System Board; Removal - Sun Microsystems SPARCserver 1000 Manual

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2.2 System Board

2.2.1 Removal

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2-2
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Do not place the system board or SBus cards on a hard surface. Use a
cushioned antistatic mat. The board connectors and components have very
thin pins that bend easily.
•
Do not use an oscilloscope probe on the components. The soldered pins are
easily damaged or shorted by the probe point.
•
Transport the board in an antistatic bag.
Before you remove a system board, you must first halt the system and turn off
the power using the instructions that follow.
Before turning off the system power, you must halt the operating system. See
the Preface, "When You Need Help with UNIX Commands," if you need
references to help with the commands or help in performing the system
administration procedures described below.
Caution – To avoid damaging internal circuits, do not disconnect or plug in
any cable while power is applied to the system.
To shut down the system and give users a shutdown warning:
1. Back up the system files and data to tape, if necessary.
2. Notify users that the system is going down.
3. Halt the system using the appropriate commands.
4. Wait for the system-halted message and the boot monitor prompt.
5. Turn the key switch located on the front panel to the Standby position.
6. Turn the AC power switch on the system back panel off.
7. Unfasten any cable connectors from the board back panel and set aside.
Disconnect any keyboard, SCSI, network, or other cables connected to the
back panel. Label cables to ease reconnection later.
8. Remove the two screws that hold the system board to the card cage.
Refer to Figure 2-1. Set the screws aside for later reinstallation.
SPARCserver 1000 System Board Manual—October 1994