### Running PortServer II Diagnostics

Use one of the following 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.

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

#### Video Display Diagnostics Procedure

1. Connected a terminal to port 1 and configured the terminal for VT100 emulation, 9600 baud, 8 data bits, 1 stop bit, and no parity.

   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. Turn the power switch on the PortServer off and then back on.
3. When PO appears on the PortServer front panel LED display, press V on the terminal keyboard to enter diagnostic mode.

   A display similar to the following should appear.

   `Digi International Inc. PortServer II
   Ethernet address....12:34:56:78:9A:BC
   ROM revision: 91-398 Rev D
   ROM startup (cold boot)
   Instruction cache size: 0x00001000
   Data cache size: 0x00000800
   RAM size: 0x00200000
   CPU test............passed
   Watchdog test.......passed
   ROM checksum test...passed
   Flash RAM test......passed
   Simple RAM test............0xA00010000xA01F0010 passed
   Complex RAM test............0xA00010000xA0002000 passed
   Timer test..........passed
   RT clock+RAM test...passed
   Ethernet internal...passed
   Ethernet external...passed
   Test EBI 0 UART08..15 devices passed
   EBI 1...............none
   EBI 2...............none
   EBI 3...............none`

   Press "?" for diagnostics menu or carriage return to continue booting

4. Press ? to display the Diagnostics Menu.

   The Diagnostic Menu should appear:

   `DIAGNOSTICS MENU---
   A = All tests (except 9)
   1 = Front panel light test
   2 = RAM test
   3 = Timer and real-time clock test
   4 = EBI internal loopback test
   5 = EBI external loopback test
   6 = Ethernet internal loopback test
   7 = Ethernet external loopback test
   8 = Flash RAM test
   9 = Watchdog test
   C = Configure boot
   T = Set date & time
   Ethernet address: 12:34:56:78:9A:BC
   B = Reboot`

5. To start a test, press the appropriate test number. See PortServer II Diagnostic Tests Descriptions for details on each test.
6. In the event of a diagnostic test failure, first verify that you are running the test correctly, then contact Digi Technical Support.
7. 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. When PO appears in the alphanumeric display, press either the left (<) or right (>) pushbutton on the front panel to enter diagnostic mode.
3. Use the right pushbutton (>) to cycle through the tests until the desired test number is displayed in the PortServer front panel LED display.

   These are the tests:

   A = All tests (except 9)
   1 = Front panel light test
   2 = RAM test
   3 = Timer and real-time clock test
   4 = EBI internal loopback test
   5 = EBI external loopback test
   6 = Ethernet internal loopback test
   7 = Ethernet external loopback test
   8 = Flash RAM test
   9 = Watchdog test
   C = Configure boot
   T = Set date & time

4. Press the left pushbutton (<) to start the test. See PortServer II Diagnostic Tests Descriptions for information on individual tests.
   The test will continue until an error is detected or until you stop it.
5. To stop a test, press the left pushbutton (<). If a test passes, a P plus the test number will be displayed in the front panel LED display (example: P3). If it fails, F plus the test number will be displayed (example: F3).
6. In the event of a diagnostic test failure, first verify that you are running the test correctly, then contact Digi Technical Support.
7. Choose Back to return to and continue with the Master Troubleshooting Process.