Attention: The left and right power supply and fan units are seated in the DS4700 Express chassis in opposite orientations. If you cannot fully insert the power supply and fan unit into the power supply and fan unit bay, flip it 180° and reinsert it. Make sure that the levers lock into place in the storage subsystem chassis. Do not force fit. The power supply and fan unit is designed to prevent it from being inserted into the chassis incorrectly.
13.Plug in the power cord and turn on the power.
14.Check the Power and Fault LEDs on the new unit.
Lever
Figure 114. Replacing a power supply and fan unit
15.Based on the status of the Power and Fault LEDs, choose one of the following steps:
v Fault LED is on and ac and dc power LED are off - The new unit might be installed incorrectly. The power supply and fan unit switch may not be turned on. The power cord plug may not be fully inserted into the power outlet or the power supply and fan unit ac socket. There is not any power to the outlet that the power
vFault and ac power LED are on but the dc power LED is off - The power supply and fan unit is faulty. Turn the power supply and fan unit power switch to off and contact IBM Customer and Technical Support for another power supply and fan unit.
vAC and dc Power LED is on and Fault LED is off - Go to step 17.
16.Perform the following task or task(s) to resolve the problem:
vEnsure that the power switch is turned to the on position.
vEnsure that there is power at the ac outlet and no circuit breaker has tripped.
vEnsure that the power cord is working and fully seated into the electrical outlet and the power supply and fan unit ac socket.
vReinstall the power supply and fan unit.
If the above tasks do not resolve the problem, contact IBM Customer and Technical Support
17.Complete any remaining Recovery Guru procedures, if needed.
18.Check the status of each component in the storage subsystem.
19.Do any components have a Needs Attention LED?
168IBM System Storage DS4700 Express Storage Subsystem: Installation, User’s and Maintenance Guide
