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CPU Units, I/O Power Supply Units and Slave Units must have the screws on the
bottom tightened with a Phillips screwdriver. The screwdriver must be held at a
slight angle, so be sure to leave enough space below each Rack.
Phillips
screwdriver
20 mm min.
20 mm min.
Backplane
Duct
Remote
I/O Rack
I/O Power
Supply Unit
CPU Unit
Duct
Installation Environment
Section 3-1