Table 4. System board LEDs definition (continued)
LED name Description
IMM 2 heartbeat LED Indicates the status of the boot process of
the IMM2.
When the server is connected to power this
LED flashes quickly to indicate that the
IMM2 code is loading. When the loading is
complete, the LED stops flashing briefly and
then flashes slowly to indicate that the
IMM2 if fully operational and you can press
the power-control button to start the server.
Standby power LED When this LED is flashing, it indicates that
the server is connected to an ac power
source.
When this LED is lit, it indicates that the
server is dc power on.
System board error LED System-board has failed.
Microprocessor mismatch LED When this LED is lit, it indicates that
microprocessor 1 is not installed, or the
microprocessors do not have the same cache
size and type, and clock speed.
DIMM error LEDs A memory DIMM has failed or is incorrectly
installed.
Microprocessor error LED Microprocessor has failed, is missing, or has
been incorrectly installed.
Light path LED Indicates whether or not the lightpath
button is functional. If the light path LED is
lit after pressing the lightpath button, it
indicates that the lightpath button is
functioning properly. By contrast, if the
lightpath LED is not lit when pressing the
light path button, it means the lightpath
button is not functioning properly.
PCI riser-card adapter expansion slot connectors
The following illustration shows the respective expansion slot connectors on the
three different types of PCI riser card assemblies that the server is capable of
supporting.
Note: The specifications of the following slot labeling is defined in the following
format.
PCIe3 x aa (b, c, d, e)
where:
v aa = Physical connector link width
v b, c, d, e = Negotiable link width
PCI riser-card assembly 1
v Type 1
30 System x3650 M4 BD Type 5466: Installation and Service Guide
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