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Chapter 4
Troubleshooting
4-5
4.1.4.2
Power and Cooling Unit LEDs
Each power and cooling unit has an AC LED and a power-supply (PS) LED.
lists the possible conditions of these LEDs and describes each state.
FIGURE 4-2
Power and Cooling Unit LEDs
TABLE 4-2
Power and Cooling Unit LED Descriptions
AC LED (green
or amber)
PS LED
(green or amber)
Description
Off
Off
• Power is off
• No AC input
Amber
Off
• Power is off
• Power switch turned off
• AC power is available
Green
Off
Occurs when disk tray is shut down:
• PCU disabled
• AC power is available
Green
Green
Normal operating state:
• PCU receiving AC power
• Power switch is turned on
• AC power is available
Amber
Amber
• Switch is off; disk tray will power off after
PCU is disabled
AC LED
PS LED
Summary of Contents for Sun StorEdge T3
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