IBM EXP15 Hardware Maintenance Manual

Also see for EXP15: Installation and User Handbook

Additional Service Information“Performing a Shutdown”“Turning the Power On”Performing a ShutdownNoteIf the Expansion Unit loses power unexpectedly, itmight be due to a hardware failure in the powersystem or mid-plane (see “Symptom-to-FRU Index” onpage 31).To perform a shutdown:1. Make sure that all I/O activity has stopped. Ifapplicable, logically disconnect from the hostcontroller.2. Make sure that all amber Fault LEDs are off. If anyFault LEDs are lit (drives, power supplies, or fans),correct the problem before you turn off the power.3. Turn off both power supply switches on the back ofthe expansion unit.Turning the Power OnUse this procedure to power-on the Netfinity EXP200Storage Expansion unit.Initial start-up:1. Verify that all communication and power cablesare plugged into the back of the expansion unit.a. All hard disk drives are locked securely inplace.b. Option switchs 1 through 5 and the traynumber switch on the expansion unit areset correctly.c. The host controller and other SCSI busdevices are ready for the initial power-up.d. Power-on the expansion unit beforepowering on the server.2. Turn on the power to each device, based on thispower-up sequence.3. Turn on both power supply switches on the backof the expansion unit.4. Only the green LEDs on the front and backshould be on. If one or more of the amber FaultLEDs are on, refer to “Symptom-to-FRU Index”on page 31.Re-starting:If you are re-starting after a normal shutdown, wait atleast ten seconds before you attempt to turn on eitherpower supply switch.28 IBM Netfinity EXP15, EXP200, EXP500 HMM