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SRX4300 Power Supply Maintenance

SUMMARY Maintaining an SRX4300 appliance includes removing a failed power supply unit (PSU) and installing a functional PSU.

Replace an AC PSU on the SRX4300

The SRX4300 rear panel has two AC PSUs, which are hot-removable and hot-insertable field-replaceable units (FRUs). You can remove and replace the PSUs without powering off the SRX4300 or disrupting the firewall functions.

Ensure that you have the following parts and tools:

  • ESD grounding strap

  • Antistatic bag or an antistatic mat

  • A replacement AC PSU

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

Remove the AC PSU from the SRX4300

To remove an AC PSU from the appliance (see Figure 1):

CAUTION:

Avoid leaving the PSU slot empty for more than 30 minutes whem the device is operational. For proper airflow, you must place the PSU in the chassis. Always cover the empty PSU slot with a blank panel.
  1. If the AC power source outlet has a power switch, set it to the off (O) position.
  2. Pull out the power cord connected to the power source outlet.
  3. Place the antistatic bag or the antistatic mat on a flat, stable surface.
  4. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to the ESD point on the chassis.
  5. Unplug the power cord from the device inlet on the PSU.
  6. Press the latch, which is on the right side of the power outlet, to the left.
  7. Pull the PSU straight out of the chassis.
    Figure 1: Remove an SRX4300 AC PSU
  8. Place the PSU in the antistatic bag or on the antistatic mat that you've placed on a flat, stable surface.
  9. If you're not replacing the PSU, install the cover panel over the PSU slot.

Install the AC PSU in the SRX4300

To install an AC PSU (see Figure 2):

  1. Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD point on the chassis.
  2. If the PSU slot 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 SRX4300. Slide the PSU straight into the chassis until the PSU is fully seated in the chassis slot. Ensure that the PSU faceplate is flush with the adjacent PSU faceplate.
    Figure 2: Install an SRX4300 AC PSU Install an SRX4300 AC PSU
  5. Connect the power cord (see Connect SRX4300 to Power).

Replace a DC PSU on the SRX4300

The rear panel of the SRX4300 has two DC PSUs , which are hot-removable and hot-insertable field-replaceable units (FRUs). You can remove and replace the PSUs without powering off the SRX4300 or disrupting the firewall functions.

Ensure that you have the following parts and tools:

  • ESD grounding strap

  • Antistatic bag or an antistatic mat

  • A replacement DC PSU

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

Remove the DC PSU from an SRX4300

To remove a DC PSU from the appliance (see Figure 3):

CAUTION:

Avoid leaving the PSU slot empty for more than 30 minutes when the device is operational. For proper airflow, you must place the PSU in the chassis. Always cover the empty PSU slot with a blank panel.
  1. Attach an electrostatic discharge (ESD) grounding strap to your bare wrist and connect the strap to the ESD point on the chassis.
  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 removal process.
  4. Remove the clear plastic cover protecting the terminal studs from the faceplate.
  5. Remove the screws and washers from the terminals using a number 2 Phillips screwdriver.
  6. Remove the cable terminals from the terminal studs. Carefully move the power cables out of the way.
  7. Press the latch, which is on the right side of the power outlet, to the left.
  8. Pull the PSU straight out of the chassis.
    Figure 3: Remove an SRX4300 DC PSU Remove an SRX4300 DC PSU
  9. Place the PSU in the antistatic bag or on the antistatic mat that you've placed on a flat, stable surface.
  10. If you are not replacing the PSU, install the cover panel over the PSU slot.

Install the DC PSU in the SRX4300

To install a DC PSU (see Figure 4):

  1. Attach the ESD grounding strap to your bare wrist, and connect the strap to the ESD point on the chassis.
  2. Switch off the circuit breaker on the panel board that services the DC circuit. Tape the handle of the circuit breaker in the OFF position. 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 removal process.
  3. If the PSU slot has a cover panel on it, remove the cover panel. Save the cover panel for subsequent use.
  4. Taking care not to touch the terminals, 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 SRX4300. Slide the PSU straight into the chassis until the PSU is fully seated in the chassis slot. Ensure that the PSU faceplate is flush with the adjacent PSU faceplate.
    Figure 4: Install an SRX4300 DC PSU Install an SRX4300 DC PSU
  6. Tighten the captive screws on the lower edge of the PSU faceplate.
  7. Connect the power cables (see Connect SRX4300 to Power).