System-Diagnostic Lights - Dell Inspiron 15 3520 Service Manual

System-diagnostic lights

This section lists the system-diagnostic lights of your Inspiron 15 3520.
Table 10. System-diagnostic lights
Blinking pattern
Amber
2
2
2
2
2
2
2
2
3
3
3
3
3
3
White Problem description
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
CPU failure
error)
power rail failure)
found
but invalid
Power rail failure
SBIOS.
Suggested resolution
● 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
RTC reset. If problem
Troubleshooting 107