Dell Precision 7750 Service Manual page 101

Table 6. LED codes
Diagnostic light codes
1,1
1,2
1, 5
1, 6
2,1
2,2
2,3
2,4
2,5
2,6
2,7
2,8
3,1
3,2
3,3
3,4
3,5
3,6
3,7
Camera status indicator: Indicates whether the camera is in use.
• Solid white — Camera is in use.
• Off — Camera is not in use.
Caps Lock status indicator: Indicates whether Caps Lock is enabled or disabled.
• Solid white — Caps Lock enabled.
• Off—Caps Lock disabled.
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
Motherboard covers BIOS corruption or
ROM error
No Memory/RAM detected
Memory/RAM Failure
Invalid memory installed
Motherboard/Chipset Error
LCD failure - SBIOS message
LCD failure - EC detection of power rail
failure
CMOS battery failure
PCI of Video card/chip failure
BIOS Recovery Image not found
Recovery Image found but invalid
EC ran into power sequencing failure
Flash corruption detected by SBIOS
Timeout waiting on ME to reply to HECI
message
Recommended Solution
Replace System Board
Replace System Board
Replace System Board
Disconnect all power source (AC, battery, coin cell) and
drain flea power by pressing & holding down power button
Run the Intel CPU diagnostics tools. 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 the memory module. If problem persists, replace the
memory module
Reset the memory module. If problem persists, replace the
memory module
Flash latest BIOS version. If problem persists, replace the
system board
Flash latest BIOS version. If problem persists, replace the
LCD module
Replace the system board
Reset the CMOS battery connection. If problem persists,
replace the RTC 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
Replace the system board
Replace the system board
Problemen oplossen 101