To locate and handle power failures, follow the procedure as described below.

Flowchart

The flowchart is shown in the following figure.

Power Failure

Procedure

  1. Measure the input voltage. Use a multimeter to measure the input voltage, and assess whether the input voltage falls outside the working voltage range.
  2. Connect and disconnect the power adapter. Connect and disconnect the power adapter and the power cable to exclude loose connections.
  3. Cross-check the power adapter and the Smart Access Gateway (SAG) device. Connect the current power adapter to a functioning SAG device, or connect a functioning power adapter to the current SAG device.
    • If power failures occur after you connect the current power adapter to a functioning SAG device, repair the current power adapter.
    • If power failures occur after you connect a functioning power adapter to the current SAG device, submit a ticket to repair the current SAG device.