Chapter 3: System Interface Chapter 3 System Interface 3-1 Overview There are several LEDs on the control panel as well as others on the power supply units, the SCSI drive carriers and the motherboard to keep you con- stantly informed of the overall status of the system as well as the activity and health of specific components. There are also three switches that allow you to take action based on the information provided by these LEDs. This chapter explains the meanings of all LED indicators and audible alarms and the appropriate response you may need to take. 3-2 Control Panel Switches There are three push-button switches located on the front of the chassis.
These are (in order from left to right) a power on/off switch, an alarm disable switch and a reset switch. POWER: This is the main power switch, which is used to apply or turn off the power supplied to the power supply units on the 6040. ALARM Depressing the alarm switch will disable the audible alarm, which is generated to notify you of chassis overheating or a fan/power supply failure. The LED indicating the cause of the alarm will remain illumi- RESET RESET: The reset switch reboots the system. 3-1 ssing t o notify D indic alarm