Juniper BT8A78CH1, Hardware Overview And Installation Manual

Page: 193 / 228

BTI7802 Field-Replaceable Units (FRUs)
Field-replaceable units are pre-installed when the BTI7802 is delivered. This section
describes how to remove and replace the FRUs on the BTI7802.
WARNING: Use proper caution when working with the equipment. This chapter
might not cover every possible hazardous condition.
Safety Warnings
•
This equipment is intended to be installed and serviced by qualified personnel.
• Be familiar with the safety guidelines described in the BTI7800 Series Hardware Overview
and Installation Guide .
•
Ensure the chassis is installed properly and secured onto the rack.
•
Ensure you have an unobstructed path to the chassis.
• Avoid contact with rotating fan blades.
Electrical Warnings
CAUTION: Electrostatic Discharge (ESD) can damage module components,
causing complete or intermittent failures. ESD can occur when a module is
improperly handled.
To prevent ESD damage to a module, follow these guidelines:
•
Always wear an ESD grounding device, such as an ESD wrist strap, when handling a
module.
• Do not remove a module from its antistatic bag until installation. Store removed
modules in antistatic packaging.
•
If you need to set a module down, place it back into its antistatic packaging or on a
properly-grounded antistatic mat.
• Handle the module by its edges and/or its faceplate and avoid touching any pins, leads,
or solder connections on the circuit board.
•
Replacing the BTI7802 PEM on page 193
•
Replacing the BTI7802 CAP on page 195
• Replacing the BTI7802 FAN2 on page 195
• Replacing a BTI7802 Air Filter on page 197
Replacing the BTI7802 PEM
Use this procedure to remove and replace the power entry modules on the BTI7802
chassis. The procedure is the same for replacing the DC PEM and AC PEM.
193 Copyright © 2019, Juniper Networks, Inc.
Chapter 7: BTI7800 Series Field Replaceable Units (FRUs)