GAI-Tronics 12520-009 and 12520-010 Round Push-Button Assembly Replacement Kit for 300 Series Telephones - Manual (Page 3)

Pub. 42003-238B
M ODELS 12520-009 AND 12520-010 R OUND P USH -B UTTON A SSEMBLY R EPLACEMENT K IT Page: 3 of 4
f:\standard ioms - current release\42003 kit manuals\42003-238b.doc
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Installing New Push-Button Assembly
1. From the front side of the panel, push the new push-button assembly through the hole. See Figure 1
and Figure 2.
2. Secure the push-button assembly to the front cover using the mounting ring and the mounting nut.
See Figure 1 and Figure 2.
N OTE : Ensure that the O-ring seal is in its proper location, as shown in Figure 1 and Figure 2.
3. Tighten the anti-rotation screws 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 392, 396, 397, and 398 Series Telephones
ATTENTION
Installation should be performed by qualified personnel and only in
accordance with the National Electrical Code or applicable local codes.
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.