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4.7.2 POWER MANAGEMENT
This system provides baseline hardware support of ACPI- and APM-compliant firmware and
software. Key power-consuming components (processor, chipset, I/O controller, and fan) can be
placed into a reduced power mode either automatically or by user control. The system can then be
brought back up ("wake-up") by events defined by the ACPI specification. The ACPI wake-up
events supported by this system are listed as follows:
ACPI Wake-Up Event
Power Button
RTC Alarm
Wake On LAN (w/NIC)
PME
Serial Port Ring
USB
Keyboard
Mouse
4.7.3 SYSTEM STATUS
These systems provide a visual indication of system boot and ROM flash status through the
keyboard LEDs as listed in table 4-15.
NOTE: The LED indications listed in Table 4-15 are valid only for PS/2-type
keyboards. A USB keyboard will not provide LED status for the listed events, although
audible (beep) indications will occur.
Table 4-15. System Boot/ROM Flash Status LED Indications
Event
System memory failure [1]
Graphics controller failure [2]
System failure prior to graphics cntlr. initialization
[3]
ROMPAQ diskette not present, faulty, or drive
prob.
Password prompt
Invalid ROM detected - flash failed
Keyboard locked in network mode
Successful boot block ROM flash
NOTES:
[1] Accompanied by 1 short, 2 long audio beeps
[2] Accompanied by 1 long, 2 short audio beeps
[3] Accompanied by 2 long, 1 short audio beeps
[4] All LEDs will blink in sync twice, accompanied by 1 long and three short audio beeps
[5] LEDs will blink in sequence (NUM Lock, then CAPs Lock, then Scroll Lock)
[6] Accompanied by rising audio tone.
System Wakes From
Suspend or soft-off
Suspend or soft-off
Suspend or soft-off
Suspend or soft-off
Suspend or soft-off
Suspend only
Suspend only
Suspend only
Table 4-15.
System Boot/ROM Flash Status LED Indications
Compaq Deskpro EX Series of Personal Computers
First Edition - August 2000
Technical Reference Guide
NUM Lock
CAPs Lock
LED
LED
Blinking
Off
Off
Blinking
Off
Off
On
Off
Off
On
Blinking [4]
Blinking [4]
Blinking [5]
Blinking [5]
On [6]
On [6]
Scroll Lock
LED
Off
Off
Blinking
Off
Off
Blinking [4]
Blinking [5]
On [6]
4-35
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- Board Layout
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