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Installing the Control Unit
Step 2a: Installing a Ring Generator
If a ring generator (the 129B frequency generator) is indicated on the Control
Unit Diagram it must be installed in the power supply before installing the
power supply into the carrier.
NOTE:
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This procedure is part of a larger procedure for installing the power
supply. If you have not already read the beginning of this section,
“Installing the Power Supply,” do so before continuing.
If you are replacing a ring generator, skip to the next section, “Step
2b: Replacing a Ring Generator.”
WARNING:
Hazardous electrical voltages may be present if the following steps
are not performed correctly.
Follow these steps to install a ring generator (see Figure 2-9 throughout this
procedure):
a. Make sure each power supply is turned off, including the module in the
control unit and any auxiliary power units.
b. Unplug the power supply cord from the AC outlet (or from the auxiliary
power unit) and then from the power supply.
NOTE:
At this point, all cords should be removed from the power supply.
c. Remove the power supply from the carrier.
d. Place the power supply on its left side and remove the five screws.
2-30
Installing the Power Supply