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PMFoundations ER-808 Assembly Manual

Touch bus pcb
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ER-808 – Assembly Guide
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PM Foundations ER-808 v1.4
Touch Bus PCB
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Page 1 of 16

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Summary of Contents for PMFoundations ER-808

  • Page 1 ER-808 – Assembly Guide _____________________________________________________________________________________ PM Foundations ER-808 v1.4 Touch Bus PCB _____________________________________________________________________________________ Page 1 of 16...
  • Page 2 ER-808 – Assembly Guide _____________________________________________________________________________________ Introduction This guide is for the Touch version. If you are building the Button Version of the Drum Machine, please refer to the Button Bus PCB manual. Since the Bus PCB is common to this and the Button version, there are many unused locations. Please follow this guide and install ONLY the parts listed in the BOM for the Touch version.
  • Page 3 ER-808 – Assembly Guide _____________________________________________________________________________________ Solder and clip the leads. Use a minimum amount of solder for resistors where other parts will be soldered on top of them and cut the leads as close as possible to the PCB. SMD ICs Apply flux to the SMD pads.

  • Page 4: Power Socket

    ER-808 – Assembly Guide _____________________________________________________________________________________ IC Socket Install the socket on the TOP of the board. Observe the notch or mark on the socket and align with the notch or mark on the board. Solder. Panel headers Install the three 6 pin right angle bus socket on the TOP of the board.
  • Page 5 ER-808 – Assembly Guide _____________________________________________________________________________________ Module headers Install the 20, 10 and 16 pin straight control plugs on the TOP of the board. These must be installed with the correct orientation or the module will be damaged when the power is connected.
  • Page 6 ER-808 – Assembly Guide _____________________________________________________________________________________ _____________________________________________________________________________________ Page 6 of 16...
  • Page 7 ER-808 – Assembly Guide _____________________________________________________________________________________ Ceramic and film capacitors Install the capacitors on the TOP (1) and BOTTOM (6) of the board. Solder and clip the leads. Do not melt the headers when soldering the capacitors. Tantalum capacitors Install on the TOP. Make sure you orient correctly. The longer lead and/or the lead marked with a + needs to be inserted into the hole that has the “+”...
  • Page 8 ER-808 – Assembly Guide _____________________________________________________________________________________ Place the bus board on to the panel at right angles so that the headers face towards the top edge of the panel and the LEDs rest in the 16 holes in the panel. Solder two opposite pins of each male header onto the panel. The lower pins can be reached through the slots in the bus PCB.
  • Page 9 ER-808 – Assembly Guide _____________________________________________________________________________________ _____________________________________________________________________________________ Page 9 of 16...
  • Page 10 ER-808 – Assembly Guide _____________________________________________________________________________________ Carefully lift the bus PCB off the panel, separating the male and female headers and leaving the male headers on the panel. _____________________________________________________________________________________ Page 10 of 16...
  • Page 11 ER-808 – Assembly Guide _____________________________________________________________________________________ _____________________________________________________________________________________ Page 11 of 16...

  • Page 12: Initial Testing

    ER-808 – Assembly Guide _____________________________________________________________________________________ Touch up the solder joints on the panel. Initial Testing  Gather the completed Accent, Main/Control and Bus PCBS.  Do not install the ICs yet.  Install the Main/Control module to the bus in the first position marked " Control"...
  • Page 13 ER-808 – Assembly Guide _____________________________________________________________________________________  2: between 0 and 3.3  3: 3.3  4: 0.3  5: 0.3  6: 0  7: 0  8: 0  9: 0  10: 0  11: 0  12: 0 ...
  • Page 14 ER-808 – Assembly Guide _____________________________________________________________________________________  27: 0  28: 3.3  If these tests fail, stop and diagnose the problem before installing the ICs.  Install the ICs in the Accent and Control modules and the IC into the Bus PCB ...
  • Page 15 ER-808 – Assembly Guide _____________________________________________________________________________________  Assemble the main /accent sub module into the bus. Ensure that it is facing the correct way around with the buttons facing the front of the bus. It will fit in reverse but this will damage the modules.
  • Page 16 ER-808 – Assembly Guide _____________________________________________________________________________________ 3. Press TRACK button. The mode LED should toggle on and off. Set the TRACK button so that the MODE LED is off. 4. Press ACCENT button. It should light and stay on. 5. Press any step button. The step LED should light.