HP 418800-B21 HP StorageWorks 70 Modular Smart Array Enclosure maintenance and - Page 36

Power on/off module Before you begin CAUTION: • Before removing the failed component, make sure that you have the replacement part available. Removing a component impacts the airflow and cooling ability of the device. • Do not remove more than one component or blank from the enclosure at a time. Doing so impacts the airflow and cooling ability of the device. To avoid possible overheating, insert the new or replacement component as quickly as possible. If the internal temperature exceeds acceptable limits, the MSA70 may overheat and automatically shut down or restart. • Parts can be damaged by electrostatic discharge. Use proper anti-static protection. Verifying component failure Use the following methods to verify component failure: • Check the host log for errors. • Check the heartbeat, fault, and power supply status LEDs as identified in the following table: Item Heartbeat LED Fault LED Power supply LED Description Green = System activity Off = No system activity Amber = Fault condition Off = No fault condition Green = Power turned on and power supply functioning properly Amber = Standby (auxiliary power present) Blinking amber = Power to this power supply not present Off = One or more of the following conditions exists: • A/C power unavailable • Power supply failed • Power supply in standby mode • Power supply exceeded current limit Removing the power on/off module 1. Power down the enclosure: e. Power down any attached servers. See the server documentation. f. Press the Power On/Standby button on the enclosure. g. Wait for the system power LED to go from green to amber. h. Disconnect the power cords. 2. Extend or remove the enclosure from the rack in which it may be installed: Removal and replacement procedures 36