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6 Maintaining Your System
Replacing Modules 81
Quick Reference Guide
10 Reconnect the power cord.
CAUTION:
The power cord should hang straight down from the connector, flush
against the plastic case. Do not install the power cord at an angle to
the case or with a loop in it.
11 Move the carrier’s On/Off switch to the “On” position (“—”).
12 Check that all green lights on the fronts of the modules are lit:
• If a single light is out, power down the control unit, reseat the module,
and power up the control unit.
• If multiple lights are out, power down the control unit, reseat the leftmost
module that has a light out, and power up the control unit.
• If the lights are still out, call for support as instructed on the inside front
cover of this guide.
13 Make sure all modules are seated properly. (The cover will not fit if the
modules are not seated properly.)
14 Perform the following steps to replace the cover:
a Position the carrier cover over the modules so that the openings on the
top of the carrier cover align correctly with the tabs at the top of the
installed 5-slot carrier and modules.
b Rotate the carrier cover into position so that it aligns correctly with the
thumb screw opening on the bottom of the carrier.
c Tighten the thumb screw. To ensure proper alignment and safe
operation, tighten the thumb screw securely.