Owners Manual
SC180 Expansion Enclosure PSU Features and Indicators
SC180 Expansion Enclosures include two power supply units (PSUs) in two interface slots.
Figure 5. SC180 Expansion Enclosure PSU Features and Indicators
Item Control/Feature Icon Description
1 Release latch — Press the release latch to remove the PSU.
2 PSU fault
• Amber (steady) — PSU fault, PSU not supplying
power
• Amber (flashing) — PSU firmware is downloading
3 AC fault
• Amber (steady) — AC power is not detected
• Amber (flashing) — PSU firmware is downloading
4 Power OK
• Green (steady) — This PSU is providing power
• Green (flashing) — AC power is present, but this
PSU is in standby mode (the other PSU is providing
power)
5 Power outlet — Power outlet for the expansion enclosure
6 Power switch — Controls power for the expansion enclosure
Separate and unique conditions are indicated if all three LEDs are in the same state:
• If all three LEDs are off, then neither PSU has AC power.
• If all three LEDs are on, then the General Enclosure Management (GEM) software has lost
communication with the PSU.
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About the SC180 Expansion Enclosure