System-diagnostic lights
Table 19. System-diagnostic lights
Blinking pattern
Problem description
Suggested resolution
Amber
White
1
1
TPM detection failure
Replace the system board.
1
2
Unrecoverable SPI Flash
Failure
Replace the system board.
1
3
Short in hinge cable tripped
OCP1
1
4
Short in hinge cable tripped
OCP2
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
and holding down power
button for 3~5 seconds.
2
1
CPU failure
●
Run the Dell Support
Assist/Dell Diagnostics
tool.
●
If problem persists,
replace the system board.
2
2
System board failure (included
BIOS corruption or ROM
error)
●
Flash latest BIOS version
●
If problem persists,
replace the system board.
2
3
No memory/RAM detected
●
Confirm that the memory
module is installed
properly.
●
If problem persists,
replace the memory
module.
2
4
Memory/RAM failure
●
Reset and swap memory
modules among 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/Chipset Error
Replace the system board.
2
7
LCD failure (SBIOS message)
Replace the LCD module.
2
8
LCD failure (EC detection of
power rail failure)
Replace the system board.
3
1
CMOS battery failure
●
Reset the main battery
connection.
Troubleshooting
133
Summary of Contents for OptiPlex 7760
Page 1: ...Precision 7760 Service Manual Regulatory Model P44E Regulatory Type P44E002 July 2021 Rev A01 ...
Page 17: ...For computers without SSD door configuration Removing and installing components 17 ...
Page 25: ...Removing and installing components 25 ...
Page 29: ...Removing and installing components 29 ...
Page 74: ...74 Removing and installing components ...
Page 87: ...Removing and installing components 87 ...
Page 97: ...Removing and installing components 97 ...
Page 98: ...98 Removing and installing components ...