Nortel Meridian SL-1 Supplementary Manual page 140

11-4 Upgrading from SL-1 SN to Option 21
Shelf upgrades to Meridian 1 553-3001-253
• Install the new CE shelf designation strip (P0674974) over the
existing strip along the bottom front of the CE shelf.
• Ensure that the option switches and plugs on the circuit packs are
properly set. Refer to 553-3001-211.
• Install the QPC940 ROM daughter board on the component side
of the QPC687 circuit pack.
10 Make sure that the correct QMM42 Data Cartridge is installed on the
connector located on the component side of the QPC742 FDI circuit
pack and that switches 1 and 5 are set to on.
Note: The software version and ID number indicated on the data
cartridge must match the software version and ID number indicated on
the floppy disks.
11 Insert the circuit packs in their assigned slots in the new CE shelf
(Figure 11-2).
12 Insert the NT8D68AA FDU in any available two consecutive slots.
13 Reconnect the tagged cables that were previously disconnected to the
appropriate connectors on the faceplates of the circuit packs on the
new CE shelf.
14 Set all ENB/DIS switches on the faceplates of circuit packs to ENB.
• Set the MAINT/NORM switch on the front of the QPC687 circuit
to NORM.
• Set the CAB INP circuit breaker on the QUX19 unit to ON.
15 Insert the floppy disks into disk drives. A system reload (SYSLOAD)
should occur. Wait for the SYSLOAD to be completed.
16 Reestablish normal service on the system as soon as it is determined
that trunk connections can be made to an attendant console or other
suitable telephone. To restore normal service, set the line transfer
switch on the QUAA3 power unit to OFF or 0.
• Using the appropriate overlay programs, obtain printouts of all TN
assignments and system features and compare with the printouts
obtained before converting.