M.T.H. Proto-Sound 3.0 Installation Manual page 12

Diesel/electric locomotive upgrade kit
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Mounting The Proto-Sound 3.0 Board Cont'd
- Once you have determined the best
locations for mounting the Proto-
Sound 3.0 Board bracket (A), metal
heat sink bracket (AA), mark the
chassis floor locations using a
pencil or silver marker so you can
drill the holes in the proper
locations. If necessary, determine
the location of the smoke unit
switch as well.
- Remove the Proto-Sound 3.0 board
with plastic mounting bracket (A),
metal heat sink bracket (AA), and
speaker from the chassis and place
on an ESD safe area on your
workbench. Removing the motors &
trucks will help protect them from
any stray metal chips when drilling
mounting holes.
- Drill the holes as marked with the
proper drill size. A 5/32" bit will be
required for the Proto-Sound 3.0
plastic mounting bracket (A) and
heat sink bracket (AA).
- De-burr the holes slightly using a
larger drill bit (3/8") or a deburring
tool. Clean all metal burrs or chips
from the chassis before proceeding.
Proto-Sound 3.0 Upgrade Kit Installation Guide - Diesel/Electric
Drill the appropriate mounting holes as
determined from positioning the Proto-
Sound 3.0 board and other components
Carefully remove any metal burrs
resulting from drilling the mounting
holes. Loose metal burrs can damage the
Proto-Sound 3.0 circuit board!
12

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