Yamaha ns bp300

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2 R-840/NS-BP300 R-840/NS-BP300 For U model CAUTION F1: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME TYPE 3.5A, 125V FUSE. For C model CAUTION F1: REPLACE WITH SAME TYPE 3.5A, 125V FUSE. ATTENTION F1: UTILISER UN FUSIBLE DE RECHANGE DE MÉME TYPE DE 3.5A, 125V. This product contains chemicals known to the State of California to cause cancer, or birth defects or other reproductive harm. DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHATSOEVER! Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyes to solder/flux vapor! If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling food. 1. Critical Components Information Components having special characteristics are marked /  and must be replaced with parts having specifications equal to those originally installed. 2. Leakage Current Measurement (For 120V Models Only) When service has been completed, it is imperative to verify that all exposed conductive surfaces are properly insulated from supply circuits. - Meter impedance should be equivalent to 1500 ohms shunted by 0.15 μF. All of the P.C.B.s installed in this unit and solder joints are soldered using the lead free solder. Among some types of lead free solder currently available, it is recommended to use one of the following types for the repair work. - Sn + Ag + Cu (tin + silver + copper) - Sn + Cu (tin + copper) - Sn + Zn + Bi (tin + zinc + bismuth) Caution: As the melting point temperature of the lead free solder is about 30°C to 40°C (50°F to 70°F) higher than that of the lead solder, be sure to use a soldering iron suitable to each solder. -–  TO SERVICE PERSONNEL - Leakage current must not exceed 0.5mA. - Be sure to test for leakage with the AC plug in both polarities. WALL OUTLETEQUIPMENT UNDER TESTAC LEAKAGE TESTER OR EQUIVALENT INSULATING TABLE WARNING: CHEMICAL CONTENT NOTICE! About lead free solder

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3 R-840/NS-BP300 R-840/NS-BP300 -–  SYSTEM COMPOSITION When accepting a repair order from the user, it is recommended to receive the R-840 and BD-940/DVD-840/CD-640 as a set for the repair work. The MCR-940 consists of the R-840, BD-940 and NS-BP300. The MCR-840 consists of the R-840, DVD-840 and NS-BP300. The MCR-640 consists of the R-840, CD-640 and NS-BP300. This service manual is for the R-840/NS-BP300. For service manual of the BD-940/DVD-840/CD-640, please refer to the following publication numbers: BD-940:10115 4/ DVD-840:10115 5/ CD-640:10115 6 -–¼ NS-BP300-–¼ NS-BP300 -–¼ BD-940 -–¼ R-840 -–¼ NS-BP300-–¼ NS-BP300 -–¼ DVD-840 -–¼ NS-BP300-–¼ NS-BP300 -–¼ CD-640 MCR-940 MCR-840 MCR-640 -–¼ R-840 -–¼ R-840