Dell C734G - Page 84

Table 4. LED codes (continued)
Diagnostic light codes Problem description Recommended solutions
1,2 Unrecoverable SPI Flash failure Replace the system board.
1,3 Short in hinge cable tripped OCP1 Check if the display cable (EDP) is seated
properly or pinched at the hinges. If problem
persists, replace either display cable (EDP) or
display assembly (LCD).
1,4 Short in hinge cable tripped OCP2 Check if the display cable (EDP) is seated
properly or pinched at the hinges. If problem
persists, replace either display cable (EDP) or
display assembly (LCD).
1,5 EC unable to program i-Fuse Replace the system board.
1,6 Generic catch-all for ungraceful EC code flow
errors
Disconnect all power source (AC, battery,
coin cell) and drain flea power by pressing &
holding down power button.
2,1 Processor failure Run the Intel CPU diagnostics tools. If
problem persists, replace the system board.
2,2 System board: BIOS or ROM (Read-Only
Memory) failure
Flash latest BIOS version. If problem persists,
replace the system board.
2,3 No memory or RAM (Random-Access Memory)
detected
Confirm that the memory module is installed
properly. If problem persists, replace the
memory module.
2,4 Memory or RAM (Random-Access Memory)
failure
Reset and swap memory modules amongst
the slots. If problem persists, replace the
memory module.
2,5 Invalid memory installed Reset and swap memory modules among the
slots. If problem persists, replace the memory
module.
2,6 System-board or chipset error Flash latest BIOS version. If problem persists,
replace the system board.
2,7 LCD failure - SBIOS message Replace display vable (EDP) if possible,
otherwise replace the display assembly
(LCD).
2,8 LCD failure - EC detection of power rail failure Replace the system board.
3,1 Coin-cell battery failure Reset the CMOS battery connection. If
problem persists, replace the RTC battery.
3,2 PCI, video card/chip failure Replace the system board.
3,3 Recovery image not found Flash latest BIOS version. If problem persists,
replace the system board.
3,4 Recovery image found but invalid Flash latest BIOS version. If problem persists,
replace the system board.
3,5 Power-rail failure EC ran into power sequencing failure. If
problem persists, replace the system board.
3,6 System BIOS Flash incomplete Flash corruption detected by SBIOS. If
problem persists, replace the system board.
3,7 Management Engine (ME) error Timeout waiting on ME to reply to HECI
message. If problem persists, replace the
system board.
Camera status light: Indicates whether the camera is in use.
● Solid white—Camera is in use.
● Off—Camera is not in use.
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Troubleshooting