GAI-Tronics 12520-013 Round Black Single-Pole Push-Button Assembly Replacement Kit for 200 and 300 Series Telephones - Manual (Page 2)

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 2 of 4
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4. Place the front cover assembly face down on a flat surface.
5. Use the wire cutters to snip the tie wrap that is securing the push-button assembly cable to the other
wires.
6. Unplug the push-button assembly cable connector from the PCBA. Be sure to note the location of
the connection for re-assembly.
7. Remove #4-40 screws securing PCBA to standoffs using #1 Phillips screwdriver. Pull the PCBA
away.
8. Using the appropriate screwdriver, loosen the anti-rotation screw on the mounting nut.
See Figure 1.
9. Remove and discard the mounting nut, the mounting ring, and the push-button assembly.
Figure 1. Push-Button Switch Assembly, Exploded View