GAI-Tronics 12504-010 Keypad Replacement Kit for 491-201 Mine Dial Page Telephone - Manual (Page 5)

Pub. 42003-218B
Model 12504-010 Keypad Replacement Kit for Model 491-204 Mine Dial Page Phone Page: 5 of 5
f:\standard ioms - current release\42003 kit manuals\42003-218b.doc
07/09
20. Re-install the 69491-002 PCBA using the two Phillips head screws.
21. Reconnect the four wires from the keypad assembly as follows:
• Connect white wire to terminal 3 of TB2.
• Connect green wire to terminal 4 of TB2.
• Connect red wire to terminal 5 of TB2.
• Connect slate wire to terminal screw E1 on the 69491-002 PCBA.
22. Re-secure the wiring as noted in Step 3 using supplied tie-wraps. Wires MUST be routed and secured
to prevent contact with uninsulated conductors. Refer to Figure 7 as an example.
Figure 7. Tie-Wrap Location Example
23. Check all work, then reconnect both wires to internal battery’s positive terminal. Test keypad for
proper operation.