Ramsey Electronics CW-700, Manual

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CW700
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ˆ 83. Install U3, the X2402 memory chip. Mount it the same way as you
did U2, except that the notch must point towards the front of the board.
Now that you have all of the components installed, you should check your
project and take another break. In a few minutes, you will tackle the hardest
part of the job: putting the boards together. Since it is so critical, you should
approach it with an open mind. We sincerely hope that you are both
enjoying yourself and educating yourself.
We will now assemble the boards and the paddles themselves.
ˆ 84. If they have not been done for you, using clippers, nibblers, a
Dremel tool or another method, cut out the edges of the paddles being
extremely careful not the cut any of the wires on the board. In order to
safely smooth out rough cuts, and work close to the wires, we suggest
using a fine file. When you are done, place the paddles against each
other with the silver traces on the
outside . They should fit together as if
they were one piece. Do not use glue, because it may push them apart
so far that they will not fit in the project. File the edges again so that they
are even.
ˆ 85. Holding the paddles against each other, pass the thin ends of the
paddles through the front board. With the paddles sticking through the
front board, press them into the slot on the main board firmly from the
component side of the board. You should now be able to solder the
paddles to the main board. It is important to keep the paddles straight,
and make good solder connections. For this reason, we suggest having
a helper hold the boards, or using a vise to hold everything in place.
NOTE: If the paddles don’t fit into the board all of the way, you may have
to enlarge the hole on the main board slightly, being careful not to
damage any connections.
ˆ 86. Now place the front board into the main board. The ends should fit
Solder
f illet
betw een PC
boards
Main PC
board
Solder f illet betw een PC
boards
Magnif ied
v iew
Front PC board
Solder
Solder
POT EN T IO M ET ER MO U NT ING D IA GRA M
PA D DL E MO UN T ING D IA GRA M