Nortel DMS-10 Series Installation, Operation And Maintenance Manual page 599

Procedure 6-39
56K Interface PCA replacement (NT6M94AA)
Step Description
Note: This will create an alarm:
ONLY MODE NON-REDUNDANT
21
Enter the following commands to write the value 00 in the DRAM memory address 2204
for the off-line TEC/DSI PCAs:
>DOS S TECMAINT MEMWRITE 1 2204 00 (cr)
>DOS S TECMAINT MEMWRITE 2 2204 00 (cr)
22
Remove power from the standby chassis (A or B; the one with the suspected fault) by
operation of the +8 V dc red rocker switch on the power supply.
23
Remove the suspected faulty PCA.
24
Replacement PCA option settings must be set to match the PCA being removed, if
present, prior to installation.
CAUTION
Failure to set-up options correctly may cause an AMA loss.
25
Insert the spare PCA in the vacated card slot, making sure it is fully seated.
26
Put faulty pack in the empty electrostatic bag.
27
Apply power to the BMC chassis by operation of the +8 V dc red rocker switch, reversing
step 7.
Wait for start-up activity to end and the message, Software Loaded or S/W Loaded to be
displayed.
28
To clear any alarms on the standby processor, enter at the maintenance terminal:
>DOS S RSERR 00 (cr)
Alarms will clear on the standby processor if there are no faults.
BMC II BISYNC Operation, Administration, and Maintenance Guide BMCB001 and up
Section 060-INDP-610 Maintenance Procedures Guide 6-161
(Sheet 2 of 4)