User Manual
Table Of Contents
- Dell EMC PowerEdge R750 Installation and Service Manual
- Contents
- About this document
- System overview
- Initial system setup and configuration
- Minimum to POST and system management configuration validation
- Installing and removing system components
- Safety instructions
- Before working inside your system
- After working inside your system
- Recommended tools
- Cable routing
- M.2 SSD module
- Optional front bezel
- System cover
- Drive backplane cover
- Air shroud
- Removing the air shroud
- Installing the air shroud
- Removing the GPU air shroud
- Installing the GPU air shroud
- Removing the GPU air shroud top cover
- Installing the GPU air shroud top cover
- Removing the GPU air shroud filler
- Installing the GPU air shroud filler
- Removing the rear drive module air shroud
- Installing the rear drive module air shroud
- Cooling fans
- Side wall brackets
- Drives
- Rear drive module
- Drive backplane
- PERC module
- System memory
- Processor and heat sink module
- Expansion cards and expansion card risers
- Expansion card installation guidelines
- Removing the expansion card risers
- Installing the expansion card risers
- Removing expansion card from the expansion card riser
- Installing an expansion card into the expansion card riser
- Removing the full length expansion card risers
- Installing the full length expansion card risers
- Removing a GPU
- Installing a GPU
- Removing R1 and R3 paddle cards
- Installing R1 and R3 paddle cards
- Optional serial COM port
- Optional VGA port for liquid cooling module
- Optional IDSDM module
- MicroSD card
- Optional BOSS S2 module
- System battery
- Optional internal USB card
- Intrusion switch module
- Optional OCP card
- Power supply unit
- Trusted Platform Module
- System board
- LOM card and rear I/O board
- Control panel
- Upgrade Kits
- Jumpers and connectors
- System diagnostics and indicator codes
- Getting help
- Documentation resources
Table 93. AC PSU status indicator codes
Power indicator codes Condition
Green Indicates that a valid power source is connected to the PSU
and the PSU is operational.
Blinking amber Indicates an issue with the PSU.
Not powered on Indicates that the power is not connected to the PSU.
Blinking green Indicates that the firmware of the PSU is being updated.
CAUTION: Do not disconnect the power cord or
unplug the PSU when updating firmware. If firmware
update is interrupted, the PSUs will not function.
Blinking green and powers off When hot-plugging a PSU, it blinks green five times at a rate
of 4 Hz and powers off. This indicates a PSU mismatch due to
efficiency, feature set, health status, or supported voltage.
CAUTION: If two PSUs are installed, both the PSUs
must have the same type of label; for example,
Extended Power Performance (EPP) label. Mixing
PSUs from previous generations of PowerEdge
servers is not supported, even if the PSUs have the
same power rating. This results in a PSU mismatch
condition or failure to power on the system.
CAUTION: If two PSUs are used, they must be of
the same type and have the same maximum output
power.
CAUTION: When correcting a PSU mismatch, replace
the PSU with the blinking indicator. Swapping the
PSU to make a matched pair can result in an error
condition and an unexpected system shutdown. To
change from a high output configuration to a low
output configuration or vice versa, you must power
off the system.
CAUTION: AC PSUs support both 240 V and 120 V
input voltages with the exception of Titanium PSUs,
which support only 240 V. When two identical PSUs
receive different input voltages, they can output
different wattages, and trigger a mismatch.
Table 94. DC PSU status indicator codes
Power indicator codes Condition
Green Indicates that a valid power source is connected to the PSU,
and the PSU is operational.
Blinking amber Indicates an issue with the PSU.
Not powered on Indicates that the power is not connected to the PSU.
Blinking green When hot-plugging a PSU, it blinks green five times at a rate
of 4 Hz and powers off. This indicates a PSU mismatch due to
efficiency, feature set, health status, or supported voltage.
CAUTION: If two PSUs are installed, both the PSUs
must have the same type of label; for example,
Extended Power Performance (EPP) label. Mixing
PSUs from previous generations of PowerEdge
servers is not supported, even if the PSUs have the
240 System diagnostics and indicator codes