Replacing equipment Page 109 of 250Hardware Replacement20 In the inactive Core, perform the following steps in uninterruptedsequence:a. press and release the MAN RST buttonb. when SYS700 messages appear on CP LCD display, set theMAINT/NORM switch to NORM.Within 60 seconds, the LCD will display the following messages, confirmingthe process.RUNNING ROM OSENTERING CP VOTEAn “HWI534” message from the CPSI or SDI port indicates the start of memorysynchronization. Within 10 minutes, an HWI533 message on the inactive CoreCPSI or SDI TTY indicates the memory synchronization is taking place. Waituntil the memory synchronization is complete.21 Switch the NORM/MAINT switch on the active CP card to NORM.22 Synchronize the disk drives:Note: Synchronization may take up to 50 minutes.Replacing the IODU/C in an Option 51C1 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 theblack round Security Device holder on the top right corner of theIODU/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 betweenthe security device holder and the holder clip in the new IODU/C card.Do not bend the clip more than necessary when inserting the SecurityDevice. Ensure that the Security Device is securely in place.7 Insert the new IODU/C into the following slots:LD 137 to load the programSYNC to synchronize the drives**** to exit the program
