NEC SV8500, Operation And Maintenance Manual

Page: 125 / 975

– 78 –
CHAPTER 2 Operations of SV8500 Server
6.4 EXB (EXB-PIR/EXB-TSW) Card Replacement Procedure
This card is used for system having PIR only. EXB (EXB-PIR/EXB-TSW) cards are
mounted on the rear side of SV8500 server. The main function of the card is to provide
an interface between CPU and PIR/TSWR through Local I/O bus. When CPU is provided
in dual configuration, ACT/STBY of EXB card and CPU always switches over in com-
bination. EXB-PIR and EXB-TSW are used for 1-IMG and 4-IMG respectively. Howev-
er, replacement procedure is exactly the same.
ATTENTION
Contents
Static Sensitive
Handling
Precautions Required
EXB0 EXB1
CPU0
CPU1
EMA
SV8500 Server
PIR/TSWR
Line/Trunk
Local I/O bus
Local I/O bus
When the system is CPU single configuration, the whole system must be shut down for EXB
card replacement.
WARNING
EXB (#1)
SV8500 Server (rear)
EXB (#0)