5 Safety and Tools Requirements





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Safety Requirements page 5-1 Symbols page 5-3 System Precautions page 5-4 Tools Required page 5-4 --------------------------------

5.1 Safety Requirements

For your protection, observe the following safety requirements:

To protect both yourself and the equipment, observe the safety precautions listed in Table 5-1.

    Table 5-1 Safety Precautions

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Item Problem Precaution --------------------------------------------------------------------------------------------------------------------
                                     
AC power cord       Electric shock   Unplug the AC cord from the AC wall socket before working on the 
                                     power supply.
                                     
                                     
                                     
                                     Leave the AC power cord plugged into the AC wall outlet when 
                    Grounding        replacing drives, SIMMs, chips, or the system board.  Leaving the AC 
                                     power cord plugged into the wall outlet provides a grounding path for 
                                     the wrist strap, which must be attached.
                                     
Wrist strap         ESD              Wear a wrist strap when handling printed circuit boards, drives, or 
                                     other components such as SIMMs.  
                                     
ESD mat             ESD              An approved antistatic mat provides protection from static damage 
                                     when used with a wrist strap. The mat also cushions and protects small 
                                     parts that are attached to printed circuit boards.  Chapter 12, "Illustrated 
                                     Parts Breakdown," lists the part number of the mat.
                                     
Printed circuit     ESD              Handle a printed circuit board by the edges only.  Store a board in an 
boards                               antistatic bag.
                                     
Cover               System damage    Replace the cover after performing service on the system. 
                    and overheating                                                                                   
                                     
SBus and MBus       System damage    Install filler panels in all unused SBus and MBus slots. Openings on the 
slot filler panels  and overheating  back of system board reduce the cooling capability of the system. 
                                     
MBus module,        Heat, burns      Do not touch the metal heat sinks on the MBus module or the SMC chip.  
SMC chip                             The heat sinks can be hot enough to cause personal injury.
                                                                                                                      
heat sinks                                                                                                            

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5.2 Symbols

The following symbols mean:

WARNING
This equipment contains lethal voltages. Accidental contact can result in serious injury or death.

WARNING Physical danger due to a non-electrical hazard or danger of irreversible damage to data or to the operating system.

CAUTION Improper handling by unqualified personnel can cause serious damage to this equipment. Unqualified personnel who tamper with this equipment may be held liable for any resulting damage to the equipment.

CAUTION Hot surface. Avoid contact. Surfaces are hot and may cause personal injury if touched.

AC A terminal (power outlet) to which alternating current or voltage may be applied.

ON The power switch is in the ON position.

OFF The power switch is in the OFF position.

5.3 System Precautions

Individuals who service this equipment must observe all safety precautions and ensure compliance with skill level requirements, certification, and all applicable local and national laws.

Procedures contained in this document must be performed by trained maintenance providers. Only people who have been trained by the Sun Microsystems® training facilities (or by Sun Microsystems affiliates) and have been certified as required by local and national laws are considered qualified.

Caution -

Before you begin, carefully read each of the procedures in this manual. If you have not performed similar operations on comparable equipment, do not attempt to perform these procedures.

5.4 Tools Required

You will need the following tools and equipment:

5.5 Electro Static Discharge (ESD) Precautions

Caution -

The system chassis power must be turned off, and the AC power cord must remain plugged in to ensure a proper ground.

To minimize electro static discharge, observe the following precautions: