Compaq 850 manual System Status, System Boot/ROM Flash Status LED Indications

Technical Reference Guide

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 4-12.

NOTE: The LED indications listed in Table 4-12 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 4-12.System Boot/ROM Flash Status LED Indications

Table 4-12.

System Boot/ROM Flash Status LED Indications

	NUM Lock	CAPs Lock	Scroll Lock
Event	LED	LED	LED
System memory failure [1]	Blinking	Off	Off
Graphics controller failure [2]	Off	Blinking	Off
System failure prior to graphics cntlr. initialization [3]	Off	Off	Blinking
ROMPAQ diskette not present, faulty, or drive prob.	On	Off	Off
Password prompt	Off	On	Off
Invalid ROM detected - flash failed	Blinking [4]	Blinking [4]	Blinking [4]
Keyboard locked in network mode	Blinking [5]	Blinking [5]	Blinking [5]
Successful boot block ROM flash	On [6]	On [6]	On [6]
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.

Table 4-13 lists the operation status codes provided by the power LED on the front of the chassis. Note that error or problem conditions are reported only by the power LED on the minitower.

Table 4-13.System Operational Status LED Indications

Table 4-13.

System Operational Status LED Indications

	Desktop	Minitower
System Status	Power LED	Power LED
S0: System on (normal operation)	Steady green	Steady green
S1: Suspend	Blinks green @ 1 Hz	Blinks green @ 1 Hz
S3: Suspend to RAM	Blinks green @ 1 Hz	Blinks green @ 1 Hz
S4: Suspend to disk	Blinks green @ 0.5 Hz	Blinks green @ 0.5 Hz
S5: Soft off	Off - clear	Off - clear
Processor not seated	Off - clear	Steady red
CPU thermal shutdown	Off - clear	Blinks red @ 4 Hz
ROM error	Off - clear	Blinks red @ 1 Hz
Power supply crowbar activated	Off - clear	Blinks red @ .5 Hz
System off	Off - clear	Off

Compaq Deskpro EXS and Workstation 300 Personal Computers 4-33

Featuring the Intel Pentium 4 Processor

First Edition - December 2000