Dell Precision 7865 Tower Service Manual page 116

Table 22. System-diagnostic lights (continued)
Blinking pattern
Amber
2
2
2
2
2
3
3
3
3
3
3
3
116 Troubleshooting
White Problem description
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
7 Timeout waiting on ME to
reply to HECI message.
power rail failure)
found
but invalid
Power rail failure
SBIOS.
Suggested resolution
●
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
persists, replace the
system board.
● Disconnect all power
source (AC, battery, coin
cell) and drain flea power
by pressing and holding
down power button 3~5
seconds to ensure all
power are drained.
● Run "BIOS recovery from
USB", and the instructions
are in the website Dell
support.
● If problem persists,
replace the system board.
Replace the system board.