Cisco CRS Carrier Routing System 16-Slot Line Card Chassis Enhanced Router Installation Guide
Removal of Chassis Components
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Table of Contents

Removing Chassis Components

Removing Line Cards, PLIMs and Associated Components

Replacing a Pillow Block

Removing a Switch Fabric Card

Prerequisites

Required Tools and Equipment

Steps

What to Do Next

Removing an MSC, FP, or LSP Line Card

Prerequisites

Required Tools and Equipment

Steps

What to Do Next

Removing a Fan Controller Card

Prerequisites

Required Tools and Equipment

Steps

What to Do Next

Removing an RP, PRP, or DRP Card

Prerequisites

Required Tools and Equipment

Steps

What to Do Next

Removing a PLIM

Prerequisites

Required Tools and Equipment

Steps

What to Do Next

Removing a Hard Drive

Prerequisites

Required Tools and Equipment

Steps

What to Do Next

Removing an RP PCMCIA Card

Prerequisites

Required Tools and Equipment

Steps

What to Do Next

Removing Optical Modules

Removing a Cable Management Bracket

Prerequisites

Required Tools and Equipment

Steps

What to Do Next

Removing the Rear (MSC) Side Cosmetic Components

Prerequisites

Required Tools and Equipment

Steps

Removing the Upper Rear Air Grille and Rear Kick Plate if Vertical Troughs Are Not Used

What to Do Next

Removing the Front (PLIM) Side Cosmetic Components

Prerequisites

Required Tools and Equipment

Steps

What to Do Next

Replacing Air Circulation Components

Information About the Air Circulation Components

About the Fan Trays

About the Air Filter

How to Replace Air Circulation Components

Replacing a Fan Tray

Replacing the Air Filter

Removing Power Components

Removing a Power Module Slot Cover

Prerequisites

Required Tools and Equipment

Steps

What to Do Next

Removing a Power Module

Prerequisites

Required Tools and Equipment

Steps

What to Do Next

Removing an Alarm Module

Prerequisites

Required Tools and Equipment

Steps

What to Do Next

Removing the Exhaust Air Deflector

Prerequisites

Required Tools and Equipment

Steps

What to Do Next

Removing AC or DC Power Shelf Wiring

Removing DC Power Shelf Wiring

Prerequisites

Required Tools and Equipment

Steps

What To Do Next

Removing AC Power Shelf Wiring

Prerequisites

Required Tools and Equipment

Steps

What To Do Next

Removing a Power Shelf

Prerequisites

Required Tools and Equipment

Steps

What to Do Next

Removing the Upper Grille Support

Prerequisites

Required Tools and Equipment

Steps

Removing the Chassis Ground Cable

Prerequisites

Required Tools and Equipment

Steps

Disconnecting the Power A Bus Bar

Prerequisites

Required Tools and Equipment

Steps

Converting from One Power System to the Other

Steps

What to Do Next

Removing Chassis Components

This chapter provides instructions on how to remove components from the Cisco CRS Series Enhanced 16-Slot Line Card Chassis.

This chapter presents the following topics:

Removing Line Cards, PLIMs and Associated Components

This section provides instructions on how to remove the Cisco CRS Series Enhanced 16-Slot Line Card Chassis (LCC) cards, physical layer interface modules (PLIMs), and any associated components.

For general information about installing and removing cards, PLIMs, and associated components, see the “About Installing and Removing Cards and Associated Components” section.

For information on installing and removing the slot covers and impedance carriers, see the “Installing or Removing a Slot Cover” section and the “Installing or Removing an Impedance Carrier” section.

This section presents the following topics:

Replacing a Pillow Block

This section describes how to replace a damaged pillow block on the chassis. A pillow block is a bracket with a pin that is attached to the chassis above and below each card slot. When you install or remove a card from the chassis, the card ejector levers hook into the pillow blocks above and below the card slot to secure the cards to the slot and allow you to install and remove the cards.

Prerequisites

Before performing this task, you must first open the front cosmetic doors, if installed.

Required Tools and Equipment

You need the following tools and parts to perform this task:

  • ESD-preventive wrist strap
  • Number 2 Phillips screwdriver or number 2 common (flat head) screwdriver
  • Pillow block replacement kit—Cisco product number: CRS-PILLBLK=

The following items are included in the CRS-PILLBLK= pillow block replacement kit:

  • 2 replacement pillow blocks
  • 6 Torx-head screws
  • 1 T10 Torx screwdriver (See item 1 in Figure 7-1.)

Steps

To replace a damaged pillow block, perform the following steps:


Step 1 Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets: on the front (PLIM) side of the chassis there is one ESD connection socket right above the fan controllers. On the rear (MSC) side of the chassis there are two ESD connection sockets right above the cable management tray in the center of the chassis (left and right). You can also connect the ESD-preventive wrist strap leash to any bare metal surface on the chassis.

Step 2 Locate the pillow block to be replaced. Use the T10 Torx screwdriver to remove the lower right screw. (See item number 2 in Figure 7-1.)

Figure 7-1 Pillow Block

 

 

1

T10 Torx screwdriver

3

Lower left screw

2

Lower right screw

4

Top left screw

Step 3 Remove the lower left screw (located below the pillow block pin). (See item number 3 in Figure 7-1.)

Step 4 Remove the top left screw (located above the pillow block pin). (See item number 4 in Figure 7-1.)

Step 5 Remove the pillow block and set it aside.

Step 6 Repeat this procedure for the card slot’s other pillow block if necessary.

Step 7 Have the replacement pillow block and T10 Torx-head screws near at hand.

Step 8 Position the replacement pillow block and align the screw holes.

Step 9 Use the T10 Torx screwdriver to install the top left screw (located above the pillow block pin). (See item number 4 in Figure 7-1.)

Step 10 Install the lower right screw (see item number 2in Figure 7-1).

Step 11 Install the lower left screw (located below the pillow block pin). (See item number 3 in Figure 7-1.)

Step 12 Repeat this procedure for the card slot’s other pillow block if necessary.


 

What to Do Next

After performing this task, close the front cosmetic doors, if installed.

Removing a Switch Fabric Card

This section describes how to remove a switch fabric card (SFC) from the Cisco CRS Series Enhanced 16-Slot Line Card Chassis. For more detailed information on the different types of switch fabric cards available and details on the cards themselves, see Cisco CRS Series Enhanced 16-Slot Line Card Chassis System Description.


Note Some switch fabric cards (SFCs) contain Class 1 lasers, while others contain Class 1M lasers; for details on the specifics of your card, see Cisco CRS Series Enhanced 16-Slot Line Card Chassis System Description.



Warning Class 1 Laser Product. Statement 113



Warning Because invisible radiation may be emitted from the aperture of the port when no fiber cable is connected, avoid exposure to radiation and do not stare into open apertures. Statement 125



Caution Class 1M laser radiation when open. Do not view directly with optical instruments. Statement 281


Warning For diverging beams, viewing the laser output with certain optical instruments within a distance of 100 mm may pose an eye hazard. For collimated beams, viewing the laser output with certain optical instruments designed for use at a distance may pose an eye hazard. Statement 282



Warning Laser radiation. Do not view directly with optical instruments. Class 1M laser product. Statement 283


Figure 7-2 shows an example of a switch fabric card (in this case, an FQ123-140G SFC).

Figure 7-2 FQ123 -140G Switch Fabric Card

 

Prerequisites

Before performing this task, open the front (PLIM) side cosmetic doors, if installed.

Required Tools and Equipment

You need the following tools to perform this task:

  • ESD-preventive wrist strap
  • Number 2 Phillips screwdriver or number 2 common (flat head) screwdriver

Steps

To remove a switch fabric card, see Figure 7-3 and perform the following steps:


Note In the switch fabric card removal figure, Figure 7-3 below, an Impedance Carrier is shown. Refer to Figure 7-2 for an example of the actual switch fabric card.


Figure 7-3 Removing a Switch Fabric Card

 

 

1

Captive screw

3

Direction of installation or removal

2

Ejector lever


Step 1 Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets: on the front (PLIM) side of the chassis there is one ESD connection socket right above the fan controllers. On the rear (MSC) side of the chassis there are two ESD connection sockets right above the cable management tray in the center of the chassis (left and right). You can also connect the ESD-preventive wrist strap leash to any bare metal surface on the chassis.

Step 2 Identify the switch fabric card to be removed from the card cage. Use the number 2 Phillips screwdriver or number 2 common (flat head) screwdriver to turn the two captive screws on the front panel of the card counterclockwise to loosen it from the slot.

Step 3 Grasp the two card ejector levers and simultaneously pivot both ejector levers 90 degrees (70 degrees for a newer switch fabric card) away from the front edge of the card carrier to unseat the card from the midplane connector.

Step 4 Touching only the metal card carrier, slide the card from the slot and place it directly into an antistatic sack or other ESD-preventive container. If you plan to return the defective card to the factory, repackage it in its original shipping container.


 

What to Do Next

After performing this task, close the front (PLIM) side cosmetic doors, if installed. If you need to install a new switch fabric card, see the “Installing a Switch Fabric Card” section.

Removing an MSC, FP, or LSP Line Card

This section describes how to remove a line card from the Cisco CRS Series Enhanced 16-Slot Line Card Chassis. For more detailed information on the line cards, see Cisco CRS Series Enhanced 16-Slot Line Card Chassis System Description.

Prerequisites

Before performing this task, open the cosmetic doors, if installed.


Caution Do not use the faceplate bracket to pull a line card from the slot; you could cause serious damage to the line card.


Caution Remove or install only one modular services card at a time. Allow at least 15 seconds for the router to complete the preceding tasks before removing or installing another modular services card. The router may indicate a hardware failure if you do not follow proper procedures.

Required Tools and Equipment

You need the following tools and part to perform this task:

  • ESD-preventive strap
  • Number 2 Phillips screwdriver or number 2 common (flat head) screwdriver
  • MSC Impedance carrier (Cisco product number: CRS-MSC-IMPEDANCE=)

Steps

To remove a line card, see Figure 7-4 and perform the following steps:


Note In the card removal figure, Figure 7-4 below, an Impedance Carrier is shown. Refer to Figure 6-21 for an example of an actual Modular Service Card (MSCs).


Figure 7-4 Removing a Modular Services Card

 

 

1

Captive screw

3

Direction of installation or removal

2

Ejector lever


Step 1 Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets: on the front (PLIM) side of the chassis there is one ESD connection socket right above the fan controllers. On the rear (MSC) side of the chassis there are two ESD connection sockets right above the cable management tray in the center of the chassis (left and right). You can also connect the ESD-preventive wrist strap leash to any bare metal surface on the chassis.

Step 2 Use a number 2 Phillips screwdriver or number 2 common (flat head) screwdriver to loosen the captive screw next to each line card ejector lever.


Caution To prevent ESD damage, handle a line card by its ejector levers or the line card carrier edges only. Do not touch any of the electrical components, pins, or circuitry.

Step 3 Simultaneously pivot the ejector levers away from the faceplate to release the line card from the midplane connectors.

Step 4 Grasp the ejector levers with both hands and gently pull the line card halfway from the slot. Do not use the bracket to pull the line card from the slot.

Step 5 Move one hand under the line card to guide it. Avoid touching the line card printed circuit board, components, or any connector pins.

Step 6 Place the removed line card on an antistatic mat, or immediately place it in an antistatic bag if you plan to return it to the factory.

Step 7 If the line card slot is to remain empty, install an MSC impedance carrier to keep dust out of the chassis and to maintain proper airflow through the line card compartment.

Step 8 Use a number 2 Phillips screwdriver or number 2 common (flat head) screwdriver to tighten the captive screws next to each impedance carrier ejector lever to ensure proper EMI shielding and maintain proper airflow throughout the chassis.


 

What to Do Next

After performing this task, close the rear (MSC) side cosmetic doors, if installed. If you need to install a new MSC, FP, or LSP Line Card, see the “Installing an MSC, FP, or LSP Line Card” section.

Removing a Fan Controller Card

This section describes how to remove a fan controller card from the Cisco CRS Series Enhanced 16-Slot Line Card Chassis. For more detailed information on the Cisco CRS Series Enhanced 16-Slot Line Card Chassis fan controller card, see Cisco CRS Series Enhanced 16-Slot Line Card Chassis System Description.

Two Cisco CRS Series Enhanced 16-Slot Line Card Chassis fan controller cards, shown in Figure 6-15, exist in every Cisco CRS Series Enhanced 16-Slot Line Card Chassis.

Prerequisites

Before performing this task, open the front (PLIM) side cosmetic doors, if installed.

Required Tools and Equipment

You need the following tools to perform this task:

  • ESD-preventive wrist strap
  • Number 2 Phillips screwdriver or number 2 common (flat head) screwdriver

Steps

To remove a Cisco CRS Series Enhanced 16-Slot Line Card Chassis fan controller card, see Figure 7-5 and perform the following steps:


Note In the card removal figure, Figure 7-5 below, an Impedance Carrier is shown. Refer to Figure 6-15 for an example of the actual Cisco CRS Series Enhanced 16-Slot Line Card Chassis fan controller card.


Figure 7-5 Removing a Cisco CRS Series Enhanced 16-Slot Line Card Chassis Fan Controller Card

 

 

1

Captive screw

3

Direction of installation or removal

2

Ejector lever


Step 1 Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets: on the front (PLIM) side of the chassis there is one ESD connection socket right above the fan controllers. On the rear (MSC) side of the chassis there are two ESD connection sockets right above the cable management tray in the center of the chassis (left and right). You can also connect the ESD-preventive wrist strap leash to any bare metal surface on the chassis.

Step 2 Identify the Cisco CRS Series Enhanced 16-Slot Line Card Chassis fan controller card to be removed from the card cage. Use the number 2 Phillips screwdriver or number 2 common (flat head) screwdriver to turn the two captive screws on the front panel of the card counterclockwise to loosen it from the slot.

Step 3 Grasp the two card ejector levers and simultaneously pivot both ejector levers 90 degrees (70 degrees for a new Cisco CRS Series Enhanced 16-Slot Line Card Chassis fan controller card) away from the front edge of the card carrier to unseat the card from the midplane connector.

Step 4 Touching only the metal card carrier, slide the card from the slot and place it directly into an antistatic sack or other ESD-preventive container. If you plan to return the defective card to the factory, repackage it in its original packaging.


 

What to Do Next

After performing this task, close the front (PLIM) side cosmetic doors. If you need to install a new fan controller card, see the “Installing a Cisco CRS Series Enhanced 16-Slot Line Card Chassis Fan Controller Card” section.

Removing an RP, PRP, or DRP Card

This section describes how to remove a route processor (RP), performance route processor (PRP), or distributed route processor (DRP) card from the Cisco CRS Series Enhanced 16-Slot Line Card Chassis. For more detailed information on the route processor card, see the “Installing an RP, PRP, or DRP Card” section or Cisco CRS Series Enhanced 16-Slot Line Card Chassis System Description.

Every Cisco CRS Series Enhanced 16-Slot Line Card Chassis contains two route processor cards in dedicated slots on the PLIM side of the chassis (see Figure 6-12).


Warning Class 1 Laser Product. Statement 113



Warning Because invisible radiation may be emitted from the aperture of the port when no fiber cable is connected, avoid exposure to radiation and do not stare into open apertures. Statement 125


Prerequisites

Because chassis operation may be impacted by the removal of an RP or PRP card, perform these tasks only if one of the following conditions exists:

  • When you are certain that the RP card in the chassis is operational and, if not already the Active RP, ready to assume control (this happens automatically)
  • When the chassis is undergoing scheduled maintenance
  • When the Cisco CRS Series Enhanced 16-Slot Line Card Chassis is powered down

Failure to follow these guidelines can result in interruptions in data communications and network connectivity.

Before performing this task, open the cosmetic doors (if installed).

Required Tools and Equipment

You need the following tools to perform this task:

  • ESD-preventive wrist strap
  • Number 2 Phillips screwdriver or number 2 common (flat head) screwdriver

Steps

To remove an RP, PRP, or DRP card, perform the following steps:


Step 1 Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets: on the front (PLIM) side of the chassis there is one ESD connection socket right above the fan controllers. On the rear (MSC) side of the chassis there are two ESD connection sockets right above the cable management tray in the center of the chassis (left and right). You can also connect the ESD-preventive wrist strap leash to any bare metal surface on the chassis.

Step 2 Identify the card to be removed from the card cage. Remove any cables connected to the front panel of the card.

Step 3 PRP cards only—Before removing a PRP card, you must first push the OIR button (using a pointed object such as a pen), which causes the blue OIR Ready LED to start blinking. When the board is ready for removal, the blue LED glows solidly.

Step 4 Use the number 2 Phillips screwdriver or number 2 common (flat head) screwdriver to turn the two captive screws on the front panel of the card counterclockwise to loosen the card from the slot.

Step 5 Grasp the two card ejector levers and simultaneously pivot both ejector levers 90 degrees away from the front edge of the card carrier to unseat the card from the backplane connector.

Step 6 Touching only the metal card carrier, slide the card from the slot and place it directly into an antistatic sack or other ESD-preventive container. If you plan to return the defective card to the factory, repackage it in the shipping container you received with the replacement card.


 

What to Do Next

After performing this task, close the front (PLIM) side cosmetic doors (if installed). If you need to install a new RP, DRP, or PRP card, see the “Installing an RP, PRP, or DRP Card” section.

Removing a PLIM

This section describes how to remove a PLIM from the Cisco CRS Series Enhanced 16-Slot Line Card Chassis.


Note Some PLIMs contain Class 1 lasers, while others contain Class 1M lasers; for details of your PLIM, see Cisco CRS Series Enhanced 16-Slot Line Card Chassis System Description.



Warning Class 1 Laser Product. Statement 113



Warning Because invisible radiation may be emitted from the aperture of the port when no fiber cable is connected, avoid exposure to radiation and do not stare into open apertures. Statement 125



Caution Class 1M laser radiation when open. Do not view directly with optical instruments. Statement 281


Warning For diverging beams, viewing the laser output with certain optical instruments within a distance of 100 mm may pose an eye hazard. For collimated beams, viewing the laser output with certain optical instruments designed for use at a distance may pose an eye hazard. Statement 282



Warning Laser radiation. Do not view directly with optical instruments. Class 1M laser product. Statement 283



Caution The following warning applies to removing very-short-reach (VSR) PLIMs: The router may indicate a hardware failure if you do not follow proper procedures. Remove or install only one PLIM at a time. Allow at least 15 seconds for the router to complete the preceding tasks before removing or installing another PLIM.

Prerequisites

Before performing this task, open the front (PLIM) side cosmetic doors (if installed).


Caution The system can indicate a hardware failure if you do not follow proper procedures. Remove or install only one PLIM at a time. Allow at least 15 seconds for the system to complete the preceding tasks before removing or installing another PLIM.


Note We strongly recommend that you use the Cisco IOS XR shutdown command before removing a PLIM to prevent anomalies when you reinstall a new or reconfigured PLIM.


Required Tools and Equipment

You need the following tools to perform this task:

  • ESD-preventive wrist strap
  • Number 2 Phillips screwdriver or number 2 common (flat head) screwdriver

Steps

To remove a PLIM, see Figure 7-6 and perform the following steps:


Note In the PLIM removal figure, Figure 7-6 below, an Impedance Carrier is shown. Refer to Figure 6-25 for an example of an actual PLIM faceplate.


Figure 7-6 Removing a PLIM

 

 

1

Captive screw

3

Direction of installation or removal

2

Ejector lever


Step 1 Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets: on the front (PLIM) side of the chassis there is one ESD connection socket right above the fan controllers. On the rear (MSC) side of the chassis there are two ESD connection sockets right above the cable management tray in the center of the chassis (left and right). You can also connect the ESD-preventive wrist strap leash to any bare metal surface on the chassis.

Step 2 Identify the card to be replaced.

Step 3 Use the number 2 Phillips screwdriver or number 2 common (flat head) screwdriver to loosen the two captive screws holding the card in place.

Step 4 Grasp the two card ejector levers and simultaneously pivot both ejector levers 90 degrees (70 degrees for a newer PLIM) away from the front edge of the card carrier to unseat the card from the backplane connector.

Step 5 Touching only the metal card carrier, slide the card from the slot and place it directly into an antistatic sack or other ESD-preventive container.


 


Warning Because invisible laser radiation may be emitted from the aperture of the port when no cable is connected, avoid exposure to laser radiation and do not stare into open apertures. Statement 70


Some PLIMs contain Class 1 lasers and some contain Class 1M. See the documentation for the specific PLIM for details.

What to Do Next

After performing this task, close the front (PLIM) side cosmetic doors (if installed). If you need to install a new PLIM, see the “Installing a PLIM” section.

Removing a Hard Drive

This section describes how to remove a hard drive from an RP or a DRP PLIM. Hard drives are available as an option on both the RP and DRP PLIM and are removed in the same manner. For more detailed information on the hard drives, see the “About Hard Drives and PCMCIA Cards” section, or Cisco CRS Series Enhanced 16-Slot Line Card Chassis System Description . Figure 6-28 shows the hard drive door location on the RP card. (The hard drive for the DRP PLIM is in a similar location.)

Prerequisites

The hard disk should be powered down prior to removal. This reduces the chances of data corruption. To power down the hard disk prior to removal, use the proc mandatory off hd_drv and proc shutdown hd_drv commands.

Before performing this task, open the front (PLIM) side cosmetic doors (if installed).

Required Tools and Equipment

You need the following tools to perform this task:

  • ESD-preventive strap
  • Number 2 Phillips screwdriver or number 2 common (flat head) screwdriver

Steps

To remove the hard drive, perform the following steps:


Step 1 Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets: on the front (PLIM) side of the chassis there is one ESD connection socket right above the fan controllers. On the rear (MSC) side of the chassis there are two ESD connection sockets right above the cable management tray in the center of the chassis (left and right). You can also connect the ESD-preventive wrist strap leash to any bare metal surface on the chassis.

Step 2 Use the number 2 Phillips screwdriver or number 2 common (flat head) screwdriver to loosen the captive screws at the left and right of the hard drive door on the faceplate of the card. If needed, use a number 2 Phillips screwdriver or number 2 common (flat head) screwdriver on the captive screws.

Step 3 Remove the hard drive door and set it carefully aside.

Step 4 Press the release button to unseat the hard drive sled from the card.

Step 5 Carefully pull the hard drive sled from the card.

Step 6 Place the removed hard drive on an antistatic mat, or immediately place it in an antistatic bag if you plan to return it to the factory.

Step 7 If the hard drive slot is to remain empty, replace the door to keep dust out, and tighten the captive screws.


 

What to Do Next

Close the front (PLIM) side cosmetic doors (if installed). If you need to install a new hard drive, see the “Installing a Card-Based Hard Drive” section.

Removing an RP PCMCIA Card

This section describes how to install a PCMCIA card in an RP or a DRP card PCMCIA slot. For more detailed information on PCMCIA cards, see the “About Hard Drives and PCMCIA Cards” section, or Cisco CRS Series Enhanced 16-Slot Line Card Chassis System Description. Figure 6-29 shows you the location of the PCMCIA door in the RP card faceplate. (The PCMCIA cards for the DRP are in a similar location.)

Prerequisites

Before performing this task, open the front (PLIM) side cosmetic doors (if installed).

Required Tools and Equipment

You need the following tools to perform this task:

  • ESD-preventive strap
  • Number 2 Phillips screwdriver or number 2 common (flat head) screwdriver

Steps

To remove the PCMCIA card, perform the following steps:


Step 1 Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets: on the front (PLIM) side of the chassis there is one ESD connection socket right above the fan controllers. On the rear (MSC) side of the chassis there are two ESD connection sockets right above the cable management tray in the center of the chassis (left and right). You can also connect the ESD-preventive wrist strap leash to any bare metal surface on the chassis.

Step 2 Using the number 2 Phillips screwdriver or number 2 common (flat head) screwdriver, loosen the captive screw at the bottom of the PCMCIA slot door on the faceplate of the card.

Step 3 While lifting the hinged PCMCIA slot door up, press the release button for the card slot to disengage the card from the card, and then carefully pull out the far left removable PCMCIA flash card.

Step 4 Place the removed PCMCIA card on an antistatic mat, or immediately place it in an antistatic bag if you plan to return it to the factory.

Step 5 If the PCMCIA card slot is to remain empty, close the door to keep dust out, and tighten the captive screw with the number 2 Phillips screwdriver or number 2 common (flat head) screwdriver. Otherwise, install the new PCMCIA card.


 

What to Do Next

Close the front (PLIM) side cosmetic doors (if installed). If you intend to install a new PCMCIA card, see the “Installing a PCMCIA Card” section.

Removing Optical Modules

Refer to the Cisco CRS Carrier Routing System Ethernet Physical Layer Interface Module Installation Note for information on how to install or remove SFP, XFP, and other modules for your PLIM.


Warning Because invisible laser radiation may be emitted from the aperture of the port when no cable is connected, avoid exposure to laser radiation and do not stare into open apertures. Statement 70



Note After removing a PLIM, be sure to replace any front (PLIM) side cover plates.


Removing a Cable Management Bracket

This section describes how to remove a cable management bracket in the Cisco CRS Series Enhanced 16-Slot Line Card Chassis.

The horizontal cable management brackets provide cable management capabilities for the MSCs and PLIMs on the Cisco CRS Series Enhanced 16-Slot Line Card Chassis. Figure 7-7 shows a midchassis cable management bracket. The installed on the front (PLIM) side of the chassis.

Figure 7-7 Cable Management Bracket

 

Prerequisites

The cable management bracket arrives pre-installed on the chassis. Before performing this task, open the cosmetic doors (if installed) and remove any cables from the bracket.

Required Tools and Equipment

You need the following tools to perform this task:

  • ESD-preventive wrist strap
  • Number 2 Phillips screwdriver or number 2 common (flat head) screwdriver

Steps

To remove a cable management bracket, perform the following steps:


Step 1 Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets: on the front (PLIM) side of the chassis there is one ESD connection socket right above the fan controllers. On the rear (MSC) side of the chassis there are two ESD connection sockets right above the cable management tray in the center of the chassis (left and right). You can also connect the ESD-preventive wrist strap leash to any bare metal surface on the chassis.

Step 2 Use the number 2 Phillips screwdriver or number 2 common (flat head) screwdriver to loosen and remove the four screws holding the bracket to the chassis.

Step 3 Set the bracket carefully aside.


 

What to Do Next

You may now install a replacement cable management bracket, if necessary. See the “Installing a Cable Management Bracket” section for more information. Close the cosmetic doors (if installed) after replacing the cable management bracket.

Removing the Rear (MSC) Side Cosmetic Components

This section describes how to remove the rear (MSC) side exterior cosmetic components from the chassis. This section includes all the steps you need to remove all cosmetic parts from the chassis.

This section contains the following procedures:

If you are not using the vertical cable troughs, see the “Removing the Upper Rear Air Grille and Rear Kick Plate if Vertical Troughs Are Not Used” section.


Note While it is possible to remove most of the rear cosmetic parts on the fabric chassis separately, some parts (such as a vertical cable trough) require that other parts be removed first.


Prerequisites

Ensure that you have all the original packaging material for the cosmetic components available.

Required Tools and Equipment

You need the following tool to perform this task:

  • 8-in. number 1 Phillips screwdriver—magnetic head preferable

Steps

To remove the rear (MSC) side cosmetic components, perform the following steps:

Removing the Rear Doors


Step 1 Remove the screws from the doors. There are four M4 x 10 screws on each side for the metal sections of the doors and six M4 x 8 screws on each side for the plexiglass section of the door.


Note To ensure that the door is well supported during removal, remove the screws in the upper and lower metal sections last.


Figure 7-8 Removing the Rear (MSC) Side Exterior Doors

 

Step 2 Lift the doors and set them carefully aside. See Figure 7-8.


Caution The doors scratch easily, so they should be handled with care.


 

Removing the Upper Rear Air Grille

Follow these steps if you are using the vertical troughs. To remove the upper rear air grille if the vertical troughs are not used, see the “Removing the Upper Rear Air Grille and Rear Kick Plate if Vertical Troughs Are Not Used” section.

Step 3 Release the upper rear air grille from the ball stud retainers.

Step 4 Carefully unhook the hanger brackets from the top of the vertical cable troughs (see Figure 7-9).

Figure 7-9 Removing the Upper Rear Air Grille

 

 


 

Removing the Rear Kick Plate

Follow these steps if you are using the vertical troughs. To remove the rear kick plate if the vertical troughs are not used, see the “Removing the Upper Rear Air Grille and Rear Kick Plate if Vertical Troughs Are Not Used” section.

Step 5 Release the kick plate from the ball stud retainers.

Step 6 Carefully remove the rear kick plate form the tabs on the bottom (see Figure 7-10).

Figure 7-10 Removing the Rear Kick Plate

 

 

1

Rear kick plate


 

Removing the Rear Vertical Cable Troughs

Step 7 Remove the rear vertical cable troughs—one left and one right—from the rear of the chassis (see Figure 7-11).

a. Unscrew the ten M4x14-mm pan head screws (five on each side) that attach it to the chassis. (You might need to use a ladder to reach the upper screws.)

b. Slide the cable troughs upward slightly to unhook them from the guide slots; lift them away from the chassis, and set them carefully aside.


Note We recommend that you use two people to remove the troughs, one person to hold the troughs in place while the other person removes the screws.


Figure 7-11 Removing the Rear (MSC) Side Vertical Cable Troughs

 


 

Removing the Exhaust Air Deflector

See Removing the Exhaust Air Deflector.

Removing the Upper Rear Air Grille and Rear Kick Plate if Vertical Troughs Are Not Used

If you are using the vertical troughs, see the “Removing the Rear (MSC) Side Cosmetic Components” section.


Note Because the upper rear air grille is installed at the top of the chassis, it is easier to stand on a ladder while removing it.



Step 1 To remove the upper rear air grille, unhook it from the brackets and slide upward to release (see Figure 7-12).

Figure 7-12 Removing the Upper Rear Air Grille

 

 

1

Upper rear air grille


 

Removing the Rear Kick Plate

Step 2 To remove the rear kick plate, unsnap it from the tabs near the bottom of the chassis (see Figure 7-13).

Figure 7-13 Removing the Rear Kick Plate

 

 

1

Rear kick plate

Step 3 To remove the brackets installed with the kick plate, loosen the captive screws that attach the bracket to the chassis (see Figure 7-14).

Figure 7-14 Removing Brackets for the Lower Rear Kick Plate

 

 

1

Brackets for rear kick plate


 

What to Do Next

Be sure that all parts have been carefully set aside and repackaged appropriately.

Removing the Front (PLIM) Side Cosmetic Components

This section describes how to remove exterior cosmetic components from the front (PLIM) side of the chassis. This section includes all the steps you need to remove all the cosmetic parts from the chassis. To remove a particular part, see the appropriate step or steps in the procedure that follows.


Note While it is possible to remove most of the cosmetic parts on the Cisco CRS Series Enhanced 16-slot Line Card Chassis separately, some parts (such as a unistrut) require that other parts be removed first.


This section describes how to perform the following tasks:

 

Prerequisites

Ensure that you have all the original packaging material for the cosmetic components available.

Required Tools and Equipment

You need the following tools to perform this task:

  • 8-in. long number 1 Phillips screwdriver—magnetic head preferable, bit size number 1
  • 13-mm socket
  • 2-mm hex key wrench (for door set screws)
  • T8 Torx wrench (for removing upper grille support)

Steps

To remove the front (PLIM) side external cosmetic components, perform the following steps:

Removing the Front Doors


Step 1 Remove the screws from the doors. There are five M4 x 10 screws on each side for the metal sections of the doors and six M4 x 8 screws on each side for the plexiglass section of the door.


Note To ensure that the door is well supported during removal, remove the screws in the upper and lower metal sections last.


Step 2 Lift the doors and set them carefully aside. See Figure 7-15.


Caution The doors scratch easily, so they should be handled with care.

Figure 7-15 Removing the Front Doors

 


 

Removing the Front Lower Grille

Step 3 Remove the front lower grille (see Figure 7-16) by unsnapping the top portion from the ball stud snaps on the grille frame.

Step 4 Rotate the grille towards you on its brackets, and then lift it clear of the support, and set it carefully aside.

Figure 7-16 Removing the Front Lower Grille

 


 

Removing the Front Upper Grille

Step 5 Remove the upper grille (see Figure 7-17) by unsnapping the bottom portion from the ball stud snaps on the chassis.

Step 6 Rotate the grille towards you on its hook hanger brackets, then lift it clear of the support, and set it carefully aside.

Figure 7-17 Removing the Front Upper Grille

 


 

Removing the Default Front Vertical Cable Troughs

Step 7 Remove the default vertical cable troughs (see Figure 7-18)—one right and one left—from the front (PLIM) side of the chassis:

a. Use the screwdriver to turn the twelve M4x14-mm flat head screws (six on each side) counterclockwise, remove them from the cable troughs, and set them aside.

b. Slide the cable troughs upward slightly to unhook them from the guide slots; lift them away from the chassis, and set them aside.


Note We recommend that you use two people to remove the troughs, one person to hold the troughs while the other person removes the screws.


Figure 7-18 Removing Default Vertical Cable Troughs from Chassis

 


 

Removing the Optional Wide Front Vertical Cable Troughs

Step 8 Remove the wide vertical cable troughs—one right and one left—from the front (PLIM) side of the chassis:

a. Use the screwdriver to remove the six M8 screws that attach the three brackets (two screws on each bracket) on each trough to the side of the chassis. Set the screws aside. See Figure 7-19.

Figure 7-19 Removing Screws that Attach Wide Vertical Cable Trough Brackets to Side of Chassis

 

b. Use the screwdriver to turn the ten M4x14-mm flat head screws (five on each side) that attach the cable trough to the front of the chassis counterclockwise. Remove the screws from the cable troughs, and set them aside. See Figure 7-20.

Figure 7-20 Removing Wide Vertical Troughs from Chassis

 

c. Slide the cable troughs upward slightly to unhook them from the guide slots; lift them away from the chassis, and set them aside.


Note We recommend that you use two people to remove the troughs, one person to hold the troughs while the other person removes the screws.



 

Removing the Unistruts

Step 9 Use the 13-mm socket and ratchet wrench to remove the four M12 hex head bolts and washers, two on each unistrut, that attach the unistrut to the top of the chassis. See Figure 7-21.

Figure 7-21 Removing the Unistrut

 

 

1

Upper grille support

3

Cutaway for ground cable

2

Unistruts


 

What to Do Next

Be sure that all parts have been carefully set aside and repackaged as appropriate.

Replacing Air Circulation Components

This section provides instructions on how to install and replace the Cisco CRS Series Enhanced 16-Slot Line Card Chassis air circulation components.


Note The chassis is shipped with the fan trays and air filter pre-installed.


This section presents the following topics:

Information About the Air Circulation Components

This section contains some general information about the air circulation components in the following topics:

About the Fan Trays

The Cisco CRS Series Enhanced 16-Slot Line Card Chassis has two fan trays (see Figure 7-22), one just below the lower card cage and the other just above the upper card cage. The chassis can run with only one fan tray operating. If a failure occurs in one fan tray, the other fan tray acts as the redundant fan tray to assure fault-tolerant system performance; the chassis continues to operate while the failed fan tray is replaced.

The Cisco CRS Series Enhanced 16-Slot Line Card Chassis fan tray operates in either the upper or lower fan tray slots. Each fan tray installs into the rear (MSC) side of the chassis and contains:

  • Nine fans
  • Fan tray board
  • Front-panel status LED

Note The upper and lower fan trays are interchangeable and installed in the same manner.


Figure 7-22 Airflow Through the Cisco CRS Series Enhanced 16-Slot Line Card Chassis

 

1

Front (PLIM) side of chassis

6

Power shelves (two installed)

2

Air intake

7

Air exhaust

3

Lower fan tray

8

Upper card cage

4

Air filter

9

Lower card cage

5

Upper fan tray

10

Rear [MSC] side of chassis

About the Air Filter

The chassis has a serviceable air filter mounted in a slide-out tray accessible from the rear of the chassis just below the lower card cage (see Figure 7-22). The air filter removes dust from the room air drawn into the router by the two fan trays. Once a month (or more often in dusty environments) you should examine the air filter and replace it if it appears damaged or excessively dirty.

How to Replace Air Circulation Components

This section contains the following procedures:

Replacing a Fan Tray

This section describes how to replace a fan tray (see Figure 7-23) in the Cisco CRS Series Enhanced 16-Slot Line Card Chassis. For information on the fan tray, see the “Information About the Air Circulation Components” section. For complete information on regulatory compliance and safety, see Regulatory Compliance and Safety Information for the Cisco CRS Carrier Routing System .

Figure 7-23 Fan Tray

 

Prerequisites

Before performing this task, you must first open the chassis doors on the rear (MSC) side of the chassis, if installed. If you are replacing the upper fan tray, you must remove the upper grille from the rear (MSC) side of the chassis. If you are replacing the lower fan tray, you must remove the rear kick plate from the rear (MSC) side of the chassis.

Required Tools and Equipment

You need the following tools and part to perform this task:

  • ESD-preventive wrist strap
  • 6-in. long number 1 Phillips screwdriver
  • Fan tray—Cisco product number CRS-16-FANTRAY=

Steps

To replace a fan tray, perform the following steps:


Step 1 Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets: on the front (PLIM) side of the chassis there is one ESD connection socket right above the fan controllers. On the rear (MSC) side of the chassis there are two ESD connection sockets right above the cable management tray in the center of the chassis (left and right). You can also connect the ESD-preventive wrist strap leash to any bare metal surface on the chassis.

Step 2 Using the screwdriver, loosen the two captive screws on the fan tray faceplate. If necessary, use a step platform to reach the upper fan tray comfortably.

Figure 7-24 Unscrewing the Screws in the Fan Tray Faceplate

 

Step 3 Pull firmly on the two handles to pull it free; two people are required to remove the fan tray.


Caution Because of the weight of the fan tray, approximately 37.5 lb. (17 kg), two people are required to remove the fan tray. You should be especially careful while removing the fan tray from the chassis. To prevent injury, keep your back straight and lift with your legs, not your back. Avoid sudden twists or lateral moves. It is safer to use two people to remove the fan tray rather than a single person.

Step 4 Grasp the fan tray handles and pull it straight out to disconnect the fan tray from the connector mounted on the front of the fan tray bay on the rear (MSC) side of the chassis. Slide the fan tray halfway from the fan tray bay.

Step 5 Use your free hands to support the fan tray, then slide the fan tray completely from the fan tray bay.

Step 6 Set the fan tray carefully aside.

Step 7 To install the replacement fan tray using two hands to support it, position the fan tray in front of the fan tray bay (label is on top).


Caution Because of the weight of the fan tray, approximately 37.5 lb. (17 kg), two people are required to replace the fan tray. You should be especially careful while replacing the fan tray into the chassis. To prevent injury, keep your back straight and lift with your legs, not your back. Avoid sudden twists or lateral moves. It is safer to use two people to support the fan tray while replacing it in the fan tray bay rather than a single person.

Step 8 Slide the fan tray into the fan tray bay. Stop when the fan tray makes contact with the chassis connector in the back of the fan tray bay.


Caution To prevent damage to the chassis connector, do not use excessive force when inserting a fan tray into its bay.

Step 9 Firmly push on the fan tray handles to seat the fan tray connector in the chassis connector. When completely seated, the fan tray faceplate flanges meet the rear (MSC) side of the chassis.


Note All electrical and control line connections are made automatically when the connectors mate. The Fan LED will light when the fan tray is inserted.


Step 10 Tighten the two captive screws on the fan tray faceplate.


 

What to Do Next

After performing this task, close the doors (if installed) and re-install the upper grille or rear kick plate on the rear (MSC) side of the chassis, as necessary. For more information, see the “Installing the Rear (MSC) Side Cosmetic Components” section.

Replacing the Air Filter

This section describes how to replace the air filter in the Cisco CRS Series Enhanced 16-Slot Line Card Chassis. For further information, see the “Information About the Air Circulation Components” section. For complete information on regulatory compliance and safety, see Regulatory Compliance and Safety Information for the Cisco CRS Carrier Routing System .

Figure 7-25 Air Filter

 


Note A lattice of wire exists on both sides of the filter material with an arrow denoting airflow direction and a pair of sheet metal straps on the downstream side of the filter assembly.


Prerequisites

Before performing this task, you must first open the doors and remove the lower grille on the Rear (MSC) side of the chassis. See the “Removing the Rear (MSC) Side Cosmetic Components” section for more information.


Caution Never operate the Cisco CRS Series Enhanced 16-Slot Line Card Chassis without an air filter. Operating a Cisco CRS Series Enhanced 16-Slot Line Card Chassis without a filter or leaving an air filter cover off for an extended time can result in damage to the hardware.

Required Tools and Equipment

You need the following tools and part to perform this task:

  • ESD-preventive wrist strap
  • 6-in. long number 1 Phillips screwdriver
  • Air filter—Cisco product number CRS-16-FILTER=

Steps

To replace the air filter, perform the following steps:


Step 1 Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets on the front (PLIM) side of the chassis or a bare metal surface on the chassis.

Step 2 Using the screwdriver, loosen the two captive screws on the filter cover faceplate. Pull firmly on the cover to swing it free; some force may be required.

Step 3 Insert the new air filter on top of the existing (old) air filter and push the new air filter into the air filter slot until it is seated fully within the slot.

Step 4 Grasp the tabs at the front of the existing (old) air filter beneath the new air filter and carefully slide it from the slot.

Step 5 Set this old air filter carefully aside.

Step 6 Replace the filter cover and tighten the two captive screws on the front.


 

What to Do Next

After performing this task, re-install the lower grille and close the doors on the Rear (MSC) side of the chassis. For more information, see the “Installing the Rear (MSC) Side Cosmetic Components” section.

Removing Power Components

This section describes how to remove power components from the Cisco CRS enhanced 16-slot line card chassis.


Note Although there are differences between the different types of power shelves and PMs (AC and DC), they are installed and removed using the same procedures.


While it is possible to remove power components from the Cisco CRS enhanced 16-slot line card chassis separately, some parts (such as the power shelf) require that other parts be removed first.

We recommend that you remove the power components in the order outlined in this section. This section contains the following procedures:

Removing a Power Module Slot Cover

This section describes how to remove a PM slot cover from a PM slot in an AC or DC power shelf. For complete information on regulatory compliance and safety, see Regulatory Compliance and Safety Information for the Cisco CRS Carrier Routing System .

Prerequisites

Before performing this task, you must first remove the upper grille on the front (SFC) side of the chassis, if installed. See the “” section.

Required Tools and Equipment

You need the following tools to perform this task:

  • ESD-preventive wrist strap

Steps

To remove a PM slot cover from a power shelf, perform the following steps:


Step 1 Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets: on the front (PLIM) side of the chassis there is one ESD connection socket right above the fan controllers. On the rear (MSC) side of the chassis there are two ESD connection sockets right above the cable management tray in the center of the chassis (left and right). You can also connect the ESD-preventive wrist strap leash to any bare metal surface on the chassis.

Step 2 Gently pinch the tab on the left side of the PM slot cover to detach the PM slot cover from the PM slot. See Figure 7-26.

Step 3 Remove the two tabs on the right side of the PM slot cover from the two holes on the right side of the PM slot. See Figure 7-26.

Step 4 Set the PM slot cover aside.

Figure 7-26 Installing PM Slot Cover

 


 

What to Do Next

After performing this task, install an AC or DC PM, if necessary (see the “Installing a Power Module” section) and re-install the upper grille on the front (SFC) side of the chassis. If you plan to remove the power shelf completely, you must first remove all of the PM slot covers, PMs, and the alarm module from the power shelf. See the “Removing a Power Module” section and the “Removing an Alarm Module” section for more information.

Removing a Power Module

This section describes how to remove a PM from a power shelf. For complete information on regulatory compliance and safety, see Regulatory Compliance and Safety Information for the Cisco CRS Carrier Routing System .

Prerequisites

Before performing this task, you must first remove the upper grille on the front (PLIM) side of the chassis, if installed. See the “” section.

Required Tools and Equipment

You need the following tools to perform this task:

  • ESD-preventive wrist strap
  • 6-in. long number 1 Phillips screwdriver

Steps

To remove a PM from a power shelf, perform the following steps:


Step 1 Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets: on the front (PLIM) side of the chassis there is one ESD connection socket right above the fan controllers. On the rear (MSC) side of the chassis there are two ESD connection sockets right above the cable management tray in the center of the chassis (left and right). You can also connect the ESD-preventive wrist strap leash to any bare metal surface on the chassis.

Step 2 Using the screwdriver, unscrew the ejector from the PM. See Figure 7-27.

Figure 7-27 Removing the PM from the Power Shelf

 

Step 3 Flip down the ejector. Slide the PM out of the power shelf, and carefully place it down on a flat surface.


 

What to Do Next

After performing this task, install a replacement AC or DC PM, if necessary (see the “Installing a Power Module” section) and re-install the upper grille on the front (SFC) side of the chassis. If you plan to remove the power shelf completely, you must first remove all of the power modules and the alarm module from the power shelf (see the “Removing an Alarm Module” section).

Removing an Alarm Module

This section describes how to remove an alarm module from a power shelf installed in the Cisco CRS enhanced 16-slot line card chassis. For complete information on regulatory compliance and safety, see Regulatory Compliance and Safety Information for the Cisco CRS Carrier Routing System .

Prerequisites

Before performing this task, you must first remove the upper grille on the front (SFC) side of the chassis, if installed. See the “Removing the Front Upper Grille” section.

Required Tools and Equipment

You need the following tools to perform this task:

  • ESD-preventive wrist strap
  • 6-in. long number 1 Phillips screwdriver

Steps

To remove the alarm module, perform the following steps:


Step 1 Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets: on the front (PLIM) side of the chassis there is one ESD connection socket right above the fan controllers. On the rear (MSC) side of the chassis there are two ESD connection sockets right above the cable management tray in the center of the chassis (left and right). You can also connect the ESD-preventive wrist strap leash to any bare metal surface on the chassis.

Step 2 Use the screwdriver to loosen the captive screw securing the alarm module to the power shelf on the lower right corner of the alarm module.

Step 3 Rotate the alarm module ejector lever downwards to eject the alarm module from the power shelf.

Figure 7-28 Rotating Alarm Module Ejector Downwards to Eject Alarm Module

 

Step 4 Slide the alarm module out of the power shelf, and carefully place it down on a flat surface.


 

What to Do Next

After performing this task, install a replacement alarm module, if necessary, (see the “Installing an Alarm Module” section) and re-install the upper grille on the front (SFC) side of the chassis. If you plan to remove the power shelf completely, remove the AC or DC wiring from the rear of the power shelf (see the “Removing AC or DC Power Shelf Wiring” section). If you plan to remove wiring from the lower power shelf, you will need to remove the exhaust air deflector first (see the “Removing the Exhaust Air Deflector” section).

Removing the Exhaust Air Deflector

This section describes how to remove the exhaust air deflector from the rear of the Cisco CRS enhanced 16-slot line card chassis. For complete information on regulatory compliance and safety, see Regulatory Compliance and Safety Information for the Cisco CRS Carrier Routing System .

The exhaust air deflector must be removed before installing the lower power shelf.

Prerequisites

There are no prerequisites for this task.

Required Tools and Equipment

You need the following tools and equipment to perform this task:

  • 6-in. long number 2 Phillips screwdriver

Steps


Step 1 Unscrew the captive screw on both sides.

Figure 7-29 The Captive Screw

 

Step 2 Rotate the air deflector backward until seated on the lower standoff.

Figure 7-30 Rotating the Air Deflector Backward

 

Step 3 Lift the air deflector off of the lower standoff.


 

What to Do Next

After the exhaust air deflector has been removed from the rear of the chassis, remove the AC or DC wiring from the rear of the power shelf. Continue to “Installing an AC or DC Power Shelf” section for instructions.

Removing AC or DC Power Shelf Wiring

This section describes how to remove the DC input wiring, DC terminal block covers and AC cords from the rear of the power shelf on the Cisco CRS enhanced 16-slot line card chassis. For complete information on regulatory compliance and safety, see Regulatory Compliance and Safety Information for the Cisco CRS Carrier Routing System .

Removing DC Power Shelf Wiring

This section describes how to remove the DC power shelf wiring from the rear of the DC power shelf.

For additional power shelf details, see Cisco CSR-1 Series Carrier Routing System Description or Appendix A, “Cisco CRS Series Carrier Routing System 16-Slot EC Line Card Chassis Specifications.”

Prerequisites

Before performing this task, power down and remove DC PMs and the alarm module in the shelf you want to disconnect. Remove the upper grille from the rear (MSC) side of the chassis, if installed. If you plan to remove power from the lower power shelf, remove the exhaust air deflector from the rear of the chassis first (see the Removing the Exhaust Air Deflector).


Note Before removing wiring from the power shelf, make sure that the input power cables are not energized.


Required Tools and Equipment

You need the following tools to perform this task:

  • ESD-preventive wrist strap
  • 6-in. long number 1 Phillips screwdriver
  • 3/8-in. ratchet wrench with 10-mm socket
  • Volt ohm meter

Steps

To disconnect wiring from the DC power shelf, perform the following steps:


Step 1 Attach the ESD-preventive wrist strap to your wrist and connect its leash to one of the ESD connection sockets: on the front (PLIM) side of the chassis there is one ESD connection socket right above the fan controllers. On the rear (MSC) side of the chassis there are two ESD connection sockets right above the cable management tray in the center of the chassis (left and right). You can also connect the ESD-preventive wrist strap leash to any bare metal surface on the chassis.

Step 2 Verify that the power LEDs on the rear of the power shelf are off for all inputs on the power shelf that is being removed.

Step 3 Using the volt ohm meter, verify that there is no voltage on the cables that are about to be removed.

Step 4 Use the screwdriver to remove the screw that secures the terminal block cover into the mounting standoff.

Step 5 Slide the terminal block cover downwards.

Step 6 Remove the terminal block cover.

Step 7 Using the 10-mm socket wrench, remove the positive and negative cable pairs from each terminal block.


Note When a cable is removed from the rear of the DC power shelf, we recommend that it should be wrapped with standard black electrical tape.


Step 8 Replace the terminal block cover.


 

What To Do Next

After you remove the DC terminal block covers and DC wiring, you can remove the power shelf from the chassis completely. See the “Removing a Power Shelf” section .

Removing AC Power Shelf Wiring

This section describes how to remove input AC cords from the rear of the DC power shelf.

Prerequisites

Before performing this task, power down and remove AC PMs and the alarm module in the shelf you want to disconnect. Remove the upper grille from the rear (MSC) side of the chassis, if installed.


Note Before removing wiring from the power shelf, make sure that the input power cables are not energized.


Required Tools and Equipment

You need the following tools to perform this task:

  • 6-in. long number 1 Phillips screwdriver

Steps

To remove the input AC cords, go to the rear of the chassis and perform the following steps:


Step 1 Verify that the AC input source breaker is in the OFF position.

Step 2 Use the screwdriver to loosen the screws that clamp the cords in place, see Figure 7-31 .

Figure 7-31 Cord Being Removed from Cord Clamp

 

 

1

Screw that secures the cord clamp

2

Cord to be inserted into clamp

Step 3 Remove the cords from the cord clamps.


 

What To Do Next

After you remove the AC cords, you can remove the power shelf from the chassis completely. See the “Removing a Power Shelf” section .

Removing a Power Shelf

This section describes how to remove the power shelf from the Cisco CRS enhanced 16-slot line card chassis. For complete information on regulatory compliance and safety, see Regulatory Compliance and Safety Information for the Cisco CRS Carrier Routing System .

Prerequisites

Before performing this task, remove the upper grilles from the front (PLIM) and rear (MSC) sides of the chassis (if installed), the AC or DC PMs, alarm module, and the AC or DC input power wiring from the shelf that you want to disconnect. For more information, see the “Removing a Power Module” section, the “Removing an Alarm Module” section , and the “Removing AC or DC Power Shelf Wiring” section .

Required Tools and Equipment

You need the following tools to perform this task:

  • 6 in. long number 2 Phillips screwdriver

Caution Do not use the handles for lifting or supporting the power shelf, because this could severely damage the handles.


Caution Do not bend the handles sideways during any part of the removal process.

Steps

To remove a power shelf, perform the following steps:


Step 1 Using the screwdriver, remove the screws that secure the bottom of the power shelves to the chassis. There is one screw on each side of the power shelf. See Figure 7-32.


Note If you are removing both power shelves from the chassis, you can remove the power shelves in any order that you prefer. Ensure that the first power shelf is fully removed from the chassis before attempting to remove the second power shelf.


Step 2 Using the screwdriver, loosen the captive screws on the power shelf handles on the power shelf. Each power shelf handle contains one captive screw. The handles will fall down away from the shelf, as shown in Figure 7-32.

Figure 7-32 Removing Power Shelf from Chassis

 

 

Step 3 Grasping both handles simultaneously, pull both the left and right handles down and out at the same time to pull the shelf partially out of the chassis.

Step 4 When the shelf is partially out of the chassis and the ejector handles are away from the pins, rotate the handles back up to the closed position and hand-tighten the handle screws back into the shelf.

Step 5 Using two people, one to support the power shelf underneath and the other to keep it steady, slide the shelf out of the chassis, and carefully set it down on a flat surface.


Caution Because of the weight of the power shelf, 40 lbs (18 kg), and the height that the power shelf is installed in the chassis, you should be especially careful while lifting and removing the power shelf. To prevent injury, keep your back straight and lift with your legs, not your back. Avoid sudden twists or lateral moves.

Step 6 Remove the second power shelf, if necessary, by following Step 1 through Step 5.


 

What to Do Next

After performing this task, install a replacement power shelf, if necessary, (see the “Installing an AC or DC Power Shelf” section), and replace the upper grille on the front (PLIM) and rear (MSC) sides of the chassis.

Removing the Upper Grille Support

This section describes how to remove the upper grille support from the Cisco CRS enhanced 16-slot line card chassis. For complete information on regulatory compliance and safety, see Regulatory Compliance and Safety Information for the Cisco CRS Carrier Routing System .

Prerequisites

Before performing this task, remove the upper grilles from the front (PLIM) and rear (MSC) sides of the chassis (if installed), the AC or DC PMs, alarm module, and the AC or DC input power wiring, and the power shelves from the chassis. For more information, see the following sections:

Required Tools and Equipment

You need the following tool to perform this task:

  • 6-in. long number 1 Phillips screwdriver

Steps

To remove the upper grille support from the chassis, perform the following steps:


Step 1 Use the screwdriver to remove the six M4 flat head screws, three on each side, that attach the upper grille support to the chassis. See Figure 7-33.

Figure 7-33 Removing the Upper Grille Support from the Chassis

 

Step 2 Remove the upper grille support from the front of the chassis, and set it aside.


 

Removing the Chassis Ground Cable

This section describes how to remove the chassis ground cable on the Cisco CRS enhanced 16-slot line card chassis. For complete information on regulatory compliance and safety, see Regulatory Compliance and Safety Information for the Cisco CRS Carrier Routing System .

Prerequisites

Before performing this task, remove the AC or DC input power wiring from both power shelves, and remove both power shelves from the chassis.


Caution Do not remove the chassis ground cable unless the chassis is being replaced.

Required Tools and Equipment

You need the following tools and equipment to perform this task:

  • 3/8 in. drive socket wrench
  • 10-mm 6 pt. socket wrench

Steps

To remove the ground cable from the chassis, perform the following steps:


Step 1 If the ground cable is connected to the grounding point at the top of the chassis, use the 10-mm wrench to remove the two M6 bolts that attach the ground cable to the grounding point, as shown in Figure 7-34.

Figure 7-34 NEBS Bonding and Grounding Point—Top of Chassis

 

 

1

Two Torx security screws (Do not remove)

Step 2 If the ground cable is connected to the grounding point at the bottom of the chassis, use the 10-mm wrench to remove the two M6 nuts that secure the ground cable to the grounding point, as shown in Figure 7-35.

Figure 7-35 NEBS Bonding and Grounding Point—Bottom of Chassis

 


 

Disconnecting the Power A Bus Bar

This section describes how to disconnect the Power A bus bar from the rear of the Cisco CRS enhanced 16-slot line card chassis.

Prerequisites

Before performing this task, remove all power components, including alarm modules, power modules, DC wiring or AC cables, and both power shelves from the chassis.

Required Tools and Equipment

You need the following tool to perform this task:

  • 6-in. long number 1 Phillips screwdriver
  • Power A bus bar shipping bracket

Steps

To disconnect the Power A bus bar, perform the following steps:


Step 1 Loosen the Phillips captive screw that secures the Power A bus bar to the chassis. The screw is located on the tab on the left side of the power bus bar. See item 1 in Figure 7-36.

Figure 7-36 Power A Bus Bar Installed in Chassis

 

 

1

Screw securing Power A bus bar to chassis

2

Pivot point

3

Two screws securing handle to Power A bus bar

Step 2 Loosen the two captive screws on the Power A bus bar handle.

Step 3 Remove the Power A bus bar from where it is seated.


Note The Power A bus bar is connected to the chassis with an internal cable. Be careful not to drop the power bus bar.


Step 4 Carefully secure the Power A bus bar to the chassis frame in a horizontal position by re-installing the shipping bracket. Tighten the six captive screws that attach the shipping bracket to the rear of the chassis. See Figure 7-37.

Figure 7-37 Installing the Power A Bus Bar Shipping Bracket

 

 

1

Captive screws securing Power A bus bar bracket to chassis rear


 

Converting from One Power System to the Other

This section describes how to convert from one power system to another (either from AC to DC, or from DC to AC). For complete information on regulatory compliance and safety, see Regulatory Compliance and Safety Information for the Cisco CRS Carrier Routing System .

Steps

To convert a Cisco CRS Series Enhanced 16-slot Line Card Chassis with a power system from AC to DC power, or from DC to AC power, perform the following steps:


Step 1 Power down the chassis completely. See the “Power Down a Chassis” section .

Step 2 Remove the AC or DC PMs. See the “Removing a Power Module” section .

Step 3 Remove the alarm modules. See the “Removing an Alarm Module” section .

Step 4 Unplug the AC power cords or remove the DC fusing from the power source. Remove the AC or DC wiring from the rear of the power shelf. See the “Removing AC or DC Power Shelf Wiring” section.

Step 5 Remove the power shelves. See the “Removing a Power Shelf” section .

Step 6 Install the new power shelves. See the “Installing an AC or DC Power Shelf” section .

Step 7 Install the power shelf wiring. See the “Installing AC or DC Power Shelf Wiring” section .


Note If you are converting from DC to AC power, and if you have AC Delta or AC Wye at your equipment, a Cisco CRS PDU will be required to convert 3-phase AC input power to single-phase AC input power for the power shelf. For further information and installation instructions, refer to Cisco CRS 3-Phase AC Power Distribution Unit Installation Guide.


Step 8 Install the alarm modules. See the “Installing an Alarm Module” section .

Step 9 Install the AC or DC PMs. See the “Installing a Power Module” section .

Step 10 Power the chassis back up. See the “Power Up and Power Down a Chassis” section .


 


Note Use only one type of power shelf—AC or DC—and its mating AC or DC PM in a chassis at one time.



 

What to Do Next

Be sure that all parts have been carefully set aside and repackaged appropriately.