User's Manual

Table Of Contents
Installation, Operation and Service Manual 90DIB500R41IM_FCC02 99.1 189
DIB-500 R4.1 Component replacement
Replacing the LRU – optional (redundancy package)
The LRU is supplied with voltage via a separate top hat rail power supply unit.
Figure 11.9 shows the top view of the installed redundancy package. The following table
describes the additional components in detail.
Figure 11.9 Redundancy package (top view)
11.6.1 Removing the LRU
The LRU is fastened onto the top hat rail with a locking device, see Figure 11.9 on
page 189.
Removing the LRU
Preparation:
The network element must have been put out of operation temporarily, refer to sec-
tion 8.1 on page 163.
The preparatory measures must be completed, refer to Table 11.10 on page 175.
The tools and aids must be available, refer to section 11.2.4 on page 173.
Carry out the following steps:
1. Secure the LRU with your one hand and pull the red locking device away from the
component, refer to Figure 11.10.
Figure 11.10 Locking device of the LRU (section)
Table 11.19 Legend: Redundancy package (top view)
No. Component
1LRU
2 Top hat rail power supply unit of the LRU
1 2