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Installation
2-93160-A2-GB22-10 December 1996
Power-Up Self-Test
After you connect the 3160/3164 DSU/CSU to a power
outlet, the power-up self-test is performed to ensure that
the unit is in good working order. The DSU/CSU
performs this test on itself upon power-up or after a device
reset unless it has been disabled by the Self-T
est
configuration option (see Appendix C,
Configuration
Options).
The 3161 DSU/CSU performs the same power-up
self-test except that progress is not reported on the SDCP
during the test. However, you can use the Self-T
est Health
command to display the status of the test (see
Self-Test
Health
section in Chapter 3,
Operation
).
The self-test includes a basic CPU test, a limited RAM
test, a code checksum test, and basic verification tests of
its 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 DSU/CSU is plugged in, the In Progress
screen appears and the Fail LED blinks ON and
Off continuously.
F1
Self-Test:
In
P
rogress
F2
F3
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 is turned Off
and the OK LED lights.
F1
Self-Test:
Passed
F2
F3
If the self-test fails, the Failed screen appears for
five seconds. The Fail LED lights. The 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
Self-T
est Health
section in Chapter 3,
Operation).
F1
Self-Test:
Failed nnnnnnnn
F2
F3
4. The
top-level menu screen appears.
F1
DS
U E
SF
Stat Test Cnfig
F2
F3