Specifications

QSSC-S4R Technical Product Specification Processor Presence and Population Check
263
06 1 A0h
Memory Riser
Board E
RW 256
07 1 A2h
Memory Riser
Board F
RW 256
08 1 A4h
Memory Riser
Board G
RW 256
09 1 A6h
Memory Riser
Board H
RW 256
0A 4 AAh
Power
Distribution
Board
RW 256
0B 4 A0h Power Supply 1 RO 256
0C 4 A2h Power Supply 2 RO 256
0D 4 A4h Power Supply 3 RO 256
0E 4 A6h Power Supply 4 RO 256
0F 5 AEh
Front Panel Fan
Board
RW 256
10 5 A8h SAS (Optional) RW 256
24.9 Diagnostics and Beep Code Generation
The BMC may generate beep codes upon detection of failure conditions. Beep codes are sounded each time the
problem is discovered (for example, on each power-up attempt), but are not sounded continuously. Supported codes
are listed in the table below. Each digit in the code is represented by a sequence of beeps whose count is equal to the
digit.
Table 177. BMC Beep Codes
Code Reason for Beep Associated Sensors Supported
1-5-2-1
No CPUs installed or first CPU socket is
empty.
CPU Missing Sensor Yes
1-5-4-2
Power fault: DC power unexpectedly lost
(power good dropout).
Power unit – power unit failure
offset.
Yes
1-5-4-4
Power control fault (power good assertion
timeout).
Power unit – soft power control
failure offset.
Yes
24.9.1 Signal Generation
The BMC generates an NMI pulse under certain conditions. The BMC-generated NMI pulse duration is at least 30 ms.
Once an NMI has been generated by the BMC, the BMC does not generate another until the system has been reset or
powered down.
The following actions will cause the BMC to generate an NMI pulse:
x Receiving a Chassis Control command to pulse the diagnostic interrupt. This command does not cause an event to
be logged in the SEL.
x Detecting that the front panel diagnostic interrupt button has been pressed. See Section 24.2.4.4.
x Watchdog timer pre-timeout expiration with NMI / diagnostic interrupt pre-timeout action enabled.
The following table shows behavior regarding NMI signal generation and event logging by the BMC.