CV-MIDI Assembly Manual
Contents
1. O PIN 7 PIN 6 pa WIRE HOLE FOR GND ON COMSIQE_OF DATA POT 8 CPU BOARD O WG NJ Oo Printed 5 18 99 01325 PL KIT INTERFACE CV TO MIDI 01325 Type PL Class BOM KIT INTERFACE CV TO MIDI Revision A User2 M Status R User3 Date 5 18 99 Reorder By SPT User5 Item Qty Part Number Type Title Reference Unit Stat Detail 1 1 00054 PS MIDITOOLS RELAY DRIVER REAR each R 1 1X7 75IN 2 4 00097 PS 1K 1 4W 5 each R AXIAL 3 1 00101 12 PL 7X32 STRANDED BLACK 12IN each R AWG24 4 1 00102 12 PL 7X32 STRANDED RED 12IN each R AWG24 5 4 00103 18 PL 7X32 STRANDED YELLOW 18IN each R AWG24 6 2 00106 PS SCREW MACHINE PANHEAD PHILLIPS each R 06 32 7 2 01137 PS NUT KEP each R 06 32 8 1 01139 08 PL BUS WIRE 0 0321IN DIA 8IN each R AWG20 9 4 01293 PS FEMALE STEREO SWITCHED PANEL each R 1 4IN 10 1 01326 PL ASSEMBLY MANUAL MIDITOOLS each R 8 5X11IN PAVO 01325 attn Chris Bartlett 95 Yesler Way Seattle WA 98104 Page 1 of 1 206 682 7223 Fax 206 682 7705 a2. 2 Install 00158 in the sockets for U3 Align the notch on the IC with the notch on the socket Place the IC in the socket carefully so as not to damage any leads Be certain that all IC leads end up in the socket Push evenly until the IC body rests on the top of the socket DO NOT SOLDER E Reference Voltages 1 Each analog voltage must be properly referenced to the CPU board ground The WIRE HOLE FOR GND ON CCW SIDE OF DATA POT provides this reference Do not perform step B5 of the Final Assembly Manual until the rear panel assembly has been completed If you are using the CPU board s 5VDC as a reference for your Control Voltage the hole labeled WIRE HOLE FOR 5V ON CW SIDE OF DATA POT will provide this reference Please note that the MIDItools power supply is rated at 1 amp and that the MIDItools computer uses PAVO 95 Yesler Way Seattle WA 98104 206 682 7223 01326A 2 up 400 m If you are using power from the MIDItools power supply you may need to beef up the CPU board heat sink 2 Skip step G1 of the Rackmount Human Interface Assembly Manual Since channel 1 of the ADC is connected to a rear panel jack the fader potentiometer should not be connected Step G2 may or may not be performed You may want to attach the fader knob for future use or cosmetic purposes IV REAR PANNEL ASSEMBLY Complete these steps just prior to beginning the Final Assembly Read through section B of the Final Assembly Manual to get
3. an overview of the process of mounting the subassemblies Remember to skip steps B1 and B5 of the Final Assembly Manual Use the attached Assembly Diagram as a guide A Attach the switching jacks to the rear panel 1 Remove the washer and nut from the switching jack 01293 and slide the threaded end through one of the holes in the Rear Panel 00054 Slide the washer onto the threaded end on the opposite side of the panel and then screw on the nut to hold the jack in position Do not tighten yet Similarly mount the remaining three jacks 2 Orient the panel so that you are looking at the black plastic jack housings The jacks should appear more towards the top of the panel than the bottom Rotate the jacks so that the chamfered cut corners are oriented to the lower right hand corner 3 Tighten the washers to hold the jacks in this position so they will not rotate B Solder the 1K ohm resistor between the switch and ground of the jacks 1 Bend a 1 K ohm resistor 00097 to 0 4 Solder the resistor between the solder lug on the chamfered corner and the solder lug on the bottom left of the jack C Connect the grounds of the jacks 1 Cut the supplied piece of bus wire 01139 08 in half Thread the wire through the holes of the solder lugs on the chamfered corners of all four jacks Solder the wire to each of the solder lugs Trim any bus wire that sticks out of the far right or left of the ground lugs D Connect the 5VDC
4. are not soldered to the circuit board Instead IC sockets are soldered in their place When solder assembly is finished ICs are pressed in into the appropriate socket lI SET UP YOUR WORK AREA A Your work surface should be well lit and well ventilated B Gather your tools ESD grounding strap soldering iron solder noncorrosive electronics solder wire cutters screwdrivers phillips and pan head pliers wire strippers etc C Prepare ESD grounding protection A typical ESD ground strap is adequate Put the strap around your wrist and clip the other end to the head of a slightly loosened screw of a working grounded AC outlet plate The strap should have an internal 10M ohm or equivalent resistor in series to ground This will safely dissipate any static charge that might otherwise damage your components during assembly and test PAVO 95 Yesler Way Seattle WA 98104 206 682 7223 01326A 1 D Lay out the components Do not remove components from their bags yet Familiarize yourself with the parts list layout diagram and part numbers Notice that the component bags are marked with the item number found on the paris list Also note that the reference designators can be found on the schematic parts list and layout diagram ili CPU BOARD and FINAL ASSEMBLY MODIFICATIONS ZI Since the MIDItools CPU board was originally designed to utilize only one Analog to Digital Converter ADC channel some modifications must be
5. lugs of the jacks 1 Solder the remaining section of bus wire to the four solder lugs on the top of the mounted jacks Trim any bus wire that sticks out of the far right or left of the 5VDC lugs E Attach the rear panel 1 Attach the assembled rear panel to the Rackmount Enclosure 00041 using the supplied 1 2 screws 00106 and kep nuts 01137 Attach the panel to the inside of the enclosure so that the threaded sides of the jacks face out and the resistors are oriented towards the bottom Once the panel is in its proper position tighten the nuts so that the panel is securely fastened PAVO 95 Yesler Way Seattle WA 98104 206 682 7223 01326A 3 F Connect the CV inputs 1 Place the assembled CPU board in the Rackmount Enclosure in the position where it will eventually be mounted refer to the final assembly instructions Do not mount the CPU board yet as you will be soldering the CV inputs to it before final assembly The remaining solder lug on the left side of each jack is the CV input connection Wires will be attached from these lugs to the ADC input points on the CPU board The jack on the far left provides the input for channel 1 the next for channel 2 the third for channel 3 and finally the far right jack supplies the input for channel 4 2 Connect ADC channel 1 Measure a length of the yellow wire 00103 18 provided from the CV lug on the far left to the point on the CPU board labeled WIRE HOLE FOR CENTE
6. made to the CPU board and or the ribbon cable to the Human Interface board to gain access to all four channels Follow the CPU Board Assembly and Final Assembly Manual instructions except for these changes A ADC Channel 1 1 ADC channel 1 is found at pin 3 of U4 of the CPU Board 00029 and is normally connected to the data potentiometer No modifications to the board are needed to access this channel the hole labeled VVIRE HOLE FOR CENTER PINON DATA POT provides the input to this channel Skip steps B 1 and B 5 of the Final Assembly Manual 00116 to leave this point available for connection to the rear panel mount jacks B ADC Channels 2 and 3 1 ADC channels 2 and 3 are located at pin 4 and 5 of U4 and are connected to pins 6 and 7 of socket J6 on the CPU Board Since these points are connected to ground on the Human Interface board via a ribbon cable this connection must be broken before they can be used One of two methods may be chosen to sever this connection The first method involves snipping pins 6 and 7 of J6 before soldering the socket to the CPU board which is step C 3 in the CPU Board Assembly Manual 00117 The second method is to cut the ribbon cable wires 00083 that connect pins 6 and 7 of U4 to the Human Interface board Use whichever approach seems easiest to you C ADC Channel 4 1 ADC channel 4 is easily accessed from pin 1 of socket J5 No modifications are needed to use this channel D EEPROM IC
7. pin 7 of J6 Trim any excess wire not soldered to the pad 5 Connect ADC channel 4 Measure a length of the yellow wire provided from the fourth far right CV lug to pin 1 of J7 Add 2 additional inches to this length and cut the wire Strip V4 off of both ends of the wire and tin Benda loop onto one end of the wire and and attach to the CV lug of jack 4 Close the loop with needle nose pliers and solder the wire to the lug Place the other end of the wire in the pin 1 socket of J5 For permanence a small amount of solder can be used to secure the wire f you plan to use the CPU board for other MIDItools applications you may need to replace this socket if solder is used G Connect the 5VDC lugs to the reference 5VDC source 1 Use the supplied length of red wire 00102 12 to connect the 5VDC lugs to the point on the board labeled WIRE HOLE FOR 5V ON CW SIDE OF DATA POT Strip Va off of both ends of the wire and tin Bend a loop onto one end of the wire and and attach to the 5VDC lug of jack 4 Close the loop with needle nose pliers and solder the wire to the lug Insert the other end of the wire through PAVO 95 Yesler Way Seattle WA 98104 206 682 7223 01326A 4 the hole on the CPU board labeled WIRE HOLE FOR 5V ON CW SIDE OF DATA POT and solder the wire to the pad on the back of the board Trim any excess wire poking through H Connect the ground lugs to ground reference source on the MIDItools CP
8. CV to MIDI Assembly Manual Please read these instructions before beginning any construction of your MIDItools Kit These instructions modify and supplement the CPU Board Assembly and Final Assembly Manuals IMPORTANT NOTES BEFORE BEGINNING Q A Failure to take ESD precautions could permanently damage the components ESD damage is permanent and invisible to the naked eye Zapped parts are terribly difficult to find once they are assembled into your MIDItools Computer Although it is best to always wear your ESD ground strap while assembling your kit all assembly steps that require ESD protection are marked with this symbol in the margin B Many components are polarized This means that they must be installed only in the orientation shown on the layout diagram All assembly steps that pertain to polarized or directional components are marked with this symbol in the margin Incorrect orientation can damage components C This manual may make reference to the TOP BOTTOM LEFT or RIGHT sides of the circuit board These directions correspond to the circuit board held as shown in the layout diagram In other words holding the circuit board with the white text markings right side up D The components bodies are installed on the white text side of the circuit board inside the component outlines The component leads go through the holes in the circuit board and are soldered on the opposite side E Integrated circuits ICs
9. R PIN ON DATA POT Add 2 additional inches to this length and cut the wire Strip V4 off of both ends of the wire and tin Bend a loop onto one end of the wire and and attach to the CV lug of jack 1 Close the loop with needle nose pliers and solder the wire to the lug Insert the other end of the wire through the hole on the CPU board labeled WIRE HOLE FOR CENTER PIN ON DATA POT and solder the wire to the pad on the back of the board Trim any excess wire poking through 3 Connect ADC channel 2 Measure a length of the yellow wire provided from the second CV lug to pin 6 of J6 Add 2 additional inches to this length and cut the wire Strip 1 off of both ends of the wire and tin Bend a loop onto one end of the wire and and attach to the CV lug of jack 2 Close the loop with needle nose pliers and solder the wire to the lug Solder the other end of the wire to the solder pad on the back of the CPU board corresponding to pin 6 of J6 Trim any excess wire not soldered to the pad 4 Connect ADC channel 3 Measure a length of the yellow wire provided from the third CV lug to pin 7 of J6 Add 2 additional inches to this length and cut the wire Strip 4 off of both ends of the wire and tin Bend a loop onto one end of the wire and and attach to the CV lug of jack 3 Close the loop with needle nose pliers and solder the wire to the lug Solder the other end of the wire to the solder pad on the back of the CPU board corresponding to
10. U board 1 Use the supplied length of black wire 00101 12 to connect the 5VDC lugs to the point on the board labeled WIRE HOLE FOR GND ON CCW SIDE OF DATA POT Strip 14 off of both ends of the wire and tin Bend a loop onto one end of the wire and and attach to the Ground chamfered corner lug of jack 4 Close the loop with needle nose pliers and solder the wire to the lug Insert the other end of the wire through the hole on the CPU board labeled WIRE HOLE FOR GND ON CCW SIDE OF DATA POT and solder the wire to the pad on the back of the board Trim any excess wire poking through I Complete Final Assembly 1 Now it s time to complete the assembly of your MIDItools unit Follow the instructions in the Final Assembly Manual 00116 taking care not to loosen or detach any of the wires you have just attached 2 Consult diagrams 1 2 and 3 in the user manual to connect the 14 plugs and CV sources IV INSPECT YOUR WORK Before proceeding take some time to inspect your workmanship Look for and correct the following potential problems solder that bridges two or more traces missed solder joints untrimmed leads incorrect component orientation forgotten parts did you have any leftover components ICs not inserted in sockets properly ICs not oriented properly are all the jumpers installed PAVO 95 Yesler Way Seattle WA 98104 206 682 7223 01326A 5 T NJ O
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