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Removing Components from the Chassis Before Installing the M120 Router Without a Mechanical Lift

 

To make the router light enough to install manually, you first remove most components from the chassis. The procedures in this section for removing components from the chassis are for initial installation only, and assume that you have not connected power cables to the router. Remove components from the chassis, first from the rear and then from the front.

Removing the Power Supplies

The power supplies are located vertically at the rear of the chassis to the right of CB1. Each power supply weighs approximately 8.4 lb (3.8 kg).

Remove the left power supply first and then the right power supply. To remove the AC or DC power supplies:

  1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to an approved site ESD grounding point. See the instructions for your site.
  2. Switch the circuit breaker on a DC power supply faceplate to the off position (O). For an AC power supply, switch the power switch to the standby position. We recommend this even though the power supplies are not connected to power sources.
  3. Loosen the captive screw on each flange at the top and bottom of the power supply faceplate completely.
  4. Grasp the handle on the power supply and pull firmly. Slide it halfway out of the chassis (see Figure 1, which shows the removal of DC power supplies).
  5. Place one hand underneath the power supply to support it and slide it completely out of the chassis.Caution

    Each power supply weighs approximately 8.4 lb (3.8 kg). Be prepared to support the full weight of the power supply as you remove it from the router.

  6. Repeat the procedure for the remaining power supply.
Figure 1: Removing a Power Supply Before Installing the M120 Router
Removing a Power
Supply Before Installing the M120 Router

Removing FEBs

Six FEBs are installed in the router. The FEBs are located in the rear of the chassis in the slots marked FEB0 through FEB5. Each FEB weighs approximately 4.5 lb (2.0 kg).

To remove the FEBs (see Figure 2):

  1. Place an electrostatic bag or antistatic mat on a flat, stable surface.
  2. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to an approved site ESD grounding point. See the instructions for your site.
  3. Loosen the captive screws (using a Phillips (+) screwdriver, number 2) on the ejector handles on each side of the FEB faceplate.
  4. Flip the ejector handles outward to unseat the FEB.
  5. Grasp both ejector handles, pull firmly, and slide the FEB about three-quarters of the way out of the chassis.
  6. Place one hand underneath the FEB to support it and slide it completely out of the chassis. Place it on the antistatic mat.Caution

    Do not stack hardware components on one another after you remove them. Place each component on an antistatic mat resting on a stable, flat surface.

  7. Repeat the procedure for each of the remaining FEBs.
Figure 2: Removing a FEB Before Installing the M120 Router
Removing a FEB Before Installing
the M120 Router

Removing CBs

The router can have one or two CBs. They are located in the right rear of the chassis in the slots marked CB0 and CB1. Each CB weighs approximately 6.9 lb (3.1 kg).

To remove the CBs (see Figure 3):

  1. Place an electrostatic bag or antistatic mat on a flat, stable surface.
  2. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to an approved site ESD grounding point. See the instructions for your site.
  3. Loosen the captive screws on the ejector handles on both sides of the CB faceplate.
  4. Simultaneously rotate the ejector handles counterclockwise to unseat the CB.
  5. Grasp the ejector handles and slide the CB about halfway out of the chassis.
  6. Place one hand underneath the CB to support it and slide it completely out of the chassis. Place it on the antistatic mat.Caution

    Do not stack hardware components on one another after you remove them. Place each component on an antistatic mat resting on a stable, flat surface.

  7. Repeat the procedure for the second CB.
Figure 3: Removing a CB Before Installing the M120 Router
Removing a CB Before Installing
the M120 Router

Removing a Fan Tray

In the front of the chassis, the upper fan tray is located above the FPC card cage, and the lower fan tray is located below the FPC card cage. Each fan tray weighs about 7 lb (3.2 kg). In the rear of the chassis, the upper fan tray is located above the rear card cage, and the lower fan tray is located below the rear card cage. Each fan tray weighs about 5.3 lb (2.4 kg).

To remove any fan tray (see Figure 4 and Figure 5, which illustrate the upper front fan tray and lower rear fan tray):

  1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to an approved site ESD grounding point. See the instructions for your site.
  2. If removing the lower front fan tray, simultaneously pull the two releases labeled PULL on the cable management system. Lift it up and outward to lock it in place.
  3. Loosen the captive screw on each side of the fan tray faceplate.
  4. Grasp the handle and pull the fan tray out approximately 1 to 3 inches.Warning

    To avoid injury, keep tools and your fingers away from the fans as you slide the fan tray out of the chassis. The fans might still be spinning.

  5. Pause for approximately 15 seconds to allow the fans to stop spinning.
  6. When the fans stop spinning, place one hand under the fan tray to support it and pull the fan tray completely out of the chassis.
Figure 4: Removing an Upper Front Fan Tray Before Installing the M120 Router
Removing an Upper Front Fan Tray Before Installing the M120 Router
Figure 5: Removing a Lower Rear Fan Tray Before Installing the M120 Router
Removing a Lower Rear Fan Tray Before Installing the M120 Router

Removing the Cable Management System

The cable management system is located below the FPC card cage. The cable management system weighs approximately 5 lb (2.3 kg).

To remove the cable management system (see Figure 6):

  1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to an approved site ESD grounding point. See the instructions for your site.
  2. Using a 3/8-in. nut driver, unscrew the nuts on the corners of the cable management system.
  3. Grasp the bottom of the cable management system and pull it straight out from the studs on the front of the chassis.
Figure 6: Removing the Cable Management System Before Installing the M120 Router
Removing the Cable Management
System Before Installing the M120 Router

Removing FPCs

The router holds up to four FPCs, which are installed vertically in the front of the router. An empty FPC weighs 9.0 lb (4.0 kg). A fully configured FPC can weigh up to 12.3 lb (5.6 kg).

Each FPC slot not occupied by an FPC must be covered by an FPC blank panel. An FPC blank panel weighs 7.7 lb (3.5 kg).

To remove an FPC (see Figure 7):

  1. Place an electrostatic bag or antistatic mat on a flat, stable surface.
  2. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to an approved site ESD grounding point. See the instructions for your site.
  3. Before removing the FPCs, record their location in the chassis so that you can reinstall each FPC in the correct slot.
  4. Simultaneously turn both the ejector handles counterclockwise to unseat the FPC.
  5. Grasp the handles and slide the FPC straight out of the card cage halfway.
  6. Place one hand around the front of the FPC (the PIC housing) and the other hand under it to support it. Slide the FPC completely out of the chassis, and place it on the antistatic mat or in the electrostatic bag.Caution

    The weight of the FPC is concentrated in the back end. Be prepared to accept the full weight—up to 12.3 lb (5.6 kg)—as you slide the FPC out of the chassis.

    When the FPC is out of the chassis, do not hold it by the ejector handles, bus bars, or edge connectors. They cannot support its weight.

    Do not stack FPCs on top of one another after removal. Place each one individually in an electrostatic bag or on its own antistatic mat on a flat, stable surface.

  7. Repeat the procedure for each remaining FPC.
Figure 7: Removing an FPC Before Installing the M120 Router
Removing an FPC Before
Installing the M120 Router

Removing a CFPC

The router holds up to two CFPCs, which are installed vertically in the front of the router.

To remove a CFPC (see Figure 8):

  1. Place an electrostatic bag or antistatic mat on a flat, stable surface.
  2. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist, and connect the strap to an approved site ESD grounding point. See the instructions for your site.
  3. Pull the lower end of the ejector lever away from the CFPC faceplate to unseat the CFPC.
  4. Continue to pull the lever toward you and slide the CFPC straight out of the card cage halfway.
  5. Place one hand around the front of the CFPC and the other hand under it to support it. Slide the CFPC completely out of the chassis, and place it on the antistatic mat or in the electrostatic bag.Caution

    When the CFPC is out of the chassis, do not hold it by the ejector handle, bus bars, or edge connectors. They cannot support its weight.

    Place each individual CFPC in an individual electrostatic bag or on its own antistatic mat on a flat, stable surface.

Figure 8: Removing a CFPC Before Installing the M120 Router
Removing a CFPC
Before Installing the M120 Router