Unique Broadband Systems Ltd. DRU1KW User Manual

Page of 176
 
 Chapter 
Maintenance 
 
Figure 6-13 HPA PSU 30 VDC Rectifier Module 
 
 
1)  Front Grill/Cover 
2)  Front Grill/Cover Release Button 
 
 
6.5.7.1 
HPA PS (30 VDC Rectifier Module) Removal 
 
A HPA PS should be removed in the following sequence: 
 
1.  Open the electronics compartment front door for the corresponding sub-system. 
2.  Open the cabinet HPA compartment front door for the corresponding sub-system. 
3.  Using the HBE GUI or LBE GUI, place the corresponding sub-system in standby mode. 
4.  Switch OFF the HPA PSU circuit breaker, located on the HB cabinet PDU or LB cabinet 
PDU, which corresponds to the affected rectifier module – please refer to section 2.3.4 
or 2.3.5 for breaker designations. 
5.  Slide the black release button on the rectifier module front grill/cover cover down to 
release the grill/cover from the front of the rectifier module – see Figure 6-12. 
6.  Pull down on the rectifier module front grill/cover cover to disengage the rectifier 
module from the HPA PSU mounting shelf rear panel – see Figure 6-12. 
7.  Pull the rectifier module from the HPA PSU mounting shelf and set it aside. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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