Service manual

4-12 AlphaServer GS80/160/320 Service Manual
4.3.1 Hot-Swapping a FRU
The hardware supports three FRUs that can be removed while power is
applied to the rest of the system: three different power supplies, CPUs,
and local I/O risers.
CPU
1. Put the CPU in the hot-swap state by:
• For OpenVMS Planned feature - refer to the OpenVMS documentation
• For Tru64 UNIX Planned feature - refer to the Tru64 UNIX documentation
2. The yellow Swap OK LED lights on the target CPU.
Local I/O riser (not possible at FRS – use the warm-swap state if applicable)
1. Hot-swap of the local I/O riser starts by removing the I/O resources connected to the
target from the operating system. (Not possible at FRS)
• For OpenVMS Planned feature - refer to the OpenVMS documentation
• For Tru64 UNIX Planned feature - refer to the Tru64 UNIX documentation
2. The yellow Swap OK LED lights on the target local I/O riser.
Redundant 48V Power Supply
No special procedure required. See Section 5.4.
Redundant H-switch Power Supply
Special procedure required. See Section 4.7.2.
PCI Power Supply
Special procedure required. See Section 6.14.