3300 W DC PEM Module for Cisco UBR10012 Broadband Router Chassis
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Table of Contents
Preparing to Unpack the DC PEM Module
Electrical Equipment Guidelines
Preventing Electrostatic Discharge Damage
Unpacking and Preparing the PEM
Installing the DC Power Entry Modules in the Chassis
Installing the DC Power Entry Modules
Connecting the DC-input Power Cables on the DC Power Entry Modules
Powering On the DC Power Entry Module
Removing and Replacing a 3300W DC PEM
Replacing a Redundant 3300W DC PEM
Migrating from the 2400W DC PEM to the 3300W DC PEM
Troubleshooting the 3300W DC PEM
Obtaining Documentation and Submitting a Service Request
Contents
This document includes procedures for installing, replacing, and removing the 3300 W DC power entry module (DC PEM) in the Cisco uBR10012 universal broadband router.
This document provides the following information:
- Objective
- Audience
- Overview
- Preparing to Unpack the DC PEM Module
- Installing the DC Power Entry Modules in the Chassis
- Removing and Replacing a 3300 W DC PEM
- Migrating from the 2400 W DC PEM to the 3300 W DC PEM
- Troubleshooting the 3300 W DC PEM
- Related Documentation
- Obtaining Documentation and Submitting a Service Request
Objective
The purpose of this document is to provide installation, removal, and troubleshooting information for the 3300 W DC power entry module (DC PEM) installed in the Cisco uBR10012 universal broadband router.
Audience
This document is intended for service engineers who are familiar with Cisco products and headend cable installation procedures.
Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement 1030.
Overview
The Cisco uBR10012 router is shipped with two DC power entry modules (DC PEMs) that provide power to the system. One DC PEM can provide sufficient power for a fully configured chassis. However, if one DC PEM fails, the other automatically begins providing power to the entire chassis, without impacting the system operation.
The two DC PEMs provide filtered, redundant, and load shared DC power to the Cisco uBR10012 chassis. The DC PEM modules can be identified by their product part numbers.
The DC PEM modules supported on the Cisco uBR10012 chassis are:
Table 1 summarizes the specifications of the DC PEM modules.
Table 1 Specifications of the DC PEM modules
This document includes procedures for installing, replacing, and removing the 3300 W DC PEM in the Cisco uBR10012 universal broadband router. For information on migrating from the 2400 W DC PEM to the 3300 W DC PEM, see “Migrating from the 2400 W DC PEM to the 3300 W DC PEM” section.
For information on installing, replacing, and removing the 2400 W DC PEM, see DC Power Entry Module for the Cisco uBR10012 Universal Broadband Router .
Note In the sections that follow, all references to the 2400 W DC PEM also apply to the 3000 W DC PEM. For example, migrating from the 2400 W DC PEM to the 3300 W DC PEM implies that the same procedure is applicable for migrating the 3000 W DC PEM to the 3300 W DC PEM.
If 100-120 VAC is the only available power source at the facility, then use the external AC-input power shelf with the Cisco uBR10012 router The AC-input power shelf converts AC power from an external AC power supply source into DC power that is suitable for powering on the Cisco uBR10012 router.
We recommend you use the external Lineage AC-DC power shelf in conjunction with the Cisco uBR10012 router chassis. For an overview of the Lineage AC-DC power shelf, and connecting the Lineage AC-DC power shelf with the Cisco uBR10012 router, see Cisco uBR10012 Universal Broadband Router Hardware Installation Guide .
Note The output of the show inventory command does not display the serial numbers for the DC PEMs (UBR10-PWR-DC and UBR10-PWR-DC-PLUS). Visually inspect the serial number labels printed on the DC PEMs to locate the serial number.
Physical Description
The 3300 W DC PEM module provides a power output of 3300 W with dual DC-input power connections. This DC PEM module provides:
Figure 1 shows a Cisco uBR10012 router with dual 3300 W DC PEMs installed.
Figure 1 Cisco uBR10012 Router with Dual 3300 W DC PEM Modules
Caution Do not attempt to lift the Cisco uBR10012 chassis by using the two handles on the front of the DC PEM. The handles on the DC PEM are for removing and inserting the PEM into the Cisco uBR10012 chassis.
Figure 2 shows the faceplate of the DC PEM module, which has:
- Two DC power terminal blocks—These connect to the facility power source.
- DC power enable switch—This powers on the DC PEM module.
- Two handles—These help during the removal and installation of the DC PEM module.
- External alarm connector—This is an input connector to monitor the alarms from the external AC-input power shelf.
- DC power cord clips—These help to secure the DC-input power cables.
Figure 2 DC PEM Front Panel (UBR10-PWR-DC-PLUS=)
LEDs
Five LEDs (V1 POWER, V2 POWER, POWER, MISWIRE, and FAULT) indicate the status of the DC PEM module. In addition, there is a PRODUCT ID LED/switch on the front panel of the DC PEM module.
Tip Use a small object, such as a paper clip, to press the PRODUCT ID LED/switch inside the cavity on the front panel of the DC PEM module.
Table 2 describes the LEDs on the 3300 W DC PEM.
Indicates that the PEM is receiving power from the DC power source. These LEDs only indicate that an input voltage is present on the PEMs and not that the PEM is powered on.
Note This LED may illuminate even if the voltage applied is not in the proper range to power on the PEM.
Indicates that the PEM is receiving power from the DC power source. These LEDs only indicate that an input voltage is present on the PEMs and not that the PEM is powered on.
Note This LED may illuminate even if the voltage applied is not in the proper range to power on the PEM.
Indicates that the power at the output is within the required voltage, and the PEM is providing power to the Cisco uBR10012 chassis.
Indicates that the –48/–60 VDC and RTN (+) wires are reversed.
Indicates that the external DC-input power is being received by the PEM, but that the PEM is not supplying power to the chassis, typically because the power enable switch on the DC PEM is set to the Standby (0) position.
If the power enable switch is in the ENABLE (|) position, and the FAULT LED is illuminated, the PEM is not operating correctly. For more information, see “Troubleshooting the 3300 W DC PEM” section.
When you press the PRODUCT ID LED/switch it illuminates (green) and the Cisco IOS software identifies the PEM module as UBR10-PWR-DC-PLUS only if you are running a supported Cisco IOS Release on the chassis. Otherwise, the software reports the default UBR10-PWR-DC product part number and the show environment command randomly displays the PEM type as AC instead of DC.
Table 3 lists the default activation status of the PRODUCT ID LED/switch when it is shipped.
Table 3 PRODUCT ID LED/Switch Default Activation Status
DC PEM module and Cisco uBR10012 chassis running unsupported Cisco IOS Release
DC PEM module and Cisco uBR10012 chassis running supported Cisco IOS Release3
3.For information on Cisco IOS Releases that support the PRODUCT ID LED/switch feature, see the Cisco uBR10012 Router Release Notes for Cisco IOS Release 12.2(33)SCE.
Note If you are installing the DC PEM module (spare) in an existing Cisco uBR10012 router chassis, ensure that the Cisco IOS Release running on the chassis supports the PRODUCT ID LED/switch feature before installing the module.
Note Even if you are using a supported Cisco IOS Release, the software may not identify the PEM module as UBR10-PWR-DC-PLUS. If this occurs, ensure that the PRODUCT ID LED/switch is illuminated and then either reload the software, or physically remove the PEM module for at least 1 minute and then reinsert it.
Preparing to Unpack the DC PEM Module
This section presents the following topics:
- Safety Guidelines
- Electrical Equipment Guidelines
- Preventing Electrostatic Discharge Damage
- Technical Specifications
- Unpacking and Preparing the PEM
Safety Guidelines
Follow the safety guidelines provided here, when working with any equipment that connects to electrical power.
Note For Class B emission compliance requirements, one ferrite bead must be installed on the alarm port wire exiting the chassis. Two ferrite beads (part number 36-0219-01) are included in the Cisco uBR10012 router accessory kit, and one ferrite bead is shipped with the spare DC power entry modules. For information on attaching the ferrite beads, see Cisco uBR10012 Broadband Router - Quick Start Guide.
Warning Connect the unit only to DC power source that complies with the safety extra-low voltage (SELV) requirements in IEC 60950 based safety standards. Statement 1033
Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Warning IMPORTANT SAFETY INSTRUCTIONS
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. Use the statement number provided at the end of each warning to locate its translation in the translated safety warnings that accompanied this device. Statement 1071
Warning This equipment must be grounded. Never defeat the ground conductor or operate the equipment in the absence of a suitably installed ground conductor. Contact the appropriate electrical inspection authority or an electrician if you are uncertain that suitable grounding is available. Statement 1024
Warning This equipment must be installed and maintained by service personnel as defined by AS/NZS 3260. Incorrectly connecting this equipment to a general-purpose outlet could be hazardous. The telecommunications lines must be disconnected 1) before unplugging the main power connector or 2) while the housing is open, or both. Statement 1043
Warning Take care when connecting units to the supply circuit so that wiring is not overloaded. Statement 1018
Electrical Equipment Guidelines
Follow these basic guidelines when working with any electrical equipment:
- Before beginning any procedures requiring access to the chassis interior, locate the emergency power-off switch for the room where you are working.
- Disconnect all power and external cables before moving a chassis.
- Do not work alone when potentially hazardous conditions exist.
- Never assume that power has been disconnected from a circuit; always check.
- Do not perform any action that creates a potential hazard to people or makes the equipment unsafe.
- Carefully examine your work area for possible hazards such as moist floors, ungrounded power extension cables, and missing safety grounds.
Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) damage, which occurs when electronic cards or components are improperly handled, can result in complete or intermittent failures.
The external AC-input power shelf and its AC power modules contain a printed circuit card that is fixed in a metal carrier. Electromagnetic interference (EMI) shielding and connectors are integral components of the carrier. Although the metal carrier helps to protect the cards from ESD, use an antistatic strap each time you handle the modules.
Guidelines for preventing ESD damage:
- Always use an ESD-preventive wrist or ankle strap and ensure that it makes good skin contact. Before removing a card from the chassis, connect the equipment end of the strap to a bare metal, unpainted surface on the chassis, or rack-mount.
- Handle components by the carrier edges only; avoid touching the card components or any connector pins.
- When removing a module, place it on an antistatic surface or in a static-shielding bag. If the module is to be returned to the factory, immediately place it in a static-shielding bag.
- Avoid contact between the modules and clothing. The wrist strap protects the card from ESD voltages on the body only; ESD voltages on clothing can still cause damage.
Technical Specifications
Table 4 lists the specifications for the 3300 W DC PEM module:
Table 5 shows the pinout of the RJ-45 alarm input connector on the front panel of the 3300 W DC PEM.
Steps
Step 1
Open the shipping carton by cutting the packing tape along the flaps on the top of the box.
Step 2
Step 3
What to do next
After performing this step, install the DC PEM modules, see “Installing the DC Power Entry Modules” section.
Installing the DC Power Entry Modules in the Chassis
This section presents the following topics:
- Installing the DC Power Entry Modules
- Connecting the DC-input Power Cables on the DC Power Entry Modules
- Powering On the DC Power Entry Module
Prerequisites
- The DC terminal blocks located beneath the DC PEMs on the midplane of the chassis are not used with the 3300 W DC PEM modules. Ensure that no DC-input power cables are connected to these terminal blocks.
- Ensure that you attach ferrite beads on the alarm cables or the grounding cables before you proceed to install the DC PEM modules in the chassis. You cannot access the alarm cables or grounding cables after the PEMs are installed in the chassis. For information about attaching the ferrite beads, see Cisco uBR10012 Broadband Router - Quick Start Guide .
- If you are installing the DC PEM module (spare) in an existing Cisco uBR10012 router chassis, ensure that the Cisco IOS Release running on the chassis supports the PRODUCT ID LED/switch feature before installing the module (see Table 3 ).
Steps
To install the 3300 W DC PEM modules on the Cisco uBR10012 router:
Step 1
Step 2
Step 3
Figure 3 DC Power Switch in Standby Position
Step 4
Caution Ensure that the alarm cables and the DC-input power cables are out of the way before you slide the PEMs into the power bay.
Step 5
Note To tighten the captive screws on the DC PEM modules, the installation torque used should be 8 in-lbs.
Step 6
Step 7
What to do next
After performing this task, connect the DC-input power cables, see “Connecting the DC-input Power Cables on the DC Power Entry Modules” section.
Prerequisites
Before connecting the cables, you must install the DC PEM modules in the chassis. To install the DC PEM modules, see the “Installing the DC Power Entry Modules” section .
Required Tools and Equipment
- Flat-head screwdriver
- 10 mm hex socket driver
- DC-input power cables, customer provided
- 0.625-inch dual-hole lugs, customer provided
- DC PEM module (UBR10-PWR-DC-PLUS=)
- Front cover (U-CHAS-COVER-PLUS=)
Note The 3300 W DC PEM module accepts a maximum of 6 AWG wire or 4 AWG high-flex wire for the DC-input cables. If you are using the 4 AWG wire, use a high-flex high strand count power cable for optimal routing of the cables under the front cover. The 2 AWG wire is not supported on the 3300 W DC PEM module.
Steps
To connect the DC-input power cables on the 3300 W DC PEM modules:
Step 1
Step 2
Caution Do not connect power to the DC power sources or apply power to the chassis. This is done as part of the system startup after all connections are made. If you are using the external AC-input power shelf as the DC power source, verify that the AC-input power cords are not plugged into the AC power outlets.
Step 3
Step 4
Step 5
Step 6
Note Secure the nuts using a 10 mm hex socket driver with an installation torque of 50-in lbs.
Caution You must attach both pairs of DC-input cables to the DC terminal blocks on each PEM for proper functioning of the PEMs.
Step 7
Step 8
Note Ensure that you lift the handles and route the cables underneath the handles and through the power cord clips of the PEM modules as shown in Figure 5 so that the front cover fits on the Cisco uBR10012 chassis.
Figure 5 Routing the DC-input Cables on the UBR10-PWR-DC-PLUS= Module
Step 9
Step 10
Note The front cover (U-CHAS-COVER-PLUS=) is designed for the 3300 W DC PEM modules with notches on the sides such that the DC-input power cables route through it, and the front cover fits the Cisco uBR10012 chassis router.
Step 11
Figure 6 Routing the DC-input Power Cables Through the Front Cover
What to do next
After performing this task, power on the DC PEM module, see “Powering On the DC Power Entry Module” section.
Prerequisites
- Verify if the DC-input power cables are connected, see “Connecting the DC-input Power Cables on the DC Power Entry Modules” section .
- Verify if the safety covers are installed on the DC terminal blocks on the PEMs.
Steps
To power-on the 3300 W DC PEM module:
Step 1
Step 2
Step 3
Note If you are using the external AC-input power shelf, this step requires plugging in multiple AC power cords into the back of the unit and into the outlets providing the AC power source.
Note The internal fans on the 3300 W DC PEM module start working and are audible as soon as the DC-input power cables are connected to the facility power source and the facility power is turned on, although the DC power enable switch is in Standby (0) position.
Step 4
The V1 POWER and V2 POWER LEDs on each PEM should illuminate (green). These LEDs only indicate that an input voltage is present on the PEMs and not that the PEM is powered on. In addition, the FAULT LED on each PEM illuminates (yellow). If the FAULT LED on the PEMs do not illuminate (yellow), see the “Troubleshooting the 3300 W DC PEM” section .
Verify that the MISWIRE LED is not illuminated. If it illuminates (yellow), it indicates that the DC-input power cables are reversed, see the “Troubleshooting the 3300 W DC PEM” section.
Tip The label on the chassis indicates the actual provided voltage range.
Step 5
Figure 7 DC Power Switch in ENABLE Position
Step 6
- The V1 POWER and V2 POWER LEDs on each PEM are illuminated (green). In addition, the POWER LED on each PEM is illuminated (green), indicating that power is being received and is being delivered to the chassis.
- If you are running a Cisco IOS Release that supports the PRODCUT ID LED/switch feature, verify that the PRODUCT ID LED/switch illuminates (green).
Note If you are running a Cisco IOS Release that does not support the PRODUCT ID LED feature, ensure that the PRODUCT ID LED/switch is not illuminated. For information on Cisco IOS Releases that support the PRODUCT ID LED/switch feature, see Cisco uBR10012 Router Release Notes for Cisco IOS Release 12.2(33)SCE.
Note If the FAULT LED illuminates (yellow), see the “Troubleshooting the 3300 W DC PEM” section.
Removing and Replacing a 3300 W DC PEM
Note If a 3300 W DC PEM fails, order and install a replacement DC PEM as soon as possible. The product order number for a replacement 3300 W DC PEM is UBR10-PWR-DC-PLUS=. For proper airflow, cooling, and safety, do not remove the failed unit until the replacement unit is available for installation.
This section contains information on removing and replacing 3300 W DC PEM modules in the Cisco uBR10012 router chassis.
Tip The 3300 W DC PEM is operating correctly when its POWER LED is illuminated (green). When the FAULT LED is illuminated (yellow), the DC PEM is receiving DC-input power but is not providing power to the system. Verify that the DC PEM is fully inserted into the power bay and that its captive screws have been tightened. Then, set the DC power enable switch on the 3300 W DC PEM to the Standby (0) position, wait several seconds, and then switch it to the ENABLE (|) position. If the FAULT LED does not go off and the POWER LED does not illuminate (green), replace the 3300 W DC PEM.
This section represents the following topics:
Replacing a Redundant 3300 W DC PEM
This procedure is needed when the FAULT LED is illuminated (yellow) and the troubleshooting steps in the “Troubleshooting the 3300 W DC PEM” section do not correct the problem.
Steps
Tip If you want to replace both 3300 W DC PEMs without shutting down the router, repeat this procedure for each DC PEM, one at a time. Do not use this procedure if both 3300 W DC PEMs have failed; instead, use the procedure in the “Replacing Both 3300 W DC PEMs” section.
Warning Before performing any of the following procedures, ensure that power is removed from the DC circuit, the PEM is plugged into. To ensure that all power is OFF, locate the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to the OFF position, and tape the switch handle of the circuit breaker in the OFF position. Statement 1003.
To replace and install a redundant 3300 W DC PEM module:
Step 1
Step 2
Caution Do not power off both 3300 W DC PEMs because it will cause the system to shut down and all data traffic to stop. Power off only the 3300 W DC PEM you are replacing.
Step 3
Figure 8 Removing the Alarm Connector from the DC PEM
Step 4
Tip For true redundant power protection, ensure that you are using separate DC power sources for each 3300 W DC PEM.
Step 5
Step 6
Step 7
Step 8
Step 9
Step 10
Step 11
Step 12
Step 13
Note You must attach both pairs of DC-input cables to the DC terminal blocks on each PEM for proper functioning of the PEMs.
Step 14
Replacing Both 3300 W DC PEMs
Note The illustrations for this procedure are identical to the illustrations in the “Replacing a Redundant 3300 W DC PEM” section and therefore not repeated.
Prerequisites
Note This procedure requires that you shut down the Cisco uBR10012 router and remove all power to the system. To avoid this, we recommend replacing each DC PEM, one at a time, by following the instructions in “Replacing a Redundant 3300 W DC PEM” section.
This procedure is needed only in the following situations:
- When the failure LEDs (MISWIRE or FAULT) on both 3300 W DC PEMs are illuminated, indicating a problem with either the DC power source or the 3300 W DC PEMs.
- A single DC power source is currently being used for both DC PEMs, and you need to rewire the DC power connections so as to use a separate DC power source for each DC PEM (this is the recommended configuration).
- You want to connect the alarm indicators after the initial installation of the Cisco uBR10012 router. For more information on connecting the alarm indicators, see Cisco uBR10012 Universal Broadband Router - Quick Start Guide .
- You need to move the chassis or reinstall it in another location.
Steps
To replace both the 3300 W DC PEM modules:
Step 1
Step 2
a.
b.
c.
Step 3
Step 4
Step 5
Step 6
Step 7
Step 8
Note If you are using the external AC-input power shelf, disconnect the AC power cord from each of the AC-input power modules.
Step 9
Step 10
Step 11
Step 12
Step 13
Note You must attach both pairs of DC-input cables to the DC terminal blocks on each PEM for proper functioning of the PEMs.
Step 14
Migrating from the 2400 W DC PEM to the 3300 W DC PEM
This section describes the steps for a seamless migration from the 2400 W DC PEM modules to the 3300 W DC PEM modules.
Note In this section, all references to the 2400 W DC PEM also apply to the 3000 W DC PEM. The same procedure is applicable for migrating the 3000 W DC PEM to the 3300 W DC PEM.
Prerequisites
- The 3300 W DC PEM module requires four DC-input power cables to power-on as against the two DC power cables for the 2400 W DC PEM module. The DC-input power cables are attached to the DC power terminal blocks on the front panel of the 3300 W DC PEM.
- The DC terminal blocks located beneath the DC PEMs on the midplane of the chassis are not used with the 3300 W DC PEM modules.
- If you are using DC power cables from separate DC facility power sources, then you need not shut down both the power sources. If you are using an existing DC power cable that is used for 2400 W or 3000 W DC PEM, the installation should be examined prior to migration for proper cable routing. You must attach the dual-hole lugs to the ends of the DC-input power cables before using them with the 3300 W DC PEM.
- The U-CHAS-COVER-PLUS= front cover must be used with the Cisco uBR10012 chassis for proper routing of the DC-input power cables from the 3300 W DC PEMs through the chassis.
Note You need not shut down the Cisco uBR10012 router to replace a 2400 W DC PEM module with a 3300 W DC PEM module. To avoid shutting down the Cisco uBR10012 router, you must replace one 2400 W DC PEM at a time; bring the 3300 W DC PEM module online, and then replace the other 2400 W DC PEM module.
Required Tools and Equipment
- 3300 W DC PEM module (UBR10-PWR-DC-PLUS=)
- 2400 W DC PEM module (UBR10-PWR-DC=)
- Four DC-input power cables, customer provided
- 0.625-inch dual-hole lugs, customer provided
- Front cover (U-CHAS-COVER-PLUS=)
- Flat-head screwdriver
- 10 mm hex socket driver
Note The 3300 W DC PEM module accepts a maximum of 6 AWG wire or 4 AWG high-flex wire for the DC-input cables. If you are using the 4 AWG wire, use a high-flex high strand count power cable for optimal routing of the cables under the front cover. The 2 AWG wire is not supported on the 3300 W DC PEM module.
Steps
To replace the 2400 W DC PEM with the 3300 W DC PEM module:
Step 1
Step 2
a.
b.
c.
d.
e.
f.
Step 3
Step 4
Use the following methods to measure the voltage delivered to the backplane:
- External AC-input power shelf—Use a hand-held meter at the connector below the 2400 W DC PEMs to measure the voltage. The voltage should be from –42 V to –56 V.
Note The applied voltage on the external AC-input power shelf is normally within the required range unless it is changed to –56 V or more.
- DC power source at facility—Use a hand-held meter at the DC input terminal blocks located beneath the 2400 W DC PEM on the midplane of the chassis to measure the voltage. The voltage should be from –42 V to –56 V.
Ensure that the measured voltage is in the prescribed range before proceeding to the next step.
Caution The voltage delivered to the backplane cannot be measured directly on a fully populated chassis or an empty DC PEM slot.
Step 5
Step 6
Note The 3300 W DC PEM has two DC power terminal blocks on the front panel. Four DC-input power cables must be connected to the two DC power terminal blocks and powered on for the DC PEM to function.
Step 7
Note Verify that the V1 POWER and V2 POWER LEDs illuminate (green) on the 3300 W AC PEM module.
Step 8
Step 9
Note The backplane voltage supplied by the 3300 W DC PEM module to the Cisco uBR10012 chassis will be –57.5 V.
Step 10
Note You need not measure the voltage delivered to the backplane when you replace the second 2400 W DC PEM module with the 3300 W DC PEM module. You can skip Step 4 while replacing the second 2400 W DC PEM with the 3300 W DC PEM.
Step 11
Step 12
Troubleshooting the 3300 W DC PEM
Check the following to help isolate a problem with the 3300W DC PEM:
- The DC-input power cables are installed into the DC PEM terminal blocks and the facility power source is turned on. The DC power enable switch is set to the Standby (0) position.
Check if the DC PEM is receiving power.
–
–
If these LEDs are not illuminated, check the external wiring and facility power source. If the fans are working and are audible, it indicates that the DC PEM is receiving power, so there could be a possibility that the LEDs are not working.
–
If this LED is not illuminated, there could be a possibility that the LED is not working, therefore the LED cannot indicate a valid fault on the PEM.
If the above LEDs do not illuminate but you are confident that PEM is receiving power, you can proceed to power on the PEM, see “Powering On the DC Power Entry Module” section. Ensure that the POWER LED is not illuminated (green). If this LED is illuminated, the DC PEM should be replaced. See the “Obtaining Documentation and Submitting a Service Request” section .
- The DC PEM is powered on, and the V1 POWER and V2 POWER LEDs are illuminated (unless they may not be working, as above). The DC power enable switch on the DC PEM is set to the ENABLE (|) position.
–
–
–
–
–
If the MISWIRE LED is illuminated, the –48/–60 VDC and return (RTN+) wires are reversed. Ensure that the facility power source is turned off immediately, see “Connecting the DC-input Power Cables on the DC Power Entry Modules” section to reconnect the wires correctly before powering on the PEM module.
–
–
Verify that the temperatures are within the valid operating ranges, and that the fan assembly and both DC PEM modules are present and OK. If this is not the case, check for the following actions:
–
–
–
Note When using the external AC-input power shelf, the show environment command provides information on whether a power module in the power shelf is missing, is reporting a fault, is experiencing an over-temperature condition, or is not receiving AC-input power. For information on the external AC-input power shelf and on connecting it to the DC PEM, see Cisco uBR10012 Universal Broadband Router Hardware Installation Guide.
Related Documentation
Cisco uBR10012 Series Universal Broadband Router Quick Start Guide
http://www.cisco.com/en/US/docs/cable/cmts/ubr10012/quick/start/10kqsg_2.html
Cisco uBR10012 Universal Broadband Router Hardware Installation Guide at the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/cable/ubr10k/ubr10012/hig/index.htm
Cisco uBR10012 Universal Broadband Router Software Configuration Guide at the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/cable/ubr10k/ubr10012/scg/index.htm
Obtaining Documentation and Submitting a Service Request
For information on obtaining documentation, using the Cisco Bug Search Tool (BST), submitting a service request, and gathering additional information, see What’s New in Cisco Product Documentation at: http://www.cisco.com/en/US/docs/general/whatsnew/whatsnew.html .
Subscribe to What’s New in Cisco Product Documentation , which lists all new and revised Cisco technical documentation, as an RSS feed and deliver content directly to your desktop using a reader application. The RSS feeds are a free service.
This document is to be used in conjunction with the Cisco uBR10000 Series Universal Broadband Router Hardware Installation Guide.
Cisco and the Cisco logo are trademarks or registered trademarks of Cisco and/or its affiliates in the U.S. and other countries. To view a list of Cisco trademarks, go to this URL: www.cisco.com/go/trademarks . Third-party trademarks mentioned are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (1110R)
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