Owners Manual
Table Of Contents
- About Your System
- Accessing System Features During Startup
- Front-Panel Features and Indicators
- LCD Panel Features
- Hard-Drive Indicator Patterns for RAID
- Back Panel Features and Indicators
- Power Indicator Codes
- NIC Indicator Codes
- LCD Status Messages
- System Messages
- Warning Messages
- Diagnostics Messages
- Alert Messages
- Other Information You May Need
- Using the System Setup Program and UEFI Boot Manager
- Installing System Components
- Recommended Tools
- Inside the System
- Front Bezel (Optional)
- Information Tag
- Opening and Closing the System
- Hard Drives
- Power Supplies
- Internal SD Module
- Internal SD Flash Card
- Internal USB Memory Key
- Internal USB Cable
- Integrated Dell Remote Access Controller 6 (iDRAC6) Enterprise Card (Optional)
- VFlash Media (Optional)
- NIC Hardware Key
- Cooling Shroud
- Cooling Fans
- Optical Drive
- Integrated Storage Controller Card
- RAID Battery
- Cable Routing
- Expansion Cards and Expansion-Card Risers
- Expansion Card Installation Guidelines
- Installing an Expansion Card
- Removing an Expansion Card
- Removing Expansion-Card Riser 1
- Replacing Expansion-Card Riser 1
- Removing Expansion-Card Riser 2
- Replacing Expansion-Card Riser 2
- Removing Expansion-Card Riser 2 From the Expansion-Card Bracket
- Replacing the Riser 2 Board on the Expansion-Card Bracket
- System Memory
- Processors
- System Battery
- Control Panel Assembly
- SAS Backplane (Service Only Procedure)
- System Board
- Troubleshooting Your System
- Safety First-For You and Your System
- Troubleshooting System Startup Failure
- Troubleshooting External Connections
- Troubleshooting the Video Subsystem
- Troubleshooting a USB Device
- Troubleshooting a Serial I/O Device
- Troubleshooting a NIC
- Troubleshooting a Wet System
- Troubleshooting a Damaged System
- Troubleshooting the System Battery
- Troubleshooting Power Supplies
- Troubleshooting System Cooling Problems
- Troubleshooting a Fan
- Troubleshooting System Memory
- Troubleshooting an Internal SD Card
- Troubleshooting an Internal USB Memory Key
- Troubleshooting an Optical Drive
- Troubleshooting a Hard Drive
- Troubleshooting a Storage Controller
- Troubleshooting Expansion Cards
- Troubleshooting the Processor
- Running the System Diagnostics
- Jumpers and Connectors
- Getting Help
- Index

About Your System 53
Unsupported
memory
configuration.
DIMM mismatch
across slots
detected:
x,x,...
Invalid memory
configuration. Memory
modules are mismatched in
the specified slots.
Ensure that the memory
modules are installed in a
valid configuration. See
"General Memory Module
Installation Guidelines" on
page 131.
Unused memory
detected. DIMM’s
installed in the
following slot
are not available
when in mirror or
128-bit advanced
ECC modes: x,x,x
The memory configuration is
not optimal for mirroring or
Advanced ECC Memory
Mode. Modules in the
specified slots are unused.
Reconfigure the memory for
Memory Mirroring or
Advanced ECC Memory
Mode, or change the memory
mode to Optimized in the
BIOS setup screen. See
"System Memory" on
page 130.
Warning: A fatal
error has caused
system reset!
Please check the
system event log!
A fatal system error occurred
and caused the system to
reboot.
Check the SEL for
information that was logged
during the error. See the
applicable troubleshooting
section in "Troubleshooting
Your System" on page 155 for
any faulty components
specified in the SEL.
Warning: Control
Panel is not
installed.
The control panel is not
installed or has a faulty cable
connection.
Install the control panel, or
check the cable connections
between the display module,
the control panel board, and
the system board. See
"Control Panel Assembly" on
page 145.
Warning! No micro
code update
loaded for
processor n.
Micro code update failed. Update the BIOS firmware.
See "Getting Help" on
page 189.
Table 1-2. System Messages
(continued)
Message Causes Corrective Actions