User's Manual Part 2

Chapter 6 Maintenance
6.5.8.2 HPA PSU Mounting Shelf Installation
The replacement HPA PSU mounting shelf should be installed in the following sequence:
1. Slide the replacement HPA PSU mounting shelf into the open slot on the right side of
the HPA compartment frame.
2. Replace the three (3) 10-32 socket head cap screws (with #10 lock washers and flat
washers) which secure the HPA PSU mounting shelf to the HPA compartment frame –
see Figure 6-12
. A torque rating of 19.2 Inch Lbs. must be used to tighten the
screws.
3. Re-connect the ground conductor to the HPA PSU mounting shelf rear panel 1/4-20
GND terminal – see Figure 6-14
.
4. Re-connect the two (2) return conductors to the HPA PSU mounting shelf rear panel
1/4-20 RTN terminals – see Figure 6-14
.
5. Re-connect the two (2) positive conductors to the HPA PSU mounting shelf rear panel
1/4-20 POS terminals – see Figure 6-14
.
6. Replace the plastic cover, which shields the POS and RTN DC output terminals – see
Figure 6-14
.
7. Re-connect the serial cables (SX03-10924-02 and SX03-10924-01) to the HPA PSU
mounting shelf rear panel serial connectors J1 and J2 respectively – see Figure 6-14
.
8. Re-connect the 6-pin pluggable AC terminal block to the HPA PSU mounting shelf rear
panel 6-pin AC terminal block receptacle – see Figure 6-14
.
9. Install the LB HPA PS 2 (30 VDC rectifier module) - see section 6.5.7.4
.
10. Install the HB HPA PS 1 (30 VDC rectifier module) - see section 6.5.7.2
.
11. Switch ON the HB HPA PSU circuit breaker (CB1), located on the PDU.
12. Switch ON the LB HPA PSU circuit breaker (CB2), located on the PDU.
13. Using the LBE GUI, place the LB sub-system in transmit_only mode.
14. Using the HBE GUI, place the HB sub-system in broadcast mode.
15. Close the HPA compartment front and rear doors.
16. Close the electronics compartment front door.
SX03-10000-01-M01 6-25