Nortel Networks M3110 - Manual (Page 427)

Appendix C: Meridian Modular Telephones add-on modules installation Page 427 of 504
Telephones and Consoles Description, Installation, and Operation
be added or replaced. Procedure 78 explains how to install the Data Option
for the M2317 telephone.
Procedure 78
Installing the M2317 data option
1 Remove the handset, and place the telephone upside down on a level
workplace (a desktop, for example).
2 Disconnect all cords from the telephone.
3 Loosen and remove five screws in the base of the telephone, lifting the
base upward.
4 If the telephone is not equipped with the ADO, proceed with step 5.
If the telephone is equipped with a defective ADO, carefully disconnect
the ribbon cable connector from the header connector in the digital printed
circuit board. Loosen and remove the two self-tapping screws that fasten
the ADO to the telephone base and remove the defective ADO. Proceed
with step 6. See Figure 84 on
page 429 .
5 Remove the breakout section in the rear of the telephone base by tapping
it with the handle of a small screwdriver.
6 Place the black plastic connector shroud over the RS-232-C interface
connector.
Note: It is not possible to install the shroud after the board has been
inserted in the telephone base.
7 Tip the circuit board up and insert it, connector end first, under the tabs in
the base. Position it over the molded locating pins; then lower the board
completely into position in the telephone base. Use the three slotted,
self-tapping screws supplied with the board and install them through the
mounting holes. Tighten the screws.
8 Plug the ribbon cable connector into the header connector, located on the
existing circuit board of the telephone (mounted on the faceplate
assembly). Only one such connector is located on the telephone’s circuit
board. Make sure the connector is snug.
CAUTION WITH ESDS DEVICES
CMOS devices inside the telephone can be damaged
by electrostatic discharge. Before opening any
M2317 telephone, discharge your hands and tools by
touching any grounded metal surface or conductor.