Dell Latitude E6420 Owners Manual - Page 142

Battery Status Lights, No SODIMMs are - laptop

Page 142 highlights

Appearance Description Next Step Blinki Off Blinki USB controller ng ng error Unplug the USB device (if any) Solid Blinki Blinki No SODIMMs are ng ng installed 1. Install supported memory modules. 2. If memory is already present, re-seat the module(s) one at a time in each slot. 3. Try known good memory from another computer or replace the memory. 4. Replace the system board. Blinki Solid Blinki Display panel ng ng error 1. Re-seat the display cable. 2. Replace the display panel. 3. Replace the video card/ system board. Off Blinki Blinki Modem error ng ng 1. Re-seat the modem. 2. Replace the modem. 3. Replace the system board. Battery Status Lights If the computer is connected to an electrical outlet, the battery light operates as follows: • Alternately blinking amber light and blue light - An unauthenticated or unsupported non-Dell AC adapter is attached to your laptop. • Alternately blinking amber light with steady blue light - Temporary battery failure with AC adapter present. • Constantly blinking amber light - Fatal battery failure with AC adapter present. • Light off - Battery in full charge mode with AC adapter present. • Blue light on - Battery in charge mode with AC adapter present. 142

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Appearance
Description
Next Step
Blinki
ng
Off
Blinki
ng
USB controller
error
Unplug the USB device (if any)
Solid
Blinki
ng
Blinki
ng
No SODIMMs are
installed
1. Install supported memory
modules.
2. If memory is already present,
re-seat the module(s) one at a
time in each slot.
3. Try known good memory from
another computer or replace
the memory.
4. Replace the system board.
Blinki
ng
Solid
Blinki
ng
Display panel
error
1. Re-seat the display cable.
2. Replace the display panel.
3. Replace the video card/
system board.
Off
Blinki
ng
Blinki
ng
Modem error
1. Re-seat the modem.
2. Replace the modem.
3. Replace the system board.
Battery Status Lights
If the computer is connected to an electrical outlet, the battery light operates as
follows:
Alternately blinking amber light and blue light
— An unauthenticated or
unsupported non-Dell AC adapter is attached to your laptop.
Alternately blinking amber light with steady blue light
— Temporary battery
failure with AC adapter present.
Constantly blinking amber light
— Fatal battery failure with AC adapter
present.
Light off
— Battery in full charge mode with AC adapter present.
Blue light on
— Battery in charge mode with AC adapter present.
142