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Replace Power Supply Units on the MX301

Maintaining the MX301 includes removing and installing the power supply units (PSUs).

The power supply units (PSUs) on the MX301 are hot-removable and hot-insertable field-replaceable units (FRUs) with support for 1+1 redundancy. You can remove and replace a PSU without powering off the MX301 or disrupting the device functions.

CAUTION:

Do not mix AC, DC, and HVAC/DC PSUs in the same chassis.

Before you remove or install a PSU, ensure that you have taken the necessary precautions to prevent electrostatic discharge (ESD) damage.

Ensure that you have the following parts and tools:

  • An ESD grounding strap

  • An antistatic bag or an antistatic mat

  • A replacement PSU

  • A blank cover panel (in case you're not replacing the PSU)

  • (For DC power supply) Philips (+) screwdriver, number 2

Replace an AC PSU on the MX301

Remove the JPSU-850W-AC-AFO

This topic guides you through the steps to remove the JPSU-850W-AC-AFO AC power supply from the MX301 Router.

CAUTION:

Avoid leaving the PSU slot empty for more than 30 minutes when the device is operational. For optimal airflow, all PSUs must be installed in the chassis.
CAUTION:

If you need to replace all the power supplies installed in your MX301, you must power off the MX301 before removing the power supplies.

To remove the JPSU-850W-AC-AFO PSU:

  1. Wrap and fasten one end of the ESD cable grounding strap around your bare wrist and connect the other end to a site ESD point.
  2. Place the antistatic bag or the antistatic mat on a flat, stable surface.
  3. If the AC power source outlet has a power switch, set it to the off (O) position.
  4. Unplug the power cord that is connected to the power source outlet.
  5. Unplug the power cord from the device inlet of the PSU.
  6. Press the release latch located on the right side of the PSU toward the left side (see Figure 1).
  7. Pull the PSU straight out of the chassis.
    Figure 1: Remove the AC PSU Remove the AC PSU
  8. Place the PSU in the antistatic bag or on the antistatic mat.
  9. If you are not immediately replacing the PSU, install the cover panel over the PSU slot on the chassis.

Install the JPSU-850W-AC-AFO

This topic guides you through the steps to install the JPSU-850W-AC-AFO AC power supply in the MX301 Router.

To install the JPSU-850W-AC-AFO PSU:

  1. Wrap and fasten one end of the ESD cable grounding strap around your bare wrist and connect the other end to a site ESD point.
  2. If the PSU slot in the chassis has a cover panel on it, remove the cover panel. Save the cover panel for subsequent use.
  3. Taking care not to touch the pins, leads, or solder connections on the PSU, remove the PSU from the bag.
  4. Using both hands, place the PSU in the PSU slot on the rear panel of the router. Slide the PSU straight into the chassis until the PSU is fully seated in the chassis slot and the release latch slides into place. Ensure that the PSU faceplate is flush with the adjacent PSU faceplate.
    Figure 2: Install the AC PSU Install the AC PSU
  5. Connect the power cord (see Connect AC Power to the MX301).
    Note:

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

Replace a DC PSU on the MX301

Remove the JPSU-850W-DC-AFO

This topic guides you through the steps to remove the JPSU-850W-DC-AFO DC PSU from the MX301 Router.

CAUTION:

Avoid leaving the PSU slot empty for more than 30 minutes when the device is operational. For optimal airflow, all PSUs must be installed in the chassis.
CAUTION:

If you need to replace all the power supplies installed in your MX301, you must power off the MX301 before removing the power supplies.

To remove the JPSU-850W-DC-AFO PSU:

  1. Wrap and fasten one end of the ESD cable grounding strap around your bare wrist and connect the other end to a site ESD point.
  2. Place the antistatic bag or the antistatic mat on a flat, stable surface.
  3. Switch off the external circuit breakers for all cables connected to the PSU. Ensure that the voltage across the power source cable leads is 0 V. You must ensure that the cables do not become active during the PSU removal process.
  4. Remove the clear plastic cover protecting the terminal studs on the PSU faceplate.
  5. Remove the screws and washers from the terminal studs.
  6. Remove the cable terminals from the terminal studs. Carefully move the power cables out of the way.
  7. Loosen the captive screws on the lower edge of the PSU faceplate.
  8. Press the release latch located on the right side of the PSU toward the left side (see Figure 3).
  9. Pull the PSU straight out of the chassis.
    Figure 3: Remove the DC PSU Remove the DC PSU
  10. Place the PSU in the antistatic bag or on the antistatic mat.
  11. If you are not immediately replacing the PSU, install the cover panel over the PSU slot on the chassis.

Install the JPSU-850W-DC-AFO

This topic guides you through the steps to install the JPSU-850W-DC-AFO DC PSU in the MX301 Router.

To install the JPSU-850W-DC-AFO PSU:

  1. Wrap and fasten one end of the ESD cable grounding strap around your bare wrist and connect the other end to a site ESD point.
  2. Switch off the external circuit breakers for all cables connected to the PSU. Ensure that the voltage across the power source cable leads is 0 V. You must ensure that the cables do not become active during the PSU removal process.
  3. If the PSU slot in the chassis has a cover panel on it, remove the cover panel. Save the cover panel for subsequent use.
  4. Taking care not to touch the pins, leads, or solder connections on the PSU, remove the PSU from the bag.
  5. Using both hands, place the PSU in the PSU slot on the rear panel of the router. Slide the PSU straight into the chassis until the PSU is fully seated in the chassis slot and the release latch slides into place. Ensure that the PSU faceplate is flush with the adjacent PSU faceplate.
    Figure 4: Install the DC PSU Install the DC PSU
  6. Tighten the captive screws on the lower edge of the PSU faceplate.
  7. Connect the power cables (see Connect DC Power to the MX301).

Replace an HVAC/DC PSU on the MX301

Remove the JPSU-850W-HV-AFO

This topic guides you through the steps to remove the JPSU-850W-HV-AFO HVAC/DC PSU from the MX301 Router.

CAUTION:

Avoid leaving the PSU slot empty for more than 30 minutes when the device is operational. For optimal airflow, all PSUs must be installed in the chassis.
CAUTION:

If you need to replace all PSUs installed in your MX301, you must power off the MX301 before removing the PSUs.

To remove the JPSU-850W-HV-AFO PSU:

  1. Wrap and fasten one end of the ESD cable grounding strap around your bare wrist and connect the other end to a site ESD point.
  2. Place the antistatic bag or the antistatic mat on a flat, stable surface.
  3. Switch off the dedicated circuit breaker for the PSU and remove the power cord from the HVAC/DC power source. Follow the instructions for your site.
  4. Press the release latch located on the right side of the PSU toward the left side (see Figure 5).
  5. Pull the PSU straight out of the chassis.
    Figure 5: Remove the HVAC/DC PSU Remove the HVAC/DC PSU
  6. Place the PSU in the antistatic bag or on the antistatic mat.
  7. If you are not immediately replacing the PSU, install the cover panel over the PSU slot on the chassis.

Install the JPSU-850W-HV-AFO

This topic guides you through the steps to install the JPSU-850W-HV-AFO HVAC/DC PSU in the MX301 Router.

To install the JPSU-850W-HV-AFO PSU:

  1. Wrap and fasten one end of the ESD cable grounding strap around your bare wrist and connect the other end to a site ESD point.
  2. If the PSU slot in the chassis has a cover panel on it, remove the cover panel. Save the cover panel for subsequent use.
  3. Taking care not to touch the pins, leads, or solder connections on the PSU, remove the PSU from the bag.
  4. Using both hands, place the PSU in the PSU slot on the rear panel of the router. Slide the PSU straight into the chassis until the PSU is fully seated in the chassis slot and the release latch slides into place. Ensure that the PSU faceplate is flush with the adjacent PSU faceplate.
    Figure 6: Install the HVAC/DC PSU Install the HVAC/DC PSU
  5. Connect the power cords (see Connect HVAC/DC Power to the MX301).