Nortel DMS-10 Series Installation, Operation And Maintenance Manual page 475

Procedure 6-10
Boot Recovery
Step Description
If the processor does NOT boot the program file, replace the EPROM PCA using the
procedure in the Hardware Replacement subsection and return to this point.
If replacing the EPROM PCA does NOT allow the processor to boot the program file,
replace the CPU PCA using the procedure in the Hardware Replacement subsection and
return to this point.
If replacing the EPROM and CPU PCAs does NOT allow the processor to boot the
program file, replace the DRAM PCA using the procedure in the Hardware Replacement
subsection and return to this point.
If replacing all of the above PCAs does NOT allow the processor to boot the program file,
call your next level of support.
110
After approximately one minute, a S/W LOADED message should be seen at the terminal,
indicating the processor has loaded the software file name. If there are any other failure
messages, troubleshoot using the appropriate procedure(s).
111
Enter the following command to check processor integrity:
>ERRMAP ALARMS (cr)
If there are no alarms, enter the following command to test the newly loaded processor:
>DOS S TEST (cr)
After the PGM TEST PASSED message is observed all tests are complete.
112
Switch to the newly loaded processor by depressing the O/P rocker switch to P. Then,
depress the A/B rocker switch to match the newly loaded processor and turn the key
switch to the right and release. BMC should respond with appropriate processor switch
messages.
113
Power down the new standby processor by depressing the rocker switch on the power
supply.
114
After 15 seconds, activate the power supply rocker switch by pressing it toward I.
115
User should observe the LED display on the CPU PCA is a lower case 'r.'. When this
display changes to any other character, there should be some steady activity on the disk
drive LED followed by a terminal message STBY BOOT IN PROC.
BMC II BISYNC Operation, Administration, and Maintenance Guide BMCB001 and up
Section 060-INDP-610 Maintenance Procedures Guide 6-37
Sheet 5 of 6