Yamaha REX50 REX50 Owners Manual Image - Page 4

PRECAUTIONS 1. AVOID EXCESSIVE HEAT, HUMIDITY, DUST AND VIBRATION Keep the unit away from locations where it is likely to be exposed to high temperatures or humidity - such as near radiators, stoves, etc. Also avoid locations which are subject to excessive dust accumulation or vibration which could cause mechanical damage. 2. AVOID PHYSICAL SHOCKS Strong physical shocks to the unit can cause damage. Handle it with care. 3. DO NOT OPEN THE UNIT OR ATTEMPT REPAIRS OR MODIFICATIONS YOURSELF This product contains no user-serviceable parts. Refer all maintenance to qualified Yamaha service personnel. Opening the unit and/or tampering with the internal circuitry will void the warranty. 4. MAKE SURE POWER IS OFF BEFORE MAKING OR REMOVING CONNECTIONS Always turn the power OFF prior to connecting or disconnecting cables. This is important to prevent damage to the unit itself as well as other connected equipment. 5. HANDLE CABLES CAREFULLY Always plug and unplug cables - including the AC cord - by gripping the connector, not the cord. 6. CLEAN WITH A SOFT DRY CLOTH Never use solvents such as benzine or thinner to clean the unit. Wipe clean with a soft, dry cloth. 7. ALWAYS USE THE CORRECT POWER SOURCE Make sure that the power source voltage specified on the rear panel matches your local AC mains source. U.S. & Canadian models: 120V AC, 60 Hz General model: 220-240V AC, 50/60 Hz 8. ELECTRICAL INTERFERENCE Since the REX50 contains digital circuitry, it may cause interference and noise if placed too close to TV sets, radios or similar equipment. If such a problem does occur, move the REX50 further away from the affected equipment. 9. BACKUP BATTERY The REX50 contains a long-life lithium battery which maintains the contents of the buffer and user memory locations even when the unit is turned OFF. With normal use the battery should last for approximately 5 years. If the battery voltage falls below the safe level, however, the "*** WARNING * * * LOW BATTERY" display will appear on the LCD when the power is first turned ON. If this occurs, have the battery replaced by a qualified Yamaha service center. Do not attempt to replace the battery yourself! FCC CERTIFICATION (USA) This equipment generates and uses radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturer's instructions, may cause interference to radio and television reception. It has been type tested and found to comply with the limits for a Class B computing device in accordance with the specifications in Subpart J of Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient the receiving antenna. Relocate the computer with respect to the receiver. Move the computer away from the receiver. Plug the computer into a different outlet so that computer and receiver are on different branch circuits. If necessary, the user should consult the dealer or an experienced radio/television technician for additional suggestions. The user may find the following booklet prepared by the Federal Communications Commission helpful: "How to identify and Resolve Radio-TV interference Problems". This booklet is available from the U.S. Government Printing Office, Washington, DC 20402, Stock No. 004-000-00345-4. 3