Desktop Board Features
29
Status LEDs
The LEDs in Table 5 indicate various board activities and error conditions on the board.
Table 5. Status LEDs
LED
Item/Callout
in Figure 7
LED
Color
Description
HD Activity H Blue This LED blinks to indicate the activity of
SATA drives connected to the board.
CPU Hot I Red The LED indicates an elevated
temperature on the processor that could
affect board performance.
VR Hot J Red This LED indicates an elevated
temperature in the processor voltage
regulator circuit that could affect board
performance.
CPU Error F Red Indicates that the system has experienced
a catastrophic error and cannot continue
to operate.
Power Fault M Red The system power supply is
malfunctioning.
Speaker
A speaker is mounted on the Desktop Board. The speaker provides audible error code
(beep code) information during the Power-On Self-Test (POST). Refer to Appendix A
for a description of the board’s beep codes.
Battery
A battery on the Desktop Board keeps the values in CMOS RAM and the clock current
when the computer is turned off and disconnected from AC power. Go to page 59 for
i
nstructions on how to replace the battery.
Real-Time Clock
The Desktop Board has a time-of-day clock and 100-year calendar. The battery on the
Desktop Board keeps the clock current when the computer is turned off.
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