ProLiant DL740 Server Maintenance and Service Guide
Table Of Contents
- HP ProLiant DL740 Server Maintenance and Service Guide
- Notice
- Contents
- About This Guide
- Chapter 1: Illustrated Parts Catalog
- Chapter 2: Service Preparation
- Chapter 3: Chassis Components Removal and Replacement Procedures
- Chapter 4: Host Module Removal and Replacement Procedures
- Chapter 5: Power and Media Module Removal and Replacement Procedures
- Chapter 6: Diagnostic Tools
- Chapter 7: Connectors, Switches, and LED Indicators
- Connectors
- System Board
- Switches
- LED Indicators
- System Power LED Switch
- Unit Identification LED Switches (Front and Rear)
- System Interconnect LED Indicators
- System Attention LED Indicators
- System Activity LED Indicators
- Hot-Plug SCSI Hard Drive LED Indicators
- Power Supply LED Indicators
- Hot-Plug Fan LED Indicators
- PCI Hot Plug LED Indicators
- Memory Cartridge LED Indicators
- DIMM Status LED Indicators
- Chapter 8: Physical, Operating, and Performance Specifications
- Index

Service Preparation
Rack Warnings and Precautions
WARNING: To reduce the risk of personal injury or damage to the equipment, be
sure that:
• The leveling jacks are extended to the floor.
• The full weight of the rack rests on the leveling jacks.
• The stabilizers are attached to the rack if it is a single-rack installation.
• The racks are coupled in multiple-rack installations.
• Only one component is extended at a time. A rack can become unstable if more
than one component is extended for any reason.
CAUTION: Always begin by mounting the heaviest item in the bottom of the rack. Continue to
populate the rack from the bottom to the top.
Server Warnings and Precautions
48-61 kg
105-135 lb
WARNING: The HP ProLiant DL740 server weighs 61 kilograms (135 pounds) when
fully assembled. To reduce the risk of personal injury or damage to the equipment:
• Observe local health and safety requirements and guidelines for manual material
handling.
• Obtain adequate assistance to lift and stabilize the product during installation or
removal.
• Remove all modules and power supplies to reduce the overall weight of the
product.
WARNING: To reduce the risk of personal injury from electric shock and hazardous
energy levels, only authorized service technicians should attempt to repair this
equipment. Improper repairs could create hazardous conditions.
WARNING: To reduce the risk of personal injury from hazardous energy or damage to
the equipment when working on energized servers:
• Remove all watches, rings, and any other loose-fitting jewelry.
• Do not use conductive tools inside the server that could bridge live parts.
WARNING: To reduce the risk of electric shock or damage to the equipment:
• Do not disable the power cord grounding plug. The grounding plug is an important
safety feature.
• Plug the power cord into a grounded electrical outlet that is easily accessible at all
times.
• Install the power supply before connecting the power cord to the power supply.
• Unplug the power cord before removing the power supply from the server.
• If the system has multiple power supplies, disconnect power from the system by
unplugging all power cords from the power supplies.
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