User's Manual

Chapter 6 Maintenance
6.5.2.2 Low Band Sub-system Shutdown
The Independent DRU
LB sub-system should be shut down in the following sequence:
1. Using the LBE GUI, set SysOperatingMode to standby.
o The LBE GUI Cpl2ForwardPwr reading will be 0 dBm.
o The LB HPA LED will be illuminated blue.
o The TRMS LB Status LED will be extinguished.
2. Switch OFF the LB HPA PSU circuit breaker (CB1, CB2, CB3 and CB4), located on the
LB cabinet PDU.
o The Norm LED’s on the LB HPA PSU’s (PS 1, PS2, PS3 and PS4) will be
extinguished.
o The front panel LED’s on the LB HPA’s (HPA 1, HPA 2, HPA 3 and HPA 4) will flash
green and red alternately.
3. Switch OFF the TSC-L 5A circuit breaker, located on the BMS front panel.
o The LED’s on the LB HPA’s will be extinguished.
4. Switch OFF the LBE 25A circuit breaker, located on the BMS front panel.
o The LBE Power LED will be extinguished and the internal fan will turn off.
5. Switch OFF FAN 1 / FAN 2 (CB 9) and the FAN 3 / FAN 4 (CB10) circuit breakers,
located on the LB cabinet PDU.
o The HPA compartment fans will turn off (fans cannot be heard) and that the PDU
FAN 1 and 2 LEDs will be extinguished.
SX03-2000
0-01-M01 6-10