Field-Replaceable Units In An Ex4600 Switch - Juniper EX4600 Hardware Manual

Field-Replaceable Units in an EX4600 Switch

Field-replaceable units (FRUs) are components that you can replace at your site. The EX4600 switch
FRUs are hot-insertable and hot-removable: you can remove and replace one of them without powering
off the switch or disrupting the switching function. FRU types are:
• Power supplies
• Fan modules
• Optical transceivers
• Expansion modules
CAUTION: Replace a failed power supply with a blank panel or a new power supply
within one minute of removal to prevent chassis overheating. The switch continues to
operate with only one power supply running. Replace a failed fan module with a new
fan module within one minute of removal to prevent chassis overheating. Do not
operate the switch for more than one minute after a fan module or power supply fails.
Table 3 on page 8 lists the FRUs for the EX4600 switch and actions to take before removing them.
Table 3: FRUs in a EX4600 Switch
FRU
Power supplies
Fan modules
Optical transceivers
Expansion modules
Required Action
None, if two power supplies are installed as recommended. If only one
power is installed, you must power down the switch. See
Power Supply from an EX4600 Switch" on page
None. See "Removing a Fan Module from an EX4600 Switch" on page
95 for details.
None. We recommend that you disable the interface using the set
interface-name disable command before you remove the
interfaces
transceiver. See Disconnect a Fiber-Optic Cable
None. See "Removing an Expansion Module from an EX4600 Switch"
on page 102.
"Removing a
98.
.
8