Lenovo ThinkServer TS430 0387, User Manual

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2 TMM status LED (also known as BMC status LED)
This LED indicates the status of the onboard ThinkServer Management Module (TMM, also known as BMC).
TMM status LED
Color
Description
On Green The TMM is not ready.
Off None The TMM has no power or has failed.
Blinking Green The TMM is working.
3 - 10 POST code diagnostic LEDs
During the system boot process, the BIOS executes several platform configuration processes, each of
which is assigned a specific hex POST code number. When each configuration routine is started, the BIOS
displays the POST code number through the POST code diagnostic LEDs on the system board. To assist in
troubleshooting a system hang during the POST process, the diagnostic LEDs can be used to identify the
last POST process executed.
The POST code diagnostic LED #0 (callout
4
) is the LSB and the POST code diagnostic LED #7 (callout
9
)
is the MSB. If a POST code diagnostic LED is lit, it indicates 1 in the binary numeral system; otherwise, it
indicates 0. For example, if POST code diagnostic LEDs
5
,
6
,
9
, and
10
are lit, you can read the number
as the following:
POST code diagnostic LED
9 7 5 3 10 8 6 4
Binary symbol 1 0 1 0 1 0 1 0
The “10101010” indicates a corresponding POST code. For detailed information about the POST code, refer
to the
Hardware Maintenance Manual . See “Server documentation” on page 2 for information about the
Hardware Maintenance Manual .
Note: The POST code diagnostic LEDs and POST error code information are intended for trained service
personnel of Lenovo.
Chapter 3
.
Product overview
53