Remove all jumpers between E & - in multi- master or 3-wire system. Test master by taking wires off # terminals, then momentarily shorting # terminal to ( neg). If more than one light comes on, internal damage has occured, and the master must be repaired. 8. All Call doesn't work. 8. All Call is an optional feature requiring a BG-10C and PS-12F for every 10-11 stations in the system. Make sure adaptors are wired properly. See diagram #3e. 9. All call doesn't work, but adaptors are included. 9. C

Master stations are available in 20-and 40-station sizes, with or without a handset. For greater capacity, include a 20- or 40-station add-on selector. Any "LE-" or "LS-" series sub station can be used. All Call and/or Background Music are optional features requiring additional equipment (BG-10C, PS-12F). 1 NAMES & FEATURES LAF-20CA (pictured) NAMES & FUNCTIONS: 1. Handset 2. Power indicator 3. Microphone 4. Speaker 5. Terminal Block 6. OFF button 7. Selector button 8. Power switch 9. Voice volu

· Wiring between masters must be a multi-conductor cable. If more than one cable is used to connect masters, the "E", "C", and number terminal wires must be in the same jacketed cable. If necessary, run multiple "E" wires, one in each cable. Wiring Method: · Run intercom cables at least 20" away from all AC wiring, fluorescent lights, dimmer switches, and other electrical or electronic devices. Wiring can cross AC wires at 90 degrees. · Sub stations may be homerun to the nearest master station,

3. Depress station button with lit LED. 4. Press TALK button to speak, and release to listen. With handset model (LAF-CA), speak to sub station privately with voice actuated (VOX) handset. TALK button is also functional on LAF-CA models. 5. Press OFF button to the left of the station selector button when the call is concluded. • ss Calling a sub or master station: 1. Depress station number of the location you wish to call. 2. Press TALK to speak, and release to hear reply, or use handset. 3. If