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

Connectors, Switches, and LED Indicators
LED Indicators
Status LEDs are located on the front, back, and inside of the server. These LEDs
communicate the current status of varying aspects of the components and operations, aiding
you in diagnosing problems. The following ProLiant DL740 server LEDs are explained in
this chapter.
• System power LED switch—Located in the server Power On/Standby button
• Unit identification LED switches—Located on the front and back of the server
• System interconnect LEDs—Located on the front, top left edge of the server
• System attention LEDs—Located on the front, top left edge of the server
• System activity LEDs—Located on the front, top left edge of the server
• Hot-plug SCSI hard drive LEDs—Located on the front of each hard drive
• Power supply LEDs—Located on the lower front of each power supply
• Hot-plug fan LEDs—Located on the host board near each fan inside the server
• PCI Hot Plug LEDs—Located on the rear of the server and inside the host module
• Memory cartridge LEDs—Located on the memory cartridges
• DIMM status LEDs—Located on the front right top edge of the server
7-6 HP ProLiant DL740 Server Maintenance and Service Guide
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