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System-diagnostic lights
This section lists the system-diagnostic lights of your Latitude 5350/Latitude 5350 2-in-1.
Power and battery-status light
The power and battery status light indicates the power and battery status of the computer. These are the power states:
Solid white: Power adapter is connected and the battery is charging.
Sold amber: Battery charge is low or critical.
Off: Battery is fully charged.
● Power adapter is connected, and the battery is fully charged.
● Computer is running on battery, and the battery has more than 5% charge.
● Computer is in sleep state, hibernation, or turned off.
The power and battery-status light may blink amber or white according to pre-defined "beep codes" indicating various 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.
Table 56. System-diagnostic lights
Amber
1
1
1
1
2
2
2
2
2
2
2
2
3
3
3
3
3
3
3
NOTE:
Blinking 3-3-3 LEDs on Lock LED (Caps-Lock or Num-Lock), Power button LED (without Fingerprint reader), and
Diagnostic LED indicates failure to provide input during LCD panel test on Dell SupportAssist Pre-boot System Performance
Check diagnostics.
Blinking pattern
White
1
2
5
6
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
Problem description
TPM detection failure
Unrecoverable SPI Flash Failure
EC unable to program i-Fuse
Generic catch-all for ungraceful EC code
flow errors
CPU failure
System board failure (included BIOS
corruption or ROM error)
No memory or RAM detected
Memory or RAM failure
Invalid memory installed
System board or Chipset Error
LCD failure (SBIOS message)
LCD failure (EC detection of power rail
failure)
CMOS battery failure
PCI or Video card or chip failure
BIOS Recovery image not found
BIOS Recovery image found but invalid
Power rail failure
Flash corruption is detected by SBIOS.
Timeout waiting on ME to reply to HECI
message.
Troubleshooting
157
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