Replacing The Iodu/C In An Option 51C - Nortel Meridian 1 Hardware Replacement Manual

20 In the inactive Core, perform the following steps in uninterrupted
sequence:
a.
b.
Within 60 seconds, the LCD will display the following messages, confirming
the process.
RUNNING ROM OS
ENTERING CP VOTE
An "HWI534" message from the CPSI or SDI port indicates the start of memory
synchronization. Within 10 minutes, an HWI533 message on the inactive Core
CPSI or SDI TTY indicates the memory synchronization is taking place. Wait
until the memory synchronization is complete.
21 Switch the NORM/MAINT switch on the active CP card to NORM.
22 Synchronize the disk drives:
LD 137
SYNC
****
Note: Synchronization may take up to 50 minutes.

Replacing the IODU/C in an Option 51C

1 Perform a data dump in LD 43 (if possible).
2 Set the ENB/DIS switch on the faulty IODU/C to DIS.
3 Unhook the locking devices and remove the IODU/C.
4 Remove the round 1/2" diameter IODU/C Security Device from the
black round Security Device holder on the top right corner of the
IODU/C card being replaced.
5 Put the IODU/C being replaced into a static bag and box.
6 With the Nortel side facing upward, slide the Security Device between
the security device holder and the holder clip in the new IODU/C card.
Do not bend the clip more than necessary when inserting the Security
Device. Ensure that the Security Device is securely in place.
7 Insert the new IODU/C into the following slots:
press and release the MAN RST button
when SYS700 messages appear on CP LCD display, set the
MAINT/NORM switch to NORM.
to load the program
to synchronize the drives
to exit the program
Replacing equipment
Hardware Replacement
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