Dell Latitude 9420 - Page 84

Indicates the power and battery-charge status.
Solid white — Power adapter is connected and the battery has more than 5 percent charge.
Amber — Computer is running on battery and the battery has less than 5 percent charge.
Off
● Power adapter is connected and the battery is fully charged.
● Computer is running on battery and the battery has more than 5 percent charge.
● Computer is in sleep state, hibernation, or turned off.
The power and battery-status light blinks amber along with beep codes indicating failures.
For example, the power and battery-status light blinks amber two times followed by a pause, and then blinks white three times
followed by a pause. This 2,3 pattern continues until the computer is turned off indicating no memory or RAM is detected.
The following table shows different power and battery-status light patterns and associated problems.
Blinking Pattern Problem description Suggested resolution
1 1 TPM detection failure Replace the system board.
1 2 Unrecoverable SPI flash failure Replace the system board.
1 5 EC unable to program i-Fuse Replace the system board.
1 6 Generic catch-all for ungraceful
EC code flow errors
Disconnect all power source
(AC, battery, coin cell)
and drain flea power by
pressing & holding down
power button.
2 1 CPU failure Run the Intel CPU
diagnostics tools. If problem
persists, replace the system
board.
2 2 System Board failure (included
BIOS corruption or ROM error)
Flash latest BIOS version.
If problem persists, replace
the system board.
2 3 No Memory / RAM detected Memory is integrated,
replace the system board
2 4 Memory / RAM failure Memory is integrated,
replace the system board
2 5 Invalid memory installed Memory is integrated,
replace the system board
2 6 System board / Chipset Error Replace the system board.
2 7 LCD failure (SBIOS message) Replace the LCD module.
2 8 LCD failure (EC detection of
power rail failure)
Replace the system board.
3 1 CMOS battery failure Reset the CMOS battery
connection. If problem
persists, replace the RTC
battery.
3 2 PCI or Video card/chip failure Replace the system board.
3 3 BIOS recovery image not found Flash latest BIOS version.
If problem persists, replace
the system board.
3 4 BIOS recovery image found but
invalid
Flash latest BIOS version.
If problem persists, replace
the system board.
3 5 Power rail failure Replace the system board.
84 Troubleshooting