Should I try replacing the AD 7524 and/or the TL082? How hard are these to find ? Preslav On Tue, Feb 9, 2010 at 1:56 AM, jammie <jammie.emma@blueyonder.co.uk> wrote: > > > yes > > it could be a broken cv dac or it could be the opamp the tlo82 > > ----- Original Message ----- > From: "Preslav Lefterov" <plefterov@... <plefterov%40gmail.com>> > To: <emax@yahoogroups.com <emax%40yahoogroups.com>> > Sent: Monday, February 08, 2010 10:01 PM > Subject: Re: [emax] Re: Emax Problem Diagnosis > > > Jammie, > > > > Just tested: > > > > Preset Definition: Realtime controls: Pedal to FC - nothing; Pedal to > > Pitch > > - I hear it modulating the pitch. > > > > Then I tried MIDI A to FC: > > > > I assigned MIDI A to FC and modulated that from an external source > > (Cubase). > > When I assigned Midi A to Pitch it works and modulates the Pitch. When I > > switch to volume/frequency/pan - I get nothing. Should I be measuring the > > voltage across pin 3 of the ssm2300s while I'm modulating with MIDI A / > > Pedal? > > > > > > Preslav > > > > > > On Mon, Feb 8, 2010 at 2:40 PM, jammie <jammie.emma@....uk<jammie.emma%40blueyonder.co.uk>> > > > wrote: > > > >> > >> > >> you are not getting any cv voltage its just set to ov > >> > >> that no voltage > >> > >> so no voltage is being sent out by the ssm2300 > >> > >> ov means no resonance no volume no filtercut no pan > >> > >> try setting up an external contreol to the filter cutoff to if it will > >> sweep > >> > >> ----- Original Message ----- > >> From: "Preslav Lefterov" <plefterov@... <plefterov%40gmail.com><plefterov% > 40gmail.com>> > >> To: <emax@yahoogroups.com <emax%40yahoogroups.com> <emax% > 40yahoogroups.com>> > >> Sent: Monday, February 08, 2010 7:06 PM > >> Subject: Re: [emax] Re: Emax Problem Diagnosis > >> > >> > Jammie, > >> > > >> > Sorry for the delay. Got the readings: > >> > > >> > *IC41: * > >> > > >> > I have +10V on pin8, and -12V on pin4. > >> > > >> > *IC49:* > >> > > >> > I have +5V on pin 14 > >> > > >> > *SSM2300s:* > >> > > >> > On all 4 I consistently have the following readings: > >> > > >> > pin 7 = -4.87V, pin 16 = +10.0V, pin 3 = 0.00V > >> > > >> > > >> > Any other ideas? You mentioned I should be getting 0-5V on pin 3 from > >> > the > >> > >> > CV > >> > voltage on all ssm2300s...how can I test that the voltage goes up to > 5v > >> > since now it stays at 0.00v? > >> > > >> > > >> > Thanks, > >> > > >> > Preslav > >> > > >> > > >> > > >> > > >> > On Sat, Feb 6, 2010 at 4:04 PM, jammie > >> > <jammie.emma@... <jammie.emma%40blueyonder.co.uk> > <jammie.emma%40blueyonder.co.uk>> > > >> > >> > wrote: > >> > > >> >> > >> >> > >> >> no pins 8 +10v > >> >> pins 4 -12v are of off the tl082 ic41 > >> >> > >> >> pin 3 gnd > >> >> pin 14 +5v are from the ic49 ad7524 > >> >> > >> >> i said use pin 3 ground as your reference ground for testing the pins > > >> >> on > >> >> the > >> >> tl082 > >> >> > >> >> pin 3 on the ssm2300 is the cv voltage check this to see if you are > >> >> getting > >> >> > >> >> the cv 0-5v > >> >> > >> >> the rest of the pins for the ssm2300 are correct > >> >> > >> >> ----- Original Message ----- > >> >> From: "Preslav Lefterov" <plefterov@...<plefterov%40gmail.com> > >> >> <plefterov%40gmail.com><plefterov% > >> 40gmail.com>> > >> >> To: <emax@yahoogroups.com <emax%40yahoogroups.com> <emax% > 40yahoogroups.com> <emax% > >> 40yahoogroups.com>> > >> >> Sent: Saturday, February 06, 2010 8:14 PM > >> >> Subject: Re: [emax] Re: Emax Problem Diagnosis > >> >> > >> >> > Jammie, > >> >> > > >> >> > Ok let me run through this stuff and make sure I understand > >> >> > correctly > >> >> > (I > >> >> > should be able to do all the tests later today or tomorrow): > >> >> > > >> >> > 1. SSM2300s are fed by the *74HCT273* latching circuit. Is this the > >> >> > name > >> >> > of > >> >> > the actual circuit as per the schematics or is it a specific IC or > >> >> > other > >> >> > component? > >> >> > > >> >> > > >> >> > 2. I need to check the following pins on *IC49 (AD7524): * > >> >> > * > >> >> > ----> pin 8 should be +10V > >> >> > -----> pin 4 should be -12V > >> >> > -----> pin 3 is GROUND > >> >> > -----> pin 14 should be +5V > >> >> > > >> >> > 3. I need to check the following pins on IC41 (tlo82): > >> >> > -----> pin 1 should be 0-5V (this is the output to all SSM2300s) > >> >> > > >> >> > Which pin on IC41(tlo82) is GROUND? > >> >> > > >> >> > 4. I need to check the voltages on these pins on all SSM2300s: > >> >> > > >> >> > ----> pin 7 should be -5V > >> >> > ----> pin 8 is GROUND > >> >> > ----> pin 16 should be +10V > >> >> > > >> >> > 5. ICil327 is the -5V regulator, so if I am nto getting this > voltage > >> to > >> >> > the > >> >> > SSM2300s I can try replacing this? > >> >> > > >> >> > 6. Transistor TIP29 / QQ306 is the +10V regulator. It is attached > to > >> >> > a > >> >> > heatsink ZE323. If I am not getting +10V I can try replacing this > >> >> > transistor? > >> >> > > >> >> > > >> >> > Just wanted to summarize your instructions. I will check all this > >> stuff > >> >> as > >> >> > soon as I get to the studio (there is a snowstorm here and my car > is > >> >> stuck > >> >> > currently). > >> >> > > >> >> > > >> >> > Thank you for guiding me through this again. > >> >> > > >> >> > > >> >> > Preslav > >> >> > > >> >> > > >> >> > > >> >> > * > >> >> > > >> >> > On Sat, Feb 6, 2010 at 10:26 AM, jammie > >> >> > <jammie.emma@blueyonder.co.uk <jammie.emma%40blueyonder.co.uk> > >> >> > <jammie.emma%40blueyonder.co.uk><jammie.emma% > > >> 40blueyonder.co.uk>>wrote: > >> > >> >> > > >> >> >> > >> >> >> > >> >> >> the -5v regulator is ic il327 > >> >> >> > >> >> >> the tip29 npn power transister does the 10v it is qq306 it is > >> attached > >> >> to > >> >> >> t0-220 heatsink ze323 > >> >> >> > >> >> >> ----- Original Message ----- > >> >> >> From: "Preslav Lefterov" > >> >> >> <plefterov@... <plefterov%40gmail.com><plefterov% > 40gmail.com> > >> >> >> <plefterov%40gmail.com><plefterov% > >> >> 40gmail.com>> > >> >> >> To: <emax@yahoogroups.com <emax%40yahoogroups.com> <emax% > 40yahoogroups.com> <emax% > >> 40yahoogroups.com> <emax% > >> >> 40yahoogroups.com>> > >> >> >> Sent: Saturday, February 06, 2010 1:35 AM > >> >> >> Subject: Re: [emax] Re: Emax Problem Diagnosis > >> >> >> > >> >> >> > Thanks for your help. Here are the readings: > >> >> >> > > >> >> >> > OR/GR = 12.48V > >> >> >> > YE/GR = 5.0V > >> >> >> > PU/GR = 12.18 (if i measure with red probe on green wire and > >> >> >> > black > >> >> >> > probe > >> >> >> > on > >> >> >> > the purple) or -12.18V (if I measure with the red probe on the > >> >> >> > purple > >> >> >> > and > >> >> >> > black probe on the green) > >> >> >> > > >> >> >> > The floppy drive works perfectly...it loads the OS and and > >> >> >> > samples/presets. > >> >> >> > > >> >> >> > I appreciate your time. > >> >> >> > > >> >> >> > Preslav > >> >> >> > > >> >> >> > On Fri, Feb 5, 2010 at 7:17 PM, jammie > >> >> >> > <jammie.emma@blueyonder.co.uk <jammie.emma%40blueyonder.co.uk> > >> >> >> > <jammie.emma%40blueyonder.co.uk><jammie.emma% > >> 40blueyonder.co.uk> > >> >> <jammie.emma%40blueyonder.co.uk>> > >> >> > >> >> >> > >> >> >> > wrote: > >> >> >> > > >> >> >> >> > >> >> >> >> > >> >> >> >> > >> >> >> >> test each wire conection > >> >> >> >> > >> >> >> >> orange and green wires red probe on the orange black probe on > >> >> >> >> the > >> >> >> >> green > >> >> >> >> for > >> >> >> >> +12v > >> >> >> >> > >> >> >> >> yellow and green wires red probe for yellow wire black probe on > >> the > >> >> >> green > >> >> >> >> wire for +5v > >> >> >> >> > >> >> >> >> purple and green wires red probe on the green wire black probe > >> >> >> >> on > >> >> >> >> the > >> >> >> >> purple wire for -12v > >> >> >> >> > >> >> >> >> test this for me and give me your readings > >> >> >> >> > >> >> >> >> does the floppy drive work as this is the 5v line > >> >> >> >> > >> >> >> >> the 5 v on the mother boards for other circuits gets its 5v > from > >> >> power > >> >> >> >> regulators of the +12v supply > >> >> >> >> > >> >> >> >> ----- Original Message ----- > >> >> >> >> From: preslavl > >> >> >> >> To: emax@yahoogroups.com <emax%40yahoogroups.com> <emax% > 40yahoogroups.com> <emax% > >> 40yahoogroups.com> <emax% > >> >> 40yahoogroups.com> <emax% > >> >> >> 40yahoogroups.com> > >> >> >> >> Sent: Friday, February 05, 2010 9:37 PM > >> >> >> >> Subject: [emax] Re: Emax Problem Diagnosis > >> >> >> >> > >> >> >> >> So I tried testing the voltages at the connector that goes > >> >> >> >> between > >> >> the > >> >> >> PS > >> >> >> >> board and the CPU Board. I tested on the PS side. If I follow > >> >> >> >> the > >> >> >> >> color > >> >> >> >> coding I read in a message on here somewhere: Yellow (+5V), > >> >> >> >> Orange > >> >> >> >> (+12V), > >> >> >> >> Purple (-12V), and Green (0V/Ground). > >> >> >> >> > >> >> >> >> I get nowhere near those voltages...now I might be doing this > >> >> >> >> completely > >> >> >> >> wrong, but I get +12V at the Green wire, and 0v at the Yellow > >> >> >> >> (where > >> >> I > >> >> >> >> should be getting +5V). I also get +17V at the Orange wire... > >> >> >> >> > >> >> >> >> Again, I'm not sure if I'm testing at the correct points. By > the > >> >> >> >> way > >> >> >> >> I'm > >> >> >> >> still getting sound out of the Emax so it has not exploded in > my > >> >> hands > >> >> >> as > >> >> >> >> of > >> >> >> >> yet. > >> >> >> >> > >> >> >> >> --- In emax@yahoogroups.com <emax%40yahoogroups.com> <emax% > 40yahoogroups.com> <emax% > >> 40yahoogroups.com> <emax% > >> >> 40yahoogroups.com> <emax% > >> >> > >> >> >> 40yahoogroups.com>, "jammie" > >> >> >> > >> >> >> >> <jammie.emma@...> wrote: > >> >> >> >> > > >> >> >> >> > right the cv (control voltages for the filter cutoff vca and > >> >> >> >> > resonance > >> >> >> >> are sent by the cv circuit ranging from 0v-5v > >> >> >> >> > > >> >> >> >> > which is sent by the cpu for control off the filter depending > > >> >> >> >> > on > >> >> >> >> > envelope > >> >> >> >> settings or external controllers > >> >> >> >> > > >> >> >> >> > now the ssm2300 are sample and hold circuits they send out > the > >> >> >> >> > digital > >> >> >> >> info into analog voltages which are sampled then transmitted as > > >> >> >> >> a > >> >> >> voltage > >> >> >> >> in > >> >> >> >> the range of 0-5v 0v = 0 resonance 5v = full resonance > >> >> >> >> > > >> >> >> >> > or cut off or vca volume > >> >> >> >> > > >> >> >> >> > thats what the first 3 ssm2300 deal with > >> >> >> >> > > >> >> >> >> > the 4th ssm2300 deals with the digital signal comming from > the > >> >> >> >> > dacs > >> >> >> >> > this > >> >> >> >> is the samples that are transmitted from the ram to the dacs > and > >> to > >> >> >> >> the > >> >> >> >> samplre and hold circuits which send out voltages 0-5v which > >> >> corispond > >> >> >> to > >> >> >> >> the digital sound into analog format > >> >> >> >> > > >> >> >> >> > now if you are getting sound out then the ssm2300 for that > >> >> >> >> > part > >> >> >> >> > of > >> >> >> >> > the > >> >> >> >> circuit is working it seems to be the cv circuit that you are > >> >> >> >> having > >> >> a > >> >> >> >> problem with not being sent into the ssm2300 to be made into > the > >> >> >> >> analog > >> >> >> >> control voltages > >> >> >> >> > > >> >> >> >> > ----- Original Message ----- > >> >> >> >> > From: preslavl > >> >> >> >> > To: emax@yahoogroups.com <emax%40yahoogroups.com> <emax% > 40yahoogroups.com> <emax% > >> 40yahoogroups.com> <emax% > >> >> 40yahoogroups.com> <emax% > >> >> >> 40yahoogroups.com> > >> >> >> >> > Sent: Friday, February 05, 2010 7:18 PM > >> >> >> >> > Subject: [emax] Re: Emax Problem Diagnosis > >> >> >> >> > > >> >> >> >> > > >> >> >> >> > > >> >> >> >> > Let me make sure I understand you correctly: > >> >> >> >> > > >> >> >> >> > What you describe is one test: checking that the 2300s are > >> >> >> >> > getting > >> >> >> >> > the > >> >> >> >> correct voltage from the 5v supply? And I should be getting +/- > >> 12V > >> >> >> >> and > >> >> >> >> ground? Are there testpoints visible or is it pretty obvious > >> >> >> >> where > >> > >> >> >> >> to > >> >> >> >> test > >> >> >> >> it? > >> >> >> >> > > >> >> >> >> > Thanks for the quick reply > >> >> >> >> > > >> >> >> >> > --- In emax@yahoogroups.com <emax%40yahoogroups.com> <emax% > 40yahoogroups.com> <emax% > >> 40yahoogroups.com> <emax% > >> >> 40yahoogroups.com> <emax% > >> >> > >> >> >> 40yahoogroups.com>, "jammie" > >> >> >> > >> >> >> >> <jammie.emma@> wrote: > >> >> >> >> > > > >> >> >> >> > > check the 5 v supply as this is the control voltage of the > >> >> filters > >> >> >> >> > > > >> >> >> >> > > the cv control gets sent to 1 of the 2300 for fc 1 for > >> >> >> >> > > resonance > >> >> 1 > >> >> >> is > >> >> >> >> for the vca and thhe other is for the dacs for the 8 note > >> polyphony > >> >> >> >> each > >> >> >> >> octal sample and hold circuits for each of the functions > >> >> >> >> > > > >> >> >> >> > > check to see that you are getting the corect voltage for > >> >> operation > >> >> >> of > >> >> >> >> the 2300 or 4051 or smp08 > >> >> >> >> > > > >> >> >> >> > > if i was to change them then i would upgrade them to the > >> >> >> >> > > newer > >> >> >> faster > >> >> >> >> slew rate the smp08 are the best and are from analog devices > and > >> >> >> >> are > >> >> >> >> direct > >> >> >> >> replacements for the ssm2300 which are 4051 equivelents made by > >> emu > >> >> >> >> > > > >> >> >> >> > > the smp08 they have a faster slew rate and have faster > >> >> >> >> > > transient > >> >> >> >> response with less distortion > >> >> >> >> > > > >> >> >> >> > > > >> >> >> >> > > you should be getting 12vdc vdd and grnd > >> >> >> >> > > > >> >> >> >> > > ----- Original Message ----- > >> >> >> >> > > From: preslavl > >> >> >> >> > > To: emax@yahoogroups.com <emax%40yahoogroups.com> <emax% > 40yahoogroups.com> <emax% > >> 40yahoogroups.com> <emax% > >> >> 40yahoogroups.com> <emax% > >> >> >> 40yahoogroups.com> > >> >> >> >> > > Sent: Friday, February 05, 2010 5:54 PM > >> >> >> >> > > Subject: [emax] Emax Problem Diagnosis > >> >> >> >> > > > >> >> >> >> > > > >> >> >> >> > > > >> >> >> >> > > Hello, > >> >> >> >> > > > >> >> >> >> > > I wanted to see if I can get some help diagnosing the > >> >> >> >> > > problem(s) > >> >> >> >> > > of > >> >> >> >> > > an > >> >> >> >> Emax I i just purchased. > >> >> >> >> > > > >> >> >> >> > > Here are they symptoms: > >> >> >> >> > > > >> >> >> >> > > - No Frequency Cutoff - I calibrated the data slider and it > >> >> >> registers > >> >> >> >> the frequency cutoff (FC) going up in numbers but you cannot > >> >> >> >> hear > >> >> >> >> any > >> >> >> >> change. > >> >> >> >> > > > >> >> >> >> > > - No Attack in the ADSR or the filter ADSR - cannot hear an > >> >> >> >> > > increase > >> >> >> > >> >> >> >> > > in > >> >> >> >> attack even when the values increase. > >> >> >> >> > > > >> >> >> >> > > - No Volume - volume slider was calibrated and it seems to > >> work > >> >> >> >> > > but > >> >> >> >> moving it up or down does not make a difference...volume seems > >> >> >> >> to > >> >> >> >> be > >> >> >> >> at > >> >> >> >> 100%. > >> >> >> >> > > > >> >> >> >> > > These are pretty much all the symptoms I've notices so far. > >> >> >> >> > > > >> >> >> >> > > Things I've covered so far: > >> >> >> >> > > > >> >> >> >> > > - I replaced the 4 SSM 2300 that were in the sampler - it > >> >> >> >> > > did > >> >> >> >> > > not > >> >> >> >> > > seem > >> >> >> >> to make ANY difference. I replaced the original chips with ones > >> >> >> >> marked: > >> >> >> >> "SSM2300 8652". I purchased these on eBAY. Could this be the > >> issue? > >> >> >> >> > > > >> >> >> >> > > - I went through the recalibration procedure - no change. > >> >> >> >> > > > >> >> >> >> > > - I performed the diagnostic tests inside the Master menu > >> >> >> >> > > (8, > >> >> >> >> > > 8, > >> >> >> >> > > YES). > >> >> >> >> ERAM and Bank RAM checked out OK and all other tests seemed to > >> have > >> >> >> >> passed. > >> >> >> >> > > > >> >> >> >> > > Any ideas anyone? > >> >> >> >> > > > >> >> >> >> > > Thank you, > >> >> >> >> > > > >> >> >> >> > > Preslav > >> >> >> >> > > > >> >> >> >> > > > >> >> >> >> > > > >> >> >> >> > > > >> >> >> >> > > > >> >> >> >> > > > >> >> >> >> > > ---------------------------------------------------------- > >> >> >> >> > > > >> >> >> >> > > > >> >> >> >> > > > >> >> >> >> > > No virus found in this incoming message. > >> >> >> >> > > Checked by AVG - www.avg.com > >> >> >> >> > > Version: 8.5.435 / Virus Database: 271.1.1/2669 - Release > >> Date: > >> >> >> >> 02/05/10 07:35:00 > >> >> >> >> > > > >> >> >> >> > > > >> >> >> >> > > [Non-text portions of this message have been removed] > >> >> >> >> > > > >> >> >> >> > > >> >> >> >> > > >> >> >> >> > > >> >> >> >> > > >> >> >> >> > > >> >> >> >> > > >> >> >> >> > ---------------------------------------------------------- > >> >> >> >> > > >> >> >> >> > > >> >> >> >> > > >> >> >> >> > No virus found in this incoming message. > >> >> >> >> > Checked by AVG - www.avg.com > >> >> >> >> > Version: 8.5.435 / Virus Database: 271.1.1/2669 - Release > >> >> >> >> > Date: > >> >> >> >> > 02/05/10 > >> >> >> >> 07:35:00 > >> >> >> >> > > >> >> >> >> > > >> >> >> >> > [Non-text portions of this message have been removed] > >> >> >> >> > > >> >> >> >> > >> >> >> >> ---------------------------------------------------------- > >> >> >> >> > >> >> >> >> No virus found in this incoming message. > >> >> >> >> Checked by AVG - www.avg.com > >> >> >> >> Version: 8.5.435 / Virus Database: 271.1.1/2669 - Release Date: > >> >> >> >> 02/05/10 > >> >> >> >> 07:35:00 > >> >> >> >> > >> >> >> >> [Non-text portions of this message have been removed] > >> >> >> >> > >> >> >> >> > >> >> >> >> > >> >> >> > > >> >> >> > > >> >> >> > [Non-text portions of this message have been removed] > >> >> >> > > >> >> >> > > >> >> >> > > >> >> >> > ------------------------------------ > >> >> >> > > >> >> >> > Emax and Emax II User's Group Website > >> >> >> > > >> >> >> > http://www.silveriafamily.comYahoo! Groups Links > >> >> >> > >> >> >> > > >> >> >> > > >> >> >> > > >> >> >> > >> >> >> ---------------------------------------------------------- > >> >> >> > >> >> >> No virus found in this incoming message. > >> >> >> Checked by AVG - www.avg.com > >> >> >> Version: 8.5.435 / Virus Database: 271.1.1/2669 - Release Date: > >> >> >> 02/05/10 > >> >> >> 07:35:00 > >> >> >> > >> >> >> > >> >> >> > >> >> > > >> >> > > >> >> > [Non-text portions of this message have been removed] > >> >> > > >> >> > > >> >> > > >> >> > ------------------------------------ > >> >> > > >> >> > Emax and Emax II User's Group Website > >> >> > > >> >> > http://www.silveriafamily.comYahoo! Groups Links > >> >> > > >> >> > > >> >> > > >> >> > >> >> ---------------------------------------------------------- > >> >> > >> >> No virus found in this incoming message. > >> >> Checked by AVG - www.avg.com > >> >> Version: 8.5.435 / Virus Database: 271.1.1/2671 - Release Date: > >> >> 02/06/10 > >> >> 07:35:00 > >> >> > >> >> > >> >> > >> > > >> > > >> > [Non-text portions of this message have been removed] > >> > > >> > > >> > > >> > ------------------------------------ > >> > > >> > Emax and Emax II User's Group Website > >> > > >> > http://www.silveriafamily.comYahoo! Groups Links > >> > > >> > > >> > > >> > >> ---------------------------------------------------------- > >> > >> No virus found in this incoming message. > >> Checked by AVG - www.avg.com > >> Version: 8.5.435 / Virus Database: 271.1.1/2675 - Release Date: 02/08/10 > >> 07:35:00 > >> > >> > >> > > > > > > [Non-text portions of this message have been removed] > > > > > > > > ------------------------------------ > > > > Emax and Emax II User's Group Website > > > > http://www.silveriafamily.comYahoo! Groups Links > > > > > > > > ---------------------------------------------------------- > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 8.5.435 / Virus Database: 271.1.1/2675 - Release Date: 02/08/10 > 07:35:00 > > > [Non-text portions of this message have been removed]
Message
Re: [emax] Re: Emax Problem Diagnosis
2010-02-09 by Preslav Lefterov