Lenovo System x3550 M4 Installation And Service Manual page 142

Table 14. Light path diagnostics panel LEDs (continued)
• Follow the suggested actions in the order in which they are listed in the Action column until the problem is
solved.
• If an action step is preceded by "(trained technician only)," that step must be performed only by a trained
technician.
Description
LED
MEM + CONFIG When both the
MEM and CONFIG LEDs are lit,
the memory configuration is
invalid.
TEMP The system or the system
component temperature has
exceeded a threshold level. A
failing fan can cause the TEMP
LED to be lit.
FAN A fan has failed, is operating too
slowly, or has been removed. The
TEMP LED might also be lit.
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Lenovo System x3550 M4 Installation and Service Guide
Action
If the MEM LED and the CONFIG LED are lit, check the system-
event log in the Setup utility or IMM2 error messages. Follow
steps indicated in Appendix B "UEFI/POST diagnostic codes"
on page 715 and Appendix A "Integrated management module
II (IMM2) error messages" on page 305.
1. Make sure that the heat sink is seated correctly.
2. Determine whether a fan has failed. If it has, replace it.
3. Make sure that the room temperature is not too high. See
"Server features and specifications" on page 5 for the
server temperature information.
4. Make sure that the air vents are not blocked.
5. Make sure that the heat sink or the fan on the adapter, or
the optional network adapter is seated correctly. If the fan
has failed, replace it.
6. For more information, go to
entry/portal/docdisplay? lndocid=SERV-CALL
1. Check if your server installed with any of the adapters
mentioned in Table 25 "Adapter configurations" on page
229 and Table 27 "Supported dual-port network adapters
on the network connector" on page 240. If yes, make sure
your server compile with the configuration with six fans
installed.
2. Reseat the failing fan, which is indicated by a lit LED near
the fan connector on the system board.
3. Replace the failing fan (see "Removing a hot-swap fan" on
page 243 and "Replacing a hot-swap fan" on page 244).
http://www.ibm.com/support/
.