. Still haven't heard
> from
> >> > Kawai yet about
> >> > the schematics. Also they always have me sign
> their
> >> > non-disclosure
> >> > form so I'm leery about openly posting them in
> the
> >> > group. Of course
> >> > helpful individuals are a different story.
> Right???
> >> >
> >> > Fran
> >> >
> >> > --- In k5synth@yahoogroups.com, James Bong
> >> > <jamesbong@> wrote:
> >> > >
> >> > > You wouldn't happen to have an oscilloscope
> to
> >> > verify
> >> > > that the output of this chip is actual
> problem, do
> >> > > you?
> >> > >
> >> > > If you do get the schematics, could you
> possibly
> >> > get
> >> > > them scanned to share with the rest of us?
> >> > >
> >> > > James
> >> > >
> >> > > --- narfman96 <narfman96@> wrote:
> >> > >
> >> > > > I resoldered everything involved in this
> part of
> >> > the
> >> > > > circuit. There
> >> > > > is a feedback resistor on the DAC for the
> audio
> >> > > > output. This measures
> >> > > > 6.8k same as the working one. Maybe tonight
> I'll
> >> > try
> >> > > > lowering this
> >> > > > value to see if the gain decreases.
> >> > > >
> >> > > > I'm not having much luck finding a PCM55HP
> DAC.
> >> > > > Digikey lists it for
> >> > > > $38.50 with a long, long lead time... Crap!
> >> > Anyone
> >> > > > know of a source?
> >> > > >
> >> > > > Hopefully Kawai gets back to me today about
> the
> >> > > > schematic.
> >> > > >
> >> > > > Thanks, Fran
> >> > > >
> >> > > > --- In k5synth@yahoogroups.com, James Bong
> >> > > > <jamesbong@> wrote:
> >> > > > >
> >> > > > > Does this chip have a bias circuit to set
> the
> >> > > > min/max
> >> > > > > output voltage scale? It could be
> something as
> >> > > > simple
> >> > > > > as a cold solder joint finally loosing
> contact
> >> > and
> >> > > > > changing the bias. I'd check/re-solder
> the
> >> > solder
> >> > > > > joints to everything connected to the
> chip,
> >> > and
> >> > > > the
> >> > > > > chip it's self.
> >> > > > >
> >> > > > > James
> >> > > >
> >> > > >
> >> > >
> >> >
> >> >
> >> >
> >>
> >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
>
>
>
> --
> Antoine Deschênes
>

Hi,

some things that might help you:

Datasheet is here, no need to post it:
http://focus.ti.com/lit/ds/symlink/pcm55.pdf
Product Page: http://focus.ti.com/docs/prod/folders/print/pcm55.html

Texas Instruments still produces the DAC, on the product page you can
see that Arrow and Rochester Electronics have some in stock.

As you might have guessed, one DAC outputs S1 sounds, and the other outputs S2.

Cold solder joints are common in this synth. In the first place, I'll
suggest you to rework all the solders on the PSU regulator board. A
lot of them fail.

The noise comes from the demultiplexing switches, the thousands of
opamps placed after the DAC as well as the VCAs.

Here's the diagram (what I remember) :
DACs ->
demux switches (one chip per DAC divides the mono signal in 4
different ones) ->
Sample & Hold circuit ->
S1 CH1-4 & S2 CH1-4 individual mixing (using high value resistors to
prevent feedback from other channels in the S&H circuit, adds noise)
->
VCAs (specs show they're quite noisy)->
Opamp Buffers ->
CH1-4 outputs.

The MIX and headphones outputs are connected to the last buffer stage
outputs, mix the signal and go through one more buffer.

I was thinking of experimenting with the output stage by connecting
two PGA4311s right at the output of the S&H opamps, and mix S1&S2
after the PGAs to see if noise levels would improve. I just lack a bit
of time to build the required stuff to program a PIC to control the
PGA chips.

Your DAC might have a problem, but since there are a lot of external
adjustments, it would be a good idea to check the components around
the DAC first.

Cheers,
Antoine

2008/7/14 narfman96 <narfman96@...>:
> The balance only controls the volume for S1 and S2. If S1 is all the
> way down S2 is cranked. Other than the DDA envelope (oh yeah the DHG
> levels too) ahhh, where can S2 be turned down to sublight.
>
> The aftertouch was easy. There's 2 pots on the backside of the MI-004
> board they say Gain (VR1) and Offset (VR2) on them. Open Midi-Ox and
> watch the pressure change the values for aftertouch from 00 to F7.
> Adjust these pots to get the best performance for your preferences.
> Offset is where it starts to kick in. Then the gain adjusts how
> quickly F7 cranks in. I like a smooth contollable range that doesn't
> rip my tendons out.... That's why I can tell the notes from G3 to D4
> in this K5 aren't as responsive as the rest.
>
> Whoohoo!!! I'm talking to Kawai about the Service Manual. They are
> soooo gooood in this day and age of crapping on us hardware guys.
> Oops did I say e-mu? Awww darn! Dirty bird!! I want my money back!!!
>
> Anyway the manual should be on its way....  Fran
>
> --- In k5synth@yahoogroups.com, James Bong <jamesbong@...> wrote:
>>
>> How does it sound if you turn S1 all the way down, and
>> start turning up S2? Same distortion?
>>
>> Oh, and where was the after-touch adjustment? I'm
>> always afraid I'm going to tip my stand over when I'm
>> using after touch modulation!
>>
>> James
>> --- narfman96 <narfman96@...> wrote:
>>
>> > Yes I do have a scope I just haven't gotten that far
>> > yet. Yesterday I
>> > rebuilt the keyboard. This synth has a nice action
>> > when it's all
>> > greased up and triggers every note. I found the
>> > aftertouch
>> > adjustments and got it more sensitive than the key
>> > bending tipping
>> > over the stand mode it was originally set for. The
>> > aftertouch strip
>> > has a few spots that are less sensitive but hey it's
>> > a beast....
>> >
>> > If it will help I can post the DAC's datasheet here
>> > in the files
>> > section so you can see what weird output
>> > configurations it can have.
>> > Either current or voltage outputs can be used. There
>> > isn't any pot
>> > for the offset zero. Also it seems like Kawai
>> > doesn't use much of the
>> > gain that's available. Maybe that's why it's so
>> > noisy.
>> >
>> > The patches sound like they should if I turn the
>> > balance so S2 is off
>> > (-31). Except of course they're thin and lifeless
>> > without the other
>> > voice mixed in. I saved a bank that way so I could
>> > check out the
>> > keyboard. I can see where some of the noise comes
>> > from. The high
>> > frequency response goes way out there. Most of these
>> > 80's and 90's
>> > synths have low pass filters. This thing sounds wide
>> > open on top end!
>> > Probably so you can hear the 128 harmonics in all
>> > their glory.
>> >
>> > Hopefully I won't be beat when I get home from work
>> > so I can play
>> > around with this some more. Still haven't heard from
>> > Kawai yet about
>> > the schematics. Also they always have me sign their
>> > non-disclosure
>> > form so I'm leery about openly posting them in the
>> > group. Of course
>> > helpful individuals are a different story. Right???
>> >
>> > Fran
>> >
>> > --- In k5synth@yahoogroups.com, James Bong
>> > <jamesbong@> wrote:
>> > >
>> > > You wouldn't happen to have an oscilloscope to
>> > verify
>> > > that the output of this chip is actual problem, do
>> > > you?
>> > >
>> > > If you do get the schematics, could you possibly
>> > get
>> > > them scanned to share with the rest of us?
>> > >
>> > > James
>> > >
>> > > --- narfman96 <narfman96@> wrote:
>> > >
>> > > > I resoldered everything involved in this part of
>> > the
>> > > > circuit. There
>> > > > is a feedback resistor on the DAC for the audio
>> > > > output. This measures
>> > > > 6.8k same as the working one. Maybe tonight I'll
>> > try
>> > > > lowering this
>> > > > value to see if the gain decreases.
>> > > >
>> > > > I'm not having much luck finding a PCM55HP DAC.
>> > > > Digikey lists it for
>> > > > $38.50 with a long, long lead time... Crap!
>> > Anyone
>> > > > know of a source?
>> > > >
>> > > > Hopefully Kawai gets back to me today about the
>> > > > schematic.
>> > > >
>> > > > Thanks, Fran
>> > > >
>> > > > --- In k5synth@yahoogroups.com, James Bong
>> > > > <jamesbong@> wrote:
>> > > > >
>> > > > > Does this chip have a bias circuit to set the
>> > > > min/max
>> > > > > output voltage scale? It could be something as
>> > > > simple
>> > > > > as a cold solder joint finally loosing contact
>> > and
>> > > > > changing the bias. I'd check/re-solder the
>> > solder
>> > > > > joints to everything connected to the chip,
>> > and
>> > > > the
>> > > > > chip it's self.
>> > > > >
>> > > > > James
>> > > >
>> > > >
>> > >
>> >
>> >
>> >
>>
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
>



--
Antoine Deschênes

I think you can dump banks, am I right? Maybe you could dump SIA-2 to
SIA-12 individually, and then send SIB, SIC, SID, MIA, MIB, MIC, MID.

If it doesn't want to send any sounds, then it's due for a reset I guess...
There are many options to get sounds from the K5, but they're working
on Windows and Linux only, unless you get Apple Logic.

Antoine

2008/7/23 Mark Lewis <misterhemi@...>:
> Yes, I use the dump button on the K5m to initiate the transfer.
>
> I tried to use the Mac version of kfuenf but couldn't get it to work.
>
> I was hoping to backup the sounds as they seem to be a set that I
> don't have and then load my sounds into it.

--
Antoine Deschênes

Yes, I use the dump button on the K5m to initiate the transfer.

I tried to use the Mac version of kfuenf but couldn't get it to work.

I was hoping to backup the sounds as they seem to be a set that I
don't have and then load my sounds into it.

Do you use the dump button on the K5m? I'm not so sure it's working
with recent computers. You could try to use the Kfuenf librarian to
download the sounds.

In my K5, V1.0 seemed to corrupt the memory quite easily when I edited
sounds with SysEx. You need to backup the sounds somewhere, and
desolder, solder the battery to reset the memory.



2008/7/23 misterhemi <misterhemi@...>:
> Hello,
>
> I don't know if anyone has had this problem before or not. I just received a
K5m that I won
> on eBay.
>
> Whenever I try to send sysex data FROM the K5m to my computer, I get an error
message:
>
> "<DUMP> BLOCK SIA-1 ERROR"
>
> It came with V1.0 firmware and I decided to upgrade it to V1.2 (I bought the
eproms
> previously) to see if that would remedy the problem but it remains the same.
>
> I also removed the midi cables just to see if it would transmit sysex data
(assuming it isn't
> looking for an acknowledgement or an echo) and I still have the same problem.
>
> I could probably save its internal programs one by one but that would be SO
slow!
>
> Any ideas anyone?????

--
Antoine Deschênes

Hello,

I don't know if anyone has had this problem before or not. I just received a K5m
that I won
on eBay.

Whenever I try to send sysex data FROM the K5m to my computer, I get an error
message:

"<DUMP> BLOCK SIA-1 ERROR"

It came with V1.0 firmware and I decided to upgrade it to V1.2 (I bought the
eproms
previously) to see if that would remedy the problem but it remains the same.

I also removed the midi cables just to see if it would transmit sysex data
(assuming it isn't
looking for an acknowledgement or an echo) and I still have the same problem.

I could probably save its internal programs one by one but that would be SO
slow!

Any ideas anyone?????

$15.00 US plus S/H and the d/cf they wanted filled out is now DOA...

--- In k5synth@yahoogroups.com, James Bong <jamesbong@...> wrote:
>
> How much are they charging you for it?
>
> James
>
> --- narfman96 <narfman96@...> wrote:
>
> > The balance only controls the volume for S1 and S2.
> > If S1 is all the
> > way down S2 is cranked. Other than the DDA envelope
> > (oh yeah the DHG
> > levels too) ahhh, where can S2 be turned down to
> > sublight.
> >
> > The aftertouch was easy. There's 2 pots on the
> > backside of the MI-004
> > board they say Gain (VR1) and Offset (VR2) on them.
> > Open Midi-Ox and
> > watch the pressure change the values for aftertouch
> > from 00 to F7.
> > Adjust these pots to get the best performance for
> > your preferences.
> > Offset is where it starts to kick in. Then the gain
> > adjusts how
> > quickly F7 cranks in. I like a smooth contollable
> > range that doesn't
> > rip my tendons out.... That's why I can tell the
> > notes from G3 to D4
> > in this K5 aren't as responsive as the rest.
> >
> > Whoohoo!!! I'm talking to Kawai about the Service
> > Manual. They are
> > soooo gooood in this day and age of crapping on us
> > hardware guys.
> > Oops did I say e-mu? Awww darn! Dirty bird!! I want
> > my money back!!!
> >
> > Anyway the manual should be on its way....  Fran
> >
> > --- In k5synth@yahoogroups.com, James Bong
> > <jamesbong@> wrote:
> > >
> > > How does it sound if you turn S1 all the way down,
> > and
> > > start turning up S2? Same distortion?
> > >
> > > Oh, and where was the after-touch adjustment? I'm
> > > always afraid I'm going to tip my stand over when
> > I'm
> > > using after touch modulation!
> > >
> > > James
> > > --- narfman96 <narfman96@> wrote:
> > >
> > > > Yes I do have a scope I just haven't gotten that
> > far
> > > > yet. Yesterday I
> > > > rebuilt the keyboard. This synth has a nice
> > action
> > > > when it's all
> > > > greased up and triggers every note. I found the
> > > > aftertouch
> > > > adjustments and got it more sensitive than the
> > key
> > > > bending tipping
> > > > over the stand mode it was originally set for.
> > The
> > > > aftertouch strip
> > > > has a few spots that are less sensitive but hey
> > it's
> > > > a beast....
> > > >
> > > > If it will help I can post the DAC's datasheet
> > here
> > > > in the files
> > > > section so you can see what weird output
> > > > configurations it can have.
> > > > Either current or voltage outputs can be used.
> > There
> > > > isn't any pot
> > > > for the offset zero. Also it seems like Kawai
> > > > doesn't use much of the
> > > > gain that's available. Maybe that's why it's so
> > > > noisy.
> > > >
> > > > The patches sound like they should if I turn the
> > > > balance so S2 is off
> > > > (-31). Except of course they're thin and
> > lifeless
> > > > without the other
> > > > voice mixed in. I saved a bank that way so I
> > could
> > > > check out the
> > > > keyboard. I can see where some of the noise
> > comes
> > > > from. The high
> > > > frequency response goes way out there. Most of
> > these
> > > > 80's and 90's
> > > > synths have low pass filters. This thing sounds
> > wide
> > > > open on top end!
> > > > Probably so you can hear the 128 harmonics in
> > all
> > > > their glory.
> > > >
> > > > Hopefully I won't be beat when I get home from
> > work
> > > > so I can play
> > > > around with this some more. Still haven't heard
> > from
> > > > Kawai yet about
> > > > the schematics. Also they always have me sign
> > their
> > > > non-disclosure
> > > > form so I'm leery about openly posting them in
> > the
> > > > group. Of course
> > > > helpful individuals are a different story.
> > Right???
> > > >
> > > > Fran
> > > >
> > > > --- In k5synth@yahoogroups.com, James Bong
> > > > <jamesbong@> wrote:
> > > > >
> > > > > You wouldn't happen to have an oscilloscope to
> > > > verify
> > > > > that the output of this chip is actual
> > problem, do
> > > > > you?
> > > > >
> > > > > If you do get the schematics, could you
> > possibly
> > > > get
> > > > > them scanned to share with the rest of us?
> > > > >
> > > > > James
> > > > >
> > > > > --- narfman96 <narfman96@> wrote:
> > > > >
> > > > > > I resoldered everything involved in this
> > part of
> > > > the
> > > > > > circuit. There
> > > > > > is a feedback resistor on the DAC for the
> > audio
> > > > > > output. This measures
> > > > > > 6.8k same as the working one. Maybe tonight
> > I'll
> > > > try
> > > > > > lowering this
> > > > > > value to see if the gain decreases.
> > > > > >
> > > > > > I'm not having much luck finding a PCM55HP
> > DAC.
> > > > > > Digikey lists it for
> > > > > > $38.50 with a long, long lead time... Crap!
> > > > Anyone
> > > > > > know of a source?
> > > > > >
> > > > > > Hopefully Kawai gets back to me today about
> > the
> > > > > > schematic.
> > > > > >
> > > > > > Thanks, Fran
> > > > > >
> > > > > > --- In k5synth@yahoogroups.com, James Bong
> > > > > > <jamesbong@> wrote:
> > > > > > >
> > > > > > > Does this chip have a bias circuit to set
> > the
> > > > > > min/max
> > > > > > > output voltage scale? It could be
> > something as
> > > > > > simple
> > > > > > > as a cold solder joint finally loosing
> > contact
> > > > and
> > > > > > > changing the bias. I'd check/re-solder the
> > > > solder
> > > > > > > joints to everything connected to the
> > chip,
> > > > and
> > > > > > the
> > > > > > > chip it's self.
> > > > > > >
> > > > > > > James
> > > > > >
> > > > > >
> > > > >
> > > >
> > > >
> > > >
> > >
> >
> >
> >
>

How much are they charging you for it?

James

--- narfman96 <narfman96@...> wrote:

> The balance only controls the volume for S1 and S2.
> If S1 is all the
> way down S2 is cranked. Other than the DDA envelope
> (oh yeah the DHG
> levels too) ahhh, where can S2 be turned down to
> sublight.
>
> The aftertouch was easy. There's 2 pots on the
> backside of the MI-004
> board they say Gain (VR1) and Offset (VR2) on them.
> Open Midi-Ox and
> watch the pressure change the values for aftertouch
> from 00 to F7.
> Adjust these pots to get the best performance for
> your preferences.
> Offset is where it starts to kick in. Then the gain
> adjusts how
> quickly F7 cranks in. I like a smooth contollable
> range that doesn't
> rip my tendons out.... That's why I can tell the
> notes from G3 to D4
> in this K5 aren't as responsive as the rest.
>
> Whoohoo!!! I'm talking to Kawai about the Service
> Manual. They are
> soooo gooood in this day and age of crapping on us
> hardware guys.
> Oops did I say e-mu? Awww darn! Dirty bird!! I want
> my money back!!!
>
> Anyway the manual should be on its way....  Fran
>
> --- In k5synth@yahoogroups.com, James Bong
> <jamesbong@...> wrote:
> >
> > How does it sound if you turn S1 all the way down,
> and
> > start turning up S2? Same distortion?
> >
> > Oh, and where was the after-touch adjustment? I'm
> > always afraid I'm going to tip my stand over when
> I'm
> > using after touch modulation!
> >
> > James
> > --- narfman96 <narfman96@...> wrote:
> >
> > > Yes I do have a scope I just haven't gotten that
> far
> > > yet. Yesterday I
> > > rebuilt the keyboard. This synth has a nice
> action
> > > when it's all
> > > greased up and triggers every note. I found the
> > > aftertouch
> > > adjustments and got it more sensitive than the
> key
> > > bending tipping
> > > over the stand mode it was originally set for.
> The
> > > aftertouch strip
> > > has a few spots that are less sensitive but hey
> it's
> > > a beast....
> > >
> > > If it will help I can post the DAC's datasheet
> here
> > > in the files
> > > section so you can see what weird output
> > > configurations it can have.
> > > Either current or voltage outputs can be used.
> There
> > > isn't any pot
> > > for the offset zero. Also it seems like Kawai
> > > doesn't use much of the
> > > gain that's available. Maybe that's why it's so
> > > noisy.
> > >
> > > The patches sound like they should if I turn the
> > > balance so S2 is off
> > > (-31). Except of course they're thin and
> lifeless
> > > without the other
> > > voice mixed in. I saved a bank that way so I
> could
> > > check out the
> > > keyboard. I can see where some of the noise
> comes
> > > from. The high
> > > frequency response goes way out there. Most of
> these
> > > 80's and 90's
> > > synths have low pass filters. This thing sounds
> wide
> > > open on top end!
> > > Probably so you can hear the 128 harmonics in
> all
> > > their glory.
> > >
> > > Hopefully I won't be beat when I get home from
> work
> > > so I can play
> > > around with this some more. Still haven't heard
> from
> > > Kawai yet about
> > > the schematics. Also they always have me sign
> their
> > > non-disclosure
> > > form so I'm leery about openly posting them in
> the
> > > group. Of course
> > > helpful individuals are a different story.
> Right???
> > >
> > > Fran
> > >
> > > --- In k5synth@yahoogroups.com, James Bong
> > > <jamesbong@> wrote:
> > > >
> > > > You wouldn't happen to have an oscilloscope to
> > > verify
> > > > that the output of this chip is actual
> problem, do
> > > > you?
> > > >
> > > > If you do get the schematics, could you
> possibly
> > > get
> > > > them scanned to share with the rest of us?
> > > >
> > > > James
> > > >
> > > > --- narfman96 <narfman96@> wrote:
> > > >
> > > > > I resoldered everything involved in this
> part of
> > > the
> > > > > circuit. There
> > > > > is a feedback resistor on the DAC for the
> audio
> > > > > output. This measures
> > > > > 6.8k same as the working one. Maybe tonight
> I'll
> > > try
> > > > > lowering this
> > > > > value to see if the gain decreases.
> > > > >
> > > > > I'm not having much luck finding a PCM55HP
> DAC.
> > > > > Digikey lists it for
> > > > > $38.50 with a long, long lead time... Crap!
> > > Anyone
> > > > > know of a source?
> > > > >
> > > > > Hopefully Kawai gets back to me today about
> the
> > > > > schematic.
> > > > >
> > > > > Thanks, Fran
> > > > >
> > > > > --- In k5synth@yahoogroups.com, James Bong
> > > > > <jamesbong@> wrote:
> > > > > >
> > > > > > Does this chip have a bias circuit to set
> the
> > > > > min/max
> > > > > > output voltage scale? It could be
> something as
> > > > > simple
> > > > > > as a cold solder joint finally loosing
> contact
> > > and
> > > > > > changing the bias. I'd check/re-solder the
> > > solder
> > > > > > joints to everything connected to the
> chip,
> > > and
> > > > > the
> > > > > > chip it's self.
> > > > > >
> > > > > > James
> > > > >
> > > > >
> > > >
> > >
> > >
> > >
> >
>
>
>

The balance only controls the volume for S1 and S2. If S1 is all the
way down S2 is cranked. Other than the DDA envelope (oh yeah the DHG
levels too) ahhh, where can S2 be turned down to sublight.

The aftertouch was easy. There's 2 pots on the backside of the MI-004
board they say Gain (VR1) and Offset (VR2) on them. Open Midi-Ox and
watch the pressure change the values for aftertouch from 00 to F7.
Adjust these pots to get the best performance for your preferences.
Offset is where it starts to kick in. Then the gain adjusts how
quickly F7 cranks in. I like a smooth contollable range that doesn't
rip my tendons out.... That's why I can tell the notes from G3 to D4
in this K5 aren't as responsive as the rest.

Whoohoo!!! I'm talking to Kawai about the Service Manual. They are
soooo gooood in this day and age of crapping on us hardware guys.
Oops did I say e-mu? Awww darn! Dirty bird!! I want my money back!!!

Anyway the manual should be on its way....  Fran

--- In k5synth@yahoogroups.com, James Bong <jamesbong@...> wrote:
>
> How does it sound if you turn S1 all the way down, and
> start turning up S2? Same distortion?
>
> Oh, and where was the after-touch adjustment? I'm
> always afraid I'm going to tip my stand over when I'm
> using after touch modulation!
>
> James
> --- narfman96 <narfman96@...> wrote:
>
> > Yes I do have a scope I just haven't gotten that far
> > yet. Yesterday I
> > rebuilt the keyboard. This synth has a nice action
> > when it's all
> > greased up and triggers every note. I found the
> > aftertouch
> > adjustments and got it more sensitive than the key
> > bending tipping
> > over the stand mode it was originally set for. The
> > aftertouch strip
> > has a few spots that are less sensitive but hey it's
> > a beast....
> >
> > If it will help I can post the DAC's datasheet here
> > in the files
> > section so you can see what weird output
> > configurations it can have.
> > Either current or voltage outputs can be used. There
> > isn't any pot
> > for the offset zero. Also it seems like Kawai
> > doesn't use much of the
> > gain that's available. Maybe that's why it's so
> > noisy.
> >
> > The patches sound like they should if I turn the
> > balance so S2 is off
> > (-31). Except of course they're thin and lifeless
> > without the other
> > voice mixed in. I saved a bank that way so I could
> > check out the
> > keyboard. I can see where some of the noise comes
> > from. The high
> > frequency response goes way out there. Most of these
> > 80's and 90's
> > synths have low pass filters. This thing sounds wide
> > open on top end!
> > Probably so you can hear the 128 harmonics in all
> > their glory.
> >
> > Hopefully I won't be beat when I get home from work
> > so I can play
> > around with this some more. Still haven't heard from
> > Kawai yet about
> > the schematics. Also they always have me sign their
> > non-disclosure
> > form so I'm leery about openly posting them in the
> > group. Of course
> > helpful individuals are a different story. Right???
> >
> > Fran
> >
> > --- In k5synth@yahoogroups.com, James Bong
> > <jamesbong@> wrote:
> > >
> > > You wouldn't happen to have an oscilloscope to
> > verify
> > > that the output of this chip is actual problem, do
> > > you?
> > >
> > > If you do get the schematics, could you possibly
> > get
> > > them scanned to share with the rest of us?
> > >
> > > James
> > >
> > > --- narfman96 <narfman96@> wrote:
> > >
> > > > I resoldered everything involved in this part of
> > the
> > > > circuit. There
> > > > is a feedback resistor on the DAC for the audio
> > > > output. This measures
> > > > 6.8k same as the working one. Maybe tonight I'll
> > try
> > > > lowering this
> > > > value to see if the gain decreases.
> > > >
> > > > I'm not having much luck finding a PCM55HP DAC.
> > > > Digikey lists it for
> > > > $38.50 with a long, long lead time... Crap!
> > Anyone
> > > > know of a source?
> > > >
> > > > Hopefully Kawai gets back to me today about the
> > > > schematic.
> > > >
> > > > Thanks, Fran
> > > >
> > > > --- In k5synth@yahoogroups.com, James Bong
> > > > <jamesbong@> wrote:
> > > > >
> > > > > Does this chip have a bias circuit to set the
> > > > min/max
> > > > > output voltage scale? It could be something as
> > > > simple
> > > > > as a cold solder joint finally loosing contact
> > and
> > > > > changing the bias. I'd check/re-solder the
> > solder
> > > > > joints to everything connected to the chip,
> > and
> > > > the
> > > > > chip it's self.
> > > > >
> > > > > James
> > > >
> > > >
> > >
> >
> >
> >
>

How does it sound if you turn S1 all the way down, and
start turning up S2? Same distortion?

Oh, and where was the after-touch adjustment? I'm
always afraid I'm going to tip my stand over when I'm
using after touch modulation!

James
--- narfman96 <narfman96@...> wrote:

> Yes I do have a scope I just haven't gotten that far
> yet. Yesterday I
> rebuilt the keyboard. This synth has a nice action
> when it's all
> greased up and triggers every note. I found the
> aftertouch
> adjustments and got it more sensitive than the key
> bending tipping
> over the stand mode it was originally set for. The
> aftertouch strip
> has a few spots that are less sensitive but hey it's
> a beast....
>
> If it will help I can post the DAC's datasheet here
> in the files
> section so you can see what weird output
> configurations it can have.
> Either current or voltage outputs can be used. There
> isn't any pot
> for the offset zero. Also it seems like Kawai
> doesn't use much of the
> gain that's available. Maybe that's why it's so
> noisy.
>
> The patches sound like they should if I turn the
> balance so S2 is off
> (-31). Except of course they're thin and lifeless
> without the other
> voice mixed in. I saved a bank that way so I could
> check out the
> keyboard. I can see where some of the noise comes
> from. The high
> frequency response goes way out there. Most of these
> 80's and 90's
> synths have low pass filters. This thing sounds wide
> open on top end!
> Probably so you can hear the 128 harmonics in all
> their glory.
>
> Hopefully I won't be beat when I get home from work
> so I can play
> around with this some more. Still haven't heard from
> Kawai yet about
> the schematics. Also they always have me sign their
> non-disclosure
> form so I'm leery about openly posting them in the
> group. Of course
> helpful individuals are a different story. Right???
>
> Fran
>
> --- In k5synth@yahoogroups.com, James Bong
> <jamesbong@...> wrote:
> >
> > You wouldn't happen to have an oscilloscope to
> verify
> > that the output of this chip is actual problem, do
> > you?
> >
> > If you do get the schematics, could you possibly
> get
> > them scanned to share with the rest of us?
> >
> > James
> >
> > --- narfman96 <narfman96@...> wrote:
> >
> > > I resoldered everything involved in this part of
> the
> > > circuit. There
> > > is a feedback resistor on the DAC for the audio
> > > output. This measures
> > > 6.8k same as the working one. Maybe tonight I'll
> try
> > > lowering this
> > > value to see if the gain decreases.
> > >
> > > I'm not having much luck finding a PCM55HP DAC.
> > > Digikey lists it for
> > > $38.50 with a long, long lead time... Crap!
> Anyone
> > > know of a source?
> > >
> > > Hopefully Kawai gets back to me today about the
> > > schematic.
> > >
> > > Thanks, Fran
> > >
> > > --- In k5synth@yahoogroups.com, James Bong
> > > <jamesbong@> wrote:
> > > >
> > > > Does this chip have a bias circuit to set the
> > > min/max
> > > > output voltage scale? It could be something as
> > > simple
> > > > as a cold solder joint finally loosing contact
> and
> > > > changing the bias. I'd check/re-solder the
> solder
> > > > joints to everything connected to the chip,
> and
> > > the
> > > > chip it's self.
> > > >
> > > > James
> > >
> > >
> >
>
>
>

Yes I do have a scope I just haven't gotten that far yet. Yesterday I
rebuilt the keyboard. This synth has a nice action when it's all
greased up and triggers every note. I found the aftertouch
adjustments and got it more sensitive than the key bending tipping
over the stand mode it was originally set for. The aftertouch strip
has a few spots that are less sensitive but hey it's a beast....

If it will help I can post the DAC's datasheet here in the files
section so you can see what weird output configurations it can have.
Either current or voltage outputs can be used. There isn't any pot
for the offset zero. Also it seems like Kawai doesn't use much of the
gain that's available. Maybe that's why it's so noisy.

The patches sound like they should if I turn the balance so S2 is off
(-31). Except of course they're thin and lifeless without the other
voice mixed in. I saved a bank that way so I could check out the
keyboard. I can see where some of the noise comes from. The high
frequency response goes way out there. Most of these 80's and 90's
synths have low pass filters. This thing sounds wide open on top end!
Probably so you can hear the 128 harmonics in all their glory.

Hopefully I won't be beat when I get home from work so I can play
around with this some more. Still haven't heard from Kawai yet about
the schematics. Also they always have me sign their non-disclosure
form so I'm leery about openly posting them in the group. Of course
helpful individuals are a different story. Right???

Fran

--- In k5synth@yahoogroups.com, James Bong <jamesbong@...> wrote:
>
> You wouldn't happen to have an oscilloscope to verify
> that the output of this chip is actual problem, do
> you?
>
> If you do get the schematics, could you possibly get
> them scanned to share with the rest of us?
>
> James
>
> --- narfman96 <narfman96@...> wrote:
>
> > I resoldered everything involved in this part of the
> > circuit. There
> > is a feedback resistor on the DAC for the audio
> > output. This measures
> > 6.8k same as the working one. Maybe tonight I'll try
> > lowering this
> > value to see if the gain decreases.
> >
> > I'm not having much luck finding a PCM55HP DAC.
> > Digikey lists it for
> > $38.50 with a long, long lead time... Crap! Anyone
> > know of a source?
> >
> > Hopefully Kawai gets back to me today about the
> > schematic.
> >
> > Thanks, Fran
> >
> > --- In k5synth@yahoogroups.com, James Bong
> > <jamesbong@> wrote:
> > >
> > > Does this chip have a bias circuit to set the
> > min/max
> > > output voltage scale? It could be something as
> > simple
> > > as a cold solder joint finally loosing contact and
> > > changing the bias. I'd check/re-solder the solder
> > > joints to everything connected to the chip, and
> > the
> > > chip it's self.
> > >
> > > James
> >
> >
>

You wouldn't happen to have an oscilloscope to verify
that the output of this chip is actual problem, do
you?

If you do get the schematics, could you possibly get
them scanned to share with the rest of us?

James

--- narfman96 <narfman96@...> wrote:

> I resoldered everything involved in this part of the
> circuit. There
> is a feedback resistor on the DAC for the audio
> output. This measures
> 6.8k same as the working one. Maybe tonight I'll try
> lowering this
> value to see if the gain decreases.
>
> I'm not having much luck finding a PCM55HP DAC.
> Digikey lists it for
> $38.50 with a long, long lead time... Crap! Anyone
> know of a source?
>
> Hopefully Kawai gets back to me today about the
> schematic.
>
> Thanks, Fran
>
> --- In k5synth@yahoogroups.com, James Bong
> <jamesbong@...> wrote:
> >
> > Does this chip have a bias circuit to set the
> min/max
> > output voltage scale? It could be something as
> simple
> > as a cold solder joint finally loosing contact and
> > changing the bias. I'd check/re-solder the solder
> > joints to everything connected to the chip, and
> the
> > chip it's self.
> >
> > James
>
>

I resoldered everything involved in this part of the circuit. There
is a feedback resistor on the DAC for the audio output. This measures
6.8k same as the working one. Maybe tonight I'll try lowering this
value to see if the gain decreases.

I'm not having much luck finding a PCM55HP DAC. Digikey lists it for
$38.50 with a long, long lead time... Crap! Anyone know of a source?

Hopefully Kawai gets back to me today about the schematic.

Thanks, Fran

--- In k5synth@yahoogroups.com, James Bong <jamesbong@...> wrote:
>
> Does this chip have a bias circuit to set the min/max
> output voltage scale? It could be something as simple
> as a cold solder joint finally loosing contact and
> changing the bias. I'd check/re-solder the solder
> joints to everything connected to the chip, and the
> chip it's self.
>
> James

Does this chip have a bias circuit to set the min/max
output voltage scale? It could be something as simple
as a cold solder joint finally loosing contact and
changing the bias. I'd check/re-solder the solder
joints to everything connected to the chip, and the
chip it's self.

James

--- narfman96 <narfman96@...> wrote:

> Hi,
> I've been troubleshooting a neglected K5 I found. I
> replaced the
> battery. Fixed a missing ground trace on the mix
> output. Verified the
> power supply voltages. There are a few keys that are
> hit and miss.
> Etc.
>
> The output whenever the S2 source is included in a
> patch is cranked
> and distorted. If I set the S1/S2 balance to -31 I
> can hear S1 at the
> normal volume with no distortion. As soon as the S2
> source is mixed
> in even at -30 the distortion appears. At 0 to +31
> it turns into a FM
> and ring modulated mush fest. It sounds analog to
> me. If I turn down
> the harmonics in the DHG for S2 to around 30 or so
> the distorion goes
> away. So it seems volume related.
>
> Using only a DVM I traced out the JRC opamps and
> they are working
> fine except for the clipping in IC9 on pin 7. Then I
> noticed the DAC
> output for IC14 is 2 to 3 times higher than IC15. I
> can vary these
> outputs with the balance as S2 is IC14 and S1 is
> IC15. Could IC14 the
> Burr-Brown PCM55HP DAC have failed and be causing
> this distorion?
> This is the first analog section in the synth. The
> only doubt I have
> is can the Kawai digital chips when they fail
> overdrive the DAC's
> capabilities? Doesn't seem like they could or if
> this did happen it
> should sound digital. Eh???
>
> Sorry for the lenghty post. I don't have the Service
> Manual or a
> schematic for this puppy. I need to find one and
> I've already signed
> their disclosure form. This is a V1.0 K5 and next I
> will make a V1.3
> 27C512 eprom for it. What's the 27C256 for, harmonic
> tables?
>
> Thanks for listening, Fran
>
>

Hi,
I've been troubleshooting a neglected K5 I found. I replaced the
battery. Fixed a missing ground trace on the mix output. Verified the
power supply voltages. There are a few keys that are hit and miss.
Etc.

The output whenever the S2 source is included in a patch is cranked
and distorted. If I set the S1/S2 balance to -31 I can hear S1 at the
normal volume with no distortion. As soon as the S2 source is mixed
in even at -30 the distortion appears. At 0 to +31 it turns into a FM
and ring modulated mush fest. It sounds analog to me. If I turn down
the harmonics in the DHG for S2 to around 30 or so the distorion goes
away. So it seems volume related.

Using only a DVM I traced out the JRC opamps and they are working
fine except for the clipping in IC9 on pin 7. Then I noticed the DAC
output for IC14 is 2 to 3 times higher than IC15. I can vary these
outputs with the balance as S2 is IC14 and S1 is IC15. Could IC14 the
Burr-Brown PCM55HP DAC have failed and be causing this distorion?
This is the first analog section in the synth. The only doubt I have
is can the Kawai digital chips when they fail overdrive the DAC's
capabilities? Doesn't seem like they could or if this did happen it
should sound digital. Eh???

Sorry for the lenghty post. I don't have the Service Manual or a
schematic for this puppy. I need to find one and I've already signed
their disclosure form. This is a V1.0 K5 and next I will make a V1.3
27C512 eprom for it. What's the 27C256 for, harmonic tables?

Thanks for listening, Fran