Warnings And Cautions - Silicon Graphics 1400 Server Family Maintenance And Upgrade Manual

Chapter 1: Working Inside the System

Warnings and Cautions

2
These warnings and cautions apply whenever you remove the access cover of the
system. Only a technically qualified person should integrate and configure the system.
Warning:
S
YSTEM POWER ON
turn off the system AC power. To remove power from system, you must unplug the AC
power cords from the wall outlet or the system.
Hazardous voltage, current, and energy levels are present inside the power supply.
There are no user-serviceable parts inside it; servicing should be done by technically
qualified personnel.
Hazardous electrical conditions may be present on power, telephone, and
communication cables. Turn off the system and disconnect the power cords,
telecommunications systems, networks, and modems attached to the system before
opening it. Otherwise, personal injury or equipment damage can result.
Caution: Electrostatic discharge (ESD) and ESD protection: ESD can damage disk
drives, boards, and other parts. We recommend that you do all procedures in this chapter
only at an ESD-protected workstation. If one is not available, provide some ESD
protection by wearing an antistatic wrist strap attached to chassis groundany
unpainted metal surfaceon your system when handling parts.
Always handle boards carefully. They can be extremely sensitive to ESD. Hold boards
only by their edges. After removing a board from its protective wrapper or from the
system, place it component-side UP on a grounded, static-free surface. If you place the
baseboard on a conductive surface, the battery leads may short out. If they do, this will
result in a loss of CMOS data and will drain the battery. Use a conductive foam pad if
available but NOT the board wrapper. Do not slide board over any surface.
For proper cooling and airflow, always install the chassis access cover before turning on
the system. Operating the system without the cover in place can damage system parts.
/ : The on/off button on the front panel DOES NOT
OFF