Dell 4691901 owner manual Controls and Lights

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System Board Connectors

Mini-Tower, Desktop	two 3-pin connector
Small Form Factor	one 5-pin connector
Front panel control	one 16-pin, two 10–pin, and one 5-pin connector
Processor	one 1155-pin connector
Processor Fan
Mini-Tower, Desktop	one 4-pin connector
Small Form Factor	one 5-pin connector
Password clear jumper	one 3-pin connector
RTC reset jumper	one 3-pin connector
Internal speaker	one 5-pin connector
Intruder connector	one 3-pin connector
Power connector	one 24-pin and one 4-pin connector

Controls and Lights

Front of the computer:
Power button light	Blue light — Solid blue light indicates power-on
	state; blinking blue light indicates sleep state of
	the computer.
	Amber light — Solid amber light when the
	computer does not start indicates a problem
	with the system board or power supply. Blinking
	amber light indicates a problem with the system
	board.
Drive activity light	Blue light — Blinking blue light indicates that the
	computer is reading data from or writing data to
	the hard drive.
Diagnostic lights	Four lights located on the front panel of the
	computer. For more information on the
	diagnostic lights, see the Service Manual at
	support.dell.com/manuals.
Back of the computer:
Power supply diagnostic light	Green light — The power supply is turned on
	and is functional. The power cable must be
	connected to the power connector (at the back
	of the computer) and the electrical outlet.

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Contents Regulatory Model D07D Regulatory Type D07D001 Dell Inc Contents System Setup TroubleshootingSpecifications Contacting DellPage Working on Your Computer Before Working Inside Your ComputerTurning Off Your Computer After Working Inside Your ComputerRemoving the Cover Installing The CoverRelated Links Removing the Front Bezel Installing The Front BezelRemoving the Expansion Card Page Installing The Expansion Card Removing the Optical DriveInstalling The Optical Drive Removing the Hard DrivePage Installing The Hard Drive Removing the MemoryInstalling The Memory Removing the Chassis Intrusion SwitchInstalling The Chassis Intrusion Switch Removing The SpeakerInstalling The Speaker Removing The Heat Sink and Processor Installing The Heat Sink and Processor Installing The Coin-Cell Battery Removing The Coin-Cell BatteryRemoving The Power-Switch Cable Installing The Power-Switch Cable Removing The Front Thermal Sensor Installing The Front Thermal Sensor Removing The System FanInstalling The System Fan Installing The System Fan Removing The Input/Output PanelDisconnect the 4-pin power cable from the system board Installing The Input/Output PanelRemoving The Power Supply Remove the Input/Output panelPage Installing The Power Supply Removing the System Board Remove the expansion cardsRemoving The PSU Thermal Sensor Installing the System BoardRemove the system board from the chassis Installing The PSU Thermal Sensor Boot Menu Enhancements System SetupBoot Menu CtrlAltF8 One-time boot and diagnostics utility menu F12Navigation Beep Codes and Text Error MessagesTiming Key Sequences Action KeystrokeSystem Setup Options Security They are set. This option is disabled by default Password BypassPassword prompts during a system restart Password ChangesPower Management PerformancePost Behavior Enable F12 Boot menu enabled by defaultMaintenance Virtualization SupportSystem Logs Diagnostic Light Patterns Diagnostic LEDsPower Button Troubleshooting Steps If the problem persists, the system board is faulty Re-seat the 2x2 power connector from the power supply unitPower Button Problem Description Possible system board failure has occurredReinstalled all modules without error Problem Description Troubleshooting Steps Beep Codes Code Cause Microprocessor register failureCode Through Cause Code Cause DMA initialization failureCode Cause Code Cause No time tick Shutdown failure Gate A20 failure Error MessagesAddress mark not found Code Cause Time-of-day clock stoppedBad error-correction code ECC on disk read Alert! Security override Jumper is installedBad command or file name Data errorDiskette drive 0 seek failure Diskette subsystem reset failedHard-disk drive configuration error Diskette read failureMemory allocation error Invalid configuration information-please run Setup programInvalid Memory configuration, please populate DIMM1 Keyboard failureNo timer tick interrupt No boot device availableNo boot sector on hard-disk drive Non-system disk or disk errorSeek error Read faultReset failed Time-of-day not set-please run the System Setup programWrite fault on selected drive Unexpected interrupt in protected modeWrite fault \ is not accessible. The device is not ready Processor Specification System Information MemoryExpansion Bus AudioNetwork CardsMini-Tower Two Desktop One Small Form Factor External ConnectorsSystem Board Connectors Audio Back Panel Mini-Tower/DesktopControls and Lights Physical Height Width Depth Weight EnvironmentalPage Contacting Dell Visit support.dell.com