Ramsey Electronics AR2 Instruction Manual - page 27
AR2
• 27
Now we’ll install some of the larger connectors and parts, then we’ll be ready
for a final checkout of our assembly. And then . . . the moment of truth,
applying power to your kit.
137. Install J7, BNC PC mount jack. Be sure the part is flat on the PC
board before soldering. That will ensure a good fit when you assemble the
case. Also, the ground leads on this part will require a bit more time so be
patient when soldering them.
138. Install J9, 3.5mm stereo headphone jack. As with all the other jacks
and connectors, make sure the part is flat before soldering.
139. Install J8, 3.5mm mono speaker jack.
140. Install J1, the last 8 pin dual row connector. Install the part so that
the long pins will stick out the back and the short pins are soldered to the
PC board. Slide the part onto the PC board and make sure that all the
pins on both sides of the board line up with their pads before soldering
any of them. Tack one pin, check the alignment top and bottom again,
then solder the rest of the pins.
141. Install J4, 2.1mm DC power jack, positive tip. We mention the
positive tip on this part as a reminder for when you connect power to the
kit.
142. Next we’ll place R4 into its holes but don’t solder it in yet! First we’ll
place that part and the one next to it, R27, then we’ll slide the PC boards
together and solder the parts in later.
143. In the same way that you placed R4, place R27 into its holes on the
board but don’t solder it yet.
144. Take the red and black twisted pair wire and strip the wires on the
end without the connector about 1/16 of an inch. Twist the strands of the
wire and tin them by applying some solder to them.
145. Now take your speaker, SP1 and flip it onto its face so that the solder
pads are showing on the backside. Nip the red tinned wire end so that it
will fit onto the pad marked with a red dot on the back of the speaker and
solder it there. You’ll want to be sure that the wire does not short to the
metal case of the speaker.
146. In the same way, solder the black tinned wire end to the other solder
pad. The pads are separated by a black section so it’s easy to see where
the wires go. Again, don’t short it out to the case of the speaker.
147. Locate your front panel and the bezel that goes with it. (The bezel is
the plastic piece in which the front panel sits). Put the bezel aside for now.
Next find the hardware for the speaker, the four 1-64 X 1/4 inch screws