HP ProLiant DL180 Server Software Configuration Guide

Contents 44
If an optional POST code expansion board is installed in the server, during these instances, the server
emits a buzzing sound followed by a series of audible beeps. An external ROM module can also
issue audible errors, usually consisting of one long tone followed by a series of short tones. If you get
a blank screen on boot but hear beeps, count the beeps and refer to Table 18 for their corresponding
meaning. If you miss the beep code:
1. Turn off the server by pressing the power button for five seconds or more.
2. Restart the server by pressing the power button.
3. Listen for the signal again.
The routine derives the beep code from the test point error as follows:
1. The 8-bit error code is broken down to four 2-bit groups (Discard the most significant group if it
is 00).
2. Each group is made one-based (1 through 4) by adding 1.
3. Short beeps are generated for the number in each group.
Example:
Test point 01Ah = 00 01 10 10 = 1-2-3-3 beeps
Table 27 lists the checkpoint codes written at the start of each test and the beep codes issued for
terminal errors.
Table 27
Checkpoint codes
01h Initialize IPMI
02h Verify real mode
03h Disable non-maskable interrupts
04h Get processor type
06h Initialize system hardware
07h Disable shadow and execute code from the ROM
08h Initialize chipset with initial POST values
09h Set IN POST flag
0Ah Initialize processor registers
0Bh Enable processor cache
0Ch Initialize caches to initial POST values
0Eh Initialize I/O component
0Fh Initialize the local bus IDE
10h Initialize power management
11h Load alternate registers with initial POST values
12h Restore processor control word during warm boot
13h Initialize PCI bus mastering devices
14h Initialize keyboard controller