### Running PortServer Diagnostics

Use one of these procedures to perform hardware diagnostic tests on a PortServer. In the event of a diagnostic test failure, first verify that you are running the test correctly, then contact Digi Technical Support.

For a description of each individual diagnostic test in the following procedures, see PortServer Diagnostic Test Descriptions.

There are two modes of user diagnostics available for troubleshooting the PortServer; video display mode and front panel mode.

#### Video Display Diagnostics Procedure

1. Connect a terminal (or PC with terminal emulation software) to port 1 of the PortServer.

   Note: Ensure that your terminal will send the v character when the DTR (Data Terminal Ready) and RTS (Request To Send) signals on the serial port are low (inactive). If you encounter a problem, use a 3-wire connection to the terminal.

2. Configure the terminal for 9600 baud, 8 data bits, 1 stop bit, and no parity.
3. Turn the power switch on the PortServer off and then back on.
4. Before the POST diagnostic tests finish, enter a "v" from the terminal attached to port 1.

   A startup screen should appear. The screen displays test information, and waits for user input. There are eight tests that can be selected.

5. Follow the screen menu and prompts to start and stop each test
6. Choose Back to return to and continue with the Master Troubleshooting Process.

#### Front Panel Display Diagnostics Procedure

1. Turn the power switch on the PortServer off and then back on.
2. Before the POST diagnostic tests finish, press either arrow pushbutton on the front panel of the PortServer.

   At this time, all of the lights (LEDs) go OFF, the left 7-segment display is blank, and the right 7-segment display reads "1." The right decimal point blinks at a 1 second rate. At this point, Test 1 - Panel Light Test is selected.

3. To select a test, press the right pushbutton.

   The right LED will cycle through the possible test numbers.

4. Once the desired test has been selected, press the left pushbutton to start the test.

   The left decimal point will light to indicate the test has started and the appropriate test information will begin updating via the front panel indicators.

   The selected test will continue to cycle until an error is detected or until you stop the test by pressing the pushbutton. Failures accumulate and count up in the 10 digit LED display.

5. To stop a test, press and hold the left arrow button and wait for the left decimal point to go OFF. At this point, release the pushbutton.

   The test should stop. At this point, the left alphanumeric display will display either a "P" or an "F" for pass or fail respectively. The right display will show the test number that was just executed. "P3" indicates that test 3 has passed, while "F3" indicates that the test failed.

   Choose Back to return to and continue with the Master Troubleshooting Process.