Lenovo THINKSERVER 392 User Manual
Page 63
2
BMC status LED
This LED indicates the BMC status of your server.
BMC status LED
Color
Description
On
Green
The BMC is not ready.
Off
None
The BMC has no power or fails.
Blinking
Green
The BMC 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.
Note: The POST code diagnostic LEDs and POST error code information are intended for trained service
personnel of Lenovo.
The following table lists information about the POST error codes.
POST code diagnostic LEDs
POST error code
Description
00001110
0x0E
Microcode not found.
00001111
0x0F
Microcode not loaded.
01010000
0x50
Memory initialization error. The
memory type is invalid or the memory
speed is incompatible.
01010001
0x51
Memory initialization error. The Serial
Presence Detect (SPD) data reading
has failed.
01010010
0x52
Memory initialization error. The
memory size is invalid or the memory
modules do not match.
01010011
0x53
Memory initialization error. No usable
memory detected.
01010100
0x54
Unspecified memory initialization
error.
01010101
0x55
Memory not installed.
01010110
0x56
Invalid microprocessor type or speed.
Chapter 3
.
Product overview
51