Yamaha NS-BP300 Service Manual

Also see for NS-BP300: Owner's manual Owner's manual Owner's manual Owner's manual Owner's manual

★ All voltages are measured with a 10MΩ/V DC electronic voltmeter.★ Components having special characteristics are marked and must be replacedwith parts having specifications equal to those originally installed.★ Schematic diagram is subject to change without notice.A12345678910B C D E F G H I J K L M NR-840/NS-BP30066MAIN 1/4IC503CB505CB502W502CB503W501CB5049.0000000000.84.94.9-6.900004.44.47.00004.44.4-6.92.414.22.42.427.04.90.8014.27.0-6.927.036.836.227.8009.132.120.0014.27.74.47.73.820.027.939.2-39.400AC57.8-6.838.00-0.6-0.60039.2-0.2-0.2-0.7 -0.7038.1 39.2-0.2-0.2-6.800-38.9-38.9-39.3-0.6-38.4-38.4-0.7-38.3-38.3-38.9-38.4-39.538.038.71.139.3000.6 0.639.338.90-0.50-39.3-1.0-0.5-39.338.238.2-38.8-39.3-1.0-38.200-1.0 -1.01.11.1-0.4-39.0-1.2-1.2-0.6-0.60000000-38.4-38.9-39.5-39.5-39.5038.8000.20.21.2-1.21.138.11.139.239.239.21.1-0.5-1.238.7039.239.039.00 0038.838.800OUT LIC503: KIA7809API-U/PVoltage regulatorR1R2R3R4 R5 R6R7R8Z1Q12Q13Q18Q17Q14Q19Q10Q8Q16INPUTOUTPUTCOMMON (GND)Q15Q11-1Q11Q2Q3Q4Q5 Q9Q7Q1 Q6R12R19R10R9R15 R14R16R21R20R22 R23R17R13R11 R18C1132MAIN (1)SPEAKERSREGULATORTo POWER TRANSFORMERto FUNCTION (1)_CB305Page 63 K6to FUNCTION (1)_CB102Page 65 D9to MAIN (8)_CB506Page 69 J5to MAIN (2)_CB401Page 67 B7