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Maintaining ACX5448, ACX5448-D, and ACX5448-M Components

Replace an ACX5400 Fan Module

Remove a Fan Module from an ACX5400 Router

Before you remove a fan module from an ACX5400 router, ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage (see Prevention of Electrostatic Discharge Damage).

Ensure that you have the following parts and tools available to remove a fan module from an ACX5400 router:

  • ESD grounding strap

  • Antistatic bag or an antistatic mat

  • Phillips (+) screwdriver, number 2

The fan modules in ACX5400 routers are hot-removable and hot-insertable field replaceable units (FRUs): you can remove and replace them without powering off the router or disrupting routing functions.

CAUTION:

Replace a failed fan module with a new fan module within 1 minute of removal to prevent chassis overheating. Before removing the fan module, ensure that you have a replacement fan module at hand.

To remove a fan module from an ACX5400 router (see Figure 1):

  1. Place the antistatic bag or the antistatic mat on a flat, stable surface.
  2. Wrap and fasten one end of the ESD grounding strap around your bare wrist, and connect the other end of the strap to the ESD point on the chassis.
  3. Using a Phillips screwdriver, loosen the locking screw (3 or 4 turns).
  4. Grasp the handle on the fan module and pull firmly to slide the fan module halfway out of the chassis.
    Warning:

    To avoid injury, do not touch the fan with your hands or any tools as you slide the fan module out of the chassis—the fan might still be running.

  5. When the fan stops spinning, slide the fan module completely out of the chassis.
  6. Place the fan module in the antistatic bag or on the antistatic mat placed on a flat, stable surface.
Figure 1: Remove a Fan Module from an ACX5400 RouterRemove a Fan Module from an ACX5400 Router
Note:

When you remove a fan module, the CLI message Fan/Blower is Absent is logged in the system log, and Junos OS raises a minor alarm.

Install a Fan Module in an ACX5400 Router

Before you install a fan module in an ACX5400 router, ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage (see Prevention of Electrostatic Discharge Damage).

The fan modules in an ACX5400 router are hot-removable and hot-insertable field replaceable units (FRUs): you can remove and replace them without powering off the router or disrupting routing functions.

CAUTION:

Replace a failed fan module with a new fan module within 1 minute of removal to prevent chassis overheating. Before removing the fan module, ensure that you have a replacement fan module at hand.

Note:

The fan module provides port-to-FRU airflow (AFO) or FRU-to-port (AFI) airflow depending on the product model that you purchase.

Ensure that you have the following parts and tools available to install a fan module in an ACX5400 router:

  • ESD grounding strap

  • Antistatic bag or an antistatic mat

  • Phillips (+) screwdriver, number 2

To install a fan module in an ACX5400 router (see Figure 2):

  1. Wrap and fasten one end of the ESD grounding strap around your bare wrist, and connect the other end of the strap to the ESD point on the chassis.
  2. Taking care not to touch the connectors, remove the fan module from its bag.
  3. Align the module with the open slot on the rear panel of the chassis and slide it in until it is fully seated.
    CAUTION:

    Damage can occur if you attempt to install a fan module into a chassis with a different airflow direction. Compare the router product model with the airflow marking on the handle to ensure that you are installing a fan module with the same airflow direction as the chassis. The fan modules are designed so that they can only be inserted into the ACX5400 product model that supports the same airflow type. See Cooling System and Airflow in ACX5448, ACX5448-D, and ACX5448-M Routers for more information.

  4. Using a Phillips screwdriver, turn the locking screw until it is tight.
Figure 2: Install a Fan Module in an ACX5400 RouterInstall a Fan Module in an ACX5400 Router

Replace an ACX5400 AC Power Supply Module

Remove an AC Power Supply Module from an ACX5400 Router

Before you remove a PSM from a router, ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage (see Prevention of Electrostatic Discharge Damage).

Ensure that you have the following parts and tools available to remove a PSM from a router:

  • ESD grounding strap

  • Antistatic bag or an antistatic mat

  • Phillips (+) screwdriver, number 2

The power supply modules (PSMs) in an ACX5400 router are hot-removable and hot-insertable field-replaceable units (FRUs): you can remove and replace them without powering off the router or disrupting routing functions.

CAUTION:

Replace the PSM with a new PSM within 1 minute of removal to prevent chassis overheating.

To remove an AC PSM from an ACX5400 router (see Figure 4):

  1. Place the antistatic bag or the antistatic mat on a flat, stable surface.
  2. Wrap and fasten one end of the ESD grounding strap around your bare wrist, and connect the other end of the strap to the ESD point on the chassis.
    Note:

    If only one PSM is installed in your router, you must power off the router before removing the PSM. See Power Off an ACX5400 Router.

  3. Disconnect power to the router. If the AC power source outlet has a power switch, set it to the off (O) position. If the AC power source outlet does not have a power switch, gently pull out the power cord plug connected to the power source outlet.
  4. Remove the power source cable from the power supply faceplate. Remove the power cord from the power supply faceplate by detaching the power cord retainer and gently pulling out the socket end of the power cord connected to the power supply faceplate.
  5. Slide the ejector lever toward the handle until you can no longer slide it.
  6. Grasp the PSM handle and pull firmly to slide the PSM halfway out of the chassis.
  7. Place one hand under the PSM to support it and slide it completely out of the chassis. Take care not to touch power supply components, pins, leads, or solder connections.
  8. Place the PSM in the antistatic bag or on the antistatic mat placed on a flat, stable surface.
Figure 3: Remove PSM from an ACX5448 RouterRemove PSM from an ACX5448 Router
Figure 4: Remove PSM from an ACX5448-D or ACX5448-M RouterRemove PSM from an ACX5448-D or ACX5448-M Router

Install an AC Power Supply Module in an ACX5400 Router

The power supply modules (PSMs) in an ACX5400 router are hot-removable and hot-insertable field-replaceable units (FRUs): you can remove and replace them without powering off the router or disrupting routing functions.

To install an AC PSM in an ACX5400 router (see Figure 5):

  1. Wrap and fasten one end of the ESD grounding strap around your bare wrist, and connect the other end of the strap to the ESD point on the chassis.
  2. Taking care not to touch power supply components, pins, leads, or solder connections, remove the PSM from its bag.
    CAUTION:

    Verify that the direction of the arrow on the PSM handle matches the direction of airflow in the chassis. Ensure that each PSM you install in the chassis has the same airflow direction. If you install PSMs with two different airflow directions, Junos OS raises an alarm, and the status (ALM) LED blinks amber.

  3. Using both hands, place the PSM in the power supply slot on the rear panel of the router and slide it in until it is fully seated and the ejector lever slides into place.
  4. Press the latch located on the side of the PSM to slide it into the chassis.
  5. Attach the power cord to the PSM.
  6. Attach the power cord to the AC power source, and switch on the dedicated customer-site 2-pole circuit breaker. Follow the instructions for your site.
  7. Observe the status LED on the power supply faceplate. If the PSM is correctly installed and functioning normally, the status LED lights green steadily.
Figure 5: Install an AC PSM in an ACX5448 RouterInstall an AC PSM in an ACX5448 Router
Figure 6: Install an AC Power Cord in an ACX5448 routerInstall an AC Power Cord in an ACX5448 router
Figure 7: Install an AC PSM in an ACX5448-D or ACX5448-M RouterInstall an AC PSM in an ACX5448-D or ACX5448-M Router
Figure 8: Install an AC Power Cord in an ACX5448-D or ACX5448-M routerInstall an AC Power Cord in an ACX5448-D or ACX5448-M router
Note:

Each PSM must be connected to a dedicated power source outlet.

Note:

If you have a Juniper J-Care service contract, register any addition, change, or upgrade of hardware components at https://www.juniper.net/customers/csc/management/updateinstallbase.jsp . Failure to do so can result in significant delays if you need replacement parts. This note does not apply if you replace components with the same type of component.

Replace an ACX5400 DC Power Supply Module

Remove an ACX5400 DC Power Supply Module

Before you remove a power supply module (PSM), be aware of the following:

Note:

The minimum required number of PSMs must be present in the router at all times.

Warning:

Before performing DC power procedures, ensure that power is removed from the DC circuit. To ensure that all power is off, locate the 2-pole circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to the off position, and tape the switch handle of the circuit breaker in the off position.

CAUTION:

To maintain proper cooling and prevent thermal shutdown of the operating power supply unit, each power supply slot must contain a PSM. If you remove a PSM, you must install a replacement PSM shortly after the removal.

Note:

After powering off a PSM, wait at least 60 seconds before turning it back on.

CAUTION:

Do not mix AC and DC PSMs in the same chassis.

To remove a DC PSM:

  1. Switch off the dedicated customer-site 2-pole circuit breaker for the PSM being removed. Follow your site's procedures for preventing ESD damage.
  2. Make sure that the voltage across the DC power source cable leads is 0 V and that there is no chance that the cables might become active during the removal process.
  3. Verify that the status LED on the PSM is not lit.
  4. Wrap and fasten one end of the ESD grounding strap around your bare wrist, and connect the other end of the strap to the ESD point on the chassis.
  5. Remove the clear plastic cover protecting the terminal studs on the faceplate.
  6. Using a socket screw driver, remove the screw from each of the DC power terminals (see Figure 9).
  7. Remove the cable lugs from the terminals.
  8. Carefully move the power cables out of the way.
  9. Press the latch located on the DC PSM, to release it from the chassis.
  10. Pull the PSM straight out of the chassis (see Figure 10).
Figure 9: Disconnect the DC Power CablesDisconnect the DC Power Cables
Figure 10: Remove a DC PSMRemove a DC PSM

Install an ACX5400 DC Power Supply Module

Warning:

Before performing DC power procedures, ensure that power is removed from the DC circuit. To ensure that all power is off, locate the circuit breaker on the panel board that services the DC circuit, switch the circuit breaker to the off position, and tape the switch handle of the circuit breaker in the off position.

To install a DC PSM (see Figure 11):

  1. Ensure that the voltage across the DC power source cable leads is 0 V and that there is no chance that the cable leads might become active during installation.
  2. Wrap and fasten one end of the ESD grounding strap around your bare wrist, and connect the other end of the strap to the ESD point on the chassis.
  3. Using both hands, slide the DC PSM straight into the slot on the rear panel of the chassis until the PSM is fully seated in the slot. The PSM faceplate must align with any adjacent PSM faceplate installed in the power supply slot.
  4. Remove the clear plastic cover protecting the terminals on the faceplate.
  5. Remove the screws from the terminals.
  6. Secure each power cable lug to the terminal with the screw (see Figure 13). Apply between 5 lb-in. (0.6 Nm) and 6 lb-in. (0.7 Nm) of torque to the screw. Do not overtighten the screw (use a socket nut driver).
    1. Secure the positive (+) DC source power cable lug to the RTN (return) terminal.

    2. Secure the negative (–) DC source power cable lug to the –48V (input) terminal.

    CAUTION:
    • You must ensure that power connections maintain the proper polarity. The power source cables might be labeled (+) and (–) to indicate their polarity. There is no standard color coding for DC power cables. The color coding used by the external DC power source at your site determines the color coding for the leads on the power cables that attach to the terminal studs on each PSM.

    • Ensure that each power cable lug seats flush against the surface of the terminal block as you are tightening the screws. Ensure that each screw is properly threaded into the terminal. Applying installation torque to the screw when improperly threaded can result in damage to the terminal.

  7. Replace the clear plastic cover over the terminals on the faceplate.
  8. Verify that the power cabling is correct, that the cables do not touch or block access to router components, and that they do not drape where people could trip over them.
  9. Attach the power cable to the DC power source, and switch on the dedicated customer-site 2-pole circuit breaker. Follow the instructions for your site.
    Note:

    If more than one PSM is being installed, turn on all PSMs at the same time.

  10. Observe the status LED on the power supply faceplate. If the PSM is correctly installed and functioning normally, the status LED lights green steadily.
Figure 11: Install a DC PSM in an ACX5448 RouterInstall a DC PSM in an ACX5448 Router
Figure 12: Install a DC PSM in an ACX5448-D or ACX5448-M RouterInstall a DC PSM in an ACX5448-D or ACX5448-M Router
Figure 13: Connect the DC Power CablesConnect the DC Power Cables

Replace an SFP, SFP+, or QSFP+ Transceiver

The transceivers for Juniper Networks devices are hot-removable and hot-insertable field-replaceable units (FRUs). You can remove and replace them without powering off the device or disrupting the device functions.

Remove a Transceiver

Before you begin removing a transceiver from a device, ensure that you have taken the necessary precautions for the safe handling of lasers (see Laser and LED Safety Guidelines and Warnings).

Ensure that you have the following parts and tools available:

  • An antistatic bag or an antistatic mat

  • Rubber safety caps to cover the transceiver and fiber-optic cable connector

  • A dust cover to cover the port or a replacement transceiver

Note:

After you remove a transceiver or when you change the media-type configuration, wait for 6  seconds for the interface to display the operational commands.

To remove a transceiver:

  1. Place the antistatic bag or antistatic mat on a flat, stable surface.
  2. Wrap and fasten one end of the ESD grounding strap around your bare wrist, and connect the other end of the strap to an ESD point.
  3. Label the cables connected to the transceiver so that you can reconnect them correctly later.
  4. Remove the cable connected to the transceiver (see Disconnect a Fiber-Optic Cable). Cover the transceiver and the end of each fiber-optic cable connector with a rubber safety cap immediately after disconnecting the fiber-optic cables.
    Laser Warning:

    Do not look directly into a fiber-optic transceiver or into the ends of fiber-optic cables. Fiber-optic transceivers and fiber-optic cables connected to a transceiver emit laser light that can damage your eyes.

    Laser Warning:

    Do not leave a fiber-optic transceiver uncovered except when inserting or removing a cable. The rubber safety cap keeps the port clean and prevents accidental exposure to laser light.

  5. If there is a cable management system, arrange the cable in the cable management system to prevent it from dislodging or developing stress points. Secure the cable so that it does not support its own weight as it hangs to the floor. Place excess cable out of the way in a neatly coiled loop in the cable management system. Placing fasteners on the loop helps to maintain its shape.
    CAUTION:

    Do not bend the fiber-optic cable beyond its minimum bend radius. An arc smaller than a few inches in diameter can damage the cable and cause problems that are difficult to diagnose.

  6. By using your fingers, pull open the ejector lever on the transceiver to unlock the transceiver.
    CAUTION:

    Ensure that you open the ejector handle completely until you hear it click. Doing this prevents damage to the transceiver.

    Figure 14 shows how to remove an SFP transceiver. The procedure is the same for SFP+ and QSFP+ transceivers.

    Figure 14: Small Form-Factor Pluggable (SFP) TransceiverSmall Form-Factor Pluggable (SFP) Transceiver
  7. Grasp the transceiver ejector handle, and pull the transceiver approximately 0.5 in. (1.3  cm) out of the interface port.
  8. Using your fingers, grasp the body of the transceiver, and pull it the rest of the way out of the interface port.
  9. Place a rubber safety cap over the transceiver.
  10. Place the removed transceiver on an antistatic mat or in an electrostatic bag.
  11. Place the dust cover over the empty port or install the replacement transceiver.
CAUTION:

After removing a transceiver from the chassis, wait at least 30 seconds before reinserting it or inserting a transceiver into a different slot.

Install a Transceiver

Before you begin to install a transceiver in a device, ensure that you have taken the necessary precautions for safe handling of lasers (see Laser and LED Safety Guidelines and Warnings).

Ensure that you have a rubber safety cap available to cover the transceiver.

Note:

After you insert a transceiver or after you change the media-type configuration, wait for 6  seconds for the interface to display operational commands.

Note:

We recommend that you use only optical transceivers and optical connectors purchased from Juniper Networks with your Juniper Networks device.

CAUTION:

If you face a problem running a Juniper Networks device that uses a third-party optic or cable, the Juniper Networks Technical Assistance Center (JTAC) can help you diagnose the source of the problem. Your JTAC engineer might recommend that you check the third-party optic or cable and potentially replace it with an equivalent Juniper Networks optic or cable that is qualified for the device.

To install a transceiver:

  1. Attach an ESD grounding strap to your bare wrist, and connect the other end of the strap to an ESD grounding point.
  2. Remove the transceiver from its bag.
  3. Verify that each transceiver is covered by a rubber safety cap. If it is not, cover the transceiver with a safety cap.
    Laser Warning:

    Do not leave a fiber-optic transceiver uncovered except when inserting or removing a cable. The rubber safety cap keeps the port clean and prevents accidental exposure to laser light.

  4. Using both hands, carefully place the transceiver in the empty port. The connectors must face the chassis.
    CAUTION:

    Before you slide the transceiver into the port, ensure that the transceiver is aligned correctly. Misalignment might cause the pins to bend, making the transceiver unusable.

  5. Slide in the transceiver until it is fully seated. If you are unable to fully insert the transceiver, ensure that the connector is facing the right way.
    Figure 15: Install a TransceiverInstall a Transceiver
      1

    Ejector lever

     
  6. Close the ejector handle of the transceiver.
  7. Remove the rubber safety cap from the transceiver and from the end of the cable. Insert the cable into the transceiver.
    Laser Warning:

    Do not look directly into a fiber-optic transceiver or into the ends of fiber-optic cables. Fiber-optic transceivers and fiber-optic cables connected to a transceiver emit laser light that can damage your eyes.

Replace a QSFP28 Transceiver

28-Gbps quad small form-factor pluggable (QSFP28) transceivers are hot-insertable and hot-removable. Removing a QSFP28 transceiver does not interrupt router functioning, but the removed QSFP28 transceiver no longer receives or transmits data.

Remove a QSFP28 Transceiver

Before you begin to remove a transceiver from a device, ensure that you have taken the necessary precautions for safe handling of lasers (see Laser and LED Safety Guidelines and Warnings).

Ensure that you have the following parts and tools available:

  • An antistatic bag or an antistatic mat

  • Rubber safety caps to cover the transceiver and fiber-optic cable connector

  • A dust cover to cover the port or a replacement transceiver

The transceivers for Juniper Networks devices are hot-removable and hot-insertable field-replaceable units (FRUs). You can remove and replace them without powering off the device or disrupting the device functions.

Note:

After you insert a transceiver or after you change the media-type configuration, wait for 6 seconds for the interface to display operational commands.

Note:

We recommend that you use only optical transceivers and optical connectors purchased from Juniper Networks with your Juniper Networks device.

To remove a QSFP28 transceiver (see Figure 16):

  1. Place an electrostatic bag or antistatic mat on a flat, stable surface to receive the QSFP28 transceiver. Have ready a rubber safety cap for the QSFP28 transceiver and the cable.
  2. Wrap and fasten one end of the ESD grounding strap around your bare wrist, and connect the other end of the strap to an ESD point.
  3. Label the cable connected to the QSFP28 transceiver so that you can later reconnect the cable to the correct QSFP28 transceiver.
  4. Disconnect the cable from the transceiver. Immediately cover the transceiver and the end of the cable with a rubber safety cap.
    Laser Warning:

    Do not look directly into a fiber-optic transceiver or into the ends of fiber-optic cables. Fiber-optic transceivers and fiber-optic cable connected to a transceiver emit laser light that can damage your eyes.

    CAUTION:

    Do not leave a fiber-optic transceiver uncovered except when inserting or removing a cable. The safety cap keeps the port clean and prevents accidental exposure to laser light.

  5. If there is a cable management system, arrange the cable in the cable management system to prevent it from dislodging or developing stress points. Secure the cable so that it does not support its own weight as it hangs to the floor. Place excess cable out of the way in a neatly coiled loop in the cable management system. Placing fasteners on the loop helps to maintain its shape.
    CAUTION:

    Avoid bending the fiber-optic cable beyond its minimum bend radius. An arc smaller than a few inches in diameter can damage the cable and cause problems that are difficult to diagnose.

  6. Pull the transceiver’s rubber handle straight back.

    The locking pins on the transceiver automatically releases the transceiver.

    Figure 16: 28-Gbps Quad Small Form-Factor Pluggable (QSFP28) Transceiver28-Gbps Quad Small Form-Factor Pluggable (QSFP28) Transceiver
  7. Place the transceiver on the antistatic mat or in the electrostatic bag.
  8. Place the dust cover over the empty port or install the replacement transceiver.

Install a QSFP28 Transceiver

Before you begin to install a transceiver in a device, ensure that you have taken the necessary precautions for safe handling of lasers (see Laser and LED Safety Guidelines and Warnings).

Ensure that you have a rubber safety cap available to cover the transceiver.

The transceivers for Juniper Networks devices are hot-removable and hot-insertable field-replaceable units (FRUs): You can remove and replace them without powering off the device or disrupting the device functions.

Note:

After you insert a transceiver or after you change the media-type configuration, wait for 6  seconds for the interface to display operational commands.

Note:

We recommend that you use only optical transceivers and optical connectors purchased from Juniper Networks with your Juniper Networks device.

CAUTION:

If you face a problem running a Juniper Networks device that uses a third-party optic or cable, the Juniper Networks Technical Assistance Center (JTAC) can help you diagnose the source of the problem. Your JTAC engineer might recommend that you check the third-party optic or cable and potentially replace it with an equivalent Juniper Networks optic or cable that is qualified for the device.

To install a replacement QSFP28 transceiver (see Figure 17):

  1. Wrap and fasten one end of the ESD grounding strap around your bare wrist, and connect the other end of the strap to an ESD point.
  2. Verify that a rubber safety cap covers the QSFP28 transceiver. If it is not, cover the transceiver with a safety cap.
  3. Orient the transceiver in front of the port so that the QSFP28 connector faces the appropriate direction.
    Figure 17: Install a QSFP28 TransceiverInstall a QSFP28 Transceiver
  4. Slide the transceiver into the slot until the locking pins lock in place. If there is resistance, remove the transceiver and flip it so that the connector faces the other direction.
  5. Remove the rubber safety cap from the transceiver and from the end of the cable, and insert the cable into the transceiver.
    Laser Warning:

    Do not look directly into a fiber-optic transceiver or into the ends of fiber-optic cables. Fiber-optic transceivers and fiber-optic cable connected to a transceiver emit laser light that can damage your eyes.

    CAUTION:

    Do not leave a fiber-optic transceiver uncovered except when inserting or removing a cable. The safety cap keeps the port clean and prevents accidental exposure to laser light.

  6. If there is a cable management system, arrange the cable in the cable management system to prevent the cable from dislodging or developing stress points. Secure the cable so that it does not support its own weight as it hangs to the floor. Place excess cable out of the way in a neatly coiled loop in the cable management system. Placing fasteners on the loop helps to maintain its shape.
    CAUTION:

    Do not let the fiber-optic cable hang free from the connector. Do not allow fastened loops of the cable to dangle, which stresses the cable at the fastening point.

    CAUTION:

    Avoid bending the fiber-optic cable beyond its minimum bend radius. An arc smaller than a few inches in diameter can damage the cable and cause problems that are difficult to diagnose.

  7. Verify that the status LEDs on the router indicate that the QSFP28 transceiver is functioning correctly. You can also verify that the interface port is functioning by running the show chassis fpc pic-status command.

Replacing a CFP2 Transceiver

Removing a CFP2 Transceiver

CFP2 transceivers are hot-insertable and hot-removable. Removing a CFP2 transceiver does not interrupt the device functions, but the removed CFP2 transceiver no longer receives or transmits data.

Figure 18: Form-Factor Pluggable (CFP2)Form-Factor Pluggable (CFP2)

To remove a CFP2 transceiver (see Figure 18):

  1. Place an electrostatic bag or antistatic mat on a flat, stable surface to receive the CFP2 transceiver. Have ready a rubber safety cap for the CFP2 transceiver and the cable.
  2. Wrap and fasten one end of the ESD grounding strap around your bare wrist, and connect the other end of the strap to the ESD point on the chassis.
  3. Label the cable connected to the CFP2 transceiver so that you can later reconnect it to the correct CFP2 transceiver.
  4. Disconnect the cable from the CFP2 transceiver. Immediately cover the transceiver and the end of the cable with a rubber safety cap.
    Laser Warning:

    Do not look directly into a fiber-optic transceiver or into the ends of fiber-optic cables. Fiber-optic transceivers and fiber-optic cable connected to a transceiver emit laser light that can damage your eyes.

    CAUTION:

    Do not leave a fiber-optic transceiver uncovered except when inserting or removing cable. The safety cap keeps the port clean and prevents accidental exposure to laser light.

  5. Arrange the cable in the cable management system to prevent it from dislodging or developing stress points. Secure the cable so that it is not supporting its own weight as it hangs to the floor. Place excess cable out of the way in a neatly coiled loop in the cable management system. Placing fasteners on the loop helps to maintain its shape.
    CAUTION:

    Avoid bending fiber-optic cable beyond its minimum bend radius. An arc smaller than a few inches in diameter can damage the cable and cause problems that are difficult to diagnose.

  6. Pull the ejector latch to the extreme end away from the CFP2 transceiver faceplate to unseat the CFP2 transceiver from the device. Pull the CFP2 transceiver out of the device and place it on the antistatic mat or in the electrostatic bag.
    Note:

    You cannot remove the transceiver until you move the ejector latch to the extreme end.

Installing a CFP2 Transceiver

To install a replacement CFP2:

  1. Wrap and fasten one end of the ESD grounding strap around your bare wrist, and connect the other end of the strap to the ESD point on the chassis.
  2. Verify that a rubber safety cap covers the CFP2 transceiver, installing one if necessary.
  3. Orient the CFP2 over the port in the device so that the connector end will enter the slot first and the CFP2 connector faces the appropriate direction.
  4. Slide the CFP2 into the slot. If there is resistance, remove the CFP2 and flip it so that the connector faces the other direction.
    Note:

    When inserting the C form-factor pluggable 2 (CFP2) transceiver, ensure that the transceiver sits tightly in the port. You hear a distinct click sound when the latch locks into the corresponding port. The latch must be fully engaged in the corresponding port for the CFP2 transceiver to function properly. Failing to do so can result in loss of connection. To verify that the CFP2 transceiver module is inserted properly, give a gentle pull by grasping the sides of the module. The module should sit tightly.

  5. Remove the rubber safety cap from the transceiver and the end of the cable, and insert the cable into the transceiver.
    Laser Warning:

    Do not look directly into a fiber-optic transceiver or into the ends of fiber-optic cables. Fiber-optic transceivers and fiber-optic cable connected to a transceiver emit laser light that can damage your eyes.

    CAUTION:

    Do not leave a fiber-optic transceiver uncovered except when inserting or removing cable. The safety cap keeps the port clean and prevents accidental exposure to laser light.

  6. Arrange the cable in the cable management system to prevent the cable from dislodging or developing stress points. Secure the cable so that it is not supporting its own weight as it hangs to the floor. Place excess cable out of the way in a neatly coiled loop in the cable management system. Placing fasteners on the loop helps to maintain its shape.
    CAUTION:

    Do not let fiber-optic cable hang free from the connector. Do not allow fastened loops of cable to dangle, which stresses the cable at the fastening point.

    CAUTION:

    Avoid bending fiber-optic cable beyond its minimum bend radius. An arc smaller than a few inches in diameter can damage the cable and cause problems that are difficult to diagnose.

  7. Verify that the status LEDs on the device indicate that the CFP2 is functioning correctly.

How to Handle Fiber-Optic Cables

Fiber-optic cables connect to optical transceivers that are installed in Juniper Networks devices.

To maintain fiber-optic cables:

  • When you unplug a fiber-optic cable from a transceiver, place rubber safety caps over the transceiver and on the end of the cable.

  • Anchor fiber-optic cables to prevent stress on the connectors. When attaching a fiber-optic cable to a transceiver, be sure to secure the fiber-optic cable so that it does not support its own weight as it hangs to the floor. Never let a fiber-optic cable hang free from the connector.

  • Avoid bending fiber-optic cables beyond their minimum bend radius. Bending fiber-optic cables into arcs smaller than a few inches in diameter can damage the cables and cause problems that are difficult to diagnose.

  • Frequent plugging and unplugging of fiber-optic cables in and out of optical instruments can damage the instruments, which are expensive to repair. Attach a short fiber extension to the optical equipment. Any wear and tear due to frequent plugging and unplugging is then absorbed by the short fiber extension, which is easier and less expensive to replace than the instruments.

  • Keep fiber-optic cable connections clean. Microdeposits of oil and dust in the canal of the transceiver or cable connector can cause loss of light, reduction in signal power, and possibly intermittent problems with the optical connection.

    • To clean the transceiver canal, use an appropriate fiber-cleaning device such as RIFOCS Fiber Optic Adaptor Cleaning Wands (part number 946). Follow the instructions in the cleaning kit you use.

    • After cleaning the transceiver, make sure that the connector tip of the fiber-optic cable is clean. Use only an approved alcohol-free fiber-optic cable cleaning kit such as the Opptex Cletop-S®Fiber Cleaner. Follow the instructions in the cleaning kit you use.