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BYOC Vibrato BA662A Instructions Manual

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BYOC Vibrato Kit Instructions
BA662A version
Please read these instructions very thoroughly before
building even if you are an experience builder. Because of
the layout, there is a certain order which must be followed.
1. Schematic..................................................2
2. Parts list....................................................3 - 4
3. Populating the circuit board....................5 - 11
4. Assembly...................................................12
5. Wiring.......................................................13 - 14
6. Finishing up..............................................15
©2006 Build Your Own Clone

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Summary of Contents for BYOC Vibrato BA662A

  • Page 1: Table Of Contents

    BYOC Vibrato Kit Instructions BA662A version Please read these instructions very thoroughly before building even if you are an experience builder. Because of the layout, there is a certain order which must be followed. 1. Schematic..........2 2. Parts list............3 - 4 3.

  • Page 3: Parts List

    PARTS CHECKLIST (BA662A Version) RESISTORS: Some kits may come with 1%metal film (light blue) or 5%carbon film(light brown) 1 - 100ohm (brown/black/black/black/brown) or (brown/black/brown/gold) 3 - 1k (brown/black/black/brown/brown) or (brown/black/red/gold) 1 - 2.7k (red/purple/black/brown/brown) or (red/purple/red/gold) 4 - 4.7k (yellow/purple/black/brown/brown) or (yellow/purple/red/gold 1 - 6.8k (blue/gray/black/brown/brown) or (blue/gray/red/gold) 1 - 7.5k (purple/green/black/brown/brown) or (purple/green/red/gold) 1 - 8.2k (gray/red/black/brown/brown) or (gray/red/red/gold)
  • Page 4 1 - 10k trimpot 1 - 500k trimpot 1 - B50k (depth) 1 - A250k (rise time) 1 - C250k (rate) SWITCHES: 1 - 3PDT footswitch 1 - SPST momentary footswitch 1 SPDT toggle switch MISC.: 4 - DIP8 sockets 1 - SIP9 socket 1 - predrilled enclosure w/ screws 1 - ready to solder circuit board...

  • Page 5: Populating The Circuit Board

    Populating the circuit board Step1: install all the diodes. Make sure the black stripe is facing the same direction as the stripe on the layout. Step 2: Install all the resistors. Resistors are non-polarized so it makes no difference which direction your orientate them.
  • Page 6 Step3: DO NOT SOLDER THE ICs!!!!!!!!Only solder the sockets. Make sure the u-shaped notch on the socket lines up with the notch on the layout. You will install the ICs into the sockets when you are ready to test the pedal. Step 4: install the trimpots.
  • Page 7 Step5: install the first 4 transistors (Q1 - Q4) These are the BC550. Step 6: install the next 5 transistors (Q5 - Q9). These are the 2SC945. The transistors will probably only be labelled C945.
  • Page 8 Step7: Install the last transistor - Q10. This is the 2SA733 but will probably only be labelled A733. Step 8: Install the aluminum electrolytic capacitors. This are polarized and should be orientated a certain way. The positive end will have the longer lead and should go in the hole with the square solder pad.
  • Page 9 Step 9: Install the 6.8uf tantalum cap. This cap with either be blue or yellow and look bulbous or dipped . It is polarized as well. The positive end should be labelled with ++ markings and that lead goes in the square solder pad. Step 10: Install the ceramic disc caps.
  • Page 10 Step 11: install the film caps. These are not polarized and can go in either direction. Step12: DO NOT SOLDER the BA662A!!!! Only solder the SIP9 socket. And make sure you solder it to the UNDERSIDE of the board. Install the Chip into the socket when you are ready to test the pedal.
  • Page 11 Step 13: Add the 1/4 jacks. Both are stereo, so it makes no difference which is in or out . MAKE SURE YOU SOLDER THEM TO THE UNDERSIDE OF THE BOARD!!!! Step 14: DO NOT SOLDER!!!!!!!!!!!!!!!!!!!!!!Only insert the LED into it's place on the underside of the circuit board but do not solder it.

  • Page 12: Assembly

    Assembly 1. Install the SPDT toggle switch VERY IMPORTANT!!!! Take off the extra bold and washer from the inside of the brushing so that there is only one bolt and one washer (the serated washer) on the outside of the enclosure on the body of the switch is flush against the inside of the enclosure.

  • Page 13: Wiring

    Wiring 1. Make these wiring connections on underneath the board. Also keep in mind that these wires should be very short. They are shown here as being relatively long for illustration purposes.
  • Page 14 2. Look at the yellow wire. This is the chassis ground wire . Because all of the jacks are plastic, the circuit ground is isolated from the chassis. This can cause some grounding noise when you press the metal footswitches. Connecting the circuit ground to the chassis will eliminate this.

  • Page 15: Finishing Up

    Finishing Up 1. Test the pedal to make sure it works properly before you solder the LED. 2. Add all the IC's to their sockets. The DIP8 ICs may have a u-shaped notch. If they do, match them up with the notch in the socket that should also be matched up with the layout. If there is no notch, then there should be a small dot in the corner of the IC that denotes pin 1.