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Chapter 11
Maintaining Hardware Components
This chapter describes how to maintain hardware components installed in the router.
Some components, such as the craft interface, require no maintenance.
For information about returning a part to Juniper Networks for repair or replacement,
see “Contacting Customer Support and Returning Hardware” on page 197.
■ Tools and Parts Required on page 67
■ Routine Maintenance Procedures on page 67
■ Maintaining Cooling System Components on page 68
■ Maintaining the Host Subsystem on page 70
■ Maintaining Packet Forwarding Engine Components on page 72
■ Maintaining the Power Supplies on page 78
Tools and Parts Required
To maintain hardware components, you need the following tools and parts:
■ ESD grounding wrist strap
■ Flat-blade (–) screwdriver
■ Phillips (+) screwdriver, number 1
■ Phillips (+) screwdriver, number 2
Routine Maintenance Procedures
For optimum router performance, perform the following preventive maintenance
procedures regularly:
■ Inspect the installation site for moisture, loose wires or cables, and excessive
dust. Make sure that airflow is unobstructed around the router and into the air
intake vents.
■ Check the status-reporting devices on the craft interface—System alarms and
LEDs.
■ Inspect the air filter at the left rear of the router, replacing it every 6 months for
optimum cooling system performance. Do not run the router for more than a
Tools and Parts Required ■ 67