GAI-Tronics 12520-013 Round Black Single-Pole Push-Button Assembly Replacement Kit for 200 and 300 Series Telephones - Manual (Page 3)

Pub. 42003-251A
M ODEL 12520-013 R OUND , B LACK , S INGLE -P OLE P USH -B UTTON A SSEMBLY R EPLACEMENT K IT Page 3 of 4
f:\standard ioms - current release\42003 kit manuals\42003-251a.doc
03/12
Installing the New Push-Button Assembly
1. From the front side of the panel, push the new push-button assembly through the hole. See Figure 1.
2. Secure the push-button assembly to the front cover using the mounting ring and the mounting nut.
See Figure 1.
N OTE : Ensure that the O-ring seal is in its proper location, as shown in Figure 1.
3. Tighten the anti-rotation screw on the mounting nut.
4. Use the enclosed tie wrap to secure the push-button assembly cable to the other wires, and attach to
the anchor.
5. Replace the #4-40 screws that secure the PCBA to the standoffs.
6. Plug the push-button assembly cable into the PCBA at the proper location noted earlier.
7. Reconnect the telephone line cord, and strobe wires, if applicable.
8. Align the front cover with the rear enclosure, and use the Model 233-001 Security Screwdriver to
secure four front cover screws (previously saved).
Model 298, 392, 396, and 398 Series Telephones
Removing the Old Push-Button Assembly
1. Use a Model 233-001 Security Screwdriver to remove the six front panel screws. Save the screws for
re-assembly.
2. Lift the front panel assembly away from the back box approximately 6 to 8 inches.
3. Unplug the telephone line cord from the modular block in the back box, and disconnect the strobe
wires, if applicable.
4. Remove the front panel assembly, and place it face down on a flat surface.
5. Use the wire cutters to snip the tie wrap that is securing the push-button assembly cables to the other
wires.
6. Unplug the push-button assembly cable from the PCBA. Be sure to note the location of the
connection for re-assembly.
7. Using the appropriate screwdriver, loosen the anti-rotation screws on the mounting nut.
8. Remove and discard the mounting nut, the mounting ring, and the push-button assembly.