Juniper EX4400 - Page 213

updateinstallbase/. Failure to do so can result in signicant delays if you need replacement
parts. This note does not apply if you replace exisng components with the same type of
component.
NOTE: You must install both the power supplies and they must be operaonal for opmal
funconing of the switch.
Maintain the EX4400 Extension Modules
IN THIS SECTION
Remove an Extension Module from an EX4400 Switch | 205
Install an Extension Module in an EX4400 Switch | 208
Remove an Extension Module from an EX4400 Switch
Before you remove an extension module from an EX4400 switch:
• Ensure that you have taken the necessary precauons to prevent electrostac discharge (ESD)
damage (see Prevenon of Electrostac Discharge Damage).
• If there are any transceivers installed in the extension module, remove them before you remove the
extension module. For instrucons on removing transceivers, see "Maintain Transceivers" on page
211.
• Ensure that you have the following parts and tools available:
• Number 2 Phillips (+) screwdriver—not provided
• An anstac bag or an anstac mat—not provided
• An ESD grounding strap—not provided
• A replacement extension module or cover for the empty extension module slot
205