Dell Latitude 9520 2-in-1 Service Manual page 88

Table 21. Disgnostic LED states (continued)
Amber LED state
2
2
2
2
2
2
2
3
3
3
3
3
3
3
88 Troubleshooting
White LED state
2
3
4
5
6
7
8
1
2
3
4
5
6
7
System state
System board failure (included
BIOS corruption or ROM
error)
No memory/ RAM detected
Memory/ RAM failure
Invalid memory installed
System board/ Chipset error
LCD failure
LCD Power rail failure
CMOS battery failure
PCI or Video card/ chip failure Replace the system board
BIOS Recovery Image not
found
BIOS Recovery Image found
but invalid
Power rail failure
SBIOS Flash Corruption
ME error
Notes
Flash latest BIOS version
If problem persists, replace
the system board
Confirm that the memory
module is installed properly
If problem persists, replace
the system board
Reset the memory module
If problem persists, replace
the system board
Reset the memory module
If problem persists, replace
the system board
Flash latest BIOS version
If problem persists, replace
the system board
Flash latest BIOS version
If problem persists, replace
the system board
Replace the system board
Reset the CMOS battery
connection
If problem persists, replace
the system board
Flash latest BIOS version
If problem persists, replace
the system board
Flash latest BIOS version
If problem persists, replace
the system board
EC ran into power sequencing
failure
If problem persists, replace
the system board
Flash corruption detected by
SBIOS
If problem persists, replace
the system board
Timeout waiting on ME to
reply to HECI message