3Com 7754 Installation Manual

Also see for Switch 7754: Product guide Datasheet Datasheet Product guide Configuration guide

Replacing I/O Modules 71Replacing I/O Modules To replace an I/O module, you need:■ An antistatic wrist strap■ A ScrewdriverTo remove a module:1 Remove all the cables from the module to be removed.2 Loosen the captive screws.3 Hold the ejector levers on the module with both hands, and press them towardboth sides to separate the connectors of the module from the motherboard.4 Gently slide the module along the guides and out of the slot.5 Put the removed module into the package that contained the replacementmodule.Replace the blanking plate on the chassis if you do not install a new module in theplace where the old one was removed.To install a replacement module:1 With both hands, hold the ejector levers on the module that will be installed.2 Align the module with the guides in the chassis and slide it into the slot gentlyuntil you feel the positioning pin on the handle bar touch the hole in the chassis.3 Press the ejector levers inward and seat the pin on the handle bar into thepositioning hole in the chassis.4 Fasten the captive screws to fix the module.Replacing the FanAssemblyYou can hot-swap fan assemblies in the Switch 7750.To replace a fan assembly, you need:■ An antistatic wrist strap■ A ScrewdriverWARNING: To avoid injury, do not touch any naked wire, terminal, or any part ofthe product labeled Dangerous Voltage. Always wear the antistatic wrist strapwhen replacing the fan module.To replace a fan assembly:1 Put on the antistatic wrist strap.2 With both hands, pull out the ejector levers on the fan assembly to separate thefan assembly connector from the backplane.3 Pull the fan gently along the guides of the slot to remove it.4 With both hands, pull out the ejector levers of the fan that will be installed. Alignit with the guides in the chassis and slide it gently into the slot until you feel thepositioning pin on the handle bar touch the hole in the chassis.5 Press the ejector levers inward and seat the pin on the handle bar into thepositioning hole in the chassis.