Nortel Meridian 1 Replacement Manual page 278

Page 278 of 362
553-3001-520 Standard 16.00 April 2000
Replacing equipment
3 Tag and disconnect the cable to the card you are removing. If the
replacement card is an EMSI card, remove the NT8D80 cable from the
connector on the MDU.
4 Unhook the locking devices on the card; pull it out of the card cage.
5 Remove the screw that secures the QMM42 Data Cartridge. Gently
unplug the cartridge from the connectors on the component side of the
MSI card.
Installing equipment
1 Plug the data cartridge into the connectors on the component side of the
replacement MSI or EMSI card. Install the screw that secures the
cartridge.
2 Set the ENB/DIS switch to DIS on the replacement card.
3 Set option switches on the replacement card the same as on the card you
removed. If there is a vintage change, be sure to check Circuit Card:
Installation and Testing (553-3001-211) for any differences.
Incorrect switch settings on an MSI or EMSI card can cause a system
failure.
4 Insert the replacement card into the vacated slot and hook the locking
devices.
5 Connect the cable to the replacement card. If the replacement card is an
EMSI card, install an NT9D89 cable between the connectors on the
MDU and the EMSI card.
6 Set the ENB/DIS switch to ENB on the replacement card.
7 Switch to the active CPU:
LD 35
SCPU
****
CAUTION