Digi 90031300 manual Running Diagnostics from the Display Panel

Running Diagnostics from the Display Panel

To run the internal diagnostic programs from the T1 Modem Bank’s front panel, turn the T1 Modem Bank on and wait for the POST (Power On Self Test) to complete. While P1 is displayed on the front panel, press either button on the display panel.

The first thing you should see is the T1 Modem Bank’s node number. This will be displayed in the form xn, where

xis the node number (1n, 2n, and so forth). If you wish to change the node number, press the left push-button repeatedly until the desired node number appears on the display, then press the right push-button to save it in EEPROM. If the new node number is successfully written to EEPROM, Pn will be displayed to indicate a pass condition. If the write operation failed, Fn will be displayed. See “Setting the Node Number” on page 27 for more information about node numbers.

If you do not wish to change the node number at this time, press the right push-button again to proceed to the Line Card test without rewriting the node number.

If you do not wish to change the line card configuration at this time, press the right push-button again to proceed to diagnostic Test 1 without changing the line card configuration.

Pressing the right push-button repeatedly will cycle through all of the test numbers without executing the tests. To execute a test, press the left push-button while the desired test number is displayed. The left decimal point of the 7- segment display will be turned on to indicate that a test is in progress. Table 4 on page 30 shows the possible codes that could appear in the display panel window when a diagnostic test is performed. Note that codes E0 and E2 through E6 indicate a hard failure. This is a system failure; the test will not continue.

Errors are counted on the ten LED indicators. The error count is a binary number, with the LSB (Least Significant Bit) on the left and the MSB (Most Significant Bit) on the right. Note that in tests 2, 4, 5, 6 and 7, when the test is stopped (by pressing the left push-button), the error count is replaced by diagnostic information. Write down the status of the LED indicators so the information is available in case you need to contact Digi Technical Support.

To stop running a test in progress, push the left push-button again. The test will terminate, and the 7-segment display will show the test number preceded by P (pass) or F (fail).

To exit diagnostic test mode and return to the initialized state, cycle the T1 Modem Bank’s power off, then on again.

58 T1 Modem Bank