KURZWEIL K2000/K2000R. SERVICE MANUAL KURZWEIL Kurzweil is a product line of Young Chang America, Inc Young Chant es onda s, CA 30701-2205 P/N 92002000** IMPORTANT INFORMATION **! READ THIS PAGE BEFORE PROCEEDING! THERE ARE NO USER SERVICEABLE COMPONENTS OR ASSEMBLIES INSIDE THIS INSTRUMENT. This service manual is written for use by qualified service personnel only. Possession of this service manual does not qualify its owner or user as a competent service technician on this product. Any attempts to repair, modify, adjust or service any internal component or assembly by non-approved personnel may void all existing warranties on this instrument and any installed options. only the Kurzweil service Department has the authority to make the determination as to who is a qualified technician. For further information, contact the Kurzweil National service Manager at (310) 926-3200.W ARN NG EXPLANATION OF GRAPHIC SYMBOLS: RISK OP ELECTRIC SHOCK ‘rae tingh oman cr ort oie pe WARNING. TO REDUCE THE RISK OF ELECTRIC SHOCK, ‘The exclamation pont wn an eases rng intended DO.NOT REMOVE THE BOTTOM. {eet hart preme ofSpa pea a NO USER SERVICEABLE FARTS SIDE Se corey aan oe ee IMPORTANT SAFETY AND INSTALLATION INSTRUCTIONS TNSTRUGHTONS PERGAINING 50 THE RIGK OF FIRE; ELECTRIC SHOCK, OR TRIURY TO PERSONS WARITNG ~ Hnen using electric products, basic precautions should always be followed, including the following 1. Read all of the Sat produce, 2. This product must be grounded. If it should malfunction of breakdown, grounding provides a path of least resistance for electric current to reduce the risk of electric shock. This product is equipped with a power Supply cord naving an equipment-grounding conductor and a grounding plug. The plug must be plugged into an appropriate outlet which 5 properly installed and grounded in accordance with all Local codes and ordinances DANGER = improper Connection of the equipsent-grounsing conductor can result in a risk of electric shock, Do not modify the plug provided with the product ~ if it will not fit the outlet, nave a proper outlet install by a qualified electrician. Ds not use an adaptor which defesta the function of the equipment -gzounaing conductor. If you are in doubt as to whether the product is properly grounded, check with a qualified 5. WARNING = this product te equipped with an AC input voltage selector. The voltage selector has been factory set for the pain supply voltage in the country where this unit was sold. The setting of the voltage Selector can be seen just to the right of the power input receptacle on the back of the product. ‘Chasging she voltage selector may require the use of a different pover supply cord or attachment plug, or both. The 2234 the risk of fore or electric shock, refer servicing te qualified maintenance personnel. 4. Do not use this product near water ~ for example, near a bathtub, wasnbowl, kitchen eink, in a wet Dasenene, o near a swimming pool, of the like 5. This product should only be used with a stand oc cart that is cecommended by the manufacturer 'y and Installation instructions and Explanation of Graphic Symbols before using the 6] This product, oither alone oz in combination with an amplifier and speakecs of headphones, may be capable of producing sound levels that could cause pernanent hearing loss. Do not operate for a long period of tine St A high volume Level or at a level chat is uncomfortable, If you experience any Nearing less or einging in the ears, you should consult an audiologist. 3. the product should Be sfiented such that ite location of pos 4. The product should be located avay from neat sources such as cadiators, neat registers, or other products that produce heat 3." The product should be connected to power supply only of the type described in the operating insteucti st as marked on the product 20, This product may be equipped with 2 polarized Line plug (one blade wider than the other]. This is 9 safety feature. Tf you are unable to insect the plug into the outlet, contact an electrician to replace your sbaolete sutles. do not defeat the safety puspose of the plug, The power supply cord of the product should be unplugged from the outlet when left unused for = long period of tine. Nnen unplugging the power supply cora, do net pull on the cord, but grasp st by the plug 12, Care should be taken eo that obsects do not fall and liguids are not spilled into the enclosuce cheough Spenings: 13, The product shouid be serviced ey qualified secvice personnel wien: The power supply cord oe che plug has been damaged; or Qvjects have fallen, of Liquid has been spilled into the products or The product has been exposed to cain? ox The Product does not appear to be operating nosmally or exhibits a marked change in performance: > The product has been dropped, of the enclosure aanaged. 4. Do not attempt to service the product beyond that described in the user maintenance instructions. All other servicing should be referred to qualified service personnel 18. MUBING = Do not place objects on the product's power gupply 2ord, oF place the product in a position ion does not interfere with ite proper Where anyone could trip over, walk on, of roll anything aver cords of any type. bo hot ailow the peoduss to rest on oc be installed over cords of any type. Improper installations of thie type create the possibility of e hazard and/or personal injury. SAVE THESE INSTRUCTIONSRADIO AND TELEVISION INTERFERENCE Warning: Changes or modifications to this instrument not expressly approved by Young Chang could void your authority to operate the instrument. Important: When connecting this product to accessories and/or other equipment use only high quality shielded cables. The cable(s) supplied with this instrument must be used. Note: This instrument has been tested and found to comply with the limits for a Class 3 digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This instrument generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that inte will not occur in a particular installation. If this instrument does cause hare interference to radio or television reception, which can be determined by turning the instrument off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna. Increase the separation between the instrument and the receiver. Connect the instrument into an outlet on a circuit different from the If necessary consult your dealer or an experienced radio/television technician for additional suggestions. You may find the following booklet prepared by the Federal Communications Comission to be helpful: "How To Identify and Resolve Radio-TV Interference Problems” This booklet is available from the U.S. Government Printing Office, Washington, D.C. 20402, Stock No. 004-000---345-4. NOTICE This apparatus does not exceed the Class B limits for radio noise enmissions from digital apparatus set out in the Radio Interference Regulations of the Canadiai Department of Communications. AVIS Le present appareil numerique n'emet pas de bruits radicelectriques depassant les ites applicables aux appareils numeriques de la class B prescrites dans le Reglemer sur le brouillage radicelectrique edicte par le ministere des Communications du Canaca © 1992 All rights reserved. Kurzweil is a product line of Young Chang Akki Co., LTD. Kurzweil, K2000, and MIDIScope are trademarks of Young Chang Akki Co., LTD. The names Akai, $1000, Apple, MacIntosh, DX7, IBM, DOS, MS-DOS, and Roland are registered trademarks of the respective companies using these names. This manual is current with K2000 version 1.00 software. Product features and specifications are subject to change without notice. iiiK2000/K2000R TABLE OF CONTENTS NOTE: Any sections not specifically identified with the K2000 or the K2000R apply to both units. SPECIFICATIONS 1 GLOSSARY 5 SETUP T K2000 OPERATIONAL CHECKOUT 5 K2000 POWER-UP CHECK 11 K2000R OPERATIONAL CHECKOUT 17 2 K2000 DISASSEMBLY/ACCESS 1 K2000R DISASSEMBLY/ACCESS 7 %2000 MAINTENANCE T cae K2000/K2000R TROUBLESHOOTING 7 DIAGNOSTICS 11 K2000R MAINTENANCE 47 OPTIONS A TECHNICAL THEORY 1 K2000 PARTS LIST 1 K2000R PARTS LISTS 9 K2000/K2000R WIRING GUIDE 1 SCHEMATICS /DIAGRAMSSECTION 1 seoesrte.o0c o1/04/88 1.0 _K2000_ SPECIFICATIONS 1.1 K2000 FEATURES 61-key spring return synth action keyboard Sends and receives mono (channel) pressure; receives poly pressure Spring loaded Pitch Wheel Full throw Modulation Wheel, progranmable Volume Slider Programmable Controller Slider Two programmable switch pedal inputs Programmable continuous controller input 240 x 64-pixel backlit graphic display with adjustable contrast 3.5 inch floppy disk drive, for DD or HD disks, DOS compatible MIDI IN, THRU and OUT 24-note polyphony with dynamic voice allocation Multi-timbral, for multi-track sequencing and recording 199 factory preset programs, and 100 factory preset setups Up to 3 layers per program, up to 32 layers for programs on drum channel 3-zone setups transmit on 3 MIDI channels with independent programmable controls * 15,000 note scratchpad sequencer for recording from keyboard or via MIDI; loads and plays MIDI Type 0 sequences * Easy-to-use programming interface including soft buttons, Alpha Wheel, and alphanumeric pad + 8 Megabytes of 16-bit sample ROM, including acoustic instrumental sounds, waveforms, and noise * 20 KHz maximum bandwidth * Optional stereo sampler with analog and digital inputs * Sound ROM expandable to a total of 24 Megabytes * Sound sample playback * 4 SIMM sockets for optional sample RAM - up to 64 Megabytes * Akai™ 31000 sample disk compatibility * Two 1/4 inch mixed audio outputs (stereo pair) * Four 1/4 inch audio outputs programmable as 2 stereo pairs or as four separate outputs, with insert capability for effects patching * Stereo headphone jack * 128 KB battery backed RAM for user programs, setups and other objects * SCSI port for connection with external SCSI disk or CD-ROM * Optional internal hard disk * Real-time DSP for each voice: 31 programmable DSP algorithms incorporating filters, £Q, distortion, panning, pulse width modulation, and more; up to 3 programmable DSP functions per voice * Filters: Lowpass, Highpass, Allpass, Bandpass, Notch, programmable * Programmable stereo multi-effects on MIX outputs, including simultaneous reverb, chorus, delay, flanging, EQ - and more * Real-time internal and MIDI control of effects parameters * MIDI standard sample dump capability * System Exclusive implementation * MIDIScope™ for analyzing MIDI eventsSECTION 1 ‘20008PEC.00C 01/03/93 1.2 K2000R FEATURES ‘The Kurzweil K2000R offers the same powerful features as the K2000 including: * Convenient 3-space rack module * 240 x 64-pixel backlit graphic display with adjustable contrast 3.S-inch floppy disk drive, for DD or HD disks, DOS compatible MIDI In, Thru, and Out MIDI LED to indicate MIDI activity 24-note polyphony wiht dynamic voice allocation Multi-timbral, for multi-track sequencing and recording 199 factory preset programs, and 100 factory preset setups Up to 3 layers per program, up to 32 layers for programs on drum channel Receives mono (channel) pressure and poly (key) pressure 3-zone setups transmit on 3 MIDI channels with independent progranmable controls * 15,000 note scratchpad sequencer for recording from keyboard or via MIDI; loads and plays MIDI Type 0 sequences © Easy-to-use programming interface including soft buttons, Alpha Wheel, and alphanumeric pad © 20KH2 maximum bandwidth * Stereo sample playback capability Programmable stereo multi-effects on MIX outputs, including simultaneous reverb, chorus, delay, flanging, EQ...and nore + Realtime internal and MIDI control of effects parameters * Kurzweil's proprietary VAST™ (Variable Architecture Synthesis Technology) system 31 sound shaping algorithms Three programmable DSP functions for each voice 8 Megabytes of ROM (16-bit) samples Built-in 3.5" floppy drive (HD/DD) Two SCSI buses, for connection with external SCSI disks, CD-ROM, or MacIntosh computers. Ten analog outputs, including four stereo pairs and a stereo master pair Internal ROM expansion capability to 24 Megabytes * Two 8 Megabyte ROM sound blocks (ROM-1, ROM-2) can be purchased and installed separately * Sampling option Kit (DSMP-R), which allows for user sampling via analog, digital or optical inputs * ABS-EBU and SPDIF digital ins and outs are offered; the version 2.0 software* included with this kit provides extensive sample editing and audio processing capabilities + Sample RAM can be expanded via four standard SIMM memory modules (up to 64 Megabytes) * Program/Sequence memory expansion option (DP-RAM) expands battery backed memory from 120K to 760K * CD-ROM compatible with Sony and Toshiba drives * Capacity for an optional internal hard drive (up to 240 Megabytes or more) * Standard equipped with version 1.27 software, allowing the user to port over stereo samples via the SCSI bus (SMDI protocol) using Passport's Alchemy™ or through sample dump over MIDI * Reads sample data from Akai $1000 HD disks “Version 2.0 software, which is part of the SMP-R sampling option, allows for graphic waveform editing via the built-in 240 x 64 display. Features include Powerful sample editing and DSP functions (time compression/expansion, sample rate conversion, sample mixing and splicing, normalizing gain, audible sample cueing, crossfade looping, auto looping, fade in/out and more).SECTION 1 aoesrec.boc 02/03/93 Version 2.0 also adds extensive library compatibility functions to the 2000/K2000R, including the ability to read Ensoniq™ EPS disks (samples, keymaps and constructs programs) and Akai™ $1000 (samples, keymaps and constructs programs). This version also provides visual editing of K2000/K2000R's internal ROM samples as well as RAM samples, plus user~ programmable loop type per sample (forward, bi-directional, off) and direction (forward, reverse), new alternate release parameters (samples may now play after the release loop) and much more. Version 2.0 software will also be available separately from the Sampling option Kit. 1,3 ENVIRONMENTAL SPECIFICATIONS ‘Temperature ranges For operation: ninimm 9 F (so) meximm 1049 F (408 ¢) For storage: Rinimm 130 F (4259 ¢) Raxinin 186° F (88° ©) Relative humidity ranges (non-condensing): Operation and storage = 5 - 95 1.4 PHYSICAL SPECIFICATIONS Overall dimensions: K2000 Width 40 15/16 in. 104 cm Depth 13 7/16 in. 34.1 om Height 41/8 in. 10.5 cm Weight 26 lb. 11.8 kg Overall dimensions: K2000R Width 16.9 in. 43 om Depth 13.9 in. 35.4 om Height + 5.1 dn. 13 om Weight 22 lb. 10 kg * Excluding the rack-mount brackets 1.5 ELECTRICAL SPECIFICATIONS AC supply: selectable; 100V, 120V, 220V, 240V; .75 amps at 120 volts nominal Safe voltage ranges (volts rms) Voltage setting: 100v 120v 220v 240v ‘Safe voltage range: 85 - 107 95 - 125V_ 180 - 252V 190 - 250V Safe frequency range: 48 - 65 Hz 48 - 65 Hz 48 - 65 48 - 65 Bz If the voltage drops below the minimum safe level at any voltage setting, the K2000 will reset, but no data will be lost. If the voltage exceeds the maximum safe level, the K2000 may overheat. SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICESECTION 1 1.6 GLOSSARY OF TERMS Algorithm Aliasing Amplitude Analog Bandwidth Continuous Control. Control Source DsP In the K2000, a preset configuration of programmable digital signal processing functions. Each of a program's layers uses its own algorithm, which determines the type of synthesis each layer uses to generate its sound. A type of distortion which occurs in digitally sampled sounds when higher pitches (increased sample playback rates) introduce partials that were not present in the original sound. These partials may or may not be musically useful. The intensity of a signal, perceived as loudness in the case of audio signals. A term used widely in electronics-related fields to describe a method of representing information, in which the method of representation resembles the information itself. Analog synthesizers, for example, use gradual variations in electrical voltage to create and modify sounds. The oscillations in voltage are analogous to the waveforms of the sounds they generate. Compare digital. In terms of sound generation, the range of frequencies within which a device functions. The human ear has a “bandwidth” of almost 20 KHz (it can distinguish sound at frequencies from 20 Hz to 20 KHz). The K2000's 20 Kz bandwidth enables it to produce sounds which span the entire range of human hearing. There are two types of banks in the K2000's memory: memory banks, which store and organize the programs and other objects you create, and Quick Access banks, where you can store programs and setups for one-button access while in Quick Access mode. 1/100th of a semitone. The standard increment for fine adjustment of pitch. A device which converts motion into a range of 128 possible values which can modulate a sound source. The Mod Wheel, a standard volume pedal, and controllers like Breath and Aftertouch are continuous controls. Compare switch controls. Anything which can be used to modify some aspect of a program's sound. LFOs, envelopes, Mod Wheel messages (MIDI 01), and FUNs are just a few examples of the 2000's control sources. Digital Signal Processing.SECTION 1 DSP Functions Default Dialog Digital Drum Program DsP the K2000's collection of digital signal processing functions are what give the Variable Architecture Synthesis system its flexibility. Within each layer's algorithm, you can select from a long list of DSP functions like filters, EQ, oscillators, and a few that are unique to the K2000, Each DSP function has a corresponding page which enables you to assign numerous control sources to define how the DSP functions affect the sound of the program being edited. The starting condition of a system. The settings for the K2000's parameters are at their defaults when you unpack it, and they stay there until you change them. A hard reset will erase RAM and restore all parameters to their defaults. A page which prompts you to enter information that the 2000 needs in order to execute an operation. Dialogs appear, for example, when initiating a Save or Delete operation. A term used widely in electronics-related fields to describe a method of representing information as a series of binary digits (bits) - 1s and 0s. Digital computers process these strings of 1s and 0s by converting them into an electrical signal that is always in one of two very definite states: "on" or "off." this is much more precise than the analog method, therefore digital computers can operate at speeds unattainable by analog devices. Digital synthesizers like the K2000 are actually computers which process vast strings of digital information signals, eventually converting them (at the audio output) into the analog signals which flow into PAs and other audio systems. See also Analog. The only difference between a drum program and an ordinary program is the drum program can contain up to 32 layers instead of the usual maximum of three. Since each layer has its own keymap and algorithm (not to mention all the other control sources), this gives you enormous control over whatever sounds assigned tot he layers in a drum program. Digital Signal Processing; this term refers to a vast range of functions, all of which have in common the fact that they act upon an electric current as it flows through a circuit or group of circuits. A simple form of signal processing is the distortion box used by many guitarists. Digital signal processing refers to similar processes which are performed by digital circuitry as opposed to analog circuitry. Many of the effects devices available today use digital signal processing techniques.SECTION 1 Editor Envelope File Global Hard Reset The complete set of parameters used to modify a particular aspect of the K2000, for example, the currently selected program, which is modified with the Program Editor. The Program Editor spans several display pages, which can be viewed by using the soft buttons (labeled ""). An aperiode modifier. In other words, a way to cause a sound to change over time without necessarily repeating the change (unlike periodic modifiers like LFOs, which repeat at regular intervals). A group of objects stored to a floppy or hard disk, or loaded into the K2000's RAM from disk. In this manual, used primarily in reference to control sources. A global control source affects all notes in a layer uniformly. If a layer uses a global control source, that control source begins to run as soon as the program containing it is selected. Its effect on each note will be completely in phase, regardless how many notes are being played. Compare Local. Resets all parameter values to their defaults, and completely erases the contents of RAM. Press the Reset button in Master mode to do a hard reset: This is a quick way to restore the factory defaults to the 2000, but EVERYTHING in RAM (all the objects the owner/artist has created) will be erased, so objects you wish to keep should be saved to disk or SyxEx dump. A hard reset would not be used to recover if your K2000 is hung up, except as a last resort. See Soft Reset. A keymap is a collection of samples assigned to specific keys and keystrike velocities. Keymaps usually contain numerous sample roots pitch-shifted across a range of several keys. When you strike a key, the keymap tells the K2000 what sound to play, at what pitch and at what loudness. Low frequency oscillator. An oscillator is an electrical signal which cycles regularly between a minimum and maximum amplitude. The simplest oscillating waveform is the sine wave, but an LFO waveform can have almost any shape. The number of times each second that an oscillator repeats itself is called its frequency, which is measured in Hertz (Hz). Anything up to 50 Hz is considered low-frequency in musical applications. Use an LFO whenever you want to generate a periodic (repeating) effect. Adjusting the rate of the LFO will change the repetition rate of the effect.SECTION 1 Layer Leslie Effect Local Memory Banks MIDI MIDI Device MIDI Master MIDI Slave NL DSP Function A layer consists of a keymap processed through an algorithm. Layers can be stacked together within a program. Each layer uses one of the K2000's 24 available voices. Each K2000 program can contain up to three layers ~ except drum channel programs, which can contain up to 32 layers. ‘This classic vibrato effect was originally created by mounting a speaker in its cabinet so the speaker could be rotated at varying speeds. This applied a vibrato of varying rate to all sounds played through the rotating speaker. In this manual, used primarily in reference to control sources. A local control source affects each note in a layer independently. For example, if a local LFO is used as a control source, a separate LFO cycle will begin with each note start. The LFOs do not run in phase unless notes are started simultaneously. Compare Global. ‘The K2000's memory is divided into ten spaces where you can store any object you edit. These spaces are called banks. Each bank can hold up to 100 objects of each type, so we refer to them as the 100s bank, the 200s bank, and so on. The ID of an object determines in which bank it is to be stored. An object with an ID of 399, for example, would be stored in the 300s bank. ROM objects are stored in the Zeros and 100s banks. RAM objects can be stored in any bank. Musical Instrument Digital Interface. A specialized format for representing musical information in terms of standardized computer data, which enables electronic musical instruments to communicate with computers. Any device - keyboard, computer, wind instrument, etc. = which is capable of transmitting and receiving MIDI messages. A MIDI device which is configured to control one or more other MIDI devices. The MIDI Out port of the master is connected by cable to the MIDI In port(s) of the slave device(s). A MIDI device which is configured to receive MIDI messages from a master device. The MIDI In port of the slave is connected by cable to the MIDI Out port of the master. Non-linear DSP functions like SHAPER and WRAP add waveforms to those already present in a sound, while linear DSP functions act upon the existing waveforms without adding new ones.SECTION 1 Note state Object Page Parameter Pixel Program Program Editor Sample Any K2000 is either on or off; this is its note state. Normally, any given note's Note State switches on when you strike the key for that note. It switches off when you release the key, and any sustain controls you may have applied to the note (Sustain or Sostenuto pedal, etc.). A chunk of information stored in the K2000's memory. Programs, setups, keymaps, and samples are all objects. There are several others as well. A set of performance or programming parameters which appear as a group in the display. The entry level page for each mode appears when you select the mode. Most other pages are selected with the soft buttons, from within an editor. A programming feature. The name of the parameter describes the function it controls - transposition, for example. Each parameter has a value associated with it, which indicates the status of the parameter. A contraction of “picture element." The K2000's display consists of a screen with small square dots (the pixels). Each pixel lets light through or blocks it depending on whether it is receiving an electrical charge. The combination of light and dark dots creates a pattern which you recognize as text or graphics. The K2000's display is 240-by-64 pixels, in other words, 64 horizontal rows, each containing 240 pixels, for a total of 15360 pixels. The K2000's basic performance-level sound object. Programs can consist of up to 3 layers (32 layers for programs on the drum channel); each layer has its own keymap (set of examples) and sound-processing algorithm. The set of parameters that lets you modify the sound of ROM or RAM programs. Enter the Program Editor by pressing the EDIT button while in Program mode, or any time the currently selected parameter has program as its value. Random Access Memory, one of the two basic types of computer memory. RAM can be both read from and written to. When you load samples into the K2000 you are writing to RAM. Compare ROM. Read Only Memory, one of the two basic types of computer memory. You can retrieve the information stored in ROM, but information cannot be written to it. The onboard sounds of the K2000 are stored in ROM. A digital recording of a sound that can be assigned to a keymap as part of the process of building a program. Samples are stored in ROM (factory-installed) or in RAM (loaded from disk).SECTION 1 ses Semitone Setup Soft Reset Switch control Toggle value vast Pronounced "skuzzy," this acronym stands for Small Computer Systems Interface. It is simply a standardized form of information exchange which allows any SCSI equipped device to communicate with any other SCSI device. Two or more SCSI devices - they can be computers, hard disks, printers, just about anything that sends or receives information in standardized form - are connected via special cables to their SCSI ports. This configuration is much faster than serial information exchange, the precursor to SCSI. The standard interval between the twelve notes in the scale, There are twelve semitones to an octave. The interval between C and CH is one semitone. A multi-timbral performance object. A setup consists of three zones, each of which can be assigned its own program, MIDI channel, and control assignments. These assignments control the K2000's operation while in Setup mode, as well as determining the Program Change numbers and controller messages the K2000 sends via MIDI. Returns the K2000 to Program mode without affecting the contents of RAM. Press the +/-, 0, and CLEAR buttons to do a soft reset. IF your K2000 is hung up for some reason, this will usually get take care of the problem. See Hard Reset. A device which converts motion into discrete on/off signals. A switch control, like the sustain pedal, is either on or off. Compare continuous control. As a verb, to switch between (usually) two conditions using a device which makes the switch. As a noun, the device which makes the switch. For example, pressing the "View" soft button on the top level Program mode page toggles between small-type and large-type views of the current Program. the current setting of a parameter, Each parameter has a range of available values, one of which you select while editing. The Transposition parameter on the Program mode page, for example, has a default value of 0. Change the value to change the parameter's effect on the current program. Variable Architecture Synthesis Technique; the term created by Kurzweil engineers to describe the multi- faceted capabilities of the K2000, which combines sample playback (ROM and RAM), and waveform generation with a broad array of processing functions. This architecture provides preset algorithms created by Kurzweil sound engineers, which include filters, distortion, panning, £Q, waveform oscillators, waveform shaper, hard sync oscillators, amplitude modulation, gain, crossfade, and more. 10SECTION 1 Zere Crossing Any of a number point in the digital representation of a sound's waveform where the digital signal is neither positive or negative. When looping samples, starting the loop at one of these points will reduce or eliminate the click or change in timbre that can occur in sample loops. aSECTION 2 ssmves.evm a3/24/98 2.0 SETUP AND OPERATIONAL CHECKOUT 21 VOLTAGE SELECTION 2.1.1 ‘The K2000 is equipped with a voltage selector which allows operation on single-phase AC of 100 Volts, 120 Volts, 220 Volts, or 240 Volts. The selector is set at the factory for the AC line voltage most commonly in the country of destination. The setting can be checked by looking at the small panel just to the left of the AC power connector - a white indicator pin is visible in the hole next to the selected voltage. WARNING: Do not attempt to operate the K2000 on any AC voltage other than the one selected - exte 10 the unit may result! |WARNING: — CHANGING THE VOLTAGE SELECTOR MAY REQUIRE THE USE OF A DIFFERENT LINE CORD OR ATTACHMENT PLUG, OR BOTH. TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. 2.1.2 To change the selected voltage: 1 Turn the unit off and remove the AC line cord from the AC power connector. 2. Open the cover of the fuse/voltage select compartment using a small blade screwdriver or similar tool. 3. Pull the voltage selector card straight out of the housing, using the indicator pin (See Figure 2.1 below). 4. Orient selector card so the desired voltage is readable at the bottom. 5 Orient the indicator pin to point up when the desired voltage is readable at the bottom (See Figure 2.2 below). 6 Insert the voltage selector card into the housing with the printed side of the card facing towards the AC power connector, and the edge marked with the desired voltage first. 7 If changing from 100V or 120V to 220V or 240V, or vice-versa, change fuse(s) and fusing arrangement as described under "Fuses" 8. Replace compartment cover. Verity the indicator pin shows the desired voltage.SECTION 2 ‘serurh.puw 12/21/92 2.2 FUSES FOR CONTINUED PROTECTION AGAINST THE RISK OF FIRE, REPLACE FUSES ONLY WITH THE TYPE AND RATING SPECIFIED. Fus cement 2.2.1 In North America and other locations where the AC supply voltage is 1 120V/60Hz, replace the fuse only with Type AGC, 4" x 14", Fast-Acting, 250 Volt, 1 Amp fuse as per Figure 2.3 below. 2.2.2 In Europe and other locations where the AC supply voltage is 220 - 240V/50Hz, there are two fuses - wone on Line and one on Neutral. Either of these fuses should be replaced only with a Type GDB, Smm x 20mm, Quick-Acting (F), Low Breaking Capacity, 250 Volt, .50 Amp fuse as per Figure 2.4 below. NOTE: When preparing the unit for use on European or other 220 = 240V/S0Hz AC lines, the fusing arrangement must be changed in order to fully protect the instrument. 2.2.3 To change from the North American to the European fusii arrangement; : Refer to Figure 2.5 below for details. Turn the unit off and remove the Ac line cord from the AC power connector. Remove the cover of the fuse/voltage select compartment using a small screwdriver or similar tool. Loosen the Phillips screw 2 turns. Remove fuse block by sliding up, Figuce 2.8 = worth saarican to then away from the PHillips otopaen fase conversion screw, and lifting up from the pedestal. 8. Invert the fuse block and install the .50 Amp GDB fuses in both the upper (Hot) and lower (Neutral) holders. Slide the fuse block back onto the Phillips head screw and pedestal. 7, Tighten the Phillips head screw. 8. Replace the cover.SECTION 2 RAM EXPANSION User RAM in the D2000 may be expanded with the installation of SIMMs (Single In-line Memory Modules) in pairs. SIMs for the 2000 must be 30 pin, 8 bit, and 120ns or faster, with maximum dimensions not exceeding 3.5" wide x 2.2" high x .25" thick - SIMMs with ICs on both sides are not supported. The following memory sizes are supported: 256KBx@ DM x 8 om x 8 16mm x 8 Installation of SIMMa: Turn the unit off and remove the AC line cord from the AC power connector. Open the unit as described in Section 3, "Disassembly". Locate the SIMM sockets on the Engine board (Figure 2.6). There are two banks of SIMM sockets, the two inner sockets are Bank A and the two outer sockets are Bank B. When installing one bank (2 SIMMs), install the SIMs in the Bank A sockets. When installing two banks (4 sits) of different sizes, make certain the 2 SIMMs in iguee 2:6 - tegine Board meaoey the Bank A sockets are the same size, and the 2 in the Bank B sockets are the same see ae size. Insert a SIM into the proper socket at a 60 angle (Figure Eater é 2.7). Press the SIM firmly into the socket until it clicks pA ee into place. fF fin ni Pull the latches on each end oo i sen-asume ee Pa of the socket outward, rotate “*" “gems |S} the SIMM to a vertical position, and release the latches. Repeat steps 3 - 5 to install remaining SIMs. once all SIMMs have been inserted, inspect for proper installation - make sure the top edges of all like SIMMs are at the same height and parallel to the printed circuit board. Close the unit as described in Section 3. To verify the SIMs are functional: Plug in the power line cord, and turn the unit on. After the K2000 has initialized, press the "DISK" button. Confirm the "Samples: ####K" figure displayed in the center of the status bar corresponds to the total amount of user RAM just installed.SECTION 2 semr.nm 21/06) Changing System Software (Engine) ? The ICs containing the K2000's software are static sensitive devices. USE ALL STANDARD ANTI-STATIC PRECAUTIONS WHEN HANDLING THESE DEVICES! To replace the ICs: turn the unit off and remove the AC line cord from the AC power connector, Open the unit as described in Section 3. Locate the old software ICs U3 and U6, on the Engine Board (Figure 2.6 above). Remove the old ICs using an IC puller or similar tool. Be careful not to damage the traces on the board. Carefully insert the new Ic labeled "LO" in the socket at U3, and the new IC labeled "HI" in the socket at U6. Make certain the ICs are oriented with pin 1 toward the front of the unit. Pin 1 is on the end of the IC with the indentation. Inspect for proper installation - make sure the ICs are firmly seated into the sockets and that none of the pins are bent. Blose the unit as per the instructions in Section 3. Always HARD RESET the instrument after changing the software. Note that all user data in RAM will be erased. A hard reset can be performed on power-up by pressing and holding the "1", '2" and "3" buttons on the numeric keypad.