Dell Latitude E7470 Owner's Manual

Also see for Latitude E7470: How-to guide Owner's manual

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Dell Latitude E7470 Owner's Manual Manual pdf 47 page image

Device status lightsTable 2. Device status lightsIcon Name DescriptionPowerstatuslightTurns on when you turn on the computer and blinks when the computer is in apower management mode.HarddrivestatuslightTurns on when the computer reads or writes data.BatterychargeindicatorTurns on steadily or blinks to indicate battery charge status.NOTE: Refer to the following table for Battery charge LED indicator codes.WiFiindicatorTurns on when wireless networking is enabled.The device status LEDs are usually located either on the top or left side of the keyboard. They display thestorage, battery and wireless devices connectivity and activity. Apart from that they can be useful as adiagnostic tool when there's a possible failure to the system.NOTE: The position of the power status light may vary depending on the system.The following table lists how to read the LED codes when possible errors occur.Table 3. Battery charge LED indicatorAmber blinkingpattern Problem description Suggested resolution2,1 CPU CPU failure2,2 System board: BIOS ROM System board, covers BIOS corruption orROM error2,3 Memory No memory/RAM detected2,4 Memory Memory/RAM failure2,5 Memory Invalid memory installed2,6 System board: Chipset System board / Chipset error2,7 LCD Replace the system board3,1 RTC Power Failure CMOS battery failure3,2 PCI/Video PCI or video card/chip failureThe blinking patterns will consist of 2 set of numbers being represented by (First Group: Amber blinks,Second Group: White blinks)47