User's Manual

Chapter 6 Maintenance
6.5.4 Low Band Exciter (LBE) Replacement
Always ensure that the DC power to the LBE has been switched OFF prior
to removing the LBE. This will prevent injury caused by electric shock
and prevent damage to equipment.
6.5.4.1 LBE Removal
The L
BE should be removed in the following sequence:
1. Open the LB cabinet electronics compartment front and rear doors, as well as the HB
cabinet front door.
2. Using the LBE GUI, place the LB sub-system in standby mode.
3. Switch OFF the LB HPA PSU circuit breaker (CB1, CB2, CB3 and CB4), located on the
LB cabinet PDU front panel.
4. Switch OFF the TSC-L 5A circuit breaker, located on the BMS front panel.
5. Switch OFF the LBE 25A circuit breaker, located on the BMS front panel.
6. Switch OFF the LBE rear panel power switch.
7. Disconnect the wires/cables connected to the LBE rear panel.
8. Remove the two (2) Phillips pan head screws which secure the LBE to the mounting
brackets – see Figure 6-4
.
9. Remove the LBE from the LB cabinet electronics compartment and set it aside.
Figure 6-4 LBE Mounting Brackets with LBE
1) LBE Mounting Bracket (left side)
2) LBE Mounting Bracket (right side)
3) Mounting Screw Hole
4) LBE
5) XXX Screw
SX03-2000
0-01-M01 6-15