Assembly Steps - Ramsey Electronics UAM4 Manual

electrolytic capacitors and resistors are marked so it will be easier to
determine their values. The SMT components are small and occasionally
decide to take a flying trip. Because of this we include some extra parts in
these packages.
A good magnifier will help in the assembly process. Here in the lab and
factory we use the visor mounted magnifier (The OptiVisor in the Ramsey
Catalog) to assemble and troubleshoot equipment. You'd be surprised what
you can't see on boards like the UAM4 without them!
Position the board in front of you with the word 'TOP' readable in the upper
right hand corner.
U1 has been installed at the factory for your assembly convenience. Please
be careful when soldering some of the components near it, (C10, C11, C15
and C16 in particular), as it is easy to slip and cause a solder bridge on its
connections. (I know this from my own experience!) If this happens, do not
attempt to remove the solder unless you are absolutely confident you can do
it. U1's connections are actually underneath the package and it is difficult to
remove bridges without damaging either the board or U1 itself. Call our
technical support for information before you attempt to do anything associated
with U1 if you have even the slightest doubt.
Assembly
Steps 1-18 deal with surface-mount components (SMT). SMT components
are soldered directly onto the top of the board. First we'll install all of the small
non-electrolytic surface mount capacitors. Because these components are
not marked they are in individual marked packages. Be careful not to mix
them up.
1. Install 1uF capacitor C1, located near the bottom edge of the board.
2. Install 1uF capacitor C2, located near the bottom edge of the board.
3. Install 1uF capacitor C3, located near the bottom edge of the board.
4. Install 1uF capacitor C4, located near the bottom edge of the board.
5. Install 1uF capacitor C10 located near the lower left corner of U1.
6. Install 0.1uF capacitor C11, near the left edge of U1.
7. Install 0.1uF capacitor C15, near the left edge of U1.
8. Install 0.1uF capacitor C7 located to the right of C9 below U1.
9. Install 0.1uF capacitor C16 near upper right edge of U1.
UAM4• 11