HPE Edgeline EL300, Maintenance And Service Manual, Page: 19 / 57

Removal and replacement procedures
Required tools
You need the following items for some procedures:
• T-10 security screwdriver
• T-15 security screwdriver
• Phillips screwdriver
Safety considerations
Before performing service procedures, review all the safety information.
Preventing electrostatic discharge
To prevent damaging the system, be aware of the precautions you must follow when setting up the system or handling parts.
A discharge of static electricity from a finger or other conductor may damage system boards or other static-sensitive devices.
This type of damage may reduce the life expectancy of the device.
Procedure
• Avoid hand contact by transporting and storing products in static-safe containers.
• Keep electrostatic-sensitive parts in their containers until they arrive at static-free workstations.
• Place parts on a grounded surface before removing them from their containers.
• Avoid touching pins, leads, or circuitry.
• Always be properly grounded when touching a static-sensitive component or assembly.
Symbols on equipment
The following symbols might be found on the equipment to indicate the presence of potentially hazardous conditions.
This symbol indicates the presence of hazardous energy circuits or electric shock hazards. Refer all
servicing to qualified personnel.
WARNING: To reduce the risk of injury from electric shock hazards, do not open this enclosure. Refer
all maintenance, upgrades, and servicing to qualified personnel.
This symbol indicates the presence of electric shock hazards. The area contains no user or field
serviceable parts. Do not open for any reason.
WARNING: To reduce the risk of injury from electric shock hazards, do not open this enclosure.
This symbol on an RJ-45 receptacle indicates a network interface connection.
WARNING: To reduce the risk of electric shock, fire, or damage to the equipment, do not plug telephone
or telecommunications connectors into this receptacle.
Removal and replacement procedures 19