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BTI7802 Field-Replaceable Units (FRUs)

 

Field-replaceable units are pre-installed when the BTI7802 is delivered. This section describes how to remove and replace the FRUs on the BTI7802.

Warning

Use proper caution when working with the equipment. This chapter might not cover every possible hazardous condition.

Safety Warnings

  • This equipment is intended to be installed and serviced by qualified personnel.

  • Be familiar with the safety guidelines described in the BTI7800 Series Hardware Overview and Installation Guide.

  • Ensure the chassis is installed properly and secured onto the rack.

  • Ensure you have an unobstructed path to the chassis.

  • Avoid contact with rotating fan blades.

Electrical Warnings

Caution

Electrostatic Discharge (ESD) can damage module components, causing complete or intermittent failures. ESD can occur when a module is improperly handled.

To prevent ESD damage to a module, follow these guidelines:

  • Always wear an ESD grounding device, such as an ESD wrist strap, when handling a module.

  • Do not remove a module from its antistatic bag until installation. Store removed modules in antistatic packaging.

  • If you need to set a module down, place it back into its antistatic packaging or on a properly-grounded antistatic mat.

  • Handle the module by its edges and/or its faceplate and avoid touching any pins, leads, or solder connections on the circuit board.

Replacing the BTI7802 PEM

Use this procedure to remove and replace the power entry modules on the BTI7802 chassis. The procedure is the same for replacing the DC PEM and AC PEM.

The PEM that you are replacing must be disconnected from its power source. The other PEMs can remain powered.

Note

Ensure that you are familiar with the safety and electrical warnings described in BTI7802 Field-Replaceable Units (FRUs).

Note

If you plan on reusing the AC PEM that you are removing, you must wait for a minimum of 60 seconds before reinserting the removed PEM into another slot or chassis.

  1. Follow the appropriate steps to disconnect the PEM from the power source in your plant.
  2. Disconnect the power cable from the faulty PEM.
  3. Remove the PEM from the chassis.
    1. Loosen the latch thumbscrew. Pull the latch into the open position.

    2. Slowly pull out the module.

      Once the module is removed, place it in an antistatic bag or on a grounded antistatic mat.

    Note

    If you plan on reusing this AC PEM, you must wait for a minimum of 60 seconds before reinserting it into another slot or chassis.

  4. Install the replacement PEM.
    1. Pull the latch into the open position

    2. Carefully slide the replacement module along the slot guides until the PEM connects to the backplane

    3. Move the latch to the closed position. Gently tighten the thumbscrew.

  5. Attach the power cable to the PEM.
  6. Follow the appropriate steps to connect the new PEM to the power source.
  7. Power on the PEM. The DC OK LED lights up.

You have successfully completed this procedure.

Replacing the BTI7802 CAP

This topic describes how to remove and replace the Chassis Alarm Panel (CAP) on the BTI7802 chassis.

The CAP is hot-swappable and can be replaced while the system is powered on and operational.

Note

Ensure that you are familiar with the safety and electrical warnings described in BTI7802 Field-Replaceable Units (FRUs).

Tools Required

  • Number 2 Phillips screwdriver

  1. Remove all cable or other obstructions.
  2. Loosen the thumbscrew at the top of the module.
  3. Carefully grip the handle. Gently pull the module out of the chassis.

  4. Place the module in an antistatic bag or on a grounded antistatic mat.
  5. Align the replacement CAP with the slot guides.
  6. Gently push the module until it connects to the backplane.

    Once the module is in place, the ACT LED turns solid green.

  7. Carefully tighten the thumbscrew.

You have successfully completed this procedure.

Replacing the BTI7802 FAN2

Use this procedure to replace a 2-Slot Chassis Cooling Module on the BTI7802 chassis.

The cooling module is hot-swappable, and can be replaced while the system is powered on and operational.

Note

Ensure that you are familiar with the safety and electrical warnings described in BTI7802 Field-Replaceable Units (FRUs).

Do not pull out the cooling module until the fan blades have stopped rotating.

Note

To ensure there is no risk of the system overheating, you should complete this task within five minutes in a 30oC (86oF) working ambient.

Tools Required

  • Number 2 Phillips screwdriver

Note

The BT8A78CH2-I02 chassis supports the BT8A78FAN2 cooling module only. An Equipment Mismatch (eqptMism) alarm is raised if a different cooling module is installed.

  1. Slide the latch to the left and pull the handle to unseat the module. Do not pull out the module until the fan blades have stopped rotating.

  2. Remove the faulty cooling module.

    Hold the module handle, and slowly slide the cooling module out.

  3. Place the cooling module in an antistatic bag or a grounded antistatic mat.
  4. Align the replacement cooling module with the slot guides.
  5. Gently push the module until it connects to the backplane.

    Once the module is in place, the Active LED turns solid green.

You have successfully completed this procedure.

Replacing a BTI7802 Air Filter

Use this procedure to replace an air filter on the BTI7802 chassis.

The air filter can be replaced while the system is powered on and operational.

The filter should be replaced every six months in a clean environment. If the dust level in your plant is high, replace the filter every three months. Usually the air filters in chassis installed lower in a rack require replacement more often than those installed higher in a rack.

Note

You must use the type of air filters BT8A78AFR2 that are delivered with the BTI7802.

Note

Ensure that you are familiar with the safety and electrical warnings described in BTI7802 Field-Replaceable Units (FRUs).

Tools Required

  • Number 2 Phillips screwdriver

  1. Go to the rear of the BTI7802 chassis and unfasten the screw to remove the filter cover.

    Note

    The cover is detachable when unfastened. The screw is captive in the cover. Use the finger and thumb inserts on the filter cover as an aid to detach the cover.

  2. Remove the air filter from the channel and discard it.

  3. Ensure the channel is free from debris before installing the new filter.
  4. Install a new air filter.
    1. Remove the filter from the packaging and insert fully into the channel, ensuring the filter remains straight and contains no creases.

  5. Replace the filter cover and tighten the captive screw, ensuring the cover is fitted correctly and fastened securely .

You have successfully completed this procedure.