IBM 0551, Manual

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3. Complete a parts inventory (See “Completing a parts inventory” on page 93).
4. Determine where the expansion unit should be located in the rack. See “Determining the location.”
5. Mark the location. See “Marking the location without a rack-mounting template” on page 52.
Determining the location
You might need to determine where to install an expansion unit in the rack. Follow this procedure to
perform this task either with or without the aid of a rack-mounting template.
Before installing the system unit or expansion unit into a rack, complete the following steps:
1. Plan where you will place the units. Place the larger and heavier units in the lower part of the rack.
2. If necessary, remove the filler panels to allow access to the inside of the rack enclosure where you
plan to place the unit.
Figure 43. Unpacking the rack template and hardware
Chapter 3. Installing a system or expansion unit into a rack
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