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.
AC input Fail Amber
IBM System Storage DCS9550 1S1 Storage Expansion Unit Installation, Service, and User Guide