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-BP30068MAIN 3/4W851CB801W801W805W804JK8015.0000.65.15.15.13.55.027.2004.64.627.25.55.000000004.65.12.95.13.5005.20002.0 0.63.80.65.204.35.24.800005.1 5.10 05.102.62.62.62.50 00 000005.05.05.05.05.15.15.15.15.14.64.627.35.15.10000.60000 00 00 00 00 0 0INPUTPRESET PUREDIRECTPHONESMAIN (3)MAIN (6)PURE-DIRECTindicatorTIMERindicatorPOWERindicatorTPindicatorto MAIN (5)_CB51Page 69 D10to MAIN (5)_CB52Page 69 C7 to FUNCTION (1)_CB101Page 65 B3Key detection for A/D portKey input (A/D) pull-up resistance 10 k-ohmsOhm 0 +1.2 k +91 kV 0 – 0.2 0.3 – 0.8 4.0 – 5.0A/D value (5V=1024) 0 – 40 60 – 165 820 – 1023I-KEY0 (91 pin) PRESET UP PRESET DOWN PURE DIRECT