Table Of Contents
Cisco 12016, Cisco 12416, and Cisco 12816 Router Power System Procedures Guide
Introduction
Contents
Power Supply and Power Shelf Compatibility
Installing Upgrade Kits
Prerequisites and Preparation
Safety Guidelines
Safety Warnings
Preventing Electrostatic Discharge Damage
Installation Guidelines
Required Tools and Equipment
Related Documentation
Removing and Replacing an AC Power Supply
Troubleshooting the AC Power Supply Installation
Removing and Replacing the Standard AC-Input Power Shelf
Removing and Replacing the Optional 2-Level AC-Input Power Shelf
Troubleshooting the AC Power Shelf Installation
Upgrading the AC-Input Power Shelf
Removing and Replacing a DC PEM
Troubleshooting the DC PEM Installation
Removing and Replacing the DC-Input Power Shelf
Troubleshooting the DC Power Shelf Installation
Regulatory, Compliance, and Safety Information
Translated Safety Warnings and Agency Approvals
Electromagnetic Compatibility Regulatory Statements
FCC Class A Compliance
CISPR 22
Canada
Europe—EU
VCCI Class A Notice for Japan
Class A Notice for Hungary
Class A Notice for Taiwan and Other Traditional Chinese Markets
Class A Notice for Korea
Obtaining Documentation
Cisco.com
Documentation CD-ROM
Ordering Documentation
Documentation Feedback
Obtaining Technical Assistance
Cisco TAC Website
Opening a TAC Case
TAC Case Priority Definitions
Obtaining Additional Publications and Information
Cisco 12016, Cisco 12416, and Cisco 12816 Router Power System Procedures Guide
Cisco Product Numbers: 12000/16-AC-PEM=, 12000/16-AC-SHELF=, 12000/16-AC4-SHELF=, 12000/16-DC-PEM=, 12000/16-DC-SHELF=, PWR-GSR16-AC=, PWR-GSR16-DC=, PWR-GSR16-AC-SH=, PWR-GSR16-DC-SH=, PWR-GSR16-AC4-SH=)
Upgrade Kits: 12000/16-AC-UP=, 12000/16-AC4-UP=, 12000/16-DC-UP=
Introduction
This publication contains removal and replacement procedures for the AC and DC power systems used with Cisco 12000/16 routers. Also included are AC-input power shelf upgrade instructions, specifications, and other information that applies to the AC and DC power system.
Note 
The illustrations in this guide represent both original and newer power supplies and power shelves shipping with the Cisco 12000/16 routers. Depending on your system, these components may not look exactly like those in your chassis, but the removal and replacement procedures are essentially the same.
Contents
The following sections are included in this publication:
•Power Supply and Power Shelf Compatibility
•Prerequisites and Preparation
•Installation Guidelines
•Removing and Replacing an AC Power Supply
•Troubleshooting the AC Power Supply Installation
•Removing and Replacing the Standard AC-Input Power Shelf
•Removing and Replacing the Optional 2-Level AC-Input Power Shelf
•Troubleshooting the AC Power Shelf Installation
•Upgrading the AC-Input Power Shelf
•Removing and Replacing a DC PEM
•Troubleshooting the DC PEM Installation
•Removing and Replacing the DC-Input Power Shelf
•Troubleshooting the DC Power Shelf Installation
•Regulatory, Compliance, and Safety Information
•Obtaining Documentation
•Obtaining Technical Assistance
•Obtaining Additional Publications and Information
Power Supply and Power Shelf Compatibility
Cisco 12000/16 routers are available with either an AC or a DC power supply system. Two types of power supplies are available for these systems:
•Original power supplies (rated at 2000 W)—Shipped with older systems, or
•Upgraded replacement power supplies (rated at 2500 W AC or 2400 W DC)—Ships currently
Removal and replacement procedures are the same for either type of power supply, but because of their capacity and physical differences, you cannot mix different types of power supplies within the same power shelf.
Caution Newer power supplies (AC and DC) require upgraded power shelves. You cannot install a new power supply using the original power shelf. If you are replacing an older power supply with a new unit, you must replace
all of the power supplies
and the power shelf.
Before you attempt to install or replace them, be sure you know the power supplies and associated power shelf your system has (Table 1).
Table 1 Original and Replacement Components
Original Component
|
Replacement Component
|
AC Power Shelf (PWR-GSR16-AC-SH=)
Compatible only with 2000 W AC power supplies. Do not use with newer, 2500 W power supplies.
|
AC Power Shelf (12000/16-AC-SHELF=)
Compatible only with newer, 2500 W AC power supplies. Do not use with older, 2000 W power supplies.
|
Optional AC Power Shelf (PWR-GSR16-AC4-SH=)
Compatible only with 2000 W AC power supplies. Do not use with newer, 2500 W power supplies.
|
Optional AC Power Shelf (12000/16-AC4-SHLF=)
Compatible only with newer, 2500 W AC power supplies. Do not use with older, 2000 W power supplies.
|
AC Power Supply (PWR-GSR16-AC=)
Use to replace original 2000 W AC power supplies only. All power supplies in the power shelf must be 2000 W. Do not mix with newer, 2500 W power supplies.
|
AC Power Supply (12000/16-AC-PEM=)
Used to replace existing AC power supplies. All power supplies in the power shelf must be 2500 W. Do not mix with older, 2000 W power supplies.
Caution: 2500 W AC power supplies require new power shelves (GSR16-SHLF-AC= or GSR16-SHLF-AC4=).
|
DC Power Shelf (PWR-GSR16-DC-SH=)
Compatible only with 2000 W DC PEMs. Do not use with newer, 2400 W PEMs.
|
DC Power Shelf (12000/16-DC-SHELF=)
Compatible only with newer, 2400 W DC PEMs. Do not use with older, 2000 W PEMs.
|
DC Power Supply (PWR-GSR16-DC=)
Use to replace original 2000W DC PEMs only. All PEMs in the power shelf must be 2000 W. Do not mix with newer, 2400 W PEMs.
|
DC Power Supply (12000/16-DC-PEM=)
Used to replace existing DC power supplies. All PEMs must be 2400 W. Do not mix with older, 2000W PEMs.
Caution: 2400 W DC PEMs require new power shelves (GSR16-SHLF-DC=).
|
Installing Upgrade Kits
When installing a power system upgrade kit, you replace the following components:
•AC power upgrades (12000/16-AC-UP=, 12000/16-AC4-UP=):
–Power supplies (Removing and Replacing an AC Power Supply)
–Standard power shelf (Removing and Replacing the Standard AC-Input Power Shelf) or optional power shelf (Removing and Replacing the Optional 2-Level AC-Input Power Shelf)
•DC power upgrade (12000/10-DC-UP=):
–Power supplies (Removing and Replacing a DC PEM)
–Power shelf (Removing and Replacing the DC-Input Power Shelf)
Note A blower upgrade (not included in the power upgrade kit) is also required to meet NEBS extended temperature range requirements. To order the blower upgrade (12000/10/16-BLWER=), contact your Cisco representative.
Prerequisites and Preparation
Before you perform any of the procedures in this guide, be sure that you:
•Read the safety and ESD-prevention guidelines in this section.
•Ensure that you have all of the necessary tools, equipment, and related documentation before beginning the installation (see the "Installation Guidelines" section).
Safety Guidelines
Before you perform any procedure in this publication, review the safety guidelines in this section to avoid injuring yourself or damaging the equipment.
Safety Warnings
Safety warnings appear throughout this publication in procedures that, if performed incorrectly, may harm you. A warning symbol precedes each warning statement. The following warning is an example of a safety warning. It identifies the warning symbol and associates it with a bodily injury hazard.
Warning This warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. To see translations of the warnings that appear in this publication, refer to the Regulatory Compliance and Safety Information document that accompanies this device.
Preventing Electrostatic Discharge Damage
Many router components can be damaged by static electricity. Not exercising the proper electrostatic discharge (ESD) precautions can result in intermittent or complete component failures. To minimize the potential for ESD damage, always use an ESD-preventive antistatic wrist strap (or ankle strap) and ensure that it makes good skin contact.
Note You should periodically check the resistance value of the ESD-preventive strap. The measurement should be between 1 and 10 megohms.
Before performing the procedures in this guide, attach an ESD-preventive strap to your wrist and connect the leash to the chassis or to another grounded, bare metal surface as shown in Figure 1.
Figure 1 Connecting an ESD-Preventive Wrist Strap to the Chassis
Installation Guidelines
The Cisco 12000/16 routers support online insertion and removal (OIR). If you are replacing a redundant power supply, you can remove and install the power supply while the system remains powered on without causing an electrical hazard or damage to the system. This feature enables you replace a power supply while the system maintains all routing information and ensures session preservation.
However, to maintain operational redundancy, proper cooling, and meet EMI compliance standards, you must have all three (standard) or four (optional) working power supplies installed. When you remove a failed power supply with the router in operation, perform the replacement as quickly as possible. Make sure you have the tools and the replacement power supply ready before beginning the removal and installation procedure.
Caution You cannot mix power supply types within the chassis. If you are replacing a 2000 W power supply from an older system with a newer power supply, you must replace all of the older power supplies and the power shelf (see
Table 1). You must shut down the router to perform the upgrade. Be sure to notify the appropriate personnel that all routing traffic will stop while the upgrade takes place.
Required Tools and Equipment
The following tools and equipment are required to remove and install power supply components:
•ESD-preventive wrist strap
•Flat-blade screwdriver
•Phillips-head screwdriver
•10 mm wrench or nut driver
•Volt/ohm meter
Related Documentation
The following publications contain additional information:
•Cisco 12000/16 Router Installation and Configuration Guide
•Regulatory Compliance and Safety Information for the Cisco 12000 Series Internet Router
For additional information about related documentation, see the "Obtaining Documentation" section.
Removing and Replacing an AC Power Supply
This section provides the procedure to remove an AC power supply from the standard single-level AC power shelf. The procedure to remove an AC-input power supply from the optional double-level AC-input power shelf are identical to these; only the slot locations for AC-input power supplies are different (Figure 2).
Before beginning this procedure, be sure to read the "Installation Guidelines" section.
Figure 2 Standard and Optional AC Power Shelves
Figure 3 identifies the components of a 2000 W AC power supply.
Figure 3 2000 W AC Power Supply Components
Figure 4 identifies the components of a 2500 W AC power supply.
Figure 4 2500 W AC Power Supply Components
1
|
Ejector handle
|
2
|
Captive screw
|
To remove and replace an AC power supply, use the following procedure.
Caution You cannot mix power supply types within the chassis. If you plan to replace a 2000 W power supply from an older system with a newer, 2500 W power supply, you must replace all of the power supplies and the power shelf (see
Table 1). You must shut down the router to perform the upgrade. Be sure to notify the appropriate personnel that all routing traffic will stop while the upgrade takes place.
Step 1 Unplug the power supply cord from its AC outlet.
Step 2 Power off the circuit breaker assigned to that AC outlet.
Warning To ensure that power remains off while you are performing this procedure, tape the circuit breaker switch in the off (0) position.
Step 3 Remove the power supply from the power shelf.
•For 2000 W PEM—Go to Step 4.
•For 2500 W PEM—Go to Step 5.
Step 4 Remove the 2000 W PEM (Figure 5):
a. Release the ejector lever by lifting the spring clip.
b. Pivot the lever down to eject the power supply from its backplane connector.
c. Slide the power supply out of its bay while supporting it with your other hand.
Caution The power supply weighs approximately 12 pounds (5.4 kg). Use two hands when handling the power supply.
Figure 5 Removing a 2000 W AC Power Supply
Step 5 Remove the 2500W PEM (Figure 6):
a. Loosen the captive screw to release the ejector handle.
b. Pivot the ejector handle down to eject the power supply from its backplane connector.
c. Slide the power supply out of its bay while supporting it with your other hand.
Figure 6 Removing a 2500 W AC Power Supply
Step 6 Install the power supply:
•For 2000 W PEM—Go to Step 7.
•For 2500 W PEM—Go to Step 8.
Step 7 Install the 2000W PEM (Figure 7):
a. Slide the power supply into the bay until it mates with its backplane connector.
Caution To prevent damage to the power shelf backplane connector, do not use excessive force when inserting the power supply into its power shelf bay.
b. Lift up the ejector lever to hook it over the bottom edge of the power shelf.
c. Pivot the ejector lever until it is flush with the power supply and the spring clip locks the lever in place.
Caution If the spring clip does not lock the lever in place, the power supply is not completely seated. Eject the power supply and push it in firmly to reseat it.
Figure 7 Installing a 2000 W AC Power Supply
Step 8 Install the 2500 W power supply (Figure 8):
a. Slide the power supply into the bay until it mates with its backplane connector.
Caution To prevent damage to the power shelf backplane connector, do not use excessive force when inserting the power supply into its power shelf bay.
b. Lift up the ejector handle to hook it over the bottom edge of the power shelf.
c. Tighten the captive screw to secure the power supply in the shelf.
Figure 8 Installing a 2500 W AC Power Supply
Step 9 Plug the power supply cable into its AC outlet.
Step 10 Power on the circuit breaker to that AC outlet.
•After the power-on sequence completes, the (green) PWR OK indicator on the front of the power supply should light. If the indicator does not light, see the "Troubleshooting the AC Power Supply Installation" section.
Troubleshooting the AC Power Supply Installation
Use the following procedure to troubleshoot the AC power supply if it is not operating properly after installation.
Step 1 Make sure the power supply is seated properly as follows:
•Eject and reseat the PEM.
•The ejector lever is locked into place by its spring clip.
Step 2 Make sure the router is powered on and that all power cords are connected properly:
•Power cords on the back panel of the power shelf are secured in place with their retention clips.
•Power cords at the power source end are securely plugged into their own AC power outlet.
•The source AC circuit breaker is switched on.
Step 3 Check the power supply status indicators:
•PWR OK (green)—Indicates the power supply is operating normally, and the source AC voltage is within the nominal operating range of 200 VAC to 240 VAC. This indicator lights when the power supply is properly seated in position.
•FAULT (yellow)—Indicates the system detected a fault within the power supply or the incoming voltage is too low. This indicator remains off during normal operation.
If the indicator is on:
–Check that the source voltage is within the correct range: 170 to 262 VAC
–Remove and then apply power to the power supply by disconnecting its power cord. If the indicator remains on, replace the existing power supply with a spare.
–If the spare power supply also fails, the problem could be a faulty power shelf backplane connector. Power off the router and contact a Cisco service representative for assistance.
•TEMP (yellow)—Indicates that the power supply is in an over-temperature condition, causing a shut-down to occur.
Note If the temp indicator is on, the fault indicator also goes on.
–Verify that the power supply fan is operating properly.
–Verify that the blower modules are operating properly.
–If the power supply fan and blower modules are operating properly, replace the existing power supply with a spare.
•TEMP (flashing yellow—2500 W PEM only)—Indicates that a power supply fan is locked or malfunctioning.
Note If the temp indicator is flashing, the fault indicator also goes on.
–Check to see if the fan is operating. Remove any obstructions to the fan.
–If the fan is not operating, replace the power supply.
•ILIM (2000 W PEM only) (yellow)—Indicates the power supply is operating in a current-limiting condition.
–Each power cord should be connected to a dedicated AC power source. Each AC power supply operating in the nominal range of 200 to 240 VAC requires a minimum service of 20 A, North America (or 13 A, international).
•OC (2500 W PEM only) (steady, or flashing yellow after 10 seconds)—Indicates the output current of the power supply has exceeded its limit and that an overload or short has occurred.
Note If the OC indicator is on or flashing, the fault indicator also goes on.
–Remove and then apply power to the power supply by disconnecting its power cord.
–If the indicator remains on, try reseating the power supply.
–If the indicator remains on, replace the power supply.
Removing and Replacing the Standard AC-Input Power Shelf
Use the following procedure to remove and replace the standard AC-input power shelf.
Caution To remove and replace the power shelf, the system must be powered off. Be sure to notify the network administrator and other appropriate personnel that all routing traffic stops while the upgrade takes place.
Caution If you are upgrading to a new power shelf, you cannot use old power supplies. You must upgrade to newer, 2500 W power supplies (see
Table 1).
Step 1 Remove all of the power supplies as described in "Removing and Replacing an AC Power Supply" section.
Step 2 Disconnect each of the AC power cords from the back panel of the power shelf by lifting the retention clip and unplugging the cord (Figure 9).
Figure 9 Disconnecting AC Power Cords
Step 3 Unseat the power shelf from the chassis (Figure 10):
a. Loosen the two captive screws on each side of the power shelf.
b. Loosen the ejector jackscrew to unseat the power shelf from the power interface panel connectors.
Figure 10 Unseating the Power Shelf
Step 4 Remove the power shelf by grasping the flanges on each side and slowly pulling the shelf along the chassis track to remove it (Figure 11):
Warning The AC-input power shelf weighs approximately 21 pounds (9.5 kg). Use two hands to remove the power shelf.
Figure 11 Removing the AC-Input Power Shelf
Step 5 Insert the new power shelf halfway into the chassis.
Step 6 Connect the power shelf to the chassis power interface panel connectors (Figure 12):
a. Be sure the holes on each side of the power shelf are aligned with the guide pins on each side of the chassis.
b. Carefully slide the power shelf into place until its two connectors just mate with the power interface panel connectors.
Caution To prevent damage to the interface connectors, do not use excessive force when inserting the power shelf into the chassis.
Figure 12 Connecting the AC-Input Power Shelf
Step 7 Seat the power shelf to the chassis (Figure 13):
a. Tighten the ejector jackscrew.
b. Tighten the captive screws on each flange.
Figure 13 Seating the Power Shelf
Step 8 Reconnect each of the AC power cords to the back panel of the power shelf and secure them in place with their retention clips (Figure 14).
Figure 14 Reconnecting AC Power Cords
Step 9 Reinstall the power supplies as described in "Removing and Replacing an AC Power Supply" section.
Removing and Replacing the Optional 2-Level AC-Input Power Shelf
Use the following procedure to remove and replace the optional 2-level AC-input power shelf.
Caution To remove and replace the power shelf, the system must be powered off. Notify the network administrator and other appropriate personnel that all routing traffic stops while the upgrade takes place.
Caution If you are upgrading to a new power shelf, you cannot use old power supplies. You must upgrade to newer, 2500 W power supplies (see
Table 1).
Step 1 Remove all of the power supplies as described in Removing and Replacing an AC Power Supply.
Step 2 Disconnect each of the AC power cords from the back panel of the power shelf by lifting the retention clip and unplugging the cord (Figure 15).
Figure 15 Disconnecting the AC Power Cords
Step 3 Loosen the two captive screws on each side of the power shelf.
Step 4 Loosen the ejector jackscrew to unseat the power shelf from the connectors on the chassis power interface panel.
Step 5 Remove the power shelf by grasping the flanges on each side and slowly pulling the shelf along the chassis track to remove it (Figure 16).
Warning The AC-input power shelf weighs approximately 42 pounds (19.05 kg). Use two hands to remove the power shelf.
Figure 16 Removing the AC-Input Power Shelf
Step 6 Insert the new power shelf halfway into the chassis.
Step 7 Connect the power shelf to the chassis power interface panel connectors (Figure 17):
a. Be sure the holes on each side of the power shelf are aligned with the guide pins on each side of the chassis.
b. Carefully slide the power shelf into place until its two connectors just mate with the power interface panel connectors.
Caution To prevent damage to the interface connectors, do not use excessive force when inserting the power shelf into the chassis.
Figure 17 Connecting the AC-Input Power Shelf
Step 8 Install the power shelf by grasping the flanges on each side and slowly sliding the shelf into the chassis along the track (Figure 18):
a. Tighten the ejector jackscrew.
b. Tighten the two captive screws on each flange.
Figure 18 Installing the AC-Input Power Shelf
Step 9 Reconnect each of the AC power cords to the back panel of the power shelf and secure them in place with their retention clips (Figure 19).
Figure 19 Reconnecting AC Power Cords
Step 10 Reinstall the power supplies as described in "Removing and Replacing an AC Power Supply" section beginning with Step 6.
Troubleshooting the AC Power Shelf Installation
Use the following procedure to troubleshoot the AC power shelf if it does not operate properly after installation.
Step 1 Make sure that the power shelf is seated properly:
•The jackscrew is tightened securely.
•The captive screws on the flanges are tightened securely.
Step 2 Make sure each power supply is seated properly:
•The ejector lever is locked into place by its spring clip.
Step 3 Make sure the router is powered on and that all power cords are connected properly:
•Power cords on the back panel of the power shelf are secured in place with their retention clips.
•Power cords at the power source end are securely plugged into its own AC power outlet.
•Make sure the source AC circuit breaker is switched on.
Step 4 Check the power supply status indicators:
•PWR OK (green)—Indicates that the power supply is operating normally, and the source AC voltage is within the nominal operating range of 200 VAC to 240 VAC. When the power supply is properly seated, this indicator is on.
•FAULT (yellow)—Indicates that the system has detected a fault within the power supply or the incoming voltage is too low. During normal operation, this indicator remains off.
If the indicator is on:
–Check that the source voltage is within the correct range: 170 to 262 VAC
–Remove and then apply power to the power supply by disconnecting its power cord. If the indicator remains on, replace the existing power supply with a spare.
–If the spare power supply also fails, the problem could be a faulty power shelf backplane connector. Power off the router and contact a Cisco service representative for assistance.
•TEMP (yellow)—Indicates that the power supply is in an over-temperature condition, causing a shut-down to occur.
Note If the temp indicator is on, the fault indicator also goes on.
–Verify that the power supply fan is operating properly.
–Verify that the blower modules are operating properly.
–If the blower modules are operating properly, replace the existing power supply with a spare.
•TEMP (flashing yellow—2500 W PEM only)—Indicates that a power supply fan is locked or malfunctioning.
Note If the temp indicator is flashing, the fault indicator also goes on.
–Check to see if the fan is operating. Remove anything that may be obstructing the fan.
–If the fan is not operating, replace the power supply.
•ILIM (2000 W PEM only) (yellow)—Indicates the power supply is operating in a current-limiting condition.
–Each power cord should be connected to a dedicated AC power source. Each AC power supply operating in the nominal range of 200 to 240 VAC requires a minimum service of 20 A, North America (or 13 A, international).
•OC (2500 W PEM only) (steady, or flashing yellow after 10 seconds)—Indicates the output current of the power supply exceeded its limit and an overload or short has occurred.
Note If the OC indicator is on or flashing, the fault indicator also goes on.
–Remove and then apply power to the power supply by disconnecting its power cord.
–If the indicator remains on, try reseating the power supply.
–If the indicator remains on, replace the power supply.
Upgrading the AC-Input Power Shelf
Use the following procedure to upgrade your router from the standard, 1-level AC power shelf to an optional, 2-level AC power shelf.
Note A router with an optional, 2-level power shelf is 77.5 inches (196.85 cm) in height and does not fit into a standard 7-foot rack.
Step 1 Remove the standard one-level power shelf following the procedures in "Removing and Replacing the Standard AC-Input Power Shelf" section through Step 4.
Step 2 Install the optional, 2-level power shelf following the procedures in "Removing and Replacing the Optional 2-Level AC-Input Power Shelf" section beginning with Step 6.
Step 3 Replace the old cover with the new cover you received in the upgrade kit.
a. Hold the front cover by its outside edges and align the four ball studs on the back of the cover with the sockets on the front of the chassis.
b. Push in the front cover until all four ball studs snap into their sockets and the front cover is flush against the front of the chassis.
Removing and Replacing a DC PEM
This section contains the procedure to remove and replace an DC PEM from the chassis. Before you begin this procedure, read the "Installation Guidelines" section.
Figure 20 identifies the components of a 2000 W DC power supply.
Figure 20 2000 W DC Power Supply Components
Figure 21 identifies the components of a 2400 W DC power supply.
Figure 21 2400 W DC Power Supply Components
1
|
Handle
|
3
|
Ejector lever
|
2
|
Fan
|
4
|
Power switch
|
Caution You cannot mix power supply types within the chassis. If you plan to replace a 2000 W PEM from an old system with a new 2400 W PEM, you must replace all of the older PEMs and the power shelf (see
Table 1). To perform the upgrade, you must shut down the router. Be sure to notify the system administrator and other appropriate personnel that all routing traffic stops while the upgrade takes place.
Use the following procedure to remove and replace a DC PEM.
Step 1 Power off the PEM by switching its circuit breaker off (see Figure 20).
Step 2 Power off the DC circuit breaker assigned to that PEM.
Warning To ensure that power remains off while you are performing this procedure, tape the circuit breaker switch in the off (0) position.
Step 3 Loosen the captive screw on the ejector handle and pivot the lever down to eject the PEM from its bay (Figure 22).
Step 4 Remove the PEM from the power shelf (Figure 22):
a. Pull the PEM halfway out of its bay.
b. Slide the PEM out of its bay while supporting it with your other hand.
Warning The DC PEM weighs approximately 6 pounds (2.7 kg). Use two hands to remove the power supply.
Figure 22 Removing a DC PEM
Step 5 Install the new DC PEM into the power shelf (Figure 23):
a. Slide the PEM halfway into the chassis.
b. Slowly push the power supply into the chassis until it mates with the backplane connector at the back of the bay.
c. Position the bottom of the ejector lever in the slot on the bottom of the power shelf and lift the ejector lever into place to seat the PEM to the backplane connector.
Caution To prevent damage to the power shelf backplane connector, do not use excessive force when inserting the PEM into its power shelf bay.
d. Tighten the captive screw to secure the PEM in the power shelf.
Note Because the PEM is powered redundantly by other PEMs in its power load zone, the fault indicator may go on. This can happen even if the circuit breaker for that PEM is switched off, or if there is no DC source power to the PEM. When power is supplied to the PEM and the circuit breaker is switched on, the fault indicator should go off and the PWR OK indicator should light.
Figure 23 Installing a DC PEM
Step 6 Power on the DC circuit breaker assigned to that PEM.
Step 7 Power on the PEM by switching on its circuit breaker.
•After the power-on sequence completes, the (green) PWR OK indicator on the front of the PEM should light. If the indicator does not light, see the "Troubleshooting the DC PEM Installation" section.
Troubleshooting the DC PEM Installation
Use the following procedure to troubleshoot the DC PEM if it is not operating properly after installation.
Step 1 Make sure the PEM is seated properly:
•Eject and reseat the PEM.
•The captive screw on the ejector lever are tightened securely.
•The power switch is in the on (1) position (2400 W only).
Step 2 Make sure the router is powered on and that all power cords are connected properly:
•All power cables are securely connected to their terminal studs on the back panel.
•Each pair of PEM power cables are connected to a dedicated 60 A DC service.
•The source DC circuit breaker is switched on.
•The PEM circuit breaker is switched on (2000 W only).
–If circuit breaker does not stay switched on, replace the PEM.
Step 3 Check the PEM status indicators:
•PWR OK (green) — Indicates that the PEM is operating normally, and the source DC voltage is within the nominal operating range of -48 to -60 VDC. This indicator should light when the PEM circuit breaker is switched on.
•FAULT (yellow) — Indicates that the system has detected a fault within the PEM or the incoming voltage is too low. This indicator remains off during normal operation.
–Check that the source voltage is within the correct range: -40 to -72 VDC.
–Toggle the PEM circuit breaker off and then on. If the indicator remains on after several attempts to power it on, replace the existing PEM with a spare.
–If the spare PEM also fails, the problem could be a faulty power shelf backplane connector. Power off the router and contact a Cisco service representative for assistance.
•TEMP (yellow)—Indicates that the PEM is in an over-temperature condition causing a shut-down to occur.
Note If the temp indicator is on, the fault indicator also goes on.
–Verify that the power supply fan is operating properly.
–Verify that the blower modules are operating properly.
–If the power supply fan and the blower modules are operating properly, replace the existing PEM with a spare.
•TEMP (flashing yellow—2400 W PEM only)—Indicates that a power supply fan is locked or malfunctioning.
Note If the temp indicator is flashing, the fault indicator also goes on.
–Check to see if the fan is operating. Remove any obstructions to the fan.
–If the fan is not operational, replace the power supply.
•OC (2400 W PEM only) (steady, or flashing yellow after 10 seconds)—Indicates the output current of the power supply has exceeded its limit and that an overload or short has occurred.
Note If the OC indicator is on or flashing, the fault indicator also goes on.
–Remove and then apply power to the power supply by disconnecting its power cord.
–If the indicator remains on, try reseating the power supply.
–If the indicator remains on, replace the power supply.
Removing and Replacing the DC-Input Power Shelf
Use the following procedure to remove and replace the DC-input power shelf.
Caution To remove and replace the power shelf, the system must be powered off. Notify the network administrator and other appropriate personnel that all routing traffic stops while the upgrade takes place.
Caution If you are upgrading to a new power shelf, you cannot use old power supplies. You must upgrade to newer, 2400 W PEMs (see
Table 1).
Step 1 Remove all of the DC PEMs as described in the "Removing and Replacing a DC PEM" procedure through Step 4.
Step 2 Remove the power cable cover by loosening its retaining screw (Figure 24).
Figure 24 Removing the Source DC Power Cable Cover
Step 3 Measure the voltage across each pair of positive (+) and negative (-) terminals of the power shelf to be sure they are not receiving power.
•All readings should be 0 VDC.
Warning Do not proceed if all readings are not 0 (zero) volts. Make sure that the router is powered off and that all source DC circuit breakers are switched off. Repeat Step 3 before continuing.
Step 4 Disconnect each pair of power cables and the ground cable from the DC-input terminal studs as follows (Figure 25):
Caution Before removing cables, be sure to note the color for each type of cable (positive, negative, and ground). Because there is no color code standard for source DC wiring, you must be sure which power cables are connected to the proper positive (+) and negative (-) terminal studs. Typically, green (or green and yellow) indicate a ground cable, while power cable leads may be labeled positive (+) or negative (-). Because this is not always the case, the safest way to indicate the polarity of a cable is to note its color and identify it as described in this procedure.
Warning When disconnecting source DC power cables, always disconnect the ground cable last.
Beginning with terminal studs A1 (Figure 25):
a. Remove the nut and washer from the negative (-) terminal studs and disconnect the cable.
•Label the cable. For example: A1-.
b. Remove the nut and washer from the positive (+) terminal studs and disconnect the cable.
•Label the cable. For example: A1+.
Repeat steps a. and b. for the remaining pairs of terminal studs.
c. After all power cables are disconnected, remove the nut and washer from the ground terminal studs and disconnect the ground cable.
•Label the cable as "ground".
Figure 25 Disconnecting the Source DC Power Cables
Step 5 Unseat the power shelf from the chassis (Figure 26):
a. Loosen the two captive screws on each side of the power shelf.
b. Loosen the ejector jackscrew to unseat the power shelf from the connectors on the chassis power interface panel.
Warning The DC-input power shelf weighs approximately 10.2 pounds (4.6 kg). Use two hands to remove the power shelf.
Figure 26 Unseating the Power Shelf
Step 6 Remove the power shelf by grasping the flanges on each side and slowly pulling the shelf along the chassis track to remove it (Figure 27):
Figure 27 Removing the DC-Input Power Shelf
Step 7 Insert the new power shelf halfway into the chassis.
Step 8 Connect the power shelf to the chassis power interface panel connectors (Figure 28):
a. Be sure the holes on each side of the power shelf are aligned with the guide pins on each side of the chassis.
b. Carefully slide the power shelf into place until its two connectors just mate with the power interface panel connectors.
Caution To prevent damage to the interface connectors, do not use excessive force when inserting the power shelf into the chassis.
Figure 28 Connecting the DC-Input Power Shelf
Step 9 Seat the power shelf to the chassis (Figure 29):
a. Tighten the ejector jackscrew.
b. Tighten the captive screws on each flange.
Warning The DC-input power shelf weighs approximately 10.2 pounds (4.6 kg). Use two hands to remove the power shelf.
Figure 29 Seating the DC-Input Power Shelf
Step 10 Reconnect the ground and each pair of power cables to the DC-input terminal studs as follows (Figure 30):
Caution Be sure to connect the cables according to the color coding notes and labels you made in
Step 4.
Warning When reconnecting source DC power cables, always connect the ground cable first.
a. Reconnect the ground cable to the ground terminal studs.
Beginning with terminal studs B2:
b. Reconnect the positive cable to the positive (+) terminal studs. For example: B2+.
c. Reconnect the negative cable to the negative (-) terminal studs. For example: B2-.
Repeat steps b and c for the remaining pairs of terminal studs.
Figure 30 Reconnecting the Source DC Power Cables to the Power Shelf
Step 11 Power on the source DC circuit breakers for the PEMs.
Step 12 Verify the polarity and voltage readings across the pairs of positive and negative terminal studs:
•All voltage readings should be -48 to -60 VDC
Caution If any of the voltage readings are not within the specified range, do not proceed. Check for correct polarity and DC source voltage.
Step 13 Reinstall the power cable cover (Figure 31).
Figure 31 Reinstalling the Source DC Power Cable Cover
Step 14 Install all of the DC PEMs as described in the "Removing and Replacing a DC PEM" procedure beginning with Step 5.
Troubleshooting the DC Power Shelf Installation
Use the following procedure to troubleshoot the DC power shelf if it is not operating properly after installation.
Step 1 Make sure that the power shelf is seated properly:
•The jackscrew is tightened securely.
•The captive screws on the flanges are tightened securely.
Step 2 Make sure each power supply is seated properly:
•Eject and reseat the PEM.
•The captive screw on the ejector lever is tightened securely.
•The power switch is in the on (1) position (2400 W only).
Step 3 Make sure the router is powered on and that all power cords are connected properly:
•All power cables are securely connected to their terminal studs on the back panel.
•Each pair of PEM power cables is connected to a dedicated 60 A DC service.
•The source DC circuit breaker is switched on.
•The PEM circuit breaker is switched on (2000 W only).
–If the circuit breaker does not stay switched on, check the polarity of the power cables to the PEM.
Note A PEM trips its circuit breaker if it detects a reverse-polarity condition. This condition does not damage the PEM and it should operate properly after the polarity is corrected.
Step 4 Check the power supply status indicators:
•PWR OK (green)—Indicates that the PEM is operating normally, and the source DC voltage is within the nominal operating range of -48 to -60 VDC. When the PEM circuit breaker is switched on, this indicator lights.
•FAULT (yellow)—Indicates that the system detected a fault within the PEM or the incoming voltage is too low. During normal operation, this indicator remains off.
If the indicator is on:
–Check that the source voltage is within the correct range: -40 to -72 VDC.
–Toggle the PEM circuit breaker off and then on. If the indicator remains on after several attempts to power it on, replace the existing PEM with a spare.
–If the spare PEM also fails, the problem could be a faulty power shelf backplane connector. Power off the router and contact a Cisco service representative for assistance.
•TEMP (yellow)—Indicates that the PEM is in an over-temperature condition, causing a shut-down to occur.
Note If the temp indicator is on, the fault indicator is also on.
–Verify that the power supply fan is operating properly.
–Verify that the blower modules are operating properly.
–If the blower module is operating properly, replace the existing PEM with a spare.
•TEMP (flashing yellow—2400 W PEM only)—Indicates that a power supply fan is locked or malfunctioning.
Note If the temp indicator is flashing, the fault indicator is also on.
–Check to see if the fan is operating. Remove any obstructions to the fan.
–If the fan does not operate, replace the power supply.
•OC (2400 W PEM only) (steady, or flashing yellow after 10 seconds)—Indicates the output current of the power supply exceeded its limit and an overload or short has occurred.
Note If the OC indicator is on or flashing, the fault indicator is also on.
–Remove and then apply power to the power supply by disconnecting its power cord.
–If the indicator remains on, try reseating the power supply.
–If the indicator remains on, replace the power supply.
Regulatory, Compliance, and Safety Information
This section includes regulatory, compliance, and safety information in the following sections:
•Translated Safety Warnings and Agency Approvals
•Electromagnetic Compatibility Regulatory Statements
Translated Safety Warnings and Agency Approvals
The complete list of translated safety warnings and agency approvals is available in the Regulatory Compliance and Safety Information for Cisco 12000 Series Internet Routers publication (Document Number 78-4347-xx).
Electromagnetic Compatibility Regulatory Statements
FCC Class A Compliance
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio-frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communication. Operation of this equipment in a residential area is likely to cause harmful interference, in which case you are required to correct the interference at their own expense.
Modifying the equipment without Cisco authorization may result in the equipment no longer complying with FCC requirements for Class A digital devices. In that event, your right to use the equipment may be limited by FCC regulation and you may be required to correct any interference to radio or television communication at your own expense.
You can determine whether your equipment is causing interference by turning it off. If the interference stops, it was probably caused by the Cisco equipment or one of its peripheral devices. If the equipment causes interference to radio or television reception, try to correct the interference by using one or more of the following measures:
•Turn the television or ra
