Dell PowerEdge R740xd Manual

Dell EMC PowerEdge R740xd
Installation and Service Manual
Regulatory Model: E38S Series
Regulatory Type: E38S001

Notes, cautions, and warnings
NOTE: A NOTE indicates important information that helps you make better use of your product.
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.
WARNING: A WARNING indicates a potential for property damage, personal injury, or death.
Copyright ©2017 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other
trademarks may be trademarks of their respective owners.
2017 - 12
Rev. A03

Contents
1 PowerEdge R740xd system overview............................................................................................................. 8
Supported congurations..................................................................................................................................................8
Front view of the system.................................................................................................................................................10
Left control panel view............................................................................................................................................... 11
Right control panel view............................................................................................................................................ 14
Back view of the system................................................................................................................................................. 15
NIC indicator codes.................................................................................................................................................... 17
Power supply unit indicator codes............................................................................................................................17
Drive indicator codes........................................................................................................................................................19
LCD panel..........................................................................................................................................................................20
Viewing Home screen.................................................................................................................................................21
Setup menu................................................................................................................................................................. 21
View menu.................................................................................................................................................................. 22
Locating Service Tag of your system.............................................................................................................................22
2 Documentation resources............................................................................................................................ 23
3 Technical specications............................................................................................................................... 25
System dimensions.......................................................................................................................................................... 25
Chassis weight................................................................................................................................................................. 26
Processor specications..................................................................................................................................................27
PSU specications........................................................................................................................................................... 27
System battery specications........................................................................................................................................ 28
Expansion bus specications..........................................................................................................................................28
Memory specications.................................................................................................................................................... 29
Storage controller specications....................................................................................................................................30
Drive specications..........................................................................................................................................................30
Drives...........................................................................................................................................................................30
Ports and connectors specications............................................................................................................................. 30
USB ports................................................................................................................................................................... 30
NIC ports......................................................................................................................................................................31
VGA ports.................................................................................................................................................................... 31
Serial connector.......................................................................................................................................................... 31
Internal Dual SD Module or vFlash card...................................................................................................................31
Video specications..........................................................................................................................................................31
Environmental specications.......................................................................................................................................... 32
Standard operating temperature..............................................................................................................................33
Expanded operating temperature............................................................................................................................ 33
Particulate and gaseous contamination specications..........................................................................................35
4 Initial system setup and conguration.......................................................................................................... 37
Setting up your system....................................................................................................................................................37
Contents 3

iDRAC conguration.........................................................................................................................................................37
Options to set up iDRAC IP address........................................................................................................................ 37
Log in to iDRAC..........................................................................................................................................................38
Options to install the operating system.........................................................................................................................38
Methods to download rmware and drivers...........................................................................................................39
Downloading drivers and rmware.......................................................................................................................... 39
5 Pre-operating system management applications..........................................................................................40
Options to manage the pre-operating system applications........................................................................................40
System Setup...................................................................................................................................................................40
Viewing System Setup............................................................................................................................................... 41
System Setup details..................................................................................................................................................41
System BIOS...............................................................................................................................................................42
iDRAC Settings utility.................................................................................................................................................61
Device Settings.......................................................................................................................................................... 62
Dell Lifecycle Controller...................................................................................................................................................62
Embedded system management............................................................................................................................. 62
Boot Manager...................................................................................................................................................................62
Viewing Boot Manager..............................................................................................................................................62
Boot Manager main menu........................................................................................................................................ 63
One-shot BIOS boot menu.......................................................................................................................................63
System Utilities...........................................................................................................................................................63
PXE boot...........................................................................................................................................................................63
6 Installing and removing system components................................................................................................65
Safety instructions...........................................................................................................................................................65
Before working inside your system................................................................................................................................65
After working inside your system...................................................................................................................................65
Recommended tools........................................................................................................................................................66
Optional front bezel......................................................................................................................................................... 66
Removing the optional front bezel...........................................................................................................................66
Installing the optional front bezel............................................................................................................................. 67
System cover....................................................................................................................................................................68
Removing the system cover.....................................................................................................................................68
Installing the system cover....................................................................................................................................... 69
Backplane cover...............................................................................................................................................................70
Removing the backplane cover................................................................................................................................70
Installing the backplane cover................................................................................................................................... 71
Inside the system............................................................................................................................................................. 72
Air shroud.......................................................................................................................................................................... 74
Removing the air shroud........................................................................................................................................... 75
Installing the air shroud..............................................................................................................................................75
Cooling fan assembly.......................................................................................................................................................76
Removing the cooling fan assembly........................................................................................................................ 76
Installing the cooling fan assembly...........................................................................................................................77
Cooling fans...................................................................................................................................................................... 78
4Contents

Removing a cooling fan............................................................................................................................................. 79
Installing a cooling fan............................................................................................................................................... 80
Intrusion switch................................................................................................................................................................80
Removing an intrusion switch................................................................................................................................... 81
Installing an intrusion switch......................................................................................................................................81
NVDIMM-N battery.........................................................................................................................................................82
Removing the NVDIMM-N battery from the air shroud....................................................................................... 82
Installing NVDIMM-N battery into air shroud.........................................................................................................83
Removing NVDIMM-N battery from mid drive tray.............................................................................................. 84
Installing NVDIMM-N battery into mid drive tray.................................................................................................. 85
Removing NVDIMM-N battery from the bracket..................................................................................................86
Installing NVDIMM-N battery into the bracket.......................................................................................................87
Mid drive tray................................................................................................................................................................... 88
Removing mid drive tray........................................................................................................................................... 88
Installing the mid drive tray.......................................................................................................................................89
Removing drive blank from drive carrier.................................................................................................................90
Installing drive blank into the drive carrier............................................................................................................... 91
Removing drive carrier from the mid drive tray......................................................................................................91
Installing drive carrier into mid drive tray................................................................................................................ 92
Removing 3.5 inch drive from the drive carrier......................................................................................................93
Installing 3.5 inch drive into the drive carrier..........................................................................................................94
Removing a 2.5 inch drive from the 3.5 inch mid drive carrier............................................................................ 95
Installing a 2.5 inch drive into the 3.5 inch mid drive carrier.................................................................................96
Drives.................................................................................................................................................................................97
Removing a drive blank..............................................................................................................................................97
Installing a drive blank................................................................................................................................................98
Removing a drive carrier........................................................................................................................................... 99
Installing a drive carrier............................................................................................................................................100
Removing a 2.5 inch drive from the 3.5 inch drive adapter.................................................................................101
Installing a 2.5 inch drive into the 3.5 inch drive adapter.................................................................................... 102
Removing a 3.5 inch adapter from a 3.5 inch drive carrier..................................................................................103
Installing a 3.5 inch adapter into a 3.5 inch drive carrier......................................................................................104
Removing the drive from the drive carrier............................................................................................................105
Installing a drive into the drive carrier....................................................................................................................106
Rear drive cage...............................................................................................................................................................107
Removing rear drive cage........................................................................................................................................107
Installing rear drive cage..........................................................................................................................................109
System memory.............................................................................................................................................................. 110
General memory module installation guidelines..................................................................................................... 112
NVDIMM-N memory module installation guidelines ............................................................................................ 112
Mode-specic guidelines..........................................................................................................................................112
Removing a memory module................................................................................................................................... 114
Installing a memory module......................................................................................................................................115
Processors and heat sinks..............................................................................................................................................116
Removing a processor and heat sink module.........................................................................................................117
Contents 5

Removing the processor from the processor and heat sink module.................................................................. 118
Installing the processor into a processor and heat sink module......................................................................... 120
Installing a processor and heat sink module..........................................................................................................122
Expansion cards and expansion card risers................................................................................................................. 124
Expansion card installation guidelines.................................................................................................................... 124
Opening and closing the PCIe card holder latch...................................................................................................128
Removing the expansion card from expansion card riser....................................................................................129
Installing expansion card into expansion card riser...............................................................................................132
Removing riser 2 and 3 blank..................................................................................................................................134
Installing riser 2 and 3 blank.................................................................................................................................... 135
Removing riser 3 blank.............................................................................................................................................136
Installing riser 3 blank............................................................................................................................................... 137
Removing expansion card riser 1.............................................................................................................................138
Installing expansion card riser 1...............................................................................................................................139
Removing expansion card riser 2............................................................................................................................140
Installing expansion card riser 2...............................................................................................................................141
Removing expansion card riser 3............................................................................................................................143
Installing expansion card riser 3.............................................................................................................................. 144
GPU card installation guidelines..............................................................................................................................144
Removing a GPU......................................................................................................................................................145
Installing a GPU.........................................................................................................................................................147
IDSDM/vFlash card (optional)......................................................................................................................................153
Removing the micro SD card.................................................................................................................................. 153
Installing the micro SD card.....................................................................................................................................153
Removing the optional IDSDM or vFlash card......................................................................................................154
Installing optional IDSDM or vFlash card...............................................................................................................155
Network daughter card................................................................................................................................................. 156
Removing the network daughter card...................................................................................................................156
Installing the network daughter card......................................................................................................................157
Integrated storage controller card................................................................................................................................158
Removing integrated storage controller card........................................................................................................158
Installing integrated storage controller card..........................................................................................................160
Drive backplane............................................................................................................................................................... 161
Drive backplane connectors.....................................................................................................................................161
Removing drive backplane ..................................................................................................................................... 163
Installing drive backplane.........................................................................................................................................164
Removing drive backplane (mid)............................................................................................................................165
Installing drive backplane (mid).............................................................................................................................. 166
Removing 3.5 inch drive backplane (rear).............................................................................................................167
Installing 3.5 inch drive backplane (rear)............................................................................................................... 168
Removing the 2.5 inch drive backplane (rear)......................................................................................................169
Installing the 2.5 inch drive backplane (rear)........................................................................................................169
Cable routing..............................................................................................................................................................171
System battery............................................................................................................................................................... 184
Replacing the system battery................................................................................................................................. 184
6Contents

Internal USB memory key (optional)............................................................................................................................185
Replacing optional internal USB memory key....................................................................................................... 186
Power supply units......................................................................................................................................................... 186
Hot spare feature......................................................................................................................................................187
Removing a power supply unit blank......................................................................................................................187
Installing a power supply unit blank........................................................................................................................188
Removing a power supply unit................................................................................................................................188
Installing a power supply unit.................................................................................................................................. 189
Wiring instructions for a DC power supply unit....................................................................................................190
System board.................................................................................................................................................................. 192
Removing system board.......................................................................................................................................... 192
Installing system board.............................................................................................................................................193
Trusted Platform Module...............................................................................................................................................196
Replacing the Trusted Platform Module................................................................................................................196
Initializing TPM for BitLocker users........................................................................................................................197
Initializing the TPM 1.2 for TXT users.................................................................................................................... 197
Initializing the TPM 2.0 for TXT users....................................................................................................................197
Control panel................................................................................................................................................................... 197
Removing the left control panel............................................................................................................................. 198
Installing the left control panel................................................................................................................................198
Removing the right control panel...........................................................................................................................199
Installing the right control panel.............................................................................................................................200
7 Using system diagnostics...........................................................................................................................202
Dell Embedded System Diagnostics............................................................................................................................ 202
Running the Embedded System Diagnostics from Boot Manager....................................................................202
Running the Embedded System Diagnostics from the Dell Lifecycle Controller............................................. 202
System diagnostic controls.....................................................................................................................................203
8 Jumpers and connectors ...........................................................................................................................204
System board jumpers and connectors...................................................................................................................... 205
System board jumper settings......................................................................................................................................207
Disabling forgotten password....................................................................................................................................... 207
9 Getting help...............................................................................................................................................209
Contacting Dell...............................................................................................................................................................209
Documentation feedback..............................................................................................................................................209
Accessing system information by using QRL............................................................................................................. 209
Quick Resource Locator for PowerEdge R740 and R740xd systems................................................................210
Receiving automated support with SupportAssist ....................................................................................................210
Contents 7

PowerEdge R740xd system overview
The PowerEdge R740xd is a 2U rack server that supports up to:
• Two Intel Xeon Processor Scalable Family processors
• 24 DIMM slots supporting up to 1536 GB of memory
• Two AC or DC power supply units
• 32 SAS, SATA, Nearline SAS hard drives or SSDs, and up to 24 NVMe drives. For more information about supported drives, see the
Technical specications section.
NOTE: All instances of SAS, SATA hard drives, NVMe and SSDs are referred to as drives in this document, unless specied
otherwise.
Topics:
• Supported congurations
• Front view of the system
• Back view of the system
• Drive indicator codes
• LCD panel
• Locating Service Tag of your system
Related link
Technical specications
Supported congurations
The PowerEdge R740xd system supports the following congurations:
1
8 PowerEdge R740xd system overview

Figure 1. Supported congurations
PowerEdge R740xd system overview 9

Front view of the system
The front view displays the features available on the front of the system.
Figure 2. Front view of 24 x 2.5 inch drive system
Figure 3. Front view of 12 x 3.5 inch drive system
Table 1. Features available on the front of the system
Item Panels and slots Icon Description
1 Left control panel N/A Contains system health and system ID, status LED or optional iDRAC
Quick Sync 2 (wireless).
2 Drives N/A Enable you to install drives that are supported on your system. For
more information about drives, see the Technical specications
section.
3 Right control panel N/A Contains the power button, VGA port, iDRAC Direct micro USB port
and two USB 2.0 ports.
4 Information tag N/A The Information Tag is a slide-out label panel that contains system
information such as Service Tag, NIC, MAC address, and so on. If you
have opted for the secure default access to iDRAC, the Information
tag also contains the iDRAC secure default password.
10 PowerEdge R740xd system overview

Left control panel view
Figure 4. Left control panel view
Table 2. Left control panel features
Item Indicator, button, or
connector
Icon Description
1 Status LED indicators N/A Indicate the status of the system. For more information, see the
Status LED indicators section.
2 System health and system
ID indicator
Indicates the system health. For more information, see the System
health and system ID indicator codes section.
3 iDRAC Quick Sync 2
wireless indicator
(optional)
Indicates if the iDRAC Quick Sync 2 wireless option is activated. The
Quick Sync 2 feature allows management of the system using mobile
devices. This feature aggregates hardware/rmware inventory and
various system level diagnostic/error information that can be used in
troubleshooting the system. You can access system inventory, Dell
Lifecycle Controller logs or system logs, system health status, and
also congure iDRAC, BIOS, and networking parameters. You can also
launch the virtual Keyboard, Video, and Mouse (KVM) viewer and
virtual Kernel based Virtual Machine (KVM), on a supported mobile
device. For more information, see the Integrated Dell Remote Access
Controller User's Guide at Dell.com/idracmanuals.
Related link
Status LED indicators
System health and system ID indicator codes
Status LED indicators
NOTE: The status LED indicators are always o and only turns on to a solid amber if any error
occurs.
PowerEdge R740xd system overview 11

Table 3. Status LED indicators and descriptions
Icon Description Condition Corrective action
Drive indicator The indicator turns solid amber if
there is a drive error. • Check the System Event Log to determine if the drive
has an error.
• Run the appropriate Online Diagnostics test. Restart
the system and run embedded diagnostics (ePSA).
• If the drives are congured in a RAID array, restart the
system, and enter the host adapter conguration
utility program.
Temperature
indicator
The indicator turns solid amber if the
system experiences a thermal error
(for example, the ambient
temperature is out of range or there is
a fan failure).
Ensure that none of the following conditions exist:
• A cooling fan has been removed or has failed.
• System cover, air shroud, memory module blank, or
back ller bracket is removed.
• Ambient temperature is too high.
• External airow is obstructed.
If the problem persists, see the Getting help section.
Electrical indicator The indicator turns solid amber if the
system experiences an electrical error
(for example, voltage out of range, or
a failed power supply unit (PSU) or
voltage regulator).
Check the System Event Log or system messages for the
specic issue. If it is due to a problem with the PSU,
check the LED on the PSU. Reseat the PSU. If the
problem persists, see the Getting help section.
Memory indicator The indicator turns solid amber if a
memory error occurs.
Check the System Event Log or system messages for the
location of the failed memory. Reseat the memory
module. If the problem persists, see the Getting help
section.
PCIe indicator The indicator turns solid amber if a
PCIe card experiences an error.
Restart the system. Update any required drivers for the
PCIe card. Reinstall the card. If the problem persists, see
the Getting help section.
NOTE: For more information about the
supported PCIe cards, see the Expansion card
installation guidelines section.
Related link
Getting help
Expansion card installation guidelines
System health and system ID indicator codes
The system health and system ID indicator is located on the left control panel of your system.
Figure 5. System health and system ID indicators
12 PowerEdge R740xd system overview

Table 4. System health and system ID indicator codes
System health and system ID indicator code Condition
Solid blue Indicates that the system is turned on, system is healthy, and system
ID mode is not active. Press the system health and system ID button
to switch to system ID mode.
Blinking blue Indicates that the system ID mode is active. Press the system health
and system ID button to switch to system health mode.
Solid amber Indicates that the system is in fail-safe mode. If the problem persists,
see the Getting help section.
Blinking amber Indicates that the system is experiencing a fault. Check the System
Event Log or the LCD panel, if available on the bezel, for specic error
message. For more information about error messages, see the Dell
Event and Error Messages Reference Guide at Dell.com/
openmanagemanuals > OpenManage software.
Related link
Getting help
iDRAC Quick Sync 2 indicator codes
iDRAC Quick Sync 2 module (optional) is located on the left control panel of your system.
Figure 6. iDRAC Quick Sync 2 indicators
Table 5. iDRAC Quick Sync 2 indicators and descriptions
iDRAC Quick Sync 2 indicator
code
Condition Corrective action
O (default state) Indicates that the iDRAC Quick Sync 2
feature is turned o. Press the iDRAC Quick
Sync 2 button to turn on the iDRAC Quick
Sync 2 feature.
If the LED fails to turn on, reseat the left control panel
ex cable and check again. If the problem persists,
see the Getting help section.
Solid white Indicates that iDRAC Quick Sync 2 is ready
to communicate. Press the iDRAC Quick
Sync 2 button to turn o.
If the LED fails to turn o, restart the system. If the
problem persists, see the Getting help section.
Blinks white rapidly Indicates data transfer activity. If the indicator continues to blink indenitely, see the
Getting help section.
Blinks white slowly Indicates that rmware update is in
progress.
If the indicator continues to blink indenitely, see the
Getting help section.
Blinks white ve times rapidly and
then turns o
Indicates that the iDRAC Quick Sync 2
feature is disabled.
Check if iDRAC Quick Sync 2 feature is congured to
be disabled by iDRAC. If the problem persists, see the
Getting help section. For more information, see
Integrated Dell Remote Access Controller User's
PowerEdge R740xd system overview 13

iDRAC Quick Sync 2 indicator
code
Condition Corrective action
Guide at Dell.com/idracmanuals or Dell
OpenManage Server Administrator User’s Guide at
Dell.com/openmanagemanuals.
Solid amber Indicates that the system is in fail-safe
mode.
Restart the system. If the problem persists, see the
Getting help section.
Blinking amber Indicates that the iDRAC Quick Sync 2
hardware is not responding properly.
Restart the system. If the problem persists, see the
Getting help section.
Related link
Getting help
Right control panel view
Figure 7. Right control panel view
Table 6. Right control panel features
Item Indicator, button, or
connector
Icon Description
1 Power button Indicates if the system is turned on or o. Press the power button to
manually turn on or o the system.
NOTE: Press the power button to gracefully shut down an
ACPI-compliant operating system.
2 USB port (2) The USB ports are 4-pin, 2.0-compliant. These ports enable you to
connect USB devices to the system.
3 iDRAC Direct port The iDRAC Direct port is micro USB 2.0-compliant. This port enables
you to access the iDRAC Direct features. For more information, see
the iDRAC User’s Guide at Dell.com/idracmanuals.
4 iDRAC Direct LED N/A The iDRAC Direct LED indicator lights up to indicate that the iDRAC
Direct port is connected. For more information, see the iDRAC Direct
LED indicator codes section.
14 PowerEdge R740xd system overview

Item Indicator, button, or
connector
Icon Description
5 VGA port Enables you to connect a display device to the system. For more
information, see the Technical specications section.
Related link
iDRAC Direct LED indicator codes
Technical specications
iDRAC Direct LED indicator codes
The iDRAC Direct LED indicator lights up to indicate that the port is connected and is being used as a part of the iDRAC subsystem.
iDRAC Direct LED indicator is located below the iDRAC Direct port on the right control panel.
You can congure iDRAC Direct by using a USB to micro USB (type AB) cable, which you can connect to your laptop or tablet. The
following table describes iDRAC Direct activity when the iDRAC Direct port is active:
Table 7. iDRAC Direct LED indicator codes
iDRAC Direct LED
indicator code
Condition
Solid green for two seconds Indicates that the laptop or tablet is connected.
Flashing green (on for two
seconds and o for two
seconds)
Indicates that the laptop or tablet connected is recognized.
Turns o Indicates that the laptop or tablet is unplugged.
Back view of the system
Figure 8. Back view of 4 x 2.5 inch drive system
PowerEdge R740xd system overview 15

Figure 9. Back view of 2 x 3.5 inch drive system
Table 8. Features available on the back view
Item Panels, ports and slots Icon Description
1 Full-height PCIe expansion
card slot (3)
N/A The PCIe expansion card slot (riser 1) connects up to three full-height
PCIe expansion cards to the system. For more information, see the
Expansion card installation guidelines section.
2 Half-height PCIe expansion
card slot
N/A The PCIe expansion card slot (riser 2) connects one half-height PCIe
expansion cards to the system. For more information, see the Expansion
card installation guidelines section.
3 Rear handle N/A The rear handle can be removed to enable any external cabling of PCIe
cards that are installed in the PCIe expansion card slot 6.
4 Drives N/A Enable you to install drives that are supported on your system. For more
information about drives, see the Technical specications section.
4 Power supply unit (2) N/A For more information, see the Technical specications section.
6 NIC ports The NIC ports that are integrated on the network daughter card (NDC)
provide network connectivity. For more information about the supported
congurations, see the Technical specications section.
7 USB port (2) The USB ports are 9-pin and 3.0-compliant. These ports enable you to
connect USB devices to the system.
8 VGA port Enables you to connect a display device to the system. For more
information, see the Technical specications section.
9 Serial port Enables you to connect a serial device to the system. For more
information, see the Technical specications section.
10 iDRAC9 dedicated port Enables you to remotely access iDRAC. For more information, see the
iDRAC User’s Guide at Dell.com/idracmanuals.
11 System identication button The System Identication (ID) button is available on the front and back of
the systems. Press the button to identify a system in a rack by turning on
the system ID button. You can also use the system ID button to reset
iDRAC and to access BIOS using the step through mode.
16 PowerEdge R740xd system overview

NIC indicator codes
Each NIC on the back panel has indicators that provide information about the activity and link status. The activity LED indicator indicates if
data is owing through the NIC, and the link LED indicator indicates the speed of the connected network.
Figure 10. NIC indicator codes
1 link LED indicator 2 activity LED indicator
Table 9. NIC indicator codes
Status Condition
Link and activity indicators are o The NIC is not connected to the network.
Link indicator is green and activity indicator is blinking green The NIC is connected to a valid network at its maximum port speed and
data is being sent or received.
Link indicator is amber and activity indicator is blinking
green
The NIC is connected to a valid network at less than its maximum port
speed and data is being sent or received.
Link indicator is green and activity indicator is o The NIC is connected to a valid network at its maximum port speed and
data is not being sent or received.
Link indicator is amber and activity indicator is o The NIC is connected to a valid network at less than its maximum port
speed and data is not being sent or received.
Link indicator is blinking green and activity is o NIC identify is enabled through the NIC conguration utility.
Power supply unit indicator codes
AC power supply units (PSUs) have an illuminated translucent handle that serves as an indicator and DC PSUs have an LED that serves as
an indicator. The indicator shows whether power is present or a power fault has occurred.
Figure 11. AC PSU status indicator
1AC PSU status indicator/handle
PowerEdge R740xd system overview 17

Table 10. AC PSU status indicator codes
Power indicator codes Condition
Green A valid power source is connected to the PSU and the PSU is operational.
Blinking amber Indicates a problem with the PSU.
Not illuminated Power is not connected to the PSU.
Blinking green When the rmware of the PSU is being updated, the PSU handle blinks green.
CAUTION: Do not disconnect the power cord or unplug the PSU when updating rmware. If
rmware update is interrupted, the PSUs do not function.
Blinking green and turns o When hot-plugging a PSU, the PSU handle blinks green ve times at a rate of 4 Hz and turns o. This
indicates a PSU mismatch with respect to eciency, 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 turn the system on.
CAUTION: When correcting a PSU mismatch, replace only the PSU with the blinking indicator.
Swapping the PSU to make a matched pair can result in an error condition and unexpected
system shutdown. To change from a high output conguration to a low output conguration or
vice versa, you must turn o 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 dierent input voltages, they
can output dierent wattages, and trigger a mismatch.
CAUTION: If two PSUs are used, they must be of the same type and have the same maximum
output power.
CAUTION: Combining AC and DC PSUs is not supported and triggers a mismatch.
Figure 12. DC PSU status indicator
1DC PSU status indicator
18 PowerEdge R740xd system overview

Table 11. DC PSU status indicator codes
Power indicator codes Condition
Green A valid power source is connected to the PSU and the PSU is operational.
Blinking amber Indicates a problem with the PSU.
Not illuminated Power is not connected to the PSU.
Blinking green When hot-plugging a PSU, the PSU indicator blinks green. This indicates that there is a PSU mismatch
with respect to eciency, 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 turn the system on.
CAUTION: When correcting a PSU mismatch, replace only the PSU with the blinking
indicator. Swapping the PSU to make a matched pair can result in an error condition and
unexpected system shutdown. To change from a High Output conguration to a Low Output
conguration or vice versa, you must turn o the system.
CAUTION: If two PSUs are used, they must be of the same type and have the same
maximum output power.
CAUTION: Combining AC and DC PSUs is not supported and triggers a mismatch.
Drive indicator codes
Each drive carrier has an activity LED indicator and a status LED indicator. The indicators provide information about the current status of
the drive. The activity LED indicator indicates whether the drive is currently in use or not. The status LED indicator indicates the power
condition of the drive.
Figure 13. Drive indicators on the drive and the mid drive tray backplane
1drive activity LED indicator 2 drive status LED indicator
3 drive backplane on mid drive tray 4 drive
PowerEdge R740xd system overview 19

NOTE: If the drive is in the Advanced Host Controller Interface (AHCI) mode, the status LED indicator does not turn on.
Table 12. Drive indicator codes
Drive status indicator code Condition
Flashes green twice per second Identifying drive or preparing for removal.
O Drive ready for removal.
NOTE: The drive status indicator remains o until all drives are
initialized after the system is turned on. Drives are not ready
for removal during this time.
Flashes green, amber, and then turns o Predicted drive failure.
Flashes amber four times per second Drive failed.
Flashes green slowly Drive rebuilding.
Solid green Drive online.
Flashes green for three seconds, amber for three seconds, and
then turns o after six seconds
Rebuild stopped.
LCD panel
The LCD panel provides system information, status, and error messages to indicate if the system is functioning correctly or requires
attention. The LCD panel can be used to congure or view the system’s iDRAC IP address. For more information about error messages, see
the Dell Event and Error Messages Reference Guide at Dell.com/openmanagemanuals > OpenManage software.
The LCD panel is available only on the optional LCD bezel. The optional LCD bezel is hot pluggable.
The statuses and conditions of the LCD panel are outlined here:
• The LCD backlight is white during normal operating conditions.
• When the system needs attention, the LCD backlight turns amber, and displays an error code followed by descriptive text.
NOTE: If the system is connected to a power source and an error is detected, the LCD turns amber regardless of whether
the system is turned on or o.
• When the system turns o and there are no errors, LCD enters the standby mode after ve minutes of inactivity. Press any button on
the LCD to turn it on.
• If the LCD panel stops responding, remove the bezel and reinstall it. If the problem persists, see the Getting help section.
• The LCD backlight remains o if LCD messaging is turned o using the iDRAC utility, the LCD panel, or other tools.
Figure 14. LCD panel features
20 PowerEdge R740xd system overview