HP F5000 Installation Manual

50Replacement proceduresThis chapter includes these sections:• Safety recommendations• Replacing a power supply• Replacing an MPU• Replacing an interface module• Replacing a transceiver module• Replacing a CF card• Replacing a fan tray• Replacing an air filterSafety recommendations1. Always wear an ESD-preventive wrist strap or ESD-preventive gloves when replacing the modules.2. When operating a pluggable module, such as a the MPU, interface module, or CF card, note thefollowing guidelines:• Ensure good alignment with the slot to avoid damage to the module during installation or removal.• Before removing a module, make sure that the captive screws are completely loosened.• Avoid touching any components on the PCB during observing or moving the module.• Put the removed module on an antistatic workbench with the PCB side facing upward or place themin antistatic bags.Replacing a power supplyThe replacement procedure of an AC power supply is the same as a DC power supply. This section takesan AC power supply as an example.Follow these steps to replace a power supply:1. Switch off the power supply.2. Turn off the circuit breaker at the power input end.3. Remove the AC power cord.4. Use a Philips screwdriver to loosen the captive screws of the power supply to be removed until allspring pressure is released.5. Gently pull the power supply out of the slot along the slide rails.