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IBM System Storage DCS9550 1S1 Storage Expansion Unit Installation, Service, and User Guide
4.3.2
Ops Panel ........................................................................................................................ 39
4.3.3
SCM I/O Module LEDs ..................................................................................................... 41
4.4.1
Audible Alarm Mute .......................................................................................................... 41
4.5.1
System Faults .................................................................................................................. 42
4.5.2
Power Supply/Cooling Faults ........................................................................................... 42
4.5.3
Thermal Control ............................................................................................................... 43
4.5.4
Thermal Alarm ................................................................................................................. 44
4.5.5
Thermal Shutdown ........................................................................................................... 44
4.6.1
Dummy Carrier Modules .................................................................................................. 45
4.9.1
Power Supply/Cooling Modules ....................................................................................... 46
4.9.2
Ops Panel ........................................................................................................................ 48
4.9.3
SCM I/O Module .............................................................................................................. 48
4.9.4
Drive Carrier Module ........................................................................................................ 50