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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 you wish to send a pre-announce tone to the called station, press the TALK and ALL CALL buttons simultaneously. A mono-electronic tone will be heard at the called station. 4. Press OFF button to the left of the station selector button when the call is concluded. • ss Receiving a call from another master station: 1. When one master calls another master, no station LEDs light up, and the responding master answers back hands free. The calling master uses the TALK button to speak. 2. The calling master can use the handset, but the responding master must speak hands free. 3. The "occupied lamp" will be on while the initiating master has a station selected. 4. The responding master should not press any buttons to respond to another master's call. • ss Initiating an ALL CALL from the master station, and features of the BG-10C: 1. Press and hold the black ALL CALL button, then make an announcement. 2. To conclude, simply release the button. 3. All Call is a one way outgoing announcement only. If a station wishes to respond, they must press their call button, and the master station can then answer the call as described above. 4. If background music is included, the music will be heard on the system while it is not occupied. When any master station selects a station to place or answer a call, the music will be muted throughout the entire system. 5. If a door station is wired to the BG-10C to produce a chime, a 4-stroke chime will be heard through the stations selected to receive the chime (switches under plate on BG-10C). A call from a door station can only be answered by a master station. SPECIFICATIONS: Power Source: 12V DC at master. Use PS-12C, or PS-12F when BG-10C(s) are included (1 PS-12F per BG-10C) Communication Output: 800mW at 20 ohms (receive); 500mW at 20 ohms (transmit) Communication: Push-to-talk, release-to-listen (TALK button), or VOX handset at master. Hands free at sub station. Calling: Master to sub or other master: By voice (TALK) or tone (TALK & ALL CALL simult.) Sub to master: Call button on sub activates tone and LED at master, remaining lit for approximately 20 seconds. Wiring: 2 conductors homerun to sub station (1-Master system only), 3-conductor, or loop multi- conductor with 2 common + 1 individual wire per sub station on wire run. Shielded cable is recommended. Use Aiphone #822202, 2 cond. 22AWG; #821802, 2 cond. 18AWG or #822203, 3 cond. 22AWG; #822206, 6 cond. 22AWG. LAF-C to ea. BG-10C: Aiphone #822220, 20 cond. 22AWG. Wiring Distance: 650' with 22AWG; 1,600' with 18AWG. Dimensions: LAF-20C: 10-1/4" x 13-1/2" x 5-1/2". LAF-20CA: 10-1/4" x 17-3/4" x 5-1/2" (H x W x D) LAF-40C: 10-1/4" x 19-1/2" x 5-1/2". LAF-40CA: 10-1/4" x 23-1/2" x 5-1/2" LA-20AS: 10-1/4" x 7" x 5-1/2". LA-40AS: 10-1/4" x 12-7/8" x 5-1/2". Pg. 6 5 TROUBLESHOOTING GUIDE PROBLEM SOLUTION 1. No call tone or LED when sub calls master. 1. Make sure jumper is installed between E & terminals at the master and all sub stations (in 2wire configuration). 2. Call tone works, but no communication, or2. Same as #1 in 2-wire system. In 3 wire system, 1 & communication works, but no call tone. E are for communication, and 1 & - are for call-in. Check continuity and connection of wires. 3. Call tone is too loud or too quiet. 3. Call tone volume control is located on main PC board under select switch panel (white 3-pos. switch). Level is set to maximum. Move to mid or low position. 4. Master stations cannot call each other. 4. The "C" terminal on the master station means "CALL", and provides master-to-master communication. Make sure the "C" of one master is connected to a designated station # on another master. 5. LED lights don't light up when calling master-to5. Station LEDs only light when a sub station calls. master. Responding master answers hands free, therefore not having to select a station. 6. Occupied light is always on. 6. Make sure all black OFF buttons on master(s) are off (pressed down). Check "R" wire for short to ground. If occupied light remains lit with "R" wire disconnected from master, internal damage has occured, and the unit must be sent in for repair. 7. When subs call in, multiple LEDs light up. 7. Make sure station number wires aren't shorted together. Remove all...

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