User's Manual

9-34 68P81093C75-A
10. Reconnect the PA ribbon and power cables to the backplane,
making sure the ribbon connector latches securely. Make sure
all other cables are attached and reattach the backplane as
described in the Backplane replacement subsection.
11. If desired, power up the station while it is still out of the case to
verify the PA is connected properly. Unplug the station before
continuing to the next step.
12. Place the chassis back in the case and secure it with the eight
Phillips screws around the top panel.
After Installing the New
Power Amplifier
Perform the following alignment procedures as described in the
Setup and Connections section of this manual:
• Power Output
Power Supply
Physical Replacement of
the Power Supply
1. Turn off the station’s power by unplugging the AC and DC
power cords from the top panel.
2. Detach the backplane from the chassis as described in Steps 1
through 8 of the Backplane subsection of “Module
Replacement.”
3. Remove the four Phillips screws holding the Power Supply to
the top panel of the chassis.
4. Disconnect all five wires from the Power Supply, then pull the
Power Supply out of the chassis.
NOTE: To access the wires, it may be necessary to remove
either the PA or Exciter module as described in the
respective Module Replacement subsection.
5. Reconnect the wires to the new Power Supply as follows:
• Green to GND
• Orange to the “H” INPUT
• Brown to the “N” INPUT
• White to the “POS” OUTPUT
• Black to the “NEG” OUTPUT.
6. While holding the PS with one hand, start two or more Phillips
screws in the top panel to hold the Power Supply in place. Insert
the remaining screws and tighten all four.
7. Finish reassembling the station as described in Steps 11 through
18 of the Backplane subsection of “Module Replacement.”