Wersi CD 600 Assembly Manual Download Page 1

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AM 320-01-808

assembly manual

Technical Data

CD 600/700/800/900

AM 320 1st Edition

Summary of Contents for CD 600

Page 1: ...AM 320 01 808 1 assembly manual Technical Data CD 600 700 800 900 AM 320 1st Edition ...

Page 2: ...AM 320 01 808 2 ...

Page 3: ...Drums 28 6 DH 11 Digital Reverb Unit 12 Bit 32 7 DH 100 Digital Reverb Unit 16 Bit 36 8 IF 40 Analog and Digital Control 40 9 EF 40 Effects and Routing 44 10 WV 30 Wersivoice 48 11 AF 40 Audio Board 52 B Control Panels 56 1 KD 11 Manual Board 56 2 KD 2 KD 4 Manual Extension Boards 56 3 Pedalboard 56 4 CB 41 CB 42 CB 43 Main Control Panels Left Center Right 64 5 EM 1 External Memory 72 6 CB 40 Pote...

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Page 5: ... instrument is played and are assigned to the desired instrument range according to a clock frequency controlled from the keyboard A digital to analog converter changes the digital data back into audible analog tones The tones sound rather genuine when played in the tonal range of the original instrument however the tones become less and less true the further the player deviates from this range Th...

Page 6: ...this information to one of the slave SL5 units It is here that the tone is actually produced The tone after leaving the slave may receive additional analog effects Wersivoice VCF etc as desired The master MST8 is supported in its work by the co master COl which monitors the volume controls and drawbars as well as controlling the rhythm unit and managing the MIDI and RS 232 interfaces ...

Page 7: ...AM 320 01 808 7 Block Diagram CD Series ...

Page 8: ...located on the slave According to the information it receives from the master the slave then produces the sounds The output of the sounds is done automatically by the timer the DMA controller and the slave CPU after the CPU has made the correct timer and DMA settings The CPU is responsible only for the amplitude envelope for the 8 components Each of the B Digital to Analog Converters DAC receives ...

Page 9: ...ny modification b the Mellow slave signal is routed to the amplifier via a low pass filter c the WV1 slave signal is assigned to Wersivoice 1 d the WV2 slave signal is assigned to Wersivoice 2 e VCF further processing of the signal for VCF effects The effect channels WV1 WV2 and VCF can be individually assigned to the left or right audio channel the mellow bright channels however are permanently r...

Page 10: ... a processor supported Real Time System its CPU controls the A conversion the digital delay and the D A conversion The master controls the reverb modes It receives its signal from and sends the reverberated signal to the preamp 6 Connection Panels The main connection panel CB45 is equipped with three audio outputs Headphones Audio left Audio right Tape With the additional connection panel CB46 you...

Page 11: ...t connects the boards electrically it carries all connectors for connecting the periph eral modules via ribbon cables The following figures show the edge connector pin layouts the male connector pin layouts and the circuitry on the MB 40 Tip For testing or troubleshooting a plug in board pull out the desired card from the card rack insert the extender card EXT 1 0 testing adapter into the slot of ...

Page 12: ...AM 320 01 808 12 Backplane board MB4O edge connector pin layout view from back of card rack ...

Page 13: ...AM 320 01 808 13 MB4O Male connector pin layout ...

Page 14: ...AM 320 01 808 14 MB4O Component layout ...

Page 15: ...AM 320 01 808 15 MB4O Schematic diagram ...

Page 16: ... would cause the complete loss of the memory contents As displayed in the Memory Map IC 2 PAL 16L8 IC 9 HC138 and IC 3 HC139 are responsible for the dis tribution of the memory areas into RAM ROM I O etc The banking in the lower 16 k of the CPU address region is controlled by the bank latch IC 6 HC273 the higher outputs of which BS4 B56 are decoded by IC 1 To integrate parts of the SYSROM IC 15 in...

Page 17: ...AM 320 01 808 17 MST8 Component layout ...

Page 18: ...AM 320 01 808 18 MST8 Schematic diagram ...

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Page 20: ...e bus and vice versa so that both processors have permanent access to the RAM After loading the RAM by the master the slave CPU starts and works off the internal program By programming the timer IC 23 9513 the readout rate is determined Four timers determine the pitch read out rate of the sound parameter lists and the fifth timer determines the repeat frequency for computing the envelope curve Via...

Page 21: ...AM 320 01 808 21 5L5 Component layout ...

Page 22: ...AM 320 01 808 22 SL5 Schematic diagram ...

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Page 24: ...and program a large portion can be accessed to by banking This is done by the bank latch 1C7 HC174 in combination with the PAL IC 6 256 bytes from the 32 k program area are for I O IC 1 IC 2 IC 3 HC138 is responsible for decoding in the I O area The timer IC 12 produces the necessary interrupts for the system software and the clock for the ACIA IC 4 The ACIA is the serial interface of the organ an...

Page 25: ...AM 320 01 808 25 C0l Component layout ...

Page 26: ...AM 320 01 808 26 C0l Schematic diagram ...

Page 27: ...AM 320 01 808 27 ...

Page 28: ...ernal 32 bit data processing One interface to the outside world is the 16 bit Input Port IC 27 IC 28 which receives the drums trigger signals sent to the DSP 160 from the organ These trigger signals determine which drum instrument is to be started as well as its volume level The second interface to the outside is the digital analog converter IC 6 which is connected to the CPU via the latches IC 1 ...

Page 29: ...AM 320 01 808 29 DSP 160 Component layout Note Layout shown is DSP 16 DSP 160 has an additional IC 30 ...

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Page 32: ...12 bit code of the ADC results in reverb times of up to 4 seconds CPU and RAM have a bandwidth of 16 bit The complete signal 12 bit again is again split up into 2 bytes and routed to the digital analog converter DAC 1230 IC 12 This converter produces an output current which represents the digital value This current is converted into a voltage potential by IC lSc TL 084 which still has amplitude ju...

Page 33: ...AM 320 01 808 33 DH11 Component layout ...

Page 34: ...AM 320 01 808 34 DH 11 Schematic diagram ...

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Page 36: ...guarantees that the input signal is kept at a con stant level while the AID converter IC 13 converts the analog signal into digital information The converter translates the analog input signal 1 10 volt into a digital value with a resolution of 65535 steps With a sampling rate of 28 kHz this value is sent to the CPU IC 4 via the input latches IC 6 and IC 9 After processing computing the reverb the...

Page 37: ...AM 320 01 808 37 DH 100 Component layout ...

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Page 40: ... digital form and are converted into a corresponding voltage potential This voltage potential is routed to the correct output by the de multiplexer IC 13 4051 which is controlled by IC 14 HC 174 is stored in a Sample Hold and adjusted to the correct voltage level The remaining board consists of 5 output ports IC 6 IC 8 IC 15 and IC 16 which generate the control signals as well as an input port IC ...

Page 41: ...AM 320 01 808 41 IF 40 Component layout ...

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Page 44: ...W1 or VOLPW2 In the case of WV1 the VCF signal may also be added via R 14 C 69 With the switch IC B and IC 7 following the OPAMP IC 3 and IC 2 the WV signal can be routed to an external Leslie W1 LES W2 LES or the PC Board WV 30 The output signal of the Wersivoice which is present at pin C 4 or pin C 5 of plug PL 1 is routed individually to the organ channels left and right with the switches IC 13...

Page 45: ...AM 320 01 808 45 EF 40 Component layout ...

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Page 48: ...angle voltage signals which are dis placed to each other by 1200 LFO 2 has a frequency of 6 Hz and generates three sine wave signals which are also displaced to each other by 120 Rotation Leslie effect LFO 1 has a frequency of either 0 6 or 6 Hz vibrato fast slow LFO 2 is off The Deep and Flat switches are effective on the audio path Deep being a feedback process amplification of the respective ef...

Page 49: ...AM 320 01 808 49 WV 30 Component layout ...

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Page 52: ...ce is that the control signal of the VCA IC 3 consists of the control voltage VOLRH and a small portion from the swell pedal The reverb summing amp leads the organ rhythm signal to the reverb board DH 11 where the signal is reverberated and via lines REV 1 and REV 2 sent back to the AF 40 This signal s amplitude is controlled by IC 7 and added to the original signal via R 39 R 40 The organ rhythm ...

Page 53: ...AM 320 01 808 53 AF 40 Component layout ...

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Page 56: ...n or off the second contains the dynamic value When the dynamic value is recorded a flip flop IC 8 is set which triggers a FIRO at the master When reading the port only the key IC 5 is read which has the FIRO in its upper bit via IC 4 pin 13 Thus it can be determined whether it has actually been this manual that triggered the FIRQ request If this is true the dynamic value can be read while the FIR...

Page 57: ...AM 320 01 808 57 pedal KD 11 Component layout ...

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Page 60: ...AM 320 01 808 60 KD 11 b Schematic diagram ...

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Page 62: ...AM 320 01 808 62 KD 4 Schematic diagram ...

Page 63: ...AM 320 01 808 63 PK 40 Schematic diagram Pedalboard matrix ...

Page 64: ...ate LEDs are arranged in 5 groups with 24 switches each If no switch is depressed both the SENSE and the KD output of the respective pair of comparators are set to 5 V A momentary switch closure results in a Sense and KD pulse which is applied to the CPU s data bus This sense pulse occupies a specific time slot in the CPU s sequence program and instructs the CPU to initiate the function for that t...

Page 65: ...AM 320 01 808 65 CB 41 Component layout ...

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Page 68: ...AM 320 01 808 68 CB 42 Schematic diagram ...

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Page 70: ...AM 320 01 808 70 CB 43 Schematic diagram ...

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Page 72: ... External Memory This board is the interface to the external memory card The data bus driver IC 1 HC245 feeds through the data of the Mem Card to the master data bus as soon as access to them is required EM 1 Component layout ...

Page 73: ...AM 320 01 808 73 EM 1 Schematic diagram ...

Page 74: ...co master writes in IC 1 HC 174 The multiplexed analog output of IC 8 goes to an Analog to Digital Converter located on the CO 1 board 7 CB 48 VCF Touch Glide On this board the signal of the two touch sensors is processed IC 1 and converted into a voltage between 0 and 4 V And with the two potentiometers the voltages for VCF and Glide are produced 8 DR 409 DR 410 Drawbar Board The drawbar potentio...

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Page 76: ...AM 320 01 808 76 CB 40 Schematic diagram ...

Page 77: ...AM 320 01 808 77 CB 48 Component layout CB 48 Schematic diagram DR 410 Schematic diagram DR 409 Schematic diagram ...

Page 78: ...AM 320 01 808 78 9 CB 44 CB 49 Rhythm Control Panels These rhythm control panels have the same functions as the boards CB 41 CB 43 However they are connected to CO 1 ...

Page 79: ...AM 320 01 808 79 CB 49 Schematic diagram ...

Page 80: ...AM 320 01 808 80 CB 44 Schematic diagram ...

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Page 82: ...age UOUT The magnetic energy forcibly absorbed from the transformer during the make phase represented by the hatched magnetization current component of the switching circuit Is is undesired for the operation of the circuit It must be absorbed by suitable means transmitted back to DC source U or otherwise utilized Thus the voltage at the transformer or the switch Us is at the same time restricted L...

Page 83: ...p is added to the current ramp and thus guarantees stable no load operation however it also limits the maximum make to break ratio via comparator IC 3a and Q 3 to approximate 0 6 Another feature of the control IC must be mentioned It exhibits Schmidt trigger behavior relative to its supply voltage pin 7 These thresholds are about 16 V and 10 V This means that over 16 V it begins functioning and be...

Page 84: ...AM 320 01 808 84 PS 21 Component layout ...

Page 85: ...AM 320 01 808 85 PS 21 Schematic diagram ...

Page 86: ... the computer if not set this pin at 12 V The board sends MIDI OUT and RS 232 simultaneously 3 CB 46 Additional Connection Board On this board there are some additional audio outputs and a Leslie control circuit This circuit recognizes whether a Leslie is hooked up via the 15 pin Sub D socket and sends this information to the master via LESINS The master switches the instruments routed via WV to t...

Page 87: ...AM 320 01 808 87 CB 45 Component layout CB 46 Component layout ...

Page 88: ...AM 320 01 808 88 CB 45 Schematic diagram ...

Page 89: ...AM 320 01 808 89 CB 46 Schematic diagram ...

Page 90: ... 4 MP 10 Microphone Amplifier This board carries the microphone amplifier and the tone control The portion to be reverberated can be adjusted with the reverb potentiometer MP 10 Component layout MP 10 Schematic diagram ...

Page 91: ...plifier to the loudspeakers only if the following pre conditions are given 1 the supply voltages of the amplifier are present 2 no DC voltage is at the amplifier outputs 3 the switch on circuit of the power supply opens the amplifier output PAOF F The switching on will be delayed C 13 R 21 to avoid amplification of start up noise and power surges generated by the organ PA 106 Component layout ...

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Page 93: ...e swell pedal 05 3 loudspeaker and relay board RS 1 7 RS 1 Relay Board In the stand by mode green LED in on off switch is illuminated this board supplies the organ with the BATT voltage and switches via the AC line relay the entire organ on or off when the on off switch is depressed 8 OS 3 Swell Pedal Footswitch This board has two footswitch connections as well as the reflex coupler which supplies...

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Page 95: ...AM 320 01 808 95 Power chassis NE 60 schematic diagram ...

Page 96: ...AM 320 01 808 96 Power Connections ...

Page 97: ...AM 320 01 808 97 Memory Map NST8 ...

Page 98: ...or audio Display A visual indicator used as a means to read out digital data EPROM Erasable programmable read only memory see ROM a ROM capable of storing new data existing data can be erased and new data can be read into the ROM Hardware The components which make up the computer proper the electronics control devices readouts etc The hardware carries out the com puter functions in accordance with...

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