Replica 1 plus Users Manual Step 6: Install the transistor. The pins may need to be separated a little to make them fit into the holes. Make sure the flat spot on the transistor matches the flat spot on the board. Turn the board over and solder down. Cut away the excess leads. Figure 15: Transistor Step 7: Installing the serial USB power interface. The small red USB board supplies power and serial to USB communication with the replica 1 to a PC or Mac for data transfer. To install this board onto the replica 1, you need to first install two 9 pin headers onto the USB interface .
Push the pins through the bottom of the USB board and rest it on the table with the pins on the bottom of the board. You have to be careful not to solder all the pins right away or the spacing may be incorrect. Solder 1 pin on each of the two 9 pin headers. Make sure the taller pins are pointed up through the USB board because you don't need a long lead through the replica 1 board. After you solder 1 pin each row, place the board and pins into the replica 1 board and adjust the headers so they fit into the replica 1. Now that you have the spacing correct, while it is sitting in the replica 1 ten, solder the remaining pins on the USB board.
Hold the USB board still mounted in the replica 1 and turn the replica 1 over. Solder 1 pin of one of the 9 pin headers so the USB board is attached and check that everything is flush before finishing up the remaining pins. Figure 16: USB board © Briel Computers 2014 page 16