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Appendix C: Meridian Modular Telephones add-on modules installation Page 421 of 504
Telephones and Consoles Description, Installation, and Operation
6 Remove the interface cable from the telephone by pressing down on the
locking tab. If equipped, remove the interface cable from the first Key
Expansion Module (closest to the telephone).
Installing the Key Expansion Module(s)
7 If the telephone is not yet equipped with the power supply board, install
the Power Board (see Procedure 71 on page 397).
8 Align the bottom of the Key Expansion Module(s) to the bottom of the
telephone (see Figure 82 on page 422).
9 Snap the ribbon cable connector into the bottom interface jack on the Key
Expansion Module.
Note: Use the cable supplied with the module. This is a special cable
required for EMI compliance.
Snap the other end of the ribbon cable into the interface jack in the
telephone (left side). Gather the excess cable in the base of the Key
Expansion Module.
10 To add a second Key Expansion Module, snap a second ribbon cable
connector into the bottom interface jack on the second Key Expansion
Module. Snap the other end of the ribbon cable into the top interface jack
on the first Key Expansion Module (see Figure 82 on page 422). Gather
the excess cable in the base of the second Key Expansion Module.
11 If the telephone is equipped with an MPDA or MCA, reconnect the data
cable to the base telephone jack. Make sure the MPDA or MCA cable
(and interface cable) do not get pinched between the base and footstand.
12 Secure the footstand to the Key Expansion Module(s) and telephone by
placing the tabs of the footstand into the slots provided on the base of the
Key Expansion Module and telephone and pressing down. Make sure the
footstand is firmly seated on the base.
Note: Use the cable supplied with the module. This is a special cable
required for EMI compliance. Newer versions of the Key Expansion
Module use a longer modified cable than was used on earlier versions.
Ensure that the ribbon cable(s) are not pinched between the footstand
and mounting posts.