Maintaining the TX Matrix Plus Power Supplies

Purpose

For optimum router performance, verify the condition of the TXP-CBs.

Action

• Periodically inspect the site to ensure that both the air intake at the bottom front of the chassis and the exhaust from the power supply faceplates are unobstructed. The power supplies require an unobstructed airflow at both the front and rear of the chassis.
• Periodically inspect the site to ensure that the grounding and power cables connected to the TX Matrix Plus router are securely in place and that there is no moisture accumulating near the TX Matrix Plus router.
• Make sure that the power and grounding cables are arranged so that they do not obstruct access to other TX Matrix Plus components.
• Issue the show chassis environment pem command to verify that the power supplies are operating properly.
• Routinely look at the LEDs on the power supply faceplates. If the PEM OK LEDs are lit, the power supplies are functioning normally.
• Look at the LCD and the red and yellow alarm LEDs on the craft interface. Power supply failure or removal triggers an alarm that causes one or both of the LEDs to light and an error message to appear on the LCD.