Lucent Technologies MERLIN LEGEND Release 5.0 Maintenance And Troubleshooting Manual page 115

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting 555-650-140
Control Unit Problems
Processor Problems
If the installation of system software was unsuccessful, an error code is
displayed and the system may not function. See
Conditions During Forced
Remove the memory card from the interface slot.

Verify that system software has been correctly installed and that

the default system programming is present.
No error condition is displayed on the error/status display.
Restore system programming.

After about 10 minutes, check to see if the RED alarm status LED is lit. If
it is not, the installation was successful. If the LED is lit, check the error
log for the following:
SYS software ROM failure
This indicates a ROM failure and unsuccessful installation.
If the forced installation was performed due to corrupted system
software, it is possible that the backup of system programming might
also be corrupted. Verify that the error condition that required a forced
installation of software is not still present.
Error Conditions During Forced Installation
The error code/status display on the processor module or the maintenance
screen informs you of problems during or after a forced installation. See
4-2 for error codes displayed. Also see the screens following the table for errors
displayed on the maintenance console or PC.
The following error conditions can occur only during or immediately after a
forced installation. Instructions for recovery follow the description of each error
condition.
Installation''.
Table 4-2 and ''Error
Issue 1
June 1997
Page 4-25
Table