Fujitsu M10-4 Service Manual page 408

25.2 Before Maintaining a Crossbar Cable
(Optical)
This section describes the types and the flow of the maintenance of the crossbar
cables (optical), as well as precautions that must be observed.
Note - Read and understand the instructions in this chapter before starting the maintenance
work. Also see the contents of
25.2.1 Types of maintenance
Table 25-1
definition of maintenance, see
Table 25-1 Types of maintenance for crossbar cables (optical)
Configuration
With a crossbar box
25.2.2 Maintenance flow
Table 25-2
(optical).
Table 25-2 Maintenance flow
Task
1
2
3
4
25.2.3 Precautions for replacement
Note the following when replacing the crossbar cables (optical):
Replace the crossbar cables (optical) in pairs.
■
Do not place heavy objects on the crossbar cables (optical).
■
Fujitsu M10-4/Fujitsu M10-4S/SPARC M10-4/SPARC M10-4S Service Manual ･ February 2014
384
"Chapter 1 Before Starting Maintenance
lists the types of maintenance for the crossbar cables (optical). For the
"4.3 Understanding Types of
Active/hot Active/cold
Unsupported Unsupported
lists the sequence of the maintenance procedure for the crossbar cables
Preparation
Removing the crossbar cables (optical)
Installing the crossbar cables (optical)
Restoring the system
Maintenance."
Inactive/hot Inactive/cold
Unsupported Supported
Work."
System stopped
Supported
Replacement
25.3
25.4
25.5
25.6