Nortel 1000 Hardware Installation Manual page 45

Install the new 512 Mbyte DIMM boards in the Application Gateway.
3
Refer to Figure 19 on page
Note 1: Use only DIMM boards contained in the NTDU80 Application
Gateway Memory Upgrade Kit. Nortel does not recommend the use of
other memory modules.
Note 2: Do not mix the new 512 Mbyte DIMM boards with the original
128 Mbyte DIMM boards. Make sure that all the original boards have
been removed during step 2 on
Align the key slots (A) in the edge of the DIMM board with the
a.
corresponding slots in the mating board socket (B). (The connectors
are keyed to mate in one direction only.)
Firmly press the DIMM board straight down and all the way into the
b.
Application Gateway board socket.
Ensure the DIMM board is locked in by pressing the levers (C) on each
c.
end of the Application Gateway board socket into the mating notches
(D) on each edge of the DIMM board.
38.
CAUTION
Use extreme care when installing a
DIMM board. Applying too much
pressure or misaligning the board in
the socket can damage the sockets or
DIMM board edge connectors. DIMM
board edge connectors are keyed and
can be inserted only one way.
To reduce the risk of damaging a
connector, install the DIMM boards
starting with the back socket on the
Application Gateway board and move
toward the front of the Application
Gateway board.
page 35.
Application Gateway Administration Guide
Appendix A Upgrading Memory
Upgrading the Memory
37