Nortel Meridian 1 Replacement Manual page 81

2 Perform equipment data dump if possible. If the IOP or the CMDU is
faulty, a successful data dump may not be possible:
LD 43
EDD
****
3 Disable the IOP:
LD 137
DIS IOP
4 To remove the faulty IOP and replace the data cartridge from the faulty
IOP to the replacement IOP/CMDU:
a Set the ENB/DIS switch on the faulty IOP to DIS.
b Remove the IOP.
c Remove the screw that secures the QMM42 Data Cartridge. Gently
unplug the cartridge from the connectors on the component side of
the IOP.
d Plug the above QMM42 Data Cartridge into the replacement
IOP/CMDU and install the screw that secures it to the IOP/CMDU.
5 To remove the faulty CMDU:
a If there is a floppy disk in the CMDU you are replacing, remove the
floppy disk.
b Set the power switch on the front of the CMDU, if present, to OFF
(down).
c Wait at least 10 seconds, then unhook the locking devices on the
CMDU and gently pull the unit out of the card cage.
Replacing equipment
load LD 43
execute datadump and wait until
"DATADUMP COMPLETE" and
"DATABASE BACKUP COMPLETE" are
displayed before exiting the program.
exit LD 43
load LD 137
Disable the IOP.
Page 81 of 362
Hardware replacement