Post Error Beep Codes - Kontron CG2300 Installation And Maintenance Manual

Post Code Diagnostic LEDs
During the system boot process, the BIOS executes a number of platform configuration processes, each of which is assigned a
specific hex POST code number. As each configuration routine is started, the BIOS displays the given POST code to the POST
code diagnostic LEDs on the back edge of the server board. To assist in troubleshooting a system failure during the POST process,
use the diagnostic LEDs to identify the last POST process executed.
8.6.4

POST Error Beep Codes

Table 6 lists the POST error beep codes. Prior to system video initialization, the BIOS uses these beep codes to inform users of
error conditions. Please note that not all error conditions are supported by BIOS beep codes.
Beeps Error Message
1 USB device action
1 Intel® TXT security
violation
3 Memory error
The following Beep Codes are sounded during BIOS recovery
2 BIOS Recovery
started
4 BIOS Recovery
failure
The Integrated BMC may 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
Intel server boards and systems that use the same generation chipset 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.
Beep Code Reason for Beep
1-5-2-1 CPU socket population error
1-5-2-4 MSID mismatch
1-5-4-2 Power fault
1-5-4-4 Power control fault
1-5-1-2 VR watchdog timer
1-5-1-4 Power supply status
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Table 6: POST Error Beep Codes
Post Progress Code Description
N/A Short beep sounded whenever a USB device is discovered in POST or
inserted or removed during runtime
0xAE, 0xAF System halted because the Intel® Trusted Execution Technology
detected a potential violation of system security
Multiple System halted because a fatal error related to the memory was detected
N/A Recovery boot has been initiated
N/A BIOS recovery has failed. This typically happens so quickly after recovery
is initiated that it sounds like a 2 – 4 beep code.
Table 7: Integrated BMC Beep Codes
Associated Sensors
CPU1 socket is empty or sockets are populated incorrectly
CPU1 must be populated before CPU2
MSID mismatch occurs if a processor is installed into a system
board that has incompatible power capabilities
DC power unexpectedly lost (power good dropout)
Power unit sensors report power unit failure offset
Power good assertion timeout
Power unit sensors report soft power control failure offset
VR controller DC power on sequence was not completed in time
The system does not power on or unexpectedly powers off and a
Power Supply Unit (PSU) is present that is an incompatible model
with the other PSU in the system.
Installation and Maintenance Guide
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