Diagnostic Lights | Dell T110 specs

Diagnostic Lights

The four diagnostic indicator lights on the system front panel display error codes during system startup. Table 1-2 lists the causes and possible corrective actions associated with these codes. A highlighted circle indicates the light is on; a non-highlighted circle indicates the light is off.

Table 1-2. Diagnostic Indicator Code

Code

Causes

Corrective Action

The system is in a normal off condition or a possible pre-BIOS failure has occurred.

The diagnostic lights are not lit after the system successfully boots to the operating system.

Plug the system into a working electrical outlet and press the power button.

	The system is in a normal	Information only.
	operating condition after
	POST.

	BIOS checksum failure	See "Getting Help" on page 129.
	BIOS checksum failure	See "Getting Help" on page 129.
	detected; system is in
	recovery mode.

	Possible processor failure. See "Troubleshooting the
		Processor" on page 119.

	Memory failure.	See "Troubleshooting System
		Memory" on page 113.

	Possible expansion card	See "Troubleshooting Expansion
	failure.	Cards" on page 118.

	Possible video failure.	See "Getting Help" on page 129.

18

About Your System

Image 18

Dell T110 owner manual Diagnostic Lights

Contents

Dell PowerEdge T110 Systems August Contents Processor Settings Screen Entering the Uefi Boot Manager Using the Uefi Boot ManagerUefi Boot Settings Screen Entering the BMC Setup Module Opening and Closing the System Removing a Hard Drive from a Hard Drive Installation GuidelinesRemoving the Cooling Shroud Installing the Cooling Shroud General Memory Module Removing the Cooling Fan Replacing the System BatteryRemoving the Power Supply Installing the Power Supply 101 121 Troubleshooting a Serial I/O Device 107System Diagnostics Testing Options 122 Contents 122 Jumpers and Connectors Disabling a Forgotten Password Contents Accessing System Features During Startup Front-Panel Features and Indicators Amber when a system fault is detected Back-Panel Features and Indicators Switch Voltage that most closely matches Guidelines for Connecting External Devices NIC Indicator Codes NIC Indicator Codes Link indicator Power Selection Power Selection Switch Diagnostic Lights Resource and/or system Board hardware failure Configuration error Other failureSystem. If the problem persists Hard drives are properly System Messages By the power supply Boots without this warning System configuration If any system componentsConfiguration. If the system Supported with this power System Setup Program Installed in the clearSetting. Cmos has been If not an intentional setting Keyboard cable connector Troubleshooting a USBFaulty keyboard controller See Getting Help on Problem persists, see Setup program to enable Power down and restartSystem Bios System Setup Program on Frequency Memory Module Installation Guidelines on Memory frequency If not an intentional settingLower for power Configuration. a Setting the order of boot Faulty or missing opticalOr hard drive. If the problem No boot sector on Incorrect configuration Configuration Error encountered Install the NvramclrTroubleshooting Expansion Drive connected to Replace the faulty drive Device on page 106 or General system error See Getting Help onDevice or medium Device. Ensure that the USB Removed or a memory Removed, this message is Settings faulty system Settings. See Using Configuration.Faulty battery or faulty See Troubleshooting Number of data lanes Reboot and execute Command TPM configurationCommand has been Command has been To Ignore or entered. User interaction is Fatal system error Configuration. MemorySpecified slots Memory Module Installation System to reboot Functionality Memory Module Installation By the power supplies Boots without this warningWill run but with reduced Configuration. See General Troubleshooting System Diagnostics Messages Alert MessagesOther Information You May Need About Your System Using the System Setup Program and Uefi Boot Manager Choosing the System Boot Mode Using the System Setup Program Navigation Keys Entering the System Setup ProgramResponding to Error Messages System if any changes were made System Setup Options Main Screen Sata Settings Option Description Memory SettingsMemory Settings Screen on Boot Settings Memory Settings Screen Processor Settings Screen Sata Settings Screen Boot Settings Screen Manually set the emulation type to Floppy Boot Sequence RetryIntegrated Devices Screen With PXE PCI IRQ Assignments Screen Serial Communication Screen Power Management Screen System Security Screen Power Button TPM Clear No defaultWhen set to Yes, all TPM contents are cleared When Disabled, the button can only turn on system Uefi Boot Manager enables you to Entering the Uefi Boot ManagerUsing the Uefi Boot Manager Navigation Keys To enter the Uefi Boot Manager Uefi Boot Manager Screen Uefi Boot Settings Screen System and Setup Password Features Using the System PasswordSystem Utilities Screen Verify that Password Status is Unlocked To disable the password security Using the Setup Password Deleting or Changing an Existing Setup Password Embedded System Management Baseboard Management Controller Configuration Entering the BMC Setup Module Installing System Components Recommended ToolsWrist grounding strap Inside the System Opening and Closing the System Opening the System Closing the System Opening and Closing the System Release tab Front Bezel Removing the Front Bezel Installing the Front Bezel Removing Front Bezel Insert Removing an EMI Filler Panel Installing Front Bezel InsertEMI Filler Panel Tab Installing an EMI Filler Panel EMI filler panel Tab Optical and Tape Drives Optional Removing an Optical or Tape Drive Tape drive shoulder screws Drive bay screw slots Optical drive Installing an Optical or Tape Drive Installing Drive Shoulder Screws Shoulder screws Hard Drive Installation Guidelines Hard DrivesRemoving a Hard Drive Removing or Installing a Hard Drive Hard drive Tabs Installing a Hard Drive Removing a Hard Drive from a Hard-Drive Bracket SAS controller card Installing the Expansion Card Stabilizer Expansion Card StabilizerRemoving the Expansion Card Stabilizer Cooling Shroud Removing the Cooling Shroud Installing the Cooling Shroud Expansion Card Installation Guidelines Expansion Cards Removing an Expansion Card See -1 for the location of the expansion card slots Installing System Components Installing an Expansion Card Expansion-card latch Release tab Expansion-card slots SAS Controller Expansion Card General Memory Module Installation Guidelines System MemoryMode-Specific Guidelines Sample Udimm Memory Configurations Removing Memory Modules Installing Memory Modules Alignment key Installing System Components Processor Removing the Processor 15. Installing and Removing the Heat Sink Heat sink ZIF socket Installing a Processor Cooling Fan Removing the Cooling FanYour system has one cooling fan Installing the Cooling Fan 17. Removing and Installing the Cooling Fan Release tab System Battery Replacing the System Battery 18. Replacing the System Battery System battery Power Supply Removing the Power Supply Installing the Power Supply 19. Removing the Power Supply Power supply Screws Cable clip Internal USB Memory Key Chassis Intrusion Switch Removing the Chassis Intrusion Switch Installing the Chassis Intrusion Switch Intrusion connector Control Panel Assembly Removing the Control Panel Assembly 22. Removing the Link Bracket Lock Link bracket lock Installing the Control Panel Assembly 100Control panel cable Standoff System Board Removing the System Board101 Installing the System Board 102 103 104 Troubleshooting External Connections Troubleshooting Your System105 Troubleshooting the Video Subsystem Troubleshooting a USB Device106 Troubleshooting a Serial I/O Device Troubleshooting a NIC107 Troubleshooting a Wet System 108 Troubleshooting a Damaged System 109 Troubleshooting the System Battery 110 Ensure that none of the following conditions exist Troubleshooting Power SupplyTroubleshooting System Cooling Problems 111 Troubleshooting Cooling Fan 112 Troubleshooting System Memory 113 Troubleshooting an Internal USB Key 114 Troubleshooting an Optical Drive 115 Troubleshooting a Tape Backup Unit 116 Troubleshooting a Hard Drive 117 Troubleshooting Expansion Cards 118 Troubleshooting the Processor 119 120 Running the System Diagnostics Using Online DiagnosticsEmbedded System Diagnostics Features 121 System Diagnostics Testing Options When to Use the Embedded System DiagnosticsRunning the Embedded System Diagnostics Click the testing option in the Main Menu window Selecting Diagnostics Options Using the Custom Test OptionsSelecting Devices for Testing 123 Viewing Information and Results 124 System Board Jumper 125 Video connector System Board Jumpers and Connectors DescriptionSataf eSATA ESATA connector 126 127 Disabling a Forgotten Password 128 Contacting Dell 129Getting Help 130 131 Amperes AC Alternating currentGlossary 132 CPU Central processing unit. See processor DC Direct current 133 134 135 Mm Millimeters Ms Milliseconds 136 System TCP/IP Transmission Control Protocol/Internet Protocol 137System memory See RAM TOE TCP/IP offload engine Glossary 138 When to use DVD drive. See CD/DVD drive139 Index Post 141 Panel, 100 power supply, 94 system battery, 91 system board System utilities screen, 49 Uefi Boot Settings screen 143 144