Specifications

Hardware Reference 41
C613-03084-00 REV A
How to log in is described in “How to log in” on page 14.
3. Enable diagnostics mode during start-up.
During the switch start-up process, at the prompt:
Force EPROM download (Y)?
press [Ctrl/D] on the terminal to enter diagnostics mode. A banner page is
displayed on the terminal (see Figure 1-16 on page 41). Use this to check
that the terminal is correctly connected.
Warning If you perform a full flash test or erase flash you will delete all
configuration and release files. Make sure you know how to reload these files
before you erase flash or perform a flash test.
Figure 1-16: AT-9900 Series diagnostics banner page
Run a diagnostic program
To run a diagnostic program, enter the corresponding letter or number (or key).
There are several sub-menus to cover all the available options. The control keys
for diagnostic operations are listed below.
A reasonable understanding of the system’s structure is needed to operate
diagnostics and interpret the results.
To restore the switch to normal operation, use a small diameter pin to operate
the recessed Reset button on the front panel of the switch, or press “0” (zero) to
restart.
* * * Diagnostic Mode * * *
version: 16-Mar-1998
Main Menu:
0. Restart
1. Full RAM test
2. ROM checksum test
5. Battery backed RAM test
Enter selection ==>
Table 1-14: Basic commands for running the diagnostics
Key Function
Q Quits any running tests and displays the banner page.
S Prints a summary of test results so far.