LiftMaster 61LM Owners Manual - Page 150
Replacement Instructions
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REPLACEMENT INSTRUCTIONS for transmitters pictured below RECEIVER If you have a transmitter as pictured in "Figure B" above, follow these steps to match all transmitters and receivers for correct operation. 1. Figures B&C Code switches numbered 10, 11 and 12 must be set to the off position, or jumper wires 10, 11 and 12 must be cut in the original transmitter and receiver. 2. Figure A To match the code in transmitters having 3 position (+, 0,-) code switches, the "+" code equals "on" (jumper wire present) and "0" code equals "off" (no jumper present). NOTE: THE "-" (MINUS) POSITION IS NOT USED. 2 POSITION ON/OFF Older style transmitters (used in Fig. B and C above) 3 POSITION +/0/New style transmitters (used in Fig. A above) Extra switches must be set in the OFF position 114A1316B ©1991, The Chamberlain Group, Inc. All rights reserved DO Not Use MINUS Position Printed in Mexico