Specifications

Hardware Reference 31
C613-03064-00 REV E
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 will
be displayed on the terminal (Figure 10 on page 31). This can be used to
check that the terminal is correctly connected.
Figure 10: AT-8700XL Series diagnostics banner page.
To run a diagnostic program, enter the corresponding letter or number (or key).
There are several sub-menus to cover all the available options. Table 16 on
page 26 lists the control keys for diagnostic operations.
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 pen or pencil to operate the
recessed reset button on the front panel, or press “0” (zero) to restart.
Replacing Boot EPROMs
AT-8700XL Series switches have two 512 kByte boot EPROMs. The boot
EPROMs contain bootstrap code, which loads the main code from a software
release file in FLASH memory. In rare circumstances the boot EPROM(s) may
need to be changed.
Boot EPROMs should not need to be replaced, except in rare circumstances.
Contact your Authorised Allied Telesis distributor or reseller before replacing
any boot EPROMs.
* * * Diagnostic Mode * * *
version 25-Jul-02
Main Menu:
0. Restart
1. Full RAM test
2. ROM checksum test
3. Full FLASH test
4. Totally Erase FLASH
5. Battery backed RAM test
Enter selection ==>
Table 17: 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.