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Wersi DX 400 Assembly Manual

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assembly manual
Technical Data
DX 400/500
AM 334 1st Edition
AM 334-01-502
1

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Summary of Contents for Wersi DX 400

  • Page 1 Technical Data DX 400/500 AM 334 1st Edition AM 334-01-502...
  • Page 2 AM 334-01-502...

  • Page 3: Table Of Contents

    CB 23 - Rhythm CB 25 - VCF, Glide, Touch Vibrato KD I - Key Contact Board KD 2 - Key Contact Board (DX 500 only) KD 4 - Key Contact Board (DX 400 only) Ill. Peripheral PC Boards PCBoardsCB24andSTl5...

  • Page 4: Purpose Of The Manual

    A PURPOSE OF THE MANUAL This manual, part of the DX 400/500 manual series, The technical data is presented in a manner that is aimed complements the other manuals in the series by presenting more at the interested layman than the electronic specialist.

  • Page 5: Ill. The Dx System Block Diagrams

    synthesizers to conventional musical instruments are Each slave generates as many as four free-programmable possible through software. complex voices, each with two simultaneous sound com- ponents. The coordination of these, via the master processor, A further advantage of this system is that a given sound can arbitrarily stem from the upper manual, lower manual, quality, once achieved and filed as software, will be the auto-accompaniment or pedals.
  • Page 6 Fig. 1: Block diagram of the DX 400/500 organ series At the same time, the envelope control DAC (left, Fig. 2) Superdeemphasis (superlowpass) - For bass converts digital data to envelope control voltages for the voices, eight voice components. The 8-channel multiplex sample Deemphasis (lowpass) channel - For "round"...
  • Page 7 Fig. 2: Block diagram of a slave processor 4. Digital Rhythm Instruments The digital reverb functions as a processor-supported "real Although the functional sequencing of the rhythm and time" system, whose CPU controls the analog-to-digital accompaniment is completely controlled by the master CPU, (ADC) conversion, the digital display and the digital-to- the actual sound generation takes place on the instrument analog (DAC) conversion.
  • Page 8 Fig. 3: Block diagram of the audio section AM 334-01-502...

  • Page 9: Schematic Diagrams

    C. SCHEMATIC DIAGRAM In this chapter you will find detailed schematic diagrams, The accompanying table shows the pin layout of the edge principles of operation and useful notes on adjustments and connectors on the MB 30; these are the access points to the tests.
  • Page 10 BACKPLANE BOARD MB 30, EDGE CONNECTOR PIN LAYOUT, VIEWED FROM SIDE A AM 334-01-502...
  • Page 11 Backplahe board MB 30, plug layout AM 334-01-502...

  • Page 12: Plug-In Board Ps 12 - Power Supply

    04 functions as a switch transistor. It is driven by 02 and Q3, 2. Plug-in Board PS 12 - Power Supply which are in turn driven by ICi. When 04 is switched The plug-in board PS 12 develops all the voltages through, memory choke Li builds up a field and electrolytic required to run the DX series organs: capacitor C16 charges up until the output voltage (pins...
  • Page 13 Fig. 4. Plug-in board PS 12, component layout and functions AM 334-01-502...
  • Page 14 Fig. 5: Plug-in board PS 12, schematic diagram AM 334-01-502...

  • Page 15: Plug-In Board Af 12 - Preamplifier

    3. Plug-in Board AF 12 - Preamplifier amplified by the four sections of 1C3. The gains of 1C2's amplifiers are dependent on a DC control current from Q3 Plug-in board AF 12 contains analog processing circuitry for applied to pins 1 and 16. This control current, in turn, is all the organ's audio tone signals as well as tone signals from dependent upon the position of the swell pedal (pin 23);...
  • Page 16 Fig. 6: Plug-in board AF 12, component layout and functions AM 334-01-502...
  • Page 17 This Page is Intentionally Blank AM 334-01-502...
  • Page 18 Fig. 7: Plug-in board AF 12, schematic diagram AM 334-01-502...
  • Page 19 AM 334-01-502...

  • Page 20: Plug-In Board Dh 10 - Digital Reverb

    The processing circuits for the reverb work similarly. All the The digital information (data) from the CPU feeds via a 16- signals which are to be reverberated are sent via IC5c to the bit bus into 1C7, a 2K x 8 random-access memory (RAM), reverb unit DH 10 (Fig.
  • Page 21 Fig.8: Plug.in board DH 10 component layout and functions. AM 334-01-502...
  • Page 22 Fig. 9: Plug in board DH10 , schematic diagram AM 334-01-502...
  • Page 23 AM 334-01-502...

  • Page 24: Plug-In Board Ef 20 - Special Effects, Analog Portion

    5. Plug-in Board EF 20 ---Special Effects, Analog Portion Principles of Operation The processed signal appears at pin 14 of 1C14 The Fig. l0 shows the component layout of the EF 20 special signal is switched to either pins 3 or pins 4 (edge con- effects board;...
  • Page 25 Fig. 10: Plug-in board EF 20, component layout and functions AM 334-01-502...
  • Page 26 Fig. 11: Plug-in board EF 20, schematic diagram AM 334-01-502...
  • Page 27 AM 334-01-502...

  • Page 28: Plug-In Board Ef 19 - Special Effects, Digital Portion

    6. Plug-in Board EF 19 ---Special Effects, Digital Portion Principles of Operation b) R5232 Interface Plug-in board EF 19 contains three interface circuits: 1C9, a special RS232 interface IC, converts 8-bit parallel master/special effects, organ/computer (RS232) and data words into serial data and vice-versa, depending organ/cassette.
  • Page 29 Fig. 12: Plug-in board EF 19, component layout and functions AM 334-01-502...
  • Page 30 Fig. 13: Plug-in board EF19, schematic diagram AM 334-01-502...
  • Page 31 AM 334-01-502...

  • Page 32: Plug-In Board Dds 3 - Rhythm

    Plug-in Board DDS 3 - Rhythm Fig. 14 shows the component layout of plug-in board These sounds appear at output pins 12 thru 19 of 1C9 DDS 3; refer to Fig. 15, the schematic diagram, for the as momentary digital data in multiplexed form. The following description.
  • Page 33 Fig. 14: Plug-in board DDS 3, component layout and functions AM 334-01-502...
  • Page 34 Fig. 15: Plug-in board DDS3, schematic diagram AM 334-01-502...
  • Page 35 AM 334-01-502...

  • Page 36: Plug-In Board Sl 3 - Slave Processor

    If, for example, you wish to test Slave 3, press R. 8. Plug-in Board SL 3 - Slave Processor Fig. 16 shows the component layout of plug-in board SL 3; e) Select the voice: Fig. 15 is the schematic diagram. Again, press one of the five switches: The following test enlarges upon the initial test of the slave processor in the assembly manual, enabling you to...
  • Page 37 Fig. 16: Plug-in board SL 3, component layout and functions AM 334-01-502...
  • Page 38 Fig. 17: Plug-in board SL3, schematic diagram AM 334-01-502...
  • Page 39 AM 334-01-502...
  • Page 40 Fig. 18: Plug-in board MST 3, component layout and functions AM 334-01-502...
  • Page 41 This Page is Intentionally Blank AM 334-01-502...
  • Page 42 Fig. 19: Plug-in board MST 3, schematic diagram AM 334-01-502...
  • Page 43 AM 334-01-502...

  • Page 44: Control Panels

    II. Control Panels The following pages contain schematic diagrams of the Every eight contacts are assigned to a matrix address. For control panel PC boards CB. . . which include slide controls, five octaves (61 keys), eight matrix addresses are necessary. switches and drawbars, and key contact boards KD.

  • Page 45: Cb 20/27/28 - Slide Controls, Drawbars

    Fig. 20: Control boards CB 20, 27, 28 (slide controls, drawbars), schematic diagram AM 334-01-502...

  • Page 46: Cb 21 - Switches, Display

    Fig. 21: Control board CB21 (switches, display), schematic diagram AM 334-01-502...
  • Page 47 AM 334-01-502...

  • Page 48: Cb22-Switches

    Fig. 22: Control board (CB22 switches), schematic diagram AM 334-01-502...
  • Page 49 AM 334-01-502...
  • Page 50 Fig. 23: Control board CB 23 (rhythm CX 4), schematic diagram AM 334-01-502...
  • Page 51 Fig. 24: Control board CB 25 (VCF, Glide) AM 334-01-502...
  • Page 52 Fig 25a: Key contact board KD1, schematic diagram AM 334-01-502...
  • Page 53 AM 334-01-502...
  • Page 54 Fig. 25b: Key contact board KD1, schematic diagram b AM 334-01-502...
  • Page 55 Fig. 26: Key contact board KD 2, schematic diagram (DX 500 only) AM 334-01-502...
  • Page 56 Fig. 27: Key contact board KD4, schematic diagram (DX400 only) AM 334-01-502...

  • Page 57: Peripheral Pc Boards

    "'outside organ model: world" (peripheral) devices such as the swell pedal, a microphone, a tape recorder, headphones, M.I.D.I. or a MP 2: DX 400 Microphone amplifier personal computer. MP 3: DX 400...
  • Page 58 Note: Even with the triac off, there is a small residual ponent designations of each circuit's discrete components are voltage on the transformer primary through the RIC unit shown together (ex., R7/14). (100 Ohms/0.1 uF). This voltage is stepped up by the transformer and goes to the organ electronics, causing some When the LE 30 is first turned on, capacitor C4 charges LEDs to glow dimly.
  • Page 59 Fig. 28: Interface panel CB 24, MIDI circuits AM 334-01-502...
  • Page 60 Fig. 29: Interface panel ST 15, schematic diagram (BETA CP only) AM 334-01-502...
  • Page 61 Fig. 30: Microphone preamp MP 2/MP 3 (BETA S and T only) AM 334-01-502...
  • Page 62 Fig. 31: Microphone preamp MP 2 (BETA S and T only) AM 334-01-502...
  • Page 63 Fig. 32: Microphone preamp MP 4 (DX 500 only) AM 334-01-502...
  • Page 64 Fig. 33: Microphone preamp MP 5 (BETA CP only) AM 334-01-502...
  • Page 65 Fig. 34: Headphone amplifier NIP 6 (BETA CP only) AM 334-01-502...
  • Page 66 Fig. 35: Triac switch TS 5, schematic diagram (not in BETA CP) AM 334-01-502...
  • Page 67 Fig. 36: Power amplifier PA 10, schematic diagram (not in BETA CP) AM 334-01-502...

  • Page 68: Glossary Of Microcomputer Terms

    Display - A visual indicator used as a means to read out digital data. © 1999 Thomas Erlebniswelt Musik This document has been reproduced for the benefit of current owners of WERSI organs. It should not be used for any commercial purposes. AM 334-01-502...

This manual is also suitable for:

Dx 500

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