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Operation
3.1.1
Power Supply/Cooling Module LEDs
The Power Supply/Cooling module incorporates 4 LEDs, located below the On/Off switch and
shown in tablecap.
• Under Normal conditions the LEDs should all be illuminated constant GREEN
• If a problem is detected the color of the relevant LED will change to AMBER.
Table 3–1
PSU Good
AC input Fail Amber
Fan Fault
DC Output
Fail
34
PSU LEDs
AC PSU
Green
Amber
Amber
IBM System Storage DCS9550 1S1 Storage Expansion Unit Installation, Service, and User Guide
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