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System Management
4.11 Diagnostics and Beep Code Generation
The BMC can generate beep codes upon detection of failure conditions. Beep codes are
sounded each time the problem is discovered, such as on each power-up attempt, but are not
sounded continuously. Codes that are common across all platforms that use one of the Intel
5000 Series Chipsets are listed in the following table. Each digit in the code is represented by a
sequence of beeps whose count is equal to the digit.
Code
1-5-2-1
CPU: Empty slot / population error – Processor
slot 1 is not populated.
1-5-2-2
CPU: No processors (terminators only)
1-5-2-3
CPU: Configuration error, such as VID
mismatch
1-5-2-4
CPU: Configuration error, such as BSEL
mismatch
1-5-4-2
Power fault: DC power unexpectedly lost (power
good dropout)
1-5-4-3
Chipset control failure
1-5-4-4
Power control fault
4.12 NMI
On IA-32 platforms, the BMC has specific monitoring and signal generation functionality in
regards to the NMI signal. When a diagnostic interrupt is generated by the BMC, the NMI signal
is pulsed. A front panel diagnostic interrupt sensor is used to log SEL events for assertion of the
diagnostic interrupt.
Note: A diagnostic interrupt is also referred to as front panel diagnostic interrupt or NMI /
diagnostic interrupt.
112
Intel® 5000 Series Chipsets Server Board Family Datasheet
Table 39. BMC Beep Codes
Reason for Beep
Intel order number D38960-004
Associated Sensors
CPU population error
N/A
N/A
N/A
Power unit – power unit
failure offset
N/A
Power unit – soft power
control failure offset
®
Supported?
Yes
No
No
No
Yes
No
Yes
Revision 1.1
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