(1)
(2)(3)
(5)
(4)
Location
number
Component Connection
1 Cable(SIG) Crossbarbackplane unit and ter minal board (SIG)
2 Cable(PWR ) Crossbarback plane unit and terminal board (PWR)
3Terminalboard
4 Cable(SIG) Terminalboard (SIG) and f an backplane
5 Cable(PWR ) Terminalb oard (PWR) and fan backplane
Note- Read an d understand the instructions in this chapter before starting the maintenance
work.Also see the contents of "Chapter 1 BeforeStarting MaintenanceW ork."
Figure28-5 Locations for the cable kit
28.2 Before Maintaining the Cable Kit
Thissectio n describes the types and the flow of maintenance of the cable kit.

28.2.1 Types of maintenance

Table28-1 lists the types of maintena nce for the cable kit. For the definition of
maintenance,see "4.3 Understanding Types of Maintenance."
Chapter28 Maintainingthe Cable Kit of the Crossbar Box 429