Intel D2550DC2 Technical product specification - Page 69

Board Status and Error Messages, 4.1 BIOS Beep Codes

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4 Board Status and Error Messages 4.1 BIOS Beep Codes The BIOS uses audible beep codes to signal status messages and error messages indicating recoverable errors that occur during the POST. The beep codes are listed in Table 32. These beep codes can be heard through a speaker attached to the board's line out audio jack (see Figure 5, B on page 26). Table 32. BIOS Beep Codes Type Pattern BIOS update in progress Video error (Note) None On-off (1.0 second each) two times, then 2.5-second pause (off), entire pattern repeats (beeps and pause) once and the BIOS will continue to boot. Memory error On-off (1.0 second each) three times, then 2.5-second pause (off), entire pattern repeats (beeps and pause) until the system is powered off. Thermal trip warning Alternate high and low beeps (1.0 second each) for eight beeps, followed by system shut down. Note: Disabled per default BIOS setup option. Frequency 932 Hz When no VGA option ROM is found. 932 Hz High beep 2000 Hz Low beep 1500 Hz 69

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4
Board Status and Error Messages
4.1
BIOS Beep Codes
The BIOS uses audible beep codes to signal status messages and error messages
indicating recoverable errors that occur during the POST.
The beep codes are listed in
Table 32.
These beep codes can be heard through a speaker attached to the board’s
line out audio jack (see Figure 5, B on page 26).
Table 32.
BIOS Beep Codes
Type
Pattern
Frequency
BIOS update in progress None
Video error
(Note)
On-off (1.0 second each) two times, then
2.5-second pause (off), entire pattern repeats
(beeps and pause) once and the BIOS will
continue to boot.
932 Hz
When no VGA option ROM is
found.
Memory error
On-off (1.0 second each) three times, then
2.5-second pause (off), entire pattern repeats
(beeps and pause) until the system is powered
off.
932 Hz
Thermal trip warning
Alternate high and low beeps (1.0 second each)
for eight beeps, followed by system shut down.
High beep 2000 Hz
Low beep 1500 Hz
Note: Disabled per default BIOS setup option.