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 81: Install a DC PSM in an ACX5448 Router
Figure 82: Install a DC PSM in an ACX5448-D or ACX5448-M Router
Figure 83: Connect the DC Power Cables
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