Light Path Diagnostics - Lenovo Flex System x240 Instruction Manual

Light path diagnostics

For quick problem determination when located physically at the server, the x240 offers a three-step
guided path:
1.
The Fault LED on the front panel
2.
The light path diagnostics panel, shown in the following figure.
3.
LEDs next to key components on the system board
The x240 light path diagnostics panel is visible when you remove the server from the chassis. The panel
is located on the top right-hand side of the compute node, as shown in the following figure.
Figure 11. Location of x240 light path diagnostics panel
To illuminate the light path diagnostics LEDs, power off the compute node, slide it out of the chassis, and
press the power button. The power button doubles as the light path diagnostics remind button when the
server is removed from the chassis.
The meanings of the LEDs in the light path diagnostics panel are listed in the following table.
Table 23. Light path diagnostic panel LEDs
LED Meaning
LP The light path diagnostics panel is operational.
S BRD A system board error is detected.
MIS A mismatch has occurred between the processors, DIMMs, or HDDs within the configuration as
reported by POST.
NMI A non maskable interrupt (NMI) has occurred.
TEMP An over-temperature condition occurs that was critical enough to shut down the server.
MEM A memory fault has occurred. The corresponding DIMM error LEDs on the system board are also lit.
ADJ A fault is detected in the adjacent expansion unit (if installed).
Flex System x240 Compute Node (E5-2600 v2) 35