IBM Flex System x440 Compute Node Installation And Service Manual page 71

Storage
backplane 1
error
Storage
backplane 2
error
Light path diagnostics LEDs
Use this information to diagnose possible errors that are indicated by the light path
diagnostics LEDs.
The following table describes the LEDs on the light path diagnostics panel and the
light path diagnostics LEDs on the system board. LEDs on the light path card are
visible from the top of the compute node. See "Viewing the light path diagnostics
LEDs" on page 57 for information about lighting the LEDs.
Lit light path diagnostics LED
Light path diagnostics
Memory
Mismatch
NMI
Spare
System board
Temperature
Microprocessor 3
error
31
DIMM
error
42
Battery
error
Microprocessor 4
error
Description
This LED lights when the light path LED card is installed
The IMM2 lights this LED, the corresponding DIMM error LEDs on the system
board and the fault LED when a memory fault has occurred.
The IMM2 lights this LED and the fault LED when a mismatch has occurred
between the processors, DIMMs, or hard disk drives within the configuration as
reported by POST.
The IMM2 lights this LED and the fault LED when an nonmaskable interrupt
(NMI) occurs.
Reserved for future use
The IMM2 lights this LED and the fault LED when a system board error has
been detected.
The IMM lights this LED and the fault LED when an over-temperature condition
has occurred that was critical enough to shut down the compute node.
25 1
DIMM
DIMM
Microprocessor 1
error error
30
6
19
43
DIMM DIMM
error error
24
48
error
Microprocessor 2
error
Chapter 6. Troubleshooting
7
DIMM
error
18
59