Cisco cBR Manuale utente
Maintaining the Power System in the Cisco cBR
Chassis
•Removing the AC Power Connections from the Cisco cBR Chassis, page 1
•Removing the DC Power Connections from the Cisco cBR Chassis, page 2
•Removing the Power Module from the Cisco cBR Chassis, page 4
•Removing the FPEM from the Cisco cBR Chassis, page 7
•Removing the Power Cassette Module from the Cisco cBR Chassis, page 9
Removing the AC Power Connections from the Cisco cBR
Chassis
The chassis ground connection must always be made first and disconnected last.Warning
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Statement 1030
Warning
Before You Begin
Required Tools and Equipment
Cisco Converged Broadband Routers Hardware Installation Guide
1
•#2 Phillips screwdriver
Step 1 Power down the AC FPEM using the power switch.
Step 2 Power down the AC circuit or power source to which the AC power cord is connected.
Step 3 Loosen the Phillips-head screw on the cable retaining bracket using a #2 Phillips screwdriver.
Step 4 Unplug the AC power cord from the receptacle on the AC FPEM.
Figure 1: Removing AC Power Cord from the AC FPEM
AC power cord2Screw on the cable retaining bracket1
Step 5 Repeat Step 2, on page 2 to Step 4, on page 2 for each AC power connection.
Removing the DC Power Connections from the Cisco cBR
Chassis
The terminal block covers are an integral part of the safety design of the product. Do not operate the unit
without the covers installed. Statement 1077
Warning
When you install the unit, the ground connection must always be made first and disconnected last.
Statement 1046
Warning
Cisco Converged Broadband Routers Hardware Installation Guide
2
Maintaining the Power System in the Cisco cBR Chassis
Removing the DC Power Connections from the Cisco cBR Chassis
Before performing any of the following procedures, ensure that power is removed from the DC circuit.
Statement 1003
Warning
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Statement 1030
Warning
Before You Begin
Required Tools and Equipment
•Torque wrench
•7/16" hex socket
Step 1 Power down the DC FPEM using the power switch.
Step 2 Power down the circuit or power supply to which the positive and negative lead cables are connected.
Step 3 Remove the terminal block cover on the terminal block, from which you need to disconnect power, by pushing down
on the bottom tab then pivoting the bottom out.
Step 4 Loosen the 1/4-20 terminal bolts using a torque wrench and 7/16" hex socket and remove them. Disconnect the positive
lead cable.
Step 5 Loosen the 1/4-20 terminal bolts using a torque wrench and 7/16" hex socket and remove them. Disconnect the negative
lead cable.
Figure 2: Removing the DC Power Connection from the DC FPEM
Step 6 Repeat Step 2, on page 3 and Step 5, on page 3 to disconnect each terminal block connection.
Step 7 Insert the 1/4-20 terminal bolts and secure them using a torque wrench and 7/16" hex socket with a torque of 45-50 in-lb
(5.08-5.65 Nm).
Step 8 Reinstall the terminal block covers by clipping them on the top edge of the terminal block housing and then rotating
them down until they snap into place.
Cisco Converged Broadband Routers Hardware Installation Guide
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Maintaining the Power System in the Cisco cBR Chassis
Removing the DC Power Connections from the Cisco cBR Chassis
Removing the Power Module from the Cisco cBR Chassis
Before You Begin
•Attach an ESD-preventive wrist strap to your wrist and connect the other end to the grounding lug
connected to the chassis.
•Be aware of the weight and size of the equipment. Handle it with care.
Restrictions
•For the DC-powered Cisco cBR with N+1 redundancy, ensure that the chassis has at least five operational
DC Power Modules for the chassis to be functional.
•For the AC-powered Cisco cBR with N+1 redundancy, ensure that the chassis has at least four operational
AC Power Modules for the chassis to be functional.
•For the AC-powered Cisco cBR with 1+1 redundancy, ensure that the chassis has six operational AC
Power Modules for the chassis to be functional.
Required Tools and Equipment
•ESD-preventive wrist strap
•3/16" flat-blade torque screwdriver
Cisco Converged Broadband Routers Hardware Installation Guide
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Maintaining the Power System in the Cisco cBR Chassis
Removing the Power Module from the Cisco cBR Chassis
•Antistatic bag
Step 1 Loosen the two screws on the front power entry bezel using a 3/16" flat-blade torque screwdriver. Remove the front
power entry bezel from the chassis.
Figure 3: Removing the Front Power Entry Bezel from the Chassis
Cisco Converged Broadband Routers Hardware Installation Guide
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Maintaining the Power System in the Cisco cBR Chassis
Removing the Power Module from the Cisco cBR Chassis
Step 2 Loosen the screw on the Power Module using a 3/16" flat-blade torque screwdriver.
Step 3 Pull the handle down to disengage the Power Module from the chassis.
Step 4 Slide the Power Module out of its bay with one hand while supporting the base of the module with your other hand.
Figure 4: Removing the Power Module
Step 5 Place the removed Power Module in an antistatic bag.
What to Do Next
•Replace the Power Module (if required).
Cisco Converged Broadband Routers Hardware Installation Guide
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Maintaining the Power System in the Cisco cBR Chassis
Removing the Power Module from the Cisco cBR Chassis
•Position the front power entry bezel on the chassis. Insert and tighten the two screws using a 3/16"
flat-blade torque screwdriver with a torque of 5-7 in-lb (0.56-0.79 Nm) to secure the bezel.
Removing the FPEM from the Cisco cBR Chassis
Before You Begin
•For an AC-powered Cisco cBR chassis, remove the AC power connections.
For an DC-powered Cisco cBR chassis, remove the DC power connections.
•Attach an ESD-preventive wrist strap to your wrist and connect the other end to the grounding lug
connected to the chassis.
•Remove the Power Modules.
•If you are replacing the entire power system, remove the Power Cassette Module.
•Be aware of the weight and size of the equipment. Handle it with care.
Required Tools and Equipment
•ESD-preventive wrist strap
•T10 Torx screwdriver
Cisco Converged Broadband Routers Hardware Installation Guide
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Maintaining the Power System in the Cisco cBR Chassis
Removing the FPEM from the Cisco cBR Chassis
•Antistatic bag
Step 1 Loosen and remove the four #6-32 Torx-head screws on the mounting flanges of the FPEM using a T10 Torx screwdriver.
Figure 5: Removing the FPEM from the Chassis
Step 2 Slide the FPEM out of the chassis using the handles on either side applying even pressure to both handles.
Step 3 Place the removed FPEM in an antistatic bag.
What to Do Next
Replace the FPEM (if required).
Cisco Converged Broadband Routers Hardware Installation Guide
8
Maintaining the Power System in the Cisco cBR Chassis
Removing the FPEM from the Cisco cBR Chassis
Removing the Power Cassette Module from the Cisco cBR
Chassis
Before You Begin
•Remove the Power Modules.
•Be aware of the weight and size of the equipment. Handle it with care.
Required Tools and Equipment
•3/16" flat-blade torque screwdriver
Cisco Converged Broadband Routers Hardware Installation Guide
9
Maintaining the Power System in the Cisco cBR Chassis
Removing the Power Cassette Module from the Cisco cBR Chassis
•T10 Torx screwdriver
Step 1 Loosen the two screws on the front power entry bezel using a 3/16" flat-blade torque screwdriver. Remove the bezel
from the chassis.
Figure 6: Removing the Front Power Entry Bezel from the Chassis
Front power entry bezel2Screw1
Cisco Converged Broadband Routers Hardware Installation Guide
10
Maintaining the Power System in the Cisco cBR Chassis
Removing the Power Cassette Module from the Cisco cBR Chassis
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