Power-Up Self-Test - Paradyne 3172 Operator's Manual

Power-Up Self-Test

After you connect the E1 DSU/CSU to a power source,
the unit performs the power-up self-test to ensure that it is
in good working order. The E1 DSU/CSU performs this
test on itself upon power-up or after a device reset unless
it has been disabled by the Self-Test configuration option
(see Appendix C, Configuration Options).
The self-test includes a basic processor test, a limited
memory test, a code checksum test, and basic verification
tests of the internal components. The front panel LCD
displays the progress and pass/fail status of these
power-up tests.
The power-up self-test consists of the following steps:
1. Once the E1 DSU/CSU is plugged in, the In
Progress screen appears and the Fail LED blinks
ON and Off continuously.
Self-Test:
In Progress
F1
2. All the LEDs then start to flash simultaneously in
the pattern twice ON, then Off. Then, the LCD
begins to flash characters and numbers in the same
pattern, alternating with the flashing LEDs.
3. If the self-test is successful, the Passed screen
appears for one second, the Fail LED turns Off
and the OK LED lights.
Self-Test:
Passed
F1
3170-A2-GB20-10
F3
F2
F2 F3
March 1996
If the self-test fails, the Failed screen appears for
five seconds. The Fail LED lights, and an
eight-digit failure code (nnnnnnnn) is displayed
for use by AT&T Paradyne personnel to determine
the cause of the self-test failure. The E1
DSU/CSU continues to try to operate. If you are in
doubt about the results of the self-test, use the
Self-Test Health command to display the status of
this test (see the Self-Test Health section in
Chapter 4, Maintenance).
Self-Test:
Failed nnnnnnnn
F1 F2
4. The top-level menu screen appears.
DSU E1 CEPT
Stat Test
F1 F2
Installation
F3
Cnfig
F3
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