Nortel Meridian 1 Replacement Manual page 134

Page 134 of 362
553-3001-520 Standard 16.00 April 2000
Replacing equipment
12 Test the replacement IOP card and the 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):
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
****
16 Verify CPU redundancy and CNI operation:
LD 135
STAT CPU
STAT CNI
17 Place the active CPU in the normal mode by setting the NORM/MAINT
switch on the CP card to NORM.
to load the program
to disable the IOP card
to test the IOP operation
to enable the IOP
to test the CMDU(s) operation where n is the
inactive Core CMDU
to load the program
to get status of both IOPs and CMDUs
to synchronize the drives
to exit the program
to load the program
to get status of both CPUs
to verify the operation of all CNI cards