Nortel Meridian 1 Hardware Replacement Manual page 86

Page 86 of 250 Replacing equipment
553-3001-520 Standard 17.00 January 2002
Return the system to redundant mode
To place the system back in the redundant (normal) mode with automatic
switchover capability, perform the following steps in uninterrupted sequence
on the inactive Core:
— Press and release the MAN RST button on the CP card in the
inactive Core. When SYS700 messages appear on the inactive CP
LCD display, set the inactive CP NORM/MAINT switch to NORM.
— An HWI534 message on the active Core will be displayed indicating
that memory synchronization has begun. An HWI533 message on
the active Core indicates that memory synchronization is complete.
— In the inactive Core, enable the NT6D65 CNI cards by setting the
ENB/DIS faceplate switches to ENB.
— Place the active CP NORM/MAINT faceplate switch to NORM.
Completing the upgrade
1 Perform a redundancy sanity test using the following sequence:
LD 135
STAT CNI
STAT CPU
TEST CNI core slot Test each inactive CNI card.
Note: Testing the CP and CNI cards and synchronizing memory takes
up to 20 minutes for each test. When the CP test is complete, the
memories are automatically synchronized.
2 Switch Cores, and test the other side.
TEST CPU
SCPU
TEST CNI core slot Test each inactive CNI card.
Note: Testing the CP cards can take up to 20 minutes for each test.
When the test is complete, the memories are automatically
synchronized.
3 Clear the display, and minor alarms on both Cores.
CDSP
CMAJ
CMIN ALL
Get status of CNI cards.
Get status of CPU and memories.
Test the standby (inactive) Core.
Switch Cores.
Clear the displays on the Cores.
Clear major alarm.
Clear minor alarm.