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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. Check connection of P1, P2, P3 terminals between master and BG-10C's. P1 should read at least 10V DC when All Call button is pressed. Voice is carried on P2, P3 wires. 10. When All Call is made, all station LEDs light up. 10. If single-call sub stations are used, NP-25V capacitors must be installed as shown on diagram #3e. 11. Feedback is heard between intercom stations in11. Intercom stations should not be mounted back-toadjacent rooms. back on a common wall. Separate them by at least two feet, or on separate walls if possible. Adjust voice volume control to eliminate feedback. 12. System has AC hum when listening to another12. Intercom wiring must be at least 20" away from any station from a master station. AC wiring, fluorescent lights dimmer switches, or other AC devices. Cross at 90 degrees when necessary. If shielded wire was used, tie all shields together and ground at one end to an earth ground. If noise persists, isolate source of noise and separate the intercom station and wiring from the source. Pg. 7 6 PRECAUTIONS & WARRANTY CAUTION * Do not connect any AC wires to any terminal on any unit, as fire or unit damage may occur. Connect only specified power source on +, - terminals. * Do not install more or different power sources than specified for the system. * Do not attempt to install or connect wires on LAF-C system while the system's power supply is plugged in. * LAF-C masters and related equipment, unless specified as "weather resistant", are designed for indoor use only. Door stations (LE-D, LE-DA, LE-DL) may be installed outdoors. IMPORTANT * There is no need to disassemble the equipment for installation. Call tone volume and handset vox sensitivity adjustments are inside the master station, and are the only controls to be accessed inside the unit. Do not access the PC boards inside the units unless properly qualified. * Any other manufacturer's products installed with the system (power supply, external signalling device, etc.) are not covered under Aiphone's warranty. * Do not mount LAF-C equipment in the following places, as it may cause the system to malfunction: -High or extreme cold temperature areas: under direct sunlight, near equipment that varies in temperature, in front of air conditioner, inside a refrigerated area, etc. -Places subject to moisture or humidity extremes. -Places subject to environmental conditions, such as dust, oil, chemicals, salt, etc. * LAF-C units are electronic devices, which must not be subjected to water or any other liquid. * Severe weather conditions, such as lightning storms, may cause damage to LAF-C equipment. We recommend that power surge protection be installed to minimize potential component level damage. -Install the SA-1 surge arrestor as shown to protect the power supply from a surge. -Additional SA-1 surge arrestors should be installed on all communication lines (one SA-1 for every two wires connected to master.) See diagram #3a. LAF-C Master + - + - SA-1PS-12C Earth Ground WARRANTY Aiphone warrants its products to be free from defects of material and workmanship under normal use and service for a period of one year after delivery to the ultimate user and will repair free of charge or replace at no charge, should it become defective upon which examination shall disclose to be defective and under warranty. Aiphone reserves unto itself the sole right to make the final decision whether there is a defect in materials and/or workmanship; and whether or not the product is within the warranty. This warranty shall not apply to any Aiphone product that has been subjected to misuse, neglect, accident, or to use in violation of instructions furnished, nor extended to units which have been repaired or altered outside of the factory. This warranty covers bench repairs only, and any repairs must be made at the shop or place designated in writing by Aiphone. Aiphone will not be responsible for any costs incurred involving on-site service calls. Aiphone Communication Systems Toll Free Technical Support 1700 130th Ave. N.E. 1-800-692-0200 Pg. 8Bellevue, WA 98005 TOLL FREE FAX LINE: LAF-C Instr. (425) 455-0510 1-800-832-3765 Lit #92101 FAX (425) 455-0071 E-Mail: tech-serv@aiphone.com 1198JD ...

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