Removing The System Control (Sc) Board System Controller Cpu Board; System Controller Cpu Board Memory Board Installation Procedures; Installing Memory Boards On The System Controller Cpu Board - Sun Microsystems Sun Fire E25K Service Manual

5.1.3 Removing the System Control (SC) Board System
Controller CPU Board
1. Loosen the two (2) captive screws holding the system controller CPU to the SC
board.
2. Remove the system controller CPU board by using the insert-eject levers on the
board, and place the board on a flat sturdy ESD-protected surface with the
component side up.
5.2 System Controller CPU Board Memory
Board Installation Procedures
Note – Prior to installation, Sun Microsystems technicians need to reference Infodoc
72037 for the required system controller CPU upgrade information.
Inspect the new board before inserting it into the Sun Fire E25K/E20K systems.
1. Remove the connector protective cover from the board being installed and inspect
the connector for any damage or gaps between the pins.
2. Ensure the board alignment tabs are not bent.
3. Inspect the mating connector before inserting the new board.
Caution – Do not force any board into a slot; it can cause damage to the board and
the system. The board should insert and seat smoothly. If it binds, remove the board
and inspect the card cage slot for any obvious obstructions.
5.2.1 Installing Memory Boards on the System
Controller CPU Board
The system controller CPU board can support up to two memory boards, each with
a 512 MByte configuration. The first memory board is installed directly onto the
system controller CPU board. The second memory board is installed directly on top
of the first memory board.
Chapter 5 System Controller CPU Board for the System Control (SC) Board 5-3