3-6 UltraEnterprise 6000/5000/4000 Systems Manual—November 1996
3
Figure3-3 CPU/Memory Board SimplifiedBlock Diagram
3.4.1 Removing a Board

3.4.1.1 Removing a Board from a Powered On System

Caution – Remove a board from a powered on system only after the ASR

software has disabled the board. If a board has not been disabled by the ASR

software, then the operating system should be halted and the system powered

off prior to board removal. See Chapter12, “Powering Off and On” and then

see Section 3.4.1.2, “Removing a Boardfrom a Nonpowered On System.”

Centerplane Connector
Data (8)
Address
controller
Memory (16 x 72 bit SIMMs)
Address Data
UltraSPARC
module
UltraSPARC
module
Control
Address
Data
Data
Address
RAS/CAS
Control
controller
Bootbus
controller
Bootbus
On-board devices
!