The Sequential Circuits 615 Multi-Trak FAQ by Trevor Blake Edition 2.2 - October 1996 000000 Introduction 000001 From the Author 000002 Copyright Information 000003 What This FAQ Lacks 010000 History 010001 Sequential Circuits Incorporated 010002 Sequential Instruments in Commercial Releases 020000 Multi-Trak Description 020100 Overview 020101 Keyboard 020102 Voices 020103 Sequencer 020104 Memory 020105 Interfacing 020106 Features 020107 Dimensions 020108 Original List Price 020200 Top Panel 020201 Wheels 020202 Track 020203 Sequencer 020204 Arpeggiate 020205 Speed 020206 Control 020207 Program / Parameters 020208 MIDI 020209 Cassette 020210 Chorus 020211 Master Tune 020212 Master Volume 020300 Rear Panel 020301 Mix 020302 Audio Outputs 020303 MIDI 020304 Cassette 020305 Footswitch 020306 Power 030000 Basic Instructions 030100 Set Up 030200 Basic Operations 030201 Select Programs 030202 Use the Wheels 030203 Chorus 030204 Manual Tuning 030300 Sequence 030400 Sequence Playback 030401 Start Playback 030402 Stop Playback 030403 Display a Track's Current Program Number 030404 Adjust Playback Speed 030405 Use the Footswitch to Pause and Continue Playback 030406 Chained Playback 030407 Adjust Track Volume 030408 Change a Track's Program 030500 Sequence Record 030501 Before Recording, Check Available Space 030502 Select the Sequence to be Recorded 030503 Select the Program for your Basic Track or Tracks 030504 Record New Sequence (and Erase Current Sequence) 030505 Metronome 030506 Adjust Speed 030507 Record Basic Track 030508 Overdub Tracks (Sequencer Already in Overdub) 030509 Overdub Tracks (Sequencer Stopped) 030510 Truncate a Sequence 030511 Erase a Track from a Sequence 030512 Erase Individual Notes 030513 Append One Sequence to Another 030514 Set Autocorrect Resolution 030515 Synchronize with a Drum Machine 030516 Sync-to-Tape 030600 Arpeggiate 030700 Up / Down 030701 Latch 030702 Transpose 030703 Stop 030800 Assign 030801 Latch 030802 Transpose 030803 Stop 030900 Stacks / Splits 030901 Play a Stack or Split 030902 Create or Modify a Stack 030903 Create or Modify a Split 030904 Display the Program Assigned to a Track 030905 Change the Program for a Track 030906 Adjust Track Volume 030907 Delete a Track from the Stack 030908 Add a Track to the Stack 031000 Programming the Synthesizer 031001 Editing a Program 031002 Restoring a Program 031003 Recording a Program 031004 Using the Basic Patch 031100 Cassette Interface 031101 Saving Programs or Sequences to Tape 031102 To Verify, First Rewind to Start of Tape 031103 Loading Programs or Sequences from Tape 031200 MIDI 031201 Enable MIDI Clock Input 031202 Disable MIDI Clock Input 031203 To Change the Basic MIDI Channel 031204 To Display the Current Basic MIDI Channel 031205 To Display the Current MIDI Mode 031206 To Change the Current MIDI Mode 031207 To Turn MIDI Off 031208 To Turn MIDI On 031209 Select Double Mode 031210 Enable / Disable External Program Changes 031211 Enable / Disable External Wheel Changes 031212 Enable / Disable External Keyboard Pressure 031213 Dump All Programs and Stacks 031214 Dump Current Program 031215 Dump All Sequences 031216 Dump Current Sequence 031217 Local On / Off 040000 Troubleshooting 040001 Abnormal 'Power-On' Indications 040002 Low Battery Indications 040003 No LEDs 040004 Audio 040005 Memory 040006 Control 040007 Sequencer 040008 Initializing the Pitch Wheel 040009 Revisions 040010 Hum or Noise 040011 Keyboard Doesn't Work Unless... 040012 Shorting 040013 DAC Trim 040014 Stack/Split Problems 040015 Mechanical Disassembly 040016 Mechanical Reassembly 040017 Board Extender 040018 Replacing the Battery 050000 Tips and Tricks 050001 Layering Sounds while Sequencing 050002 Use Mix and Individual Outs 050003 Approximating Sending and Receiving on Two MIDI Channels 050100 Converting Programs Between the Six-Trak and the Multi-Trak 050101 Multi-Trak to Six-Trak 050102 Six-Trak to Multi-Trak 060000 Parts List / Function Description 060100 System / Chasis Parts List 060101 Passive Components 060102 Non-Designated Parts 060200 PCB 1 Parts List 060201 Assembled 060202 Integrated Circuits 060203 Passive Components 060204 Non-Designated Parts 060300 PCB 2 Parts List 060301 Assembled 060302 Integrated Circuits 060303 Passive Components 060304 Non-Designated Parts 060400 PCB 3 Parts List 060401 Integreated Circuits 060402 Passive Components 070000 Resources and References 070001 Hardware Support 070002 This FAQ 070003 Other FAQs and On-Line Resources 070100 Bibliography 070101 Sequential 070102 Other 000000 INTRODUCTION 000001 FROM THE AUTHOR - I have been using a Multi-Trak since 1985. I hope this information is of use to fellow users, service technicians and analog synthesizer players everywhere. - Please archive this text: the author is no longer supporting it. If you are interested in continuing this effort, please do! - Edition 2.1 of this FAQ included a more extensive history and product listing of Sequential Circuits. - Edition 2.2 of this FAQ merely announced this was the final version. - This FAQ has received kind support and amplification from... Jeffrey Bergman (jeffreyb@pipeline.com) Mark Hosler of Negativland, Six-Trak and Model 524 owner Scott Peer (speer@ensoniq.com), Sequential employee 86-87 David Chandler (solenoid@europa.com) 000002 COPYRIGHT INFORMATION - Neither the editor nor contributors to this document make any claim toward ownership of the information found herein. - To the degree that this document is in compliance with any and all copyright laws applicable to the information found herein, it is declared part of the public domain and may be distributed in any form. - Neither the editor nor contributors to this document are to be held responsible for the use of any information found in this document. 000003 WHAT THIS FAQ LACKS - More on program creation and some sample patches. - Schematics to go with the parts list. - MIDI system exclusive data. 010000 HISTORY 010001 SEQUENTIAL CIRCUITS INCORPORATED 1978 Prophet 5: 1st programable, self-tuning, polyphonic synthesizer. - Footswitch (Alternate Release, Sustain, Start/Stop) - Operation Manual - Technical Service Manual - Rev 3 120 Factory Programs Data Cassette - Rev 3 80 Alternative Programs Data Cassette - Rev 3.2 120 Program Memory Expansion Kit - R-221 Front Panel Potentiometer - M-357 Front Panel Knob - S-041 Front Panel Switch & LED - White & Black Keys - J-Wire Repair & R5 Maintenance Kit - Mod Wheel - R-207 Pitch/Mod Pot - E-017 Fuse Holder - E-018 Red Fuse Cap - Rev 1 & 2 (serial #1300 & lower) I-308 VCA/SSM2020 IC - Rev 1 & 2 (serial #1300 & lower) I-309 VCA/SSM2030 IC - Rev 1 & 2 (serial #1300 & lower) I-310 VCA/SSM2040 IC - Rev 1 & 2 I-311 Envelope Generator SSM2050 IC - Rev 1 & 2 (serial #1300 & lower) Operating Software ROMs - Rev 3 (serial #1301 & higher) I-319 Env. Gen. CEM3310 - Rev 3 (serial #1301 & higher) I-320 VCF/CEM3320 - Rev 3 (serial #1301 & higher) I-321 VCO/CEM3340 - Rev 3 (serial #1301 & higher) I-322 VCA/CEM3280 - Rev 3 (serial #1301 & higher) I-502 DAC 71 - Rev 3 (serial #1301 & higher) I-035 USART - Rev 3 (serial #1301 & higher) I-330 PC900 Opto-Isolator - Rev 3 (serial #1301 & higher) V 10-5 MIDI Operating Software - Rev 3 (serial #1301 & higher) Service Diagnostics IC 1980 Prophet 10 - Operation manual - Technical Service Manual 1980? Poly-Sequencer: cassette-based sequencer. 1981 Prophet Pro-1: monophonic, programable, 40 note sequencer. - Operation Manual - Technical Sevice Manual - I-039 ROM/CPU - S-048 Power Switch - S-052 Rotary Switch - J-048 Audio Jack - White & Black Keys - Factory Program Data Cassette 1984 MAX synthesizer - E-167 AC Power Supply - CM620 Operation Manual - TM620 Technical Service Manual - MG620 MIDI Guide - Factory Program Data Cassette - Version 5 Software 1982 Prophet 600: the first MIDI instrument. - Operating Software Version-8 ROM - Operation Manual - Technical Service Manual - Service Diagnostics IC - I-331 Filter/CEM3372 IC - I-327 Dual VCA/CEM3360 IC - I-506 DAC700 IC - R-234 Front Panel Pot - 2 or 3 Way Front Panel Switches - White & Black Keys - Factory Program Data Cassette - Version 0.8 Software 1983 Prophet T-8: 76 note weighted action keyboard, polyphonic aftertouch, 600 note sequencer, splits. - Operation Manual - Technical Serive Manual - T-014 Optical Sensor - L-007 Optical Emitter - Hammer & Spring - I-503 Crystal - I-055 Main CPU - I-047 Z-8002 CPU - Wooden Keys - Diagnostics IC - Version 3.8 Software - Factory Program Data Cassette 1983 Six-Trak and Drum-Tracks - Six-Trak CM610 Operation Manual - Six-Trak TM610 Technical Service Manual - Six-Trak Verion 11 Software - Six-Trak Factory Program Data Cassette - Drumtraks CM400 Operation Manual - Drumtraks TM400 Technical Service Manual - Drumtraks MG400 MIDI Guide - Drumtraks Factory Program Data Cassette - Drumtraks Version 0.4 Software - Drumtraks Version 0.5 Software 1983 Commodore 64 interface 1984? SCI 524 Model 500: rack mount digital delay 1985 Multi-Trak and Tom - Multi-Trak Version 2.2 Software - Multi-Trak Operation Manual - Multi-Trak Technical Service Manual - Multi-Trak Factory Program Data Cassette - Tom Operation Manual - Tom TM420 Technical Service Manual - Tom EXP-871 Memory Expansion - Tom Factory Program Data Cassette - Tom Version 6 Software - Tom I-607 Wonder Chip Custom IC - Tom S-069 Drum Pad Switch - Tom Operating System Version 1.6 ROM - Tom Version 6 Software 1985 Split-Eight - Operation Manual - Technical Service Manual - Factory Program Data Cassette 1986 Prophet VS, Prophet VS rack - Operation Manual - Technical Service Manual - Factory Program Data Cassette - E-198 Audio Relay - J-090 Audio Output Jack - I-077 Main CPU - I-356 Sample & Hold CEM5530 IC - I-361 Signal Processor CEM3389 IC - L-017 LCD Backlight Inverter - L-022 16x2 Liquid Crystal Display - R-248 Data Slider - R-248 Data Knob - S-102 Front Panel Switch with LED - Version 1.2 Software - Rom Cartridge 1 Original 100 Factory Sounds - Rom Cartridge 2 'Gig' Style Factory Sounds - Rom Cartridge 3 Additional 'Gig' Style Sounds - Rom Cartridge 4 Best of Roms 1, 2 & 3 - Rom Cartridge 5 'Spacey' & 'Gig' Sounds - Rom Cartridge 6 'Gig' Sounds from Europe - Opcode Galaxy Librarian VS Data Disk Rom 1-4 - Opcode Galaxy Librarian VS Data Disk Rom 1-5 - Ram Cartridge 1986 Prophet 2000 and 2002 (rack): sampling keyboard. - CM2000 Operation Manual - TM2000 Technical Service Manual - P2000 Service Disgnostics Disk - E-179 Transformer - I-076 Sample RAM - I-074 Floppy Disk Controller - I-351 VCA/VCF CEM3379 IC - I-624 Custom Voice Controller IC - S-096 Line/Mic Switch - R-235 Front Panel Potentiometer - R-249 Sample Input Pot - M-396 Front Panel Knob - M-510 Pitch Wheel Return Spring - DSD-200 Disk Drive - Version 3.0 Software 1987 Studio 440 Drum Machine / Sequencer: sampling instrument. - CM440 Operation Manual - TM440 Technical Service Manual - DP440 Drum Pad Replacements - E-211 Switching Power Supply - E-230 Disk Drive - Version 2.1 Final SCI Op Software - MW440-1 Top Panel Housing - SCSI HD Software 1987 Prophet 2002 Plus 1987 Prophet 3000 Stereo Sampler 1987 Sequential closes shop. Yamaha buys intellectual property and sells parts to Wine Country. ???? Yamaha sells intellectual property to Korg (of whom they own 40%). Ideas go into R&D and show up after a fashion in the Korg Wavestation. 010002 SEQUENTIAL INSTRUMENTS IN COMMERCIAL RELEASES - The list of Prophet users is extensive. Here are some commercial releases that include other Sequential instruments... - The song 'Umbrella' by Severed Heads on the Nettwerk CD 'City Slab Horror' is made with either a Six-Trak or a Multi-Trak or both. Most of the sounds are factory patches. - The 'suffer suffer suffer' loop on 'Escape from Noise' by Negativland (on the Seeland label) is made with the Sequential Digital Delay. 020000 MULTI-TRAK DESCRIPTION 020100 OVERVIEW 020101 KEYBOARD - Five octaves, C to C - Velocity sensitive. Velocity can drive LFO amount, filter envelope amount, and / or amplitude envelope amount. - Split and stack modes with up to six seperate programs layerd onto one keystroke. 020102 VOICES - Six. One oscillator, LFO, lowpass filter, three ADRSs per voice. 020103 SEQUENCER - Four seperate polyphonic sequences. - Each voice in a sequence can have its own program. - Autocorrect. - Up to six monophonic tracks within each sequence. - Overdubbing allows new notes or erased notes for any track. 020104 MEMORY - 99 programs (patches). - 1,600 event sequencer. - 10 split / stack settings. 020105 INTERFACING - MIDI in and out. - Data cassette in and out. - Sync pulse in and out. - Footswitch in. - Seperate audio out for each voice. - Stereo mix outs. 020106 FEATURES - Built-in stereo chorus effect. 020107 DIMENSIONS - 35" x 12" x 2.5" - 20 lbs. 020108 ORIGINAL LIST PRICE - $1,499.00 020200 TOP PANEL - From left to right on top... 020201 WHEELS - Pitch - Mod 020202 TRACK - Six track buttons. - Stack button. - Track volume knob. 020203 SEQUENCER - Seq. button, cycles through sequences A, B, C, D. - Start / Stop button. - Autocorrect button. - Metronome button. - Append To button. - Record button. 020204 ARPEGGIATE - Up / Down button. - Assign button. 020205 SPEED - Speed knob. 020206 CONTROL - Parameter Valu knob. - Value / Program display. - Program record button. - Parameter edit button. 020207 PROGRAM / PARAMETERS - Parameter Group A, B, C, D buttons form four rows. - Program / Parameter 0 - 9 buttons form ten columns. A0 Osc. Frequency Course Adjust by 00-12-24-36-48 A1 Osc. Frequency Fine Fine tuning, default to 0 A2 Osc. Frequency LFO Mod On or Off A3 Osc. Waveshape Sawtooth On or Off A4 Osc. Waveshape Triangle On of Off A5 Osc. Waveshape Square On or Off A6 Modifyers Pulse Width 32=sq wave if pulse is on A7 Modifyers PW Mod On or Off A8 Modifyers Glide Portamento A9 Modifyers Noise Mix Noise B0 LFO Frequency 1/4 to 20 Hz B1 LFO Amount Modulation depth B2 LFO Triangle On or Off B2 LFO Square On or Off B4 Oscillator Envelope Envelope Amount Depth of oscillator B5 Oscillator Envelope Invert On or Off B6 Oscillator Envelope Attack Oscillator attack B7 Oscillator Envelope Decay Oscillator decay B8 Oscillator Envelope Sustain Oscillator sustain B9 Oscillator Envelope Release Oscillator release C0 Filter Cutoff Like tone control; decimal=100 C1 Filter Resonance Filter resonance C2 Filter LFO Mod On or Off C3 Filter Osc. Mod Frequency mod C4 Filter Envelope Envelope Amount Depth of filter C5 Filter Envelope Invert On or Off C6 Filter Envelope Attack Filter attack C7 Filter Envelope Decay Filter delay C8 Filter Envelope Sustain Filter sustain C9 Filter Envelope Release Filter release D0 Keyboard Tracking Off, Half or Full D1 Velocity Sensitivity Amp Peak Harder equals louder D2 Velocity Sensitivity Filter Peak Harder equals weirder D3 Velocity Sensitivity LFO Amt Harder equals cooler D4 Unison The Sequential sound: this is it D5 Amplifier Envelope Voice Volume Voice volume D6 Amplifier Envelope Attack Voice attack D7 Amplifier Envelope Decay Voice decay D8 Amplifier Envelope Sustain Voice sustain D9 Amplifier Envelope Release Voice release 020208 MIDI - MIDI Channel button. - MIDI Mode button. 020209 CASSETTE - To Cassette button. - From Cassette button. 020210 CHORUS - On / Off button. - Depth knob. - Rate knob. 020211 MASTER TUNE - Master Tune knob. 020212 MASTER VOLUME - Master Volume knob. 020300 REAR PANEL - From left to right on the back... 020301 MIX - Mix A output - Mix B output 020302 AUDIO OUTPUTS - Tracks 1 - 6 outputs 020303 MIDI - MIDI Out - MIDI In 020304 CASSETTE - To Tape - From Tape 020305 FOOTSWITCH - Footswitch 020306 POWER - On / Off switch - 15 VAC 1.25A power supply 030000 BASIC INSTRUCTIONS 030200 BASIC OPERATION 030201 SELECT PROGRAMS - If Parameter Edit is on, switch if off. - When Parameter Edit is off, pressing any two digits of the Program / Parameter keypad selects a new program. - If the sequencer and arpeggiator are off, pressing the footswitch selects the next higher program number within the current group of ten. 030202 USE THE WHEELS - The Pitch wheel is normally left in its center-detent position. - When not in use, the Mod wheel is left "down" and no modulation occurs. When the wheel is advanced fully "up," modulation is maximum. 030203 CHORUS - The programmed Chorus On/Off switch must be on. - Adjust the Chorus Depth and Rate controls. They are not programmed, but always produce the effect indicated by their front panel settings. 030204 MANUAL TUNING - Hold Program Record and press Program / Parameter 6. - While tuning is in process, the display counts from 1 to 6. When tuning is concluded, if necessary, slightly readjust Master Tune. 030300 SEQUENCE 030400 SEQUENCE PLAYBACK 030401 START PLAYBACK - The arpeggiator and stack mode must be off. - To select desired sequence, A - D, repeatedly press Seq. - Press Start. 030402 STOP PLAYBACK - Press Stop. 030403 DISPLAY A TRACK'S CURRENT PROGRAM NUMBER - Press the desired Track switch. - If a track is empty, the display will show horizontal bars (--). 030404 ADJUST PLAYBACK SPEED - Use the Speed knob. - Do not turn Speed all the way counterclockwise, or external clock will be enabled, causing the sequence to stop. 030405 USE THE FOOTSWITCH TO PAUSE AND CONTINUE PLAYBACK - Start playing normally, by pressing a sequence, then pressing Start. - Stop (pause) the sequence by pressing the footswitch. - To continue the sequence, press the footswitch again. 030406 CHAINED PLAYBACK - While a sequence is playing, use Seq to select another. It blinks. - The new sequence start playing at the end of this one. - The speed of all chained sequences is determined by the speed of the first. - If the new sequence is empty, the sequencer stops. 030407 ADJUST TRACK VOLUME - Hold desired Track switch while adjusting Track Volume knob. - The track always plays at the volume to which it was last adjusted. 030408 CHANGE A TRACK'S PROGRAM - Sequence must be playing, or paused. - Hold Track(s), select new program. 030500 SEQUENCE RECORD 030501 BEFORE RECORDING, CHECK AVAILABLE SPACE - Maximum storage is 1600 notes for all four sequences. - When memory is full, the display shows flashing horizontal bars (--), and record mode switches off automatically. - To stop the LEDs from blinking (?), press Stop. - Create more space by erasing undesired tracks or by erasing another sequence entirely. 030502 SELECT THE SEQUENCE TO BE RECORDED - Use Seq. 030503 SELECT THE PROGRAM FOR YOUR BASIC TRACK OR TRACKS - Use Program / Parameter keypad. 030504 RECORD NEW SEQUENCE (AND ERASE CURRENT SEQUENCE) - Hold Record and press Start. 030505 METRONOME - To turn off (or on), press Metronome. 030506 ADJUST SPEED - Use the Speed knob. - Do not turn it all the way counterclockwise or nothing will be recorded. - The sequence will play back at whatever tempo the Speed knob was set to the last time the sequence was put into play or record mode. There is no numerical display for tempo. 030507 RECORD BASIC TRACK - Start playing (or, to start the sequence with a rest, press the footswitch). - Each track can only play one note at a time. If you need more than one voice, switch on additional Track switches. - Just before the desired ending, either 1) Press Record or the footswitch. The sequence plays back, looping, in Overdub mode. The track or tracks just recorded remain in record until switched off. or, 2) Press Stop. The tracks do not play back. If desired, press Start to start playback. - The ending of the sequence is autocorrected to the following quarter note (except in Hi-Res autocorrect mode). 030508 OVERDUB TRACKS (SEQUENCER ALREADY IN OVERDUB) - Switch off the track or tracks already recorded. - Adjust playback speed. - Select program for recording. - Switch on overdub tracks. - Play. Anything played is recorded in the blinking tracks. - When done, repeat until all desired tracks have been recorded. - The entire sequence can be built up, track by track, without the sequence ever stopping. - The sequence can be stopped with the footswitch. 030509 OVERDUB TRACKS (SEQUENCER STOPPED) - Adjust playback speed to desired rate. - Adjust volume of track(s) which are playing back. - Select program desired. - Stop sequence. - Switch Record on. - Press Start. - Anything played on the keyboard is recorded in the tracks which have blinking LEDs. From this point, follow procedure above (already in Overdub). 030510 TRUNCATE A SEQUENCE - Sequencer must be in Overdub mode. - Hold Record and press Stop within one quarter note before the desired ending. 030511 ERASE A TRACK FROM A SEQUENCE - The sequence must be stopped. - Hold Record and press the Track switch. 030512 ERASE INDIVIDUAL NOTES - Sequencer must be in Overdub mode. - Hold Record, and either 1) Press and hold a Track. While held, all notes occurring in this track are erased. or, 2) Press and hold a key. While held, all occurrences of this note are erased from all recording (blinking) tracks. 030513 APPEND ONE SEQUENCE TO ANOTHER - Sequencer must be stopped. - Select sequence to be appended. - Press Append To. It blinks. - Select the sequence you want to append it to. - If you want to abort the procedure, press Append To again. - Press Record. - Appended sequences preserve program and volume changes. 030514 SET AUTOCORRECT RESOLUTION - Press and hold Autocorrect, - Adjust the Parameter Value knob. 8 Eighth Note correction 16 Sixteenth Note correction 8. Eighth Note Triplet correction 16. Sixteenth Note Triplet correction 96 Hi-Res high resolution correction (autocorrect off) - Sequence endings are always autocorrected to the next quarter note, unless autocorrect resolution is set to Hi-Res 030515 SYNCHRONIZE WITH A DRUM MACHINE - Connect the drum box's Clock Out to From Tape. - The Multi-Trak expects 24 pulses-per-quarter note. - Or, connect To Tape to the drum box's Clock In. The Multi-Trak puts out 24 pulses-per-quarter note. - Turn the sequencer Speed knob all the way counterclockwise. - Place the sequencer in RECORD BASIC TRACK mode. - Start the drum box. - As the drum box pattern loops, start playing (or press the footswitch) at the beginning of a loop. - At the end, press Record (or footswitch) or Stop to record the end of the sequence loop. 030516 SYNC-TO-TAPE - Connect To Tape to the recorder's Line In. - Connect From Tape to the recorder's Line Out. - Place the tape recorder in record and play the sequence, while recording the sync track. - When done recording, turn the Speed knob all the way counterclockwise. - Play the first sequence and record it on tape while the sync track plays back, synchronizing the sequencer. Start the sequencer slightly before the beginning of the sync track. - Other sequences can now be laid down on other tracks, using the sync track. - To record a new sequence on other tracks already on tape, use the drum box procedure (above), substituting the sync track for the drum box. - To record a new sequence that starts at the beginning of a taped sequence 1) Set up RECORD BASIC TRACK, external clock. 2) Start tape. Before the taped sequence and sync track actually start, press and hold the starting keys (or footswitch, if the new sequence is to start with a rest) until the taped sequence begins. Then continue playing as usual. 030600 ARPEGGIATE - Note: Record in the following instructions refers to Sequencer Record. - Switch off Sequencer, Stacks and Parameter Edit. 030700 UP/DOWN - Switch Up/Down on, hold keys. - Adjust Speed as desired. - The Pitch and Mod wheels do not affect the arpeggiated voice, but do affect voices 1 - 5. 030701 LATCH - With Up / Down on, hold keys and press Record or footswitch. - While the arpeggiator is latched, play along with up to five more keys, which will not be arpeggiated or latched. The wheels will operate on those live voices, and another program can be selected for them. This can be a unison program. 030702 TRANSPOSE - While latched, hold Record or the footswitch and press a key. - The distance of the key you hit from C2 (the C to the left center of they keyboard) determines the interval of transposition. 030703 STOP - Switch Up / Down off. 030800 ASSIGN - Switch Assign on, press keys in the order you wish them to arpeggiate, and hold them. 030801 LATCH - Press the footswitch or Record while you hold down keys. 030802 TRANSPOSE - While latched, hold Record or the footswitch and press a key. 030803 STOP - Switch Assign off. 030900 STACKS / SPLITS 030901 PLAY A STACK OR SPLIT - If any are on, turn off Sequencer, Arpeggiate, or Parameter Edit. - Switch Stacks on. The Program / Parameter LEDs indicate the Stack / Split preset number. If a Stack, the display also shows the preset number. If a Split, the display shows "SP." - To change presets, press one of the Program / Parameter switches. - Play the keyboard. - The number of Track LEDs lit when a key is played indicates the number used for that stack. If only two or three tracks are used, the Multi-Trak is three- or two-voice polyphonic. If four or more are used, the Multi-Trak is monophonic. 030902 CREATE OR MODIFY A STACK - Select the Stack / Split as above. - Hold Track 1 and press any key. - Select programs and adjust volumes as described below. 030903 CREATE OR MODIFY A SPLIT - Select the Stack / Split as above. - Hold the first Track switch for the right side of the keyboard, and press the first key on the right side of the desired split. - If all programs selected for one side of the split are the same, that side will be polyphonic. Note: the volumes of all tracks of that side must be manually set to be equal. 030904 DISPLAY THE PROGRAM ASSIGNED TO A TRACK - Press the desired Track switch. The program number for that track will be displayed. - If "--" is shown, the voice has been deleted. 030905 CHANGE THE PROGRAM FOR A TRACK - Press and hold desired Track. - Select desired program. - Adjust track volume to add or balance track. 030906 ADJUST TRACK VOLUME - Hold desired Track switch. - Adjust Track Volume as desired. 030907 DELETE A TRACK FROM THE STACK - Adjust the track's Track Volume to 0. 030908 ADD A TRACK TO THE STACK - Raise the track's Track Volume above 0. - Change program if desired. 031000 PROGRAMMING THE SYNTHESIZER 031001 EDITING A PROGRAM - If any are on, turn off Sequencer, Arpeggiate, or Stacks. - Switch Parameter Edit on. - Press the Parameter Group switch repeatedly to select a row. - Select the column with Program / Parameter switch. - To edit the parameter value, turn the Parameter Value knob. 031002 RESTORING A PROGRAM - Switch Parameter Edit off. - Re-enter the program edit. 031003 RECORDING A PROGRAM - Switch Program Edit on. - Select the first digit of the program number being recorded using, the Program / Parameter keypad. - Press the second digit, and the program is recorded in that location. 031004 USING THE BASIC PATCH - A function is available which clears all parameters to 0, except for the minimum needed to produce a basic sound. To switch to this basic patch hold Program Record and press Program / Parameter 8. This sets all parameters on that program to 0 except Sawtooth 1 (on) Cutoff 127 Filter Keyboard 2 (full) Amp Sustain 15 Voice Volume 15 031100 CASSETTE INTERFACE 031101 SAVING PROGRAMS OR SEQUENCES TO TAPE - To save sequences, press Sequencer Record, or to save programs, Program Record. - Place recorder into record mode and wait a moment for the tape leader to pass. - Press the To Tape switch. The control panel goes dark, except Value / Program displays a "CS" for Cassette Save. - Check that the record level is at 0 db. - When the Value / Program display shows "CH" (check), stop the recorder. - Now the recording should be verified. If this is not desired, press Parameter Group to return to normal operation. 031102 TO VERIFY, FIRST REWIND TO START OF TAPE - Check for a playback level of about 75% of full volume. - Place recorder into play mode and wait a few seconds for the sync tone. - When a good steady sync tone appears, press the From Tape switch. The Value / Program display continues to show a "CH." - If verification is positive, the Multi-Trak returns to normal operation (Value / Program displays the last-selected program). - Turn off the tape recorder. - If instead an "ER" (error) appears in the Value / Parameter display, a tape error has occurred. Press From Tape to try verification again. - If verification fails a second time return to normal operation by pressing Parameter Group. - Try recording again using different record and playback levels or a new cassette. 031103 LOADING PROGRAMS OR SEQUENCES FROM TAPE - Check for a playback level of about 75% of full volume. - To load sequences, press Sequencer Record, or to load programs, Program Record. - Place recorder into play mode and wait a few seconds for the sync tone. - When a good steady sync tone appears, press the From Tape switch. The Value / Parameter display shows a "CL" (cassette load). When tape loading is complete, the Multi-Trak returns to normal operation. Value / Parameter displays the last-selected program. - Turn off the tape recorder. - If instead an "ER" appears in the Value / Parameter display, a tape error has occurred. Return to normal operation by pressing Parameter Group and try loading again. 031200 MIDI 031201 ENABLE MIDI CLOCK INPUT - Turn Speed knob all the way counterclockwise. Allows the Multi-Trak sequencer to be 'synced' to MIDI-equipped drum machines. Disabled on power-up 031202 DISABLE MIDI CLOCK INPUT - Turn Speed knob away from the stop. Enables the Multi-Trak's internal clock to control the record and playback speed of the recorder. 031203 TO CHANGE THE BASIC MIDI CHANNEL - Hold MIDI Channel and turn Parameter Value until the desired channel (1 - 6) appears in the Value / Program display. MIDI data is sent over the selected channel. If in Mode 3 or Mode 4, this also determines the channel through which MIDI data is accepted. 031204 TO DISPLAY THE CURRENT BASIC MIDI CHANNEL - Hold MIDI Channel. Set to channel 3 at the factory. 031205 TO DISPLAY THE CURRENT MIDI MODE - Hold MIDI Mode. 031206 TO CHANGE THE CURRENT MIDI MODE - Hold MIDI Mode and turn Parameter Value until the desired mode (0, 1, 3 or 4) appears in the Value / Parameter display. 031207 TO TURN MIDI OFF - Set mode to 0. 031208 TO TURN MIDI ON - Set mode to 1, 3 or 4. 031209 SELECT DOUBLE MODE - Hold MIDI Channel and press Program / Parameter 7. Selects mode 4, with external wheels and program changes enabled over MIDI. Used when the Multi-Trak is combined with another keyboard. Also commands slave to switch into same condition. 031210 ENABLE / DISABLE EXTERNAL PROGRAM CHANGES - Hold MIDI Channel and press Program / Parameter 5. When enabled, "on" appears in the display. Toggles (switches) the ability for the Multi-Trak's program changes to select and be selected by another instrument via MIDI. 031211 ENABLE / DISABLE EXTERNAL WHEEL CHANGES - Hold MIDI Channel and press Program / Parameter 4. When enabled, "on" appears in the display. Allows the Multi-Trak to be controlled by another instrument's Pitch and Mod wheels over MIDI. 031212 ENABLE / DISABLE EXTERNAL KEYBOARD PRESSURE - Hold MIDI Channel and press Program / Parameter 6. When enabled, "on" appears in the display. If enabled, MIDI-equipped pressure-sensitive keyboards control the Multi-Trak's modulation (as Mod wheel). 031213 DUMP ALL PROGRAMS AND STACKS - Hold MIDI Channel and press Program / Parameter 0. 031214 DUMP CURRENT PROGRAM - Hold MIDI Channel and press Program / Parameter 1. 031215 DUMP ALL SEQUENCES - Hold MIDI Channel and press Program / Parameter 2. 031216 DUMP CURRENT SEQUENCE - Hold MIDI Channel and press Program / Parameter 3. 031217 LOCAL ON / OFF - Hold MIDI Channel and press Program / Parameter 9. When "on" appears in the display, the Multi-Trak is in Local On, or normal playing mode. Local off disconnects the Multi-Trak's keyboard and front panel controls from the synthesizer voices. All control is done via MIDI. The keyboard information still goes out over MIDI. 040000 TROUBLE SHOOTING 040001 ABNORMAL 'POWER-ON' INDICATIONS - When power is first switched on, the Value / Parameter display should read 00 and one of the Seq LEDs should light. Chorus On / Off may also light. If instead the instrument goes through a tune routine, counting from 1 to 6 in the Value / Program display, you have a problem. 040002 LOW BATTERY INDICATIONS - When the batteries are low, the instrument will give abnormal 'power-on' indications, replace all programs with a low moan or silent patch, and impossible parameter settings become possible (a parameter that is only supposed to go to 30 will go to 75). 040003 NO LEDS - Check the power source. - Check that the Multi-Trak is turned on. - There is no fuse to check. 040004 AUDIO - Check that Master Volume is turned up. - Check that track volumes are not set too low. - Try other programs or the Basic Patch (hold Program Record and 8). - Check your amplifier and output cable. 040005 MEMORY - If the display counts from 1 to 6 when power is switched on, there may be a memory problem. Check your sequences and a few programs to see if they are as recorded. 040006 CONTROL - If the keyboard or the controls "lock up," check that you are not making an operational error. - If necessary, reset the computer by switching power off, then, after a few moments, back on. 040007 SEQUENCER - If the sequencer does not work, check that the Speed knob is not all the way counterclockwise. - If sequences play back with erroneous note timing, check the Autocorrect setting. - If sequences have been lost and the sequencer is not functioning ("locked up"), it can be reset. Be sure you are not making an operational error, because resetting will erase anything you have recorded under both sequences. To reset the sequencer, press both Record switches simultaneously and release, then press both Record switches again. 040008 INITIALIZING THE PITCH WHEEL - If recorded sequences play back in a different tuning than they were recorded in, or voices go out of tune with each other when the pitch wheel is moved, the pitch wheel may need initializing. Hold Program Record and press 3, then move the wheel and return it to center. 040009 REVISIONS - The instrument was produced in two basic versions. The first, rev B, has several modifications to the PC boards to improve performance. Early rev B's may not have all the mods installed. Rev C, in addition to incorporating these mods onto the boards, had a redesigned non-volatile memory chip. To determine which rev of the instrument you are working on, look at the circuit boards. Each board has a rev letter clearly marked on the component side silkscreen. Rev A boards are electrically the same as rev B, so any mix of rev A and B boards can be used in a rev B instrument. 040010 HUM OR NOISE - Some early instruments (serial number 684 and lower) had excessive hum and noise. The procedure to address this problem may be included in a future edition of this FAQ. 040011 KEYBOARD DOESN'T WORK UNLESS... - Occasionally, when power is first turned on, the keyboard does not work until a certain key is hit or power is turned off and on again (serial number 100 and lower). The procedure to address this problem may be included in a future edition of this FAQ. 040012 SHORTING - Various problems can be caused by pins shorting to traces. The procedure to address this problem may be included in a future edition of this FAQ. 040013 DAC TRIM - Hold Program Record and press Program / Parameter 7. This sets the DAC output to 0v to allow you to measure the DAC offset. This also locks-up the computer: reset by switching power off then on again. 040014 STACK/SPLIT PROBLEMS - Exceptionally early models, when playing a polyphonic split with two different programs on the right side of the split point, would load the last program used into track 6 irregardless of what program had been assigned to that track. 040015 MECHANICAL DISASSEMBLY - Turn off power and remove power chord from the rear panel connector. - Of the five screws on each side panel, remove the top two and loosen the remaining three. - Remove four screws on the rear, holding the top two panel to the bottom panel. - Remove the top panel from the chassis. There should be enough keyboard cable so that the panel may be propped up in a working position without disconnecting the cable. Be careful not to scratch the panel. Place it on a protective pad. - Power may be reapplied and the instrument tested in this position. - To gain access to the computer board, first unplug the power supply cable, then remove the seven screws holding it in place. Gently pull it out, disengaging the connectors holding it to the chassis. - Boards one and two must be removed together. First, pull the knobs off from the top and remove the Pitch and Mod wheel cable. Then remove the fourteen screws holding it together. 040016 MECHANICAL REASSEMBLY - Reverse order of disassembly. - When installing the computer board to the top panel, be careful to put the threaded standoffs in their correct holes (there are two different sizes). - Do not over-tighten standoffs. - Line up the connectors carefully before plugging them in. Be sure to install lockwashers between all standoffs and the computer board. - Test the instrument to make sure the keyboard and wheels have been plugged in. Test the Master Volume and Master Tune controls. If they do not work, the connectors may not have been lined up. - Tighten all screws. 040017 BOARD EXTENDER - Ordinarily, troubleshooting of boards one and two can be done with the computer board removed. However, in a few cases, the computer board must be installed and operating while probing test points on board two. For this purpose, a board extender kit (SCI part # PC-0615-BS) was developed, consisting of a board that could be used with ordinary double-row header cables. 040018 REPLACING THE BATTERY - The Multi-Trak was designed to use a 2.9 volt lithium battery. It can use a 3 volt lithium battery with no troubles. - A 3 volt lithium cylinder battery with tabs can be obtained from Digi-Key (1-800-344-4539). - Solder the battery in place with the usual precautions. 050000 TIPS AND TRICKS 500001 LAYERING SOUNDS WHILE SEQUENCING - While the Six-Trak used the same filters as the Prophet 5, the Multi-Trak and Split-Eight used filters from Fatari of Italy. The sounds of the Six-Trak and Multi-Trak are very similar but not identical. - Recording a sequence using a single program in several tracks can sound thin, even when using a program with the Unison parameter set to 1 (on). - Rather than recording several tracks at the same time, record each one individually. This will make the sound much more full. 050002 USE MIX AND INDIVIDUAL OUTS - Tracks are removed from the mix outputs when individual outs are used. Place effects on individual tracks and mix the rest. 050003 APPROXIMATING SENDING AND RECEIVING ON TWO MIDI CHANNELS - Change the Multi-Trak to MIDI Mode 4. - Stack one or both halves of a split, so each side plays monophonically. - A slave instrument will play one or the other half of a split but not both. 050100 CONVERTING PROGRAMS BETWEEN THE SIX-TRAK AND THE MULTI-TRAK - The Six-Trak and the Multi-Trak use almost the same set of parameters to create programs. Programs can easily be converted between the two instruments. Aside from the following two differences, parameters have a direct correlation. - The Six-Trak does not have velocity sensitivity: parameters D1, D2 and D3 have no equivalent in the Six-Trak. - Parameters B6, B7, B9, C6, C7, C9, D6, D7 and D9 are double in the Multi-Trak what they are in the Six-Trak. A B6 setting of 14 on the Multi-Trak is the same as a setting of 7 on on 06 the Six-Trak. 050101 MULTI-TRAK TO SIX-TRAK - Use the following template to convert Multi-Trak programs to Six-Trak programs. A 00 01 03 10 11 12 13 14 02 18 B 15 16 17 17 04 05 06 07 08 09 C 19 20 27 29 21 22 23 24 25 26 D 28 xx xx xx 35 34 30 31 32 33 0 1 2 3 4 5 6 7 8 9 050102 SIX-TRAK TO MULTI-TRAK - Use the following template to convert Six-Trak programs to Multi-Trak programs OSCILLATOR 00 Coarse Frequency A0 01 Fine Frequency A1 02 Glide Rate A8 03 LFO A2 04 Envelope Amount B4 05 Invert B5 06 Attack B6 07 Decay B7 08 Sustain B8 09 Release B9 10 Sawtooth Wave A3 11 Triangle Wave A4 12 Pulse Wave A5 13 Pulse Width A6 14 LFO A7 LFO 15 Frequency B0 16 Programmed Amt B1 17 Tri/Square Wave B2 & B3 FILTER 18 OSC/Noise Mixer A9 19 Cutoff Frequency C0 20 Resonance C1 21 Envelope Amount C4 22 Invert C5 23 Attack C6 24 Decay C7 25 Sustain C8 26 Release C9 27 LFO C2 28 Keyboard D0 29 OSC Tri Mod Amt C3 AMPLIFIER 30 Attack D6 31 Decay D7 32 Sustain D8 33 Release D9 34 Voice Volume D5 35 Unison D4 060000 PARTS LIST / FUNCTION DESCRIPTION - Designator refers to schematics, not included here. 060100 SYSTEM / CHASIS PARTS LIST 060101 PASSIVE COMPONENTS Designator SCI Part # Description PS1 E-170 15VAC 1-1/4A CT WALL MOUNT 110V E-175 15VAC 1-1/4A CT WALL MOUNT-220V R1,R2 R-207 100K LINEAR POTENTIOMETER (wheels) W1 S-090 5 OCTAVE WEIGHTED VELOCITY PANASONIC SK7020 (keyboard) 060102 NON-DESIGNATED PARTS Designator SCI Part # Description 870 615 FACTORY PROGRAM TAPE E-173 9" RIBBON CABLE W/FEMALE .1" RECEPTACLE J-056 5 PIN HOUSING M-016 6-32 x 1/4" PAN HD PHIL MS M-070 6-32 x 1/2" SET SCREW M-090 6-32 HEX NUT M-192 #8 BLACK FLAT WASHER M-199 4-40 x 1/4" BLACK PAN HD PHIL M-357 BLACK KNOB .250 x .156 M-383 #4 STAR WASHER EXT TOOTH M-384 1/8" x 1/8" ALUM RIVET M-397 6-32 x 7/8" PAN HD PHIL M-420 #8 x 5/8" BLACK SHEETMETAL PAN HD PHIL M-438 RED ACETATE WINDOW 1.25" x 1.75" x 10 ml M-475 #8 x 1/4 BLACKPAN HEAD SMS M-481 10-32 x 3/8 BLK PAN HD PHIL M-485 PITCH WHEEL SNAP BUTTON M-497 #6 INTERNAL TOOTH LOCK WASHER M-498 6-32 MALE/FEMALE 5/8" HEX STANDOFF M-505 4-40 x 5/8" THREADED STANDOFF M-506 #8 x 3/8" BLACK SHEETMETAL PAN HD PHIL M-507 M5-5 (METRIC) CHEEZE HEAD SCREW Z-339 HALF CUT MOD WHEEL SUBASSEMBLY MW0000-2 MOD WHEEL BRACKET 1/HT MW0615-1 615 TOP PANEL MW0615-2 615 BOTTOM PANEL PC0615-BS PCB3 TO PCB2 EXTENDER KIT (sevice only) PW0000-1 MOLDED HALF CUT MOD WHEEL PW0620-1 PLASTIC END CAP LEFT PW0620-2 PLASTIC END CAP RIGHT 060200 PCB 1 PARTS LIST 060201 ASSEMBLED Designator SCI Part # Description Z-340 615 1 BOARD 060202 INTEGRATED CIRCUITS Designator SCI Part # Description U101 I-428 780-05 +5V ANALOG REGULATOR U102 I-411 LM7905/79M05 -5V 1A VOLTAGE REGULATOR U103 I-405 78L15 15V REGULATOR 060203 PASSIVE COMPONENTS Designator SCI Part # Description C101 C-075 3300 16V ELECT RADAIL C102 C-074 1000 35V ELECT RADAIL C103-05 C-105 47 35V ELECT RADAIL C106 C-051 2.2 10V 20% TANT RADAIL C108 C-045 .1 50V DECOUPLER MONO RADAIL D101/02 D-001 100V 1AMP 1N4002 D103/04 D-005 1N914 D105-08 D-001 100V 1AMP 1N4002 J101 J-099 5 PIN 240 DEGREE RT ANG PC MINT DIN CONN J102-04 J-100 1/4" MONO PHONE JACK LOW DS101-15 L-001 LARGE RED TI P101 P-069 5 PIN LOCKING R101/02 R-243 10K LINEAR, REV PC R103 R-402 150 OHM 1/4W 5% R104 R-515 301 OHM 1/4W 1% R105 R-517 86.6 OHM 1/4W 1% R107/08 R-008 1K 1/4W 5% S101 S-092 DPDT RT ANGLE PC MOUNT ROCKER SWITCH S102-16 S-089 OMRON KEY SWITCH (used w/cap, below) 060204 NON-DESIGNATED PARTS Designator SCI Part # Description J-084 7 PIN LOCKING HOUSING P-031 POLARIZING PINS S-093 OMRON GRAY SWITCH CAP S-094 OMRON ORANGE SWITCH CAP Z-338 POWER SUPPLY HARNESS PC0615-1 615 1 BOARD Rev B uses a jumper to connect two grounds on board. Rev C has no mods. 060300 PCB 2 PARTS LIST 060301 ASSEMBLED Designator SCI Part # Description Z-341 615 2 BOARD 060302 INTEGRATED CIRCUITS Designator SCI Part # Description U201 I-410 7805 +5V DIGITAL REGULATOR U202 I-275 4099 ADDRESSABLE LATCH SWITCH DRIVER U203 I-216 4503 HEX 3-STATE SWITCH INPUT BUFFER U204 I-253 74HC138 I/O CHIP SELECT DECODER U205-3,-6 I-264 74HC00 QUAD 2-IN NAND METRONOME 1 SHOT U205-8 I-264 74HC00 QUAD 2-IN NAND (not used) U205-11 I-264 74HC00 QUAD 2-IN NAND INTERUPT LOGIC U206-9 I-252 74HC74 DUAL D FLIP-FLOP DIVIDE-BY-TWO U206-6 I-252 74HC74 DUAL D FLIP-FLOP INTERUPT RQ LTCH U207-2 I-249 74HC04 HEX INVERTER U207-4 I-249 74HC04 HEX INVERTER U207-6 I-249 74HC04 HEX INVERTER U207-8 I-249 74HC04 HEX INVERTER U207-10 I-249 74HC04 HEX INVERTER U207-12 I-249 74HC04 HEX INVERTER U208 I-272 4040 COUNTER 1.95 KHZ CLOCK DIVIDER U209/10 I-276 4029 PROGRAM INTERUPT CLOCK U211/12 (see passive components) U213/14 I-227 4042 QUAD LED DRIVER LATCH U215 I-227 4042 QUAD MISC. OUTPUT LATCH U216 I-301 311 PRECISION TAPE COMPARATOR U217 I-235 MC1413(2003) LED MATRIX SINK U218 I-228 4174 HEX LED SINK LATCH U219 I-066 68A50 ASYNCH. COMM. INTERFACE ADAPTOR U220 I-602 SCI COMBO CHIP U221 I-058 Z-80A CPU U222 Z-1064 MULTI-TRAK SOFTWARE 2-1 FIRMWARE U223-27 I-043 6116 LP-4 NON-VOLATILE RAM U228-29 3-9 I-216 4503 HEX 3-STATE DATA BUSS BUFFERS U228/29 11,13 I-216 4503 HEX 3-STATE MISC. INPUT BUFFERS U230 I-612 MASKED 68B01 KEYBOARD SCANNER U231 I-330 PC-900 OPTOISOLATOR U232 I-253 74HC138 MEMORY ADDRESS DECODER U223-3 I-251 74HC32 NV CHIP SELECT GATE U223-6 I-251 74HC32 NV CHIP SELECT GATE U233-8 I-251 74HC32 -IOREQ GATE U233-11 I-251 74HC32 NV CHIP SELECT GATE U234-3,11 I-251 74HC32 OR GATE (not used) U234-6 I-251 74HC32 NV CHIP SELECT GATE U234-8 I-251 74HC32 NV CHIP SELECT GATE U235-1 I-248 74HC02 INTERRUPT LOGIC U235-4,-10,-13 I-248 74HC02 POWER DETECT LOGIC U236 I-207 4002 OCTAL COUNTER KYBOARD COLUMN ENABLE 060303 PASSIVE COMPONENTS Designator SCI Part # Description BT201 E-040 2.9 V LITHIUM BATTERY C201 C-045 .1 50V DECOUPLER MONO RADIAL C202 C-020 1.0 25V 20% TANT RADIAL C204/05 C-045 .1 50V DECOUPLER MONO RADIAL C206/07 C-065 20PF 10% 50V CERAMID RADIAL C209 C-045 .1 50V DECOUPLER MONO RADIAL C210 C-014 .02 50V 10% DISC RADIAL C211 C-004 100P 50V DECOUPLER MONO RADIAL C212-17 C-045 .1 50V DECOUPLER MONO RADIAL C219 C-051 2.2 10V 20% TANT RADIAL C220-32 C-045 .1 50V DECOUPLER NOMO RADIAL D205 D-001 100V 1AMP 1N4002 D208 D-001 100V 1AMP 1N4002 D209-18 D-005 1N914 D219 D-008 1N34 D220 D-005 1N914 DS201-17 L-001 LARGE RED TI LED DS218/19 L-009 7 SEG DISPLAY COMMON CATHODE J201/02 J-087 5 PIN RT ANGLE PC MINT DIN CONN P201 P-092 34 PIN DBL RON HEADER .930 HIGH P202 P-091 34 PIN DBL ROW HEADER .970 P203 P-090 26 PIN DBL ROW .1" HEADER Q201 T-003 PNP TRANSISTOR 2N4250 Q202 T-002 NPN TRANSISTOR 2N3904 R201 R-243 10K LINEAR, REV. PC R202 R-012 10K 1/4W 5% R203 R-025 100K 1/4W 5% R204 R-018 47K 1/4W 5% R205/06 R-010 2K 1/4W 5% R207 R-045 10M 1/4W 5% R208 R-040 22K 1/4W 5% R210 R-040 22K 1/4W 5% R211/12 R-011 4.7K 1/4W 5% R215/16 R-018 47K 1/4W 5% R217 R-061 4.7 1/4W 5% R218 R-011 4.7K 1/4W 5% R219-23 R-040 22K 1/4W 5% R224 R-403 270K 1/4W 5% R225 R-011 4.7K 1/4W 5% R226-28 R-402 150 OHM 1/4W 5% R229 R-025 100K 1/4W 5% R232 R-056 51K 1/4W 5% R233 R-025 100K 1/4W 5% R234/35 R-012 10K 1/4W 5% R236/37 R-243 10K LINEAR, REV PC R238 R-246 DUAL GANG 100K LINEAR TAPER R240/41 R-012 10K 1/4W 5% R242 R-010 2K 1/4w 5% R242 R-243 10K LINEAR, REV PC R243 R-246 DUAL GANG 100K LINEAR TAPER R245 R-049 240 1/4W 5% RP201/02 R-304 10K x 9 SIP S201-18 S-089 OMRON KEY SWITCH (see switch cap below) TB201 E-171 20 PIN RIB JUMP 3/10"W RT ANGL BENT LEAD U211 R-300 39 x 8 RESISTOR NETWORK U212 T-011 TRANSISTOR CA3082 Y201 E-112 8 MH CRYSTAL 060304 NON-DESIGNATED COMPONENTS J-016 40 PIN DIP SOCKET J-045 28 PIN DIP SOCKET M-486 VERTICAL HEATSINK (used on U201) S-093 OMRON GRAY SWITCH CAP S-094 OMRON ORANGE SWITCH CAP 060400 PCB 3 PARTS LIST 060401 INTEGRATED CIRCUITS Designator SCI Part # Description U301/02 (not used) U303 I-228 4174 HEX LATCH DAC LATCH-HI U304 I-228 4174 HEX LATCH DAC LATCH-LO U305 I-228 4174 HEX LATCH MUX/DEMUX ADDRESS LATCH U306 I-228 4174 HEX LATCH DEMUX ENABLE LATCH U307 I-514 DAC7541 12 BIT DAC U308 I-346 LF411 DAC OUTPUT AMPLIFIER U309-1 I-324 NE5532 DUAL OP-AMP DAC REFERENCE BUFFER U309 I-324 5532 DUAL LOW NOISE AMP DAC INFERTER U310 I-301 311 PRECISION ADC COMPATATOR U311 I-211 4051 8-IN ANALOG MUX DAC SIGN BIT SWITCH U312 I-211 4051 8-IN ANALOG MUX SAMPLE/HOLD DEMULTI U313 I-211 4051 8-IN ANALOG MUX SAMPLE/HOLD DEMULTI U314 I-211 4051 8-IN ANALOG MUX SAMPLE/HOLD DEMULTI U315 I-336 CEM3394 SYNTHESIZER VOICE CHIP U316 I-336 CEM3394 SYNTHESIZER VOICE CHIP U317 I-336 CEM3394 SYNTHESIZER VOICE CHIP U318 I-211 4051 8-IN ANALOG MIX SAMPLE/HOLD DEMULTI U319 I-211 4051 8-IN ANALOG MIX SAMPLE/HOLD DEMULTI U320 I-211 4051 8-IN ANALOG MIX SAMPLE/HOLD DEMULTI U321 I-336 CEM3394 SYNTHESIZER VOICE CHIP U322 I-336 CEM3394 SYNTHESIZER VOICE CHIP U323 I-336 CEM3394 SYNTHESIZER VOICE CHIP U324 I-209 4049 HEX INVTR/DRIVER TUNE ANALOG SWITCH U325 I-243 4053 AUDIO SWITCH U326-1 I-332 084/TL074CN QUAD OP AMP TUNE BUFFER U326-7 I-332 084/TL074CN QUAD OP AMP TRK 6 OUT BUFFER U326-8 I-332 084/TL074CN QUAD OP AMP TRK 5 OUT BUFFER U326-14 I-332 084/TL074CN QUAD OP AMP TRK 4 OUT BUFFER U327 I-243 4053 AUDIO SWITCH U328-1 I-332 084/TL074CN QUAD OP AMP MIXER U32801 I-332 084/TL074CN QUAD OP AMP TRK 3 OUT BUFFER U328-8 I-332 084/TL074CN QUAD OP AMP TRK 2 OUT BUFFER U328-14 I-332 084/TL074CN QUAD OP AMP TRK 1 OUT BUFFER U329 I-301 311 PRECISION TUNE COMPARATOR U330 I-338 RETICON 5106 ANALOG DELAY LINE U331 I-349 RETICON 5107 (5106) ANALOG DEL LINE U332-1 I-205 4013 DUAL FLIP-FLOP (NOT USED) U333-1 T-011 MULTIPLE TRANS CA3082 CHORUS IMPUT U333-2 T-011 MULTIPLE TRANS CA3082 CHORUS LFO U333-4 T-011 MULTIPLE TRANS CA3082 CHORUS BUFFER U333-7 T-011 MULTIPLE TRANS CA3082 DELAY BUFFER U333-9 T-011 MULTIPLE TRANS CA3082 CHORUS FILTER U333-12 T-011 MULTIPLE TRANS CA3082 NOT USED U334-2 I-209 4049 HEX INVTR/DRIVER CHORUS CLOCK U334-4 I-209 4049 HEX INVTR/DRIVER CHORUS CLOCK U334-6 I-209 4049 HEX INVRT/DRIVER CHORUS OSC U334-10 I-209 4049 HEX INVRT/DRIVER CHORUS ON/OFF U334-12 I-209 4049 HEX INVRT/DRIVER NOT USED U334-15 I-209 4049 HEX INVRT/DRIVER CHORUS CKL OSC U335-6,7,8 I-202 4007 DUAL COMP PAIR/INVRT CHORUS ON/OFF U335-11,12 I-202 4007 DUAL COMP PAIR/INVRT CHS CLK VC FET U336-1 I-332 084/TL074CN QUAD OP AMP CHORUS PRE-EMPH. U336-7 I-332 084/TL074CN QUAD OP AMP CHORUS DE-EMPH. U336-8 I-332 084/TL074CN QUAD OP AMP CHORUS INVERTER U336-14 I-332 084/TL074CN QUAD OP AMP DRYFX OUT SUMMER U337-1 I-332 084/TL074CN QUAD OP AMP LFO U337-7 I-332 084/TL074CN QUAD OP AMP LEVEL SHIFTER U337-8 I-332 084/TL074CN QUAD OP AMP DRYFX OUT SUMMER U337-14 I-332 084/TL074CN QUAD OP AMP LFO 060402 PASSIVE COMPONENTS Designator SCI Part # Description C301/02 C-105 47 35V ELECT RADIAL C303 C-020 1.0 25V 20% TANT RADIAL C304 C-003 33P 50V 10% DISC RADIAL C307 C-064 2.2UF 50V NONPOLAR ELECT RADIAL C308 C-045 .1 50V DECOUPLER MONO RADIAL C309 C-003 33P 50V 10% DISC RADIAL C310-12 C-045 .1 50V DECOUPLER MONO RADIAL C313 C-095 10 16V 10% ELECT RADIAL C314-16 C-012 .01 50V 20% MYLAR RADIAL C317/18 C-008 .001 50V 20% MYLAR RADIAL C319-21 C-012 .01 50V 20% MYLAR RADIAL C322/23 C-008 .001 50V 20% MYLAR RADIAL C324-26 C-012 .01 50V 20% MYLAR RADIAL C327/28 C-008 .001 50V 20% MYLAR RADIAL C329-32 C-012 .01 50V 20% MYLAR RADIAL C333 C-094 .002 5% POLY AXIAL C334 C-045 .1 50V DECOUPLER MONO RADIAL C335 C-012 .01 50V 20% MYLAR RADIAL C336 C-045 .1 50V DECOUPLER MONO RADIAL C337-39 C-079 .033 100V 10% MYLAR RADIAL C340 C-007 560PF 50V DISC RADIAL C341 C-095 10 16V 10% ELECT AXIAL C342-45 C-012 .01 50V 20% MYLAR RADIAL C346 C-094 .002 5% POLY AXIAL C347 C-0445 .1 50V DECOUPLER MONO RADIAL C348 C-012 .01 50V 20% MYLAR RADIAL C349 C-045 .01 50V 20% MYLAR RADIAL C350-52 C-079 .033 100V 10% MYLAR RADIAL C353 C-007 560PF 50V DISC RADIAL C354 C-095 10 16V 10% ELECT RADIAL C355-58 C-012 .01 50V 20% MYLAR RADIAL C359 C-094 .002 5% POLY AXIAL C360 C-045 .1 50V DECOUPLER MONO RADIAL C361 C-012 .01 50V 20% MYLAR RADIAL C362 C-045 .1 50V DECOUPLER MONO RADIAL C363-65 C-079 .033 100V 10% MYLAR RADIAL C366 C-007 560PF 50V DISC RADIAL C367 C-095 10 16V 10% ELECT RADIAL C368-70 C-012 .01 50V 20% MYLAR RADIAL C371/72 C-008 .001 50V 10% MYLAR RADIAL C373-75 C-012 .01 50V 20% MYLAR RADIAL C376/77 C-008 .001 50V 10% MYLAR RADIAL C378-80 C-012 .01 50V 20% MYLAR RADIAL C381/82 C-008 .001 50V 10% MYLAR RADIAL C383 C-097 1UF 50V ELECT RADIAL NON-POL C384 C-052 2.2 15V ELECT AXIAL C385 C-097 1UF 50V ELECT RADIAL NON-POL C386-89 C-012 .01 50V 20% MYLAR RADIAL C390 C-094 .002 5% POLY AXIAL C391 C-045 .1 50V DECOUPLER MONO RADIAL C392 C-012 .01 50V 20% MYLAR RADIAL C393 C-045 .1 50V DECOUPLER MONO RADIAL C394-96 C-079 033 100V 10% MYLAR RADIAL C397 C-007 560PF 50V DISC RADIAL C398 C-095 10 16V 10% ELECT AXIAL C399-102 C-012 .01 50V 20% MYLAR RADIAL C3103 C-094 .002 5% POLY AXIAL C3104 C-045 .1 50V DECOUPLER MONO RADIAL C3105 C-012 .01 50V 20% MYLAR RADIAL C3106 C-045 .1 50V DECOUPLER MONO RADIAL C391 C-045 .1 50V DECOUPLER MONO RADIAL C392 C-012 .01 50V 20% MYLAR RADIAL C393 C-045 .1 50V DECOUPLER MONO RADIAL C394-96 C-079 .033 100V 10% MYLAR RADIAL C397 C-007 560PF 50V DISC RADIAL C398 C-095 10 16V 10% ELECT AXIAL C399-102 C-012 .01 50V DECOUPLER MONO RADIAL C3103 C-094 .002 5% POLY AXIAL C3104 C-045 .1 50V DECOUPLER MONO RADIAL C3105 C-012 .01 50V 20% MYLAR RADIAL C3106 C-045 .1 50V DECOUPLER MONO RADIAL C3108-110 C-079 .033 100V 10% MYLAR RADIAL C3111 C-007 560PF 50V DISC RADIAL C3112 C-095 10 16V 10% ELECT AXIAL C3113-116 C-012 .01 50V 20% MYLAR RADIAL C3117 C-094 .002 5% POLY AXIAL C3118 C-045 .1 50V DECOUPLER MONO RADIAL C3119 C-012 .01 50V 20% MYLAR RADIAL C3120 C-045 .1 50V DECOUPLER MONO RADIAL C3121-123 C-079 .033 100V 10% MYLAR RADIAL C3124 C-007 560PF 50V DISC RADIAL C3125 C-095 10 16V 10% ELECT AXIAL C3126/27 C-045 .1 50V DECOUPLER MONO RADIAL C3129 C-045 .1 50V DECOUPLER MONO RADIAL C3131 C-045 .1 50V DECOUPLER MONO RADIAL C3134-136 C-045 .1 50V DECOUPLER MONO RADIAL C3137 C-097 1UF 50V ELECT RADIAL NON-POL C3138/139 C-103 47UF 10V ELECT RADIAL C3140/141 C-019 .47 35V 20% TANT RADIAL C3142 C-079 .033 100V 10% MYLAR RADIAL C3143 C-097 1UF 50V ELECT RADIAL NON-POL C3144 C-113 .0033 5% MYLAR RADIAL C3145 C-006 47UF 10V ELECT RADIAL C3146 C-019 .47 35V 20% TANT RADIAL C3147 C-114 .068 5% MYLAR RADIAL C3148 C-116 .0082 10% RADIAL MYLAR C3149 C-019 .47 35V 20% TANT RADIAL C3150 C-114 .068 5% MYLAR RADIAL C3151 C-004 100P 50V 10% DISC RADIAL C3152 C-112 .0068 3% MYLAR RADIAL C3153 C-004 100P 50V 10% DISC RADIAL C3154/155 C-045 .1 50V DECOUPLER MONO RADIAL C3156/157 C-004 100P 50V 10% DISC RADIAL C3158 C-115 68P 20% CERAMIC DISC C3159 C-003 33P 50V 10% DISC RADIAL C3160 C-116 .0082 10% RADIAL MYLAR C3161 C-045 .1 50V DECOUPLER MONO RADIAL C3162 C-006 470P 50V 10% DISC RADIAL C3163 C-113 .0033 5% MYLAR RADIAL C3164 C-079 .033 100V 10% MYLAR RADIAL C3165 C-012 .01 50V 20% MYLAR RADIAL C3166-167 C-045 .1 50V DECOUPLER MONO RADIAL C3168 C-004 100P 50V 10% DISC RADIAL C3169 C-045 .1 50V DECOUPLER MONO RADIAL C3170 C-103 47UF 10V ELECT RADIAL C3171 C-052 2.2 15V ELECT AXIAL C3172 C-045 .1 50V DECOUPLER MONO RADIAL C3173 C-097 1UF 50V ELECT RADIAL NON-POL C3174 C-048 .047 50V 10% MYLAR RADIAL C3175-79 C-045 .1 50V DECOUPLER MONO RADIAL C3180 C-103 47UF 10V ELECT RADIAL D304-06 D-005 1N914 D307-19 D-008 [illegible] J301 J-080 34 PIN PC MOUNT DBL ROW SOCKET J302 J-093 16 PIN 1" PC MNT RECEPTICLE J303-10 J-090 1/4" STEREO JACK W/SWTON Q302/03 T-002 NPN TRANSISTOR 2N3904 R301 R-066 300K 1/4W 5% R302 R-094 180K 1/4W 5% R303/4 R-047 10 1/4W 5% R305-07 R-010 2K 1/4W 5% R308 R-076 27K 1/4W 5% R309 R-217 100K 1 TURN TOP ADJUST INV OFFSET TRIM R310 R-164 3.01K 1/4W 1% MATCHED WITHIN .1% OF R313 R311 R-218 10K 1 TURN TOP ADJUST DAC OFFSET TRIMMER R312 R-030 2.2M 1/4W 5% R313 R-164 3.01K 1/4W 1% MACTHED WITHIN .1% OF R313 R314 R-008 1K 1/4W 5% R315 R-500 4.02K 1/4W 1% R316 R-009 1.5 1/4W 5% R317 R-030 2.2M 1/4W 5% R318 R-006 470 1/4W 5% R320-25 R-029 1M 1/4W 5% R326-28 R-115 301K 1/4W 1% R329-34 R-029 1M 1/4W 5% R335 R-034 2.2K 1/4W 5% R336 R-026 200K 1/4W 5% R337 R-014 15K 1/4W 5% R338/39 R-008 1K 1/4W 5% R340 R-037 7.5K 1/4W 5% R341-43 R-115 301K 1/4W 1% R344 R-008 1K 1/4W 5% R345/46 R-052 1.2K 1/4W 5% R347 R-008 1K 1/4W 5% R348-50 R-010 2K 1/4W 5% R351 R-030 2.2M 1/4W 5% R352 R-052 1.2K 1/4W 5% R353 R-008 1K 1/4W 5% R354 R-066 300K 1/4W 5% RR355 R-006 470 1/4W 5% R356 R-030 2.2M 1/4W 5% R357 R-010 2K 1/4W 5% R360 R-008 1K 1/4W 5% R361 R-052 1.2K 1/4W 5% R362 R-063 910 1/4W 5% R363 R-052 1.2K 1/4W 5% R364 R-008 1K 1/4W 5% R365 R-052 1.2K 1/4W 5% R366 R-008 1K 1/4W 5% R367 R-076 27K 1/4W 5% R368 R-015 20K 1/4W 5% R369 R-025 100K 1/4W 5% R371 R-015 20K 1/4W 5% R372 R-014 15K 1/4W 5% R373 R-012 10K 1/4W 5% R374 R-014 15K 1/4W 5% R375 R-025 100K 1/4W 5% R376 R-012 10K 1/4W 5% R377 R-095 330K 1/4W 5% R378/79 R-012 10K 1/4W 5% R380 R-029 1M 1/4W 5% R381 R-012 10K 1/4W 5% R385 R-029 1M 1/4W 5% R386 R-012 10K 1/4W 5% R387-89 R-018 47K 1/4W 5% R390/91 R-012 10K 1/4W 5% R392/93 R-018 47 1/4W 5% R394 R-020 62K 1/4W 5% R395 R-018 47K 1/4W 5% R396 R-167 52.3K 1/4W 5% R397 R-008 1K 1/4W 5% R398 R-015 20K 1/4W 5% R399/100 R-008 1K 1/4W 5% R3101 R-041 150K 1/4W 5% R3102 R-025 100K 1/4W 5% R3103 R-039 18K 1/4W 5% R3104 R-052 1.2K 1/4W 5% R3105 R-012 10K 1/4W 5% R3106 R-029 1M 1/4W 5% R3107-09 R-012 10K 1/4W 5% R3110 R-095 330K 1/4W 5% R3111 R-044 270K 1/4W 5% R3112 R-029 1M 1/4W 5% R3113 R-012 10K 1/4W 5% 070000 RESOURCES AND REFERENCES 070001 HARWARE SUPPORT - A 3 volt lithium cylinder battery with tabs is available from Digi-Key. Phone 1-800-344-4539 and ask for their current catalog. - Wine Country Productions is the world's largest dealer in Sequential Circuits equipment. Wine Country Productions 1572 Park Crest Court #505 San Jose CA 9518 USA (408) 265-2008 - Analogics offers MIDI retrofits for several Sequential keyboards. Analogics 5261 Maple Ave. East Geneva OH 44041 USA (216) 466-6911 070002 THIS FAQ - The author of this FAQ is no longer supporting it. Depending how far away you are from late 1996, try Analog Heaven. 070003 OTHER FAQS AND ON-LINE RESOURCES - NetJam Electronic and Computer Music FAQ by C. Ftp from: ftp.rtfm.mit.edu /pub/usenet-by-group/rec.music.makers.synth - The Sequential Circuits Incorporated Home Page by Christopher Jones: http://mcjones-mac.wca.ohio-state.edu/Self-Oscillator - Analog Heaven: http://www.hyperreal.com - Usenet newsgroups to scan for Multi-Trak and Sequential postings might include... rec.music.makers.synth rec.music.synth 070100 BIBLIOGRAPHY 070101 SEQUENTIAL - CM615-B Multi-Trak Operation Manual - January 1985 - MG615-A Model 615 Multi-Trak MIDI Guide - February 1985 - TM615-A Multi-Trak Model 615 Technical Manual - April 1985 - CH615-1 Multi-Trak Instruction Card - no date 070102 OTHER - The Synthesizer & Electronic Keyboard Handbook by David Crombie - 1984 - Keyboard Magazine - August 1985 - The New Complete Synthesizer by David Crombie - 1986 - The Rock Synthesizer Manual by Geary Yelton - 1986 - Synthesizer Basics by Dean Friedman - 1986 - Survival of the Analog Prophets (Wine Country) - 1993 - NetJam Electronic and Computer Music FAQ by C - 1994