66Replacement proceduresThe H3C SR6604 and SR6608 routers use a modular, all-pluggable design, and support replacing hotswappable modules without interrupting the router operation.This chapter includes these sections:• Safety recommendations• Replacing a power supply• Replacing an RPE-X1 MPU• Replacing an RSE-X1 MPU• Replacing a FIP module• Replacing a SAP/OAP module• Replacing a HIM• Replacing a MIM• Replacing a CF card• Replacing a transceiver module• Replacing a fan tray• Replacing an air filter• Replacing a memory moduleSafety 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, RPE-X1 carrier (used when you use anRPE-X1 MPU), FIP module, SAP module, memory module, CF card, or HIM/MIM, 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. Otherwise,the panel of the module may be deformed.• 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:Step1 Use a Philips screwdriver to loosen the captive screws of the power supply to be removed until all springpressure is released.Step2 Gently pull the power supply out of the slot along the slide rails.
