User's Manual

Chapter 6 Maintenance
6.5.8.2 HPA PSU Mounting Shelf Installation
The replacement HPA PSU mountin
g 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 rectifier modules in the HPA PSU mounting shelf - see section 6.5.7.2
.
10. Switch ON the HPA PSU circuit breakers, located on the HB cabinet PDU or LB cabinet
PDU – please refer to section 2.3.4
or 2.3.5 for breaker designations.
11. Using the HBE GUI, place the HB sub-system in broadcast mode or, using the LBE
GUI, place the LB sub-system in transmit_only mode.
12. Close the HPA compartment front and rear doors.
13. Close the electronics compartment front door.
SX03-2000
0-01-M01 6-31