Replacing equipment Page 131 of 362Hardware replacementCheck the status of the system CPUs, the disk drives synchronization, andperform data dump as preliminary steps in the replacement procedure:1 Identify the faulty IOP card in the system and check if the faulty card isin the active or inactive Core by checking the status of both CPU:If CPU 0 is active and the faulty IOP is associated with inactive CPU 1,proceed with step 2. If CPU 0 is active and the faulty IOP is associatedwith CPU 0, perform switchover to make CPU1 the active CPU. Performswitchover and check the CPU status:Verify that the switchover to CPU1 was successful and that CPU 0 is nowinactive.2 Verify that disk drives in two Cores are synchronized:If disk drives are synchronized, proceed with step 3. If they are notsynchronized, execute the SYNC command:3 Perform equipment data dumb from the active Core (with a known goodIOP card):LD 135 to load the programSTAT CPU to check CPUs statusSCPU to perform switchover to CPU 1STAT CPU to check CPUs status**** to exit the programLD 137 to load the programSTAT to get the status of the two disk drivesSYNC to synchronize the drives**** to exit the programLD 43 load LD 43EDD execute datadump and wait until“DATADUMP COMPLETE” and“DATABASE BACKUP COMPLETE” aredisplayed before exiting the program.**** exit LD 43
