3Com 4007 Getting Started Manual

Also see for 3CGBIC97 - Switch 4007 70km Gigabit Enet Gbic: Installation guide Installation guide

Contents

56 CHAPTER 6: MAINTAINING THE SWITCH 4007Figure 25 Installing a 930-watt Power Supply Using theHandleYou feel a slight resistance as the connectors engage.CAUTION: If the resistance is too great, the powersupply connectors and the backplane connectors maynot be aligned properly. Do not force the powersupply into the slot or you can damage theconnectors. If necessary, remove and reinsert thepower supply, ensuring that the connectors arealigned.4 To secure the power supply to the chassis, tighten thefour spring-loaded screws to a Torque Specification offrom 5 to 7 in/lb (inch-pounds).5 Before you plug in the power cord, verify that thepower supply’s Standby/On switch is in the Standbyposition (Figure 24).6 Plug one end of the power cord into the socket onthe power supply and then plug the other end intothe electrical outlet.7 Set the power supply’s Standby/On switch to theOn position (Figure 22).Removing and Replacing a Fan TrayThis section describes how to remove and thenreplace a fan tray for the Switch 4007 chassis:CAUTION: The Switch 4007 sends a fan faultmessage when one fan fails in the fan tray. However,the switch can continue to run if one fan fails in thefan tray. If a second or third fan fails, in that fan tray,no trap message is generated. Replace the fan traywithin 48 hours of receiving the trap message orcontact your service representative. Run the switchwith all four fans operating in the fan tray.You can remove the fan trays and then install themwithout powering off the Switch. This is called hotswapping.There are no user-serviceable parts on either theload-sharing power supplies or on the fan trays. Ifthese components fail, remove them as describedhere and return the components to your supplier.Keep replacement power supply units and fan trays atyour site so that they are available if needed.Powersupplyslot 2Powersupply(in slot 1)