2015-02-20 by CHRIST SEEN
I hope this is the right place to post and ask for info on stuff.
I just got a 701 and I can't seem to get the accomp. to work...
I don't know if it's broke, or am I doing something wrong.
Would love to find a manual both a user and service & anything else relating to this machine.
Thanx
2015-02-21 by christseen@...
I did just score these thnx respectively to MATRIXSYNTH & Loscha
Yet no user manual just yet... Still hoping to get this...
Also on Matrixsynth's blog - there is a mod. posted.
http://www.matrixsynth.com/2010/06/casiotone-701-mystery-mod-discovered.html
Not extremely well documented, yet might be easy enough to figure out...
2015-02-21 by christseen@...
2015-03-01 by christseen@...
Yeah I think it's broke :(
Also wondering about some extra bits not attach to the boards...
Any one ever work on these/ know about them/ have service manual???
THNX
2015-03-01 by Tom Green
$25.00 for the OEM Service Manual (Item #31245), $33.00 for the OEM Owner's Manual (Item #31247).
-Tom
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On Sun, Mar 1, 2015 at 8:12 AM,
christseen@... [casiocollectors]
<casiocollectors@yahoogroups.com.au> wrote:
Yeah I think it's broke :(
Also wondering about some extra bits not attach to the boards...
Any one ever work on these/ know about them/ have service manual???
THNX
2015-03-03 by christseen@...
thnx Tom, if all else fails I might just drop the 25$
I have the 701 manual - Casiotone 701 Textbook & a Technical_Guide_For_Casiotone
Yet no trouble shooting guild, which I would hope would be in the service manual.
Though also know MANY trouble shooting guilds are balls... So not looking to find out @ 25$
If all else fails I guess I will have no choice. Well maybe sell the rig and get one that works.
This one was suppose to work, and was shipped VERY lax, and got damage.
I payed 151& yet got back 90 & AM thinking I should've got more...
I would like to mod. it though too...
Thnx again Tom
2015-03-03 by Tom Green
You're welcome. I purchased a Service Manual from them for my CT-360, which helped me a lot with my mods/circuit-bending. You can see the almost finished result on my website here: <
http://barkonarova.weebly.com/space-gristle.html> I named it the "Space Gristle." Crazy machine now!
Anyway, what's wrong with your 701?
-Tom
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On Tue, Mar 3, 2015 at 2:12 AM,
christseen@... [casiocollectors]
<casiocollectors@yahoogroups.com.au> wrote:
thnx Tom, if all else fails I might just drop the 25$
I have the 701 manual - Casiotone 701 Textbook & a Technical_Guide_For_Casiotone
Yet no trouble shooting guild, which I would hope would be in the service manual.
Though also know MANY trouble shooting guilds are balls... So not looking to find out @ 25$
If all else fails I guess I will have no choice. Well maybe sell the rig and get one that works.
This one was suppose to work, and was shipped VERY lax, and got damage.
I payed 151& yet got back 90 & AM thinking I should've got more...
I would like to mod. it though too...
Thnx again Tom
2015-03-04 by christseen@...
Nice web page Tom.
most LOVELY instruments...
I for sure must spend some more time looking at them all again. & again most likely too... :)
Well my 701 seems to A: not be recording correctly & B: the accomp. section plays NO chords
in any mode (fingrd/auto/arp.) I am blaming this upon damage done either in shipping or made to look such.
701's have big chunky wood as you most likely know, and there was nothing between them and the box.
There was hardly anything in the box to protect the entire unit for that matter.
Well on the arp./chord/accomp side, there ise a big chuck bashed out/ pushed in etc.
I have seen this happen on organs (which I have 7) if they are jarred.
the speaker on the entire other side also became dislodged, hinting @ the impact.
Both fuses are in tact it seems, so I am a bit lost. Also looking up some stuff upon the 701 there are some
mods I'd like to do, and some empty slots I've heard nobody talk about thus far, as I have found.
So I have many questions and inquiries.
I really enjoy cheesy auto chords & was so stoked to hear these, yet now I am dead in the water.
Sorry for long rant...
I was org. thinking I was just dumb and the 701 didn't work as simple as most ALL other keyboards/organs
(turn chord switch ON) and I'm just doing something wrong, yet I am pretty sure it's malfunctioning.
2015-03-05 by Tom Green
So it sounds like your 701's issues are due to damage rather than some electrical component failure (of course the damage could have CAUSED electrical component failure...). This might be "relatively" easy to find the cause of. What have you done on it so far? First step for me would be to open it up and check all the circuit boards for physical damage. Look for cracks - could be major breaks or small hairline cracks, just enough to break a trace and stop continuity. I'd look for disconnected or broken wires/ribbon cables between boards also. The Chord switch itself could be a problem too - maybe it was corroded and never did work. You could disconnect and remove it and check it for continuity. Also look for larger components that may have gotten jostled when the thing got smashed - maybe their solder connections were broken loose - try wiggling things and see is the solder pads move.
I'd be willing to try and help you through this - I'm no expert, but I learned a hell of a lot about how my CT-360 functions while modifying it. Do you have a good camera (and know how to use it)? If you could take a bunch of pictures and email them to me, that'd help. I might be able to identify the chord sections of the circuit boards for you.
If you can, send me:
1. Overall photos, outside & inside,
2. Close-ups of the damage - outside & inside.
3. Good clear shots of each circuit board, both sides of each board if possible.
Are you good with soldering & de-soldering?
-Tom
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On Wed, Mar 4, 2015 at 7:55 AM,
christseen@... [casiocollectors]
<casiocollectors@yahoogroups.com.au> wrote:
Nice web page Tom.
most LOVELY instruments...
I for sure must spend some more time looking at them all again. & again most likely too... :)
Well my 701 seems to A: not be recording correctly & B: the accomp. section plays NO chords
in any mode (fingrd/auto/arp.) I am blaming this upon damage done either in shipping or made to look such.
701's have big chunky wood as you most likely know, and there was nothing between them and the box.
There was hardly anything in the box to protect the entire unit for that matter.
Well on the arp./chord/accomp side, there ise a big chuck bashed out/ pushed in etc.
I have seen this happen on organs (which I have 7) if they are jarred.
the speaker on the entire other side also became dislodged, hinting @ the impact.
Both fuses are in tact it seems, so I am a bit lost. Also looking up some stuff upon the 701 there are some
mods I'd like to do, and some empty slots I've heard nobody talk about thus far, as I have found.
So I have many questions and inquiries.
I really enjoy cheesy auto chords &; was so stoked to hear these, yet now I am dead in the water.
Sorry for long rant...
I was org. thinking I was just dumb and the 701 didn't work as simple as most ALL other keyboards/organs
(turn chord switch ON) and I'm just doing something wrong, yet I am pretty sure it's malfunctioning.
2015-03-17 by cowindler01@...
If your accompaniment fails, check if one of the DACs is dead. Someone e-mailed me that in his Casiotone 701 the rare DAC IC "AM6012PC" died and that he successfully replaced 2 of them with the modern type "Analog Devices DAC312". It is unknown if these generally suffer of ageing, but another e-mail confirmed that they tend to die. The 401 has the same part connected with its main voice CPU, while the direct successor Casiotone 403 already had the DAC hybrid "EXK-SIOL0025C" (12 pin SIL) - possibly to improve reliability.
I don't own a 701 (only MT-70 and 1000P) but want to document the wiring and pinout of the main ICs to search for eastereggs. Yet I only found the Casiotone 1000P service manual which has the same sound ICs but no accompaniment CPU.
I already wrote a preliminary description of the sound IC, but don't know all functions. Here is my summary:
The Music LSI "Hitachi HD43517" (42 pin DIL) is a 4 note polyphonic sound IC based on additive synthesis, that became famous by the synthesizer Casiotone 1000p. Each polyphony channel is mixing 5 harmonics (sine waves) with different digital envelopes in a similar manner like a drawbar organ. The IC outputs 12 bit digital audio to an external DAC and (like the later D933) 3 additional highest DAC bits control an expander circuit (sort of fast switching VCA, US patent 4414878) to increase dynamic range. (Without expander the DAC waveform tip looks sunken in like a collapsed copula and sounds distorted.) A sample & hold circuit then removes high frequency components. Interesting is that the IC can route its output as digital audio into another HD43517 for digital mixing through thats DAC to simplify analogue wiring. Unfortunately this wastes another DAC bit, and with only about 25kHz output frequency (due to the additional summing of 5 overtones per channel) the specs and tone quality are inferior to the earlier D931C. Interesting is that the internal signal processing (US patent 4453440) already resembles phase distortion, using phase-shifted sine wave addition from a 12 bit lookup table for fast multiplication. Frequency- and phase data resolution for each overtone is 20 bit, with 7 bit envelope controls.
Multiple HD43517 (up to 3?, existing in Casiotone 701) can be controlled by one CPU on the same 8 bit data bus. Normally each sound IC outputs audio through its own resistor ladder DAC, but in master-slave mode they can output through the DAC of the master. For this the signals DAD (serial sound data), EVD (envelope data) and SYC (sync) are sent from slave to master sound IC. (The slave's DAC has to be muted externally - e.g. by its sample & hold stage.) DAD and EVD are disconnected to select normal mode.
If you have a copy of the Casiotone 701 service manual, please scan it and inform me by e-mail. (But do not e-mail anything >300KB without warning. For large PDF use a filehoster and only e-mail a link.)
MAY THE SOFTWARE BE WITH YOU!
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I (teachmaster of LOGOLOGIE - the first cyberage-religion!) I
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2015-03-19 by christseen@...
cheers - for that info...
I wonder if the problem with my mt-70 is the same as the 700 too...
Hmmmm...???
Thanx again, will look into it for sure...
2015-03-19 by christseen@...
p.s. also thnx for all yr werkes on the net. You are for sure a top choice for info :)
2015-03-26 by christseen@...
Tom I sent you an e-mail quit a bit ago - are you around Xman?
2015-03-26 by Tom Green
Yeah, I'm here. Gee, I never got any more emails from you - I wondered what happened. Thought maybe you had fixed it. :-)
Last email I got from you was on March 4th. Here's a snippet:
"Nice web page Tom.
most LOVELY instruments...
I for sure must spend some more time looking at them all again. & again most likely too... :)
Well my 701 seems to A: not be recording correctly & B: the accomp. section plays NO chords...."
And I responded on March 5th (snippet):
"So it sounds like your 701's issues are due to damage rather than some
electrical component failure (of course the damage could have CAUSED
electrical component failure...). This might be "relatively" easy to
find the cause of...." And so on.
Nothing since then. Can you re-send what ever it was?
-Tom
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2015-03-26 by christseen@...
I sent it to an e-mail (can't remember where I got it, maybe yr web page) Xman-g.mail (with some numbers).
I didn't post it here. figured I didn't want to clutter this, and figured would just post results.
Is that xman email good or no?
2015-03-27 by Tom Green
2015-03-27 by christseen@...
ok, yes - I just resent it...
2015-03-27 by Tom Green
Ok, got it this time! I'll look over everything tonight if I get time, or over the weekend, and get back to you.
-Tom
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