Dell Latitude E7270 Owner's Manual

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Dell Latitude E7270 Owner's Manual Manual pdf 55 page image

Table 2. Battery charge LED indicatorAmber blinking pattern Problem description Suggested resolution2,1 CPU CPU failure2,2 System board: BIOS ROM System board, covers BIOS corruption or ROM 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 failure3,3 BIOS Recovery 1 Recovery image not found3,4 BIOS Recovery 2 Recovery image found but invalidThe blinking patterns will consist of 2 set of numbers being represented by (First Group: Amber blinks, Second Group: White blinks)NOTE:1. First Group: The LED blinks 1 to 9 times followed by a brief pause with LED off at the interval of 1.5 seconds.(This is inAmber color)2. Second Group: The LED blinks 1 to 9 times, that would be then followed by a longer pause before the next cycle startsagain at the interval of 1.5 seconds.(This is in White color)For Example: No Memory detected (2,3), Battery LED blinks two times of amber color followed by a pause, and then blinks threetimes of white color. The Battery LED will pause for 3 seconds before the next cycle repeat itself again.Battery status lightsIf the computer is connected to an electrical outlet, the battery light operates as follows:Alternately blinkingamber light andwhite lightAn unauthenticated or unsupported non-Dell AC adapter is attached to your laptop.Alternately blinkingamber light withsteady white lightTemporary battery failure with AC adapter present.Constantly blinkingamber lightFatal battery failure with AC adapter present.Light off Battery in full charge mode with AC adapter present.White light on Battery in charge mode with AC adapter present.55