GAI-Tronics 12761-001 Kit (9000 Series Cradle Assembly) - Manual (Page 2)

Pub. 42003-073
M ODEL 12761-001 H ANDSET C RADLE /S ENSOR A SSEMBLY R EPLACEMENT K IT Page: 2 of 2
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8. Locate the 2 red wires that feed from the reed switch sensor through the opening on the PCBA and
plug them into the board. Unplug these red wires from E5 and E6 on the PCBA.
9. Unscrew the 5 standoffs securing the PCBA to the front panel.
10. Flip the PCBA over and feed the unsecured end of the red wires through the opening in the board.
11. Use a Phillips screwdriver to remove the 2 screws securing the handset cradle to the rear of the front
panel.
12. Pull the handset cradle sensor assembly through the front panel of the unit, and discard it.
Installing the New Assembly
1. Feed the 2 red wires on the new assembly through to the rear of the front panel, making sure that the
handset cradle is positioned such that the wider opening is at the top of the cradle.
2. Secure the assembly using the new screws.
3. Feed the red wires through the upper circular opening in the PCBA. Be sure you position the PCBA
so the ribbon cable connectors in the front and rear portions of the unit align properly.
4. Secure the PCBA with the 5 standoffs, from Step 9 in the previous procedure.
5. Plug the red wires onto the PCBA at E5 and E6.
6. Feed the party-line selector switch assembly through to the front of the unit, making sure that the
cable faces to the right. Plug the connector at the end of the wires into PCBA at J4.
7. Access the front panel of the unit. Lay the internal tooth lockwasher and then the hex nut over the
switch assembly. Secure the switch assembly by tightening the hex nut with a pair of needle-nose
pliers or a wrench.
8. Place the party-line selector knob over the switch at the original party-line position.
9. Using needle-nose pliers or a nut driver, secure the knob by tightening the hex nut.
10. Put the cap back in the center of the knob.
11. Feed the ribbon cable assembly through the opening in the shield. Align the holes in the 4 corners
and center of the shield with 5 standoffs on the PCBA.
12. Use a Phillips screwdriver to secure the shield with the 5 screws (from Step 3 in the previous
procedure).
13. Reattach the ribbon cable to the back of the unit.
14. Close the unit, and tighten the front panel with the 4 captive screws.