Nortel Meridian 1 Replacement Manual page 69

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12 Test the replacement IOP/CMDU:
LD 137
DIS IOP
TEST IOP
ENL IOP
TEST CMDU n
If there is a problem, a CIOD system message is generated.
13 To place the system back in the redundant (normal) mode with automatic
switchover capability. Perform the following three steps in uninterrupted
sequence on the inactive Core (the Core with the replaced IOP/CMDU):
a Press and hold down the MAN RST button on the CP card of the
inactive Core.
b While holding down the MAN RST button, set the NORM/MAINT
switch on the same CP card to NORM.
c Release the MAN RST button.
After several minutes, an "HWI533" message is issued by the active
Core indicating that the inactive Core memory is being synchronized
with the active Core memory.
14 Set the ENB/DIS switch on all CNI cards in the inactive Core to ENB.
15 Synchronize the disk drives of the two Cores:
LD 137
STAT
SYNC
****
Replacing equipment
to confirm quit
to reboot the system
to load the program
to disable the IOP part of the IOP/CMDU
to test the operation of the IOP part of the
IOP/CMDU
to enable the IOP part of the IOP/CMDU
to test the operation of the CMDU part of the
IOP/CMDU where n is the inactive Core
IOP/CMDU
to load the program
to get status of both IOP/CMDUs
to synchronize the drives
to exit the program
Page 69 of 362
Hardware replacement