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Installing MX2000 Router AC Power Supply Modules

Before you install a PSM, be aware of the following:

Note:

The AC PSM is hot-swappable when a minimum number of PSMs installed and operational.

Warning:

The AC PSMs have no circuit breakers that can physically disconnect AC current from the router. After AC feeds have been connected to the PDM, the AC voltage is always present on the power midplane and is distributed to the PSM connectors on the power midplane.

CAUTION:

To maintain proper cooling and prevent thermal shutdown of the operating PSM, each PSM slot must contain either a PSM or a blank panel. If you remove a PSM, you must install a replacement PSM or a blank panel shortly after the removal.

Note:

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

To install an AC PSM (see Figure 1,Figure 2, or Figure 3:

  1. With one PSM installed and operational, install an additional PSM with the power supply switch in the off (O), or in the on (|) position.
    Warning:

    If there is only one PSM installed and operational, the power supply switch must be placed in the off (O) position.

  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. While grasping the handle on the PSM faceplate with one hand, use your other hand to guide the power supply module into the chassis.
  4. Tighten the captive screws on the PSM faceplate.
  5. Turn on the power switch to the on (|) position.
  6. Verify that the PWR OK LED is lit steadily green.
Figure 1: Installing an MX2020 Router AC Power Supply ModuleInstalling an MX2020 Router AC Power Supply Module
Figure 2: Installing an MX2010 Router AC Power Supply ModuleInstalling an MX2010 Router AC Power Supply Module
Figure 3: Installing an MX2008 Router AC Power Supply ModuleInstalling an MX2008 Router AC Power Supply Module