HP rp8440 User Service Guide, Sixth Edition - HP Integrity rx8640, HP 9000 rp8 - Page 6

System and I/O Fan LEDs...132 OL* LEDs...133 PCI OL* Card Divider LEDs...134 Core I/O LEDs...135 Core I/O Buttons...137 Disk Drive LEDs...138 Interlock Switches...139 Server Management Subsystem Hardware Overview 139 Server Management Overview...140 Server Management Behavior...140 Thermal Monitoring...140 Fan Control...141 Power Control...142 Firmware Updating...142 Instructions...142 Possible Error Messages...143 Firmware Update Tool for IPF...143 Installing and Uninstalling on HP_UX 144 Install...144 Uninstall...144 Installing on Linux...145 Installing on Windows...145 PDC Code CRU Reporting...147 6 Removing and Replacing Components 151 Customer Replaceable Units (CRUs 151 Hot-Plug CRUs...151 Hot-Swap CRUs...151 Other CRUs...151 Safety and Environmental Considerations 152 Communications Interference ...152 Electrostatic Discharge ...152 Powering Off Hardware Components and Powering On the Server 153 Powering Off Hardware Components 153 Powering On the System...153 Removing and Replacing Covers...154 Removing the Top Cover...154 Replacing the Top Cover...155 Removing the Side Cover...155 Replacing the Side Cover...156 Removing and Replacing the Front Bezel 156 Replacing the Front Bezel...157 Removing and Replacing the Front Panel Board 158 Removing the Front Panel Board 158 Replacing the Front Panel Board 160 Removing and Replacing the Front Smart Fan Assembly 161 Removing the Front Smart Fan Assembly 162 Replacing the Front Smart Fan Assembly 163 Removing and Replacing the Rear Smart Fan Assembly 163 Removing the Rear Smart Fan Assembly 164 Replacing the Rear Smart Fan Assembly 165 Removing and Replacing a Disk Drive 165 Removing the Disk Drive...165 Replacing the Disk Drive...166 6 Table of Contents