Dell Precision 5480 Service Manual page 78

Table 22. System-diagnostic lights (continued)
Blinking pattern
Amber
1
2
2
2
2
2
2
2
2
3
3
3
3
3
3
78 Troubleshooting
White Problem description
6
ungraceful EC code flow
1
2 System board failure (included
BIOS corruption or ROM
3 No memory/RAM detected
4 Memory/RAM failure
5 Invalid memory installed
6 System board/Chipset Error
7 LCD failure (SBIOS message)
8 LCD failure (EC detection of
1 CMOS battery failure
2 PCI or Video card/chip failure
3 BIOS Recovery image not
4 BIOS Recovery image found
5
6 Flash corruption detected by
Generic catch-all for
errors
CPU failure
error)
power rail failure)
found
but invalid
Power rail failure
SBIOS.
Suggested resolution
Disconnect all power source
(AC, battery, coin cell) and
drain flea power by pressing
and holding down power
button for 3~5 seconds.
● Run the Dell Support
Assist/Dell Diagnostics
tool.
● If problem persists,
replace the system board.
● Flash latest BIOS version
● If problem persists,
replace the system board.
● Confirm that the memory
module is installed
properly.
● If problem persists,
replace the memory
module.
● Reset and swap memory
modules among the slots.
● If problem persists,
replace the memory
module.
● Reset and swap memory
modules among the slots.
● If problem persists,
replace the memory
module.
Replace the system board.
Replace the LCD module.
Replace the system board.
● Reset the main battery
connection.
● If problem persists,
replace the main battery.
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.
●
Press power button for
over 25 seconds to do