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BYOC Armstrong Twin Instructions Manual

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Armstrong Twin Kit Instructions
Schematic....................................................................
Wiring Diagram.......................................
Finishing up & Trouble Shooting .........................
Copyright 2007 B.Y.O.C

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Summary of Contents for BYOC Armstrong Twin

  • Page 1: Table Of Contents

    Armstrong Twin Kit Instructions Parts Checklist ......page 2 -3 Schematic..............page 4 Populating and mounting the circuit board ..page 5 - 13 Wiring Diagram......... ..page 14 Finishing up & Trouble Shooting ......page 15 Copyright 2007 B.Y.O.C...

  • Page 2: Parts Checklist

    Parts Checklist for The Armstrong Twin Kit Resistors: 1 - 1.5k (brown/green/black/brown/brown) 1 - 2.4k (red/yellow/black/brown/brown) 1 - 4.7k (yellow/purple/black/brown/brown) 1 - 6.2k (blue/red/black/brown/brown) 4 - 10k (brown/black/black/red/brown) 1 - 18k (brown/gray/black/red/brown) 2 - 22k (red/red/black/red/brown) 1 - 47k (yellow/purple/black/red/brown)
  • Page 3 1 - A100k audio taper 1 - 10k trimpot Hardware: 1 - armstrong twin circuit board 1 - enclosure w/ 4 screws 1 - 3PDT footswitch 1 - SPDT on-off-on toggle switch 1 - rotary switch 1 - Stereo Jack...

  • Page 5: Populating And Mounting The Circuit Board

    Populating the circuit board Step 1: Add the diodes. The two 1N914 will be the smaller of the three types of diodes and orange in color. The 1N4001 will be black with a silver stripe. The 1N34A will most likely be clear with a green stripe. Make sure you line up the srtipe on each diode with the stripe on the PCB layout Step 2: Add the resistors.
  • Page 6 Step 3: Add the dual op amp. Your op amp should have a u-shaped notch on one end. You should match up this notch with the notch on the layout. Step 4: Add a 10k trimpot. Your trimpot will only have 3 leads. The PCB will have more than 3 holes so that it can accomodate a variety of brands of trimpots, but there is only one way that your trimpot will fit in the board.
  • Page 7 Step 5: Add the transistors. Make sure you line up the rounded side of the transistor with the rounded side of the layout. Make sure you place the two 2N5088's in their correct spot. Make sure you place the MPS6523 in the correct place. Make sure ypu place the two 2N5457's in their correct spot.
  • Page 8 Step 7: Add the electrolytic capacitors. These are polarized. The positive lead will be the longer of the two and go into the square solder pad. The negative lead will be the shorter of the two and go into the round solder pad. The negative side will have a stripe down the side of the body of the capacitor as well.
  • Page 9 You will need to set the rotary switch so that it only turns to 3 positions. It has the ability to go up to 4. On the front of the switch, remove the bolt and first serrated washer. There will be a second washer with a notch on it. Lift the washer up and place it in the #3 hole.
  • Page 10 Step 9: Add the rotary switch. INSERT THE SWITCH TO THE UNDERSIDE OF THE PCB!!!! Step 10: Add the jacks, footswitch AC adaptor jack, and A100k to the enclosure.
  • Page 11 Step 11: Connect the A100K level pot to the PCB. Step 12: Insert the LED into the UNDERSIDE of the PCB, but do not solder it yet. The longest lead should go in the hole.
  • Page 12 Step 13: Mount the PCB to the enclosure. Loosely mount the toggle switch to the enclosure. Then slide the PCB into place so that the toggle switch fits into its hole. Then push the toggle switch so that it fits into its solder pads on the PCB by grabbing it by the toggle bat that is sticking out of the enclosure and guiding it i.
  • Page 13 Step 14: Once you have the PCB mounted and both the LED, Toggle switch, and Rotary switch are in place, first tighten the nut on the toggle switch and the rotary switch. THen solder the toggle switch and LED to the PCB.

  • Page 14: Wiring Diagram

    Armstrong Twin Wiring Diagram...

  • Page 15: Finishing Up & Troubleshooting

    2 and then come back to it with a fresh pair of eyes. Then the problem usually jumps right out at you .usually. If you still can t get it working, start a thread on the BYOC forum and ask for help. board.buildyourownclone.com...