User's Manual Part 2

Chapter 6 Maintenance
6.5.12 DR Filter Box Replacement
Open or loose RF connections during operation may cause electric arcs
that can cause burns and eye injuries, as well as
damage equipment.
Always ensure that both the HB and LB sub-systems have been placed
in standby mode and DC power to the HPAs has been switched OFF.
Always install the DR filter box with the aid of a second handler. The
DR filter box weighs approximately 50 lbs.
To prevent damage to the connectors, do no stand the DR filter box on
its rear panel.
6.5.12.1 DR Filter Box Removal
The DR filter box should be removed in the following sequence:
1. Open the electronics compartment front door.
2. Open the HPA compartment front door.
3. Using the HBE GUI, place the HB sub-system in standby mode.
4. Using the LBE GUI, place the LB sub-system in standby mode.
5. Switch OFF the HB HPA PSU circuit breaker (CB1), located on the PDU.
6. Switch OFF the LB HPA PSU circuit breaker (CB2), located on the PDU.
7. Loosen the four (4) 10-32 Phillips head captive screws which secure the DR filter box
to the HPA compartment frame – see Figure 6-19
.
8. Using two handlers, one located on each side of the DR filter box, pull the DR filter
box from the HPA compartment frame and set it aside.
SX03-10000-01-M01 6-36