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Removing T320 Components from the Chassis

 

To make the T320 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. The following procedures describe how to remove components from the chassis, first from the rear and then from the front:

  1. Removing the T320 Power Supplies

  2. Removing the T320 SIBs

  3. Removing the T320 Control Boards

  4. Removing the T320 SCGs

  5. Removing the T320 Rear Fan Tray

  6. Removing the T320 Cable Management System

  7. Removing the T320 FPCs

Removing the T320 Power Supplies

The power supplies are located at the rear of the T320 chassis below the SIBs. Each power supply weighs approximately 12 lb (5.4 kg).

To remove the power supplies, starting with the upper power supply:

  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 the power supply faceplate to the off position (O). We recommend this even though the power supplies are not connected to power sources.
  3. Loosen the captive screws on the lower corners of the power supply faceplate completely. Twist the ejector handles on the upper corners of the faceplate counterclockwise to unseat the power supply.
  4. Twist the ejector handles on the upper corners of the faceplate counterclockwise to unseat the power supply.
  5. Grasp the handle on the power supply faceplate and pull firmly to start removing the power supply. Slide it halfway out of the chassis (see Figure 1).
  6. Place one hand underneath the power supply to support it and slide it completely out of the chassis.Caution

    Each power supply weighs approximately 12 lb (5.4 kg). Be prepared to support the full weight of the power supply as you remove it from the router.

  7. Repeat the procedure for the other power supply.
Figure 1: Removing a Power Supply Before Installing the Router
Removing a Power
Supply Before Installing the Router

Removing the T320 SIBs

Three SIBs are installed in the router. The SIBs are located in the rear of the chassis in the slots marked SIB0 through SIB2. Each SIB weighs approximately 4.5 lb (2.0 kg).

To remove the SIBs (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 one of the ESD points on the chassis. For more information about ESD, see Preventing Electrostatic Discharge Damage to a T320 Router.
  3. Loosen the captive screws (using a Phillips (+) screwdriver, number 2) on the ejector handles on each side of the SIB faceplate.
  4. Flip the ejector handles outward to unseat the SIB.
  5. Grasp both ejector handles, pull firmly, and slide the SIB about three-quarters of the way out of the chassis.
  6. Place one hand underneath the SIB 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 SIBs.
Figure 2: Removing a T320 SIB
Removing a T320 SIB

Removing the T320 Control Boards

The router can have up to two control boards. These are located in the upper rear of the chassis in the slots marked CB0 and CB1. Each one weighs approximately 5 lb (2.3 kg).

To remove a control board (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 control board faceplate.
  4. Flip the ejector handles outward to unseat the control board.
  5. Grasp the ejector handles and slide the control board about halfway out of the chassis.
  6. Place one hand underneath the control board 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 control board, if present.
Figure 3: Removing a T320 Control Board
Removing a T320 Control
Board

Removing the T320 SCGs

The router can have one or two SCGs installed. The SCGs are located in the rear of the chassis, above the SIBs. Each SCG weighs approximately 1.9 lb (0.9 kg).

To remove the SCGs (see Figure 4):

  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 one of the ESD points on the chassis.
  3. Press the online/offline button on the SCG faceplate and hold it down until the LED goes out (about 5 seconds).
  4. Loosen the captive screws on the edges of the SCG faceplate.
  5. Grasp the SCG by the handle on the faceplate and slide it out of the chassis.
  6. Place the SCG on the antistatic mat.
  7. Repeat the procedure for the second SCG.
Figure 4: Removing a T320 SCG
Removing a T320 SCG

Removing the T320 Rear Fan Tray

The rear fan tray is mounted vertically on the right side of the rear of the chassis. The rear fan tray contains five fans. The fan tray weighs about 7.3 lb (3.3 kg).

Caution

To maintain proper cooling, do not operate the router with the rear fan tray removed for more than one minute.

To remove the rear fan tray (see Figure 5):

  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. Loosen the captive screws on the top and bottom of the fan tray faceplate.
  3. Grasp the handles and pull the fan tray halfway out of the chassis.
  4. Place one hand under the fan tray to support it and pull the fan tray completely out of the chassis.
Figure 5: Removing the Rear T320 Fan Tray
Removing the
Rear T320 Fan Tray

Removing the T320 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:

  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.

Removing the T320 FPCs

The router holds up to eight FPCs, which are installed vertically in the front of the router. An empty FPC weighs approximately 14.8 lb (6.7 kg) and a fully configured FPC can weigh up to 19 lb (8.6 kg).

Each FPC slot not occupied by an FPC must be covered by an FPC blank panel. An FPC blank panel weighs 6.3 lb (2.9 kg).

To remove an FPC (see Figure 6):

  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 one of the ESD points on the chassis. For more information about ESD, see Preventing Electrostatic Discharge Damage to a T320 Router.
  3. Before removing the FPCs, record their location in the chassis so that you can reinstall each FPC in the correct slot.
  4. If you are removing a Type 2 or a Type 3 FPC, loosen the screws inside the ejector handles at the top and bottom of the FPC faceplate.
  5. Simultaneously turn both the ejector handles counterclockwise to unseat the FPC.
  6. Grasp the handles and slide the FPC straight out of the card cage halfway.
  7. 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 19 lb (8.6 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 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.

  8. Repeat the procedure for each remaining FPC.
Figure 6: Removing a T320 FPC
Removing a T320 FPC