Yamaha-RX-777-Schematic-2电路原理图.pdf

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1、A 1 2 3 4 5 6 7 8 9 BCDEFGHIJKL RX-777 SCHEMATIC DIAGRAM (INPUT) 25 BUFFER P27 A5 MTZJ12C Anode Cathode NJM2068D-DNJM2068LDLA7956 1 15 30 LC782112SC1815 1 8 1 48 1 9 EC B BC E 2SC1740S 2SD1915F DTA144ES DTC114ES 2SD2375 E C B 87654321 OUT1 Vcc +IN2 IN2 OUT2 +Vcc +IN1 IN1 IC501, 506: NJM2068LD IC502,

2、 509512: NJM2068D-D Dual OP-Amp IC503, 504: LC78211 Analog Function Switch IC507, 508: LA7956 Video Switch 1 2 3 4 5 6 7 8 9 10 11 30 29 28 27 26 25 24 23 22 21 20 19 16 12 18 17 14 15 13 LEVEL SHIFTER LATCH CONTROL SHIFT REGISTER ZZ ZZ ZZ L1 L2 L3 L4 LCOM1 L5 L6 L7 L8 RES S VDD VSS VEE LCOM2 LCOM3

3、R1 R2 R3 R4 RCOM1 RCOM2 RCOM3 R5 R7 R8 D1 CL CE R6 123456789 VIDEO OUT ABVIN1GNDVIN2VCCVIN3VIN4 DRIVER 6dB AMP CONTROL 4 INPUT 1 OUTPUT VIDEO SWITCH # All voltage are measured with a 10M/V DC electric volt meter. # Components having special characteristics are marked s and must be replaced with part

4、s having specifications equal to those originally installed. # Schematic diagram is subject to change without notice. CD DIRECT AMP BUFFER AMP BUFFER AMP INPUT SELECTORREC OUT SELECTOR EQ AMP P26 A7 P26 A7 P26 E5 P26 B5 38 12 6 4 7 5 6 5 8 7 2 3 4 1 6 5 8 7 3 2 4 1 6 5 8 7 3 2 4 1 6 5 8 7 3 2 4 1 10

5、 9 7 6 4 3 2 1 10 9 7 4 11 8 5 11 8 5 20 23 26 20 23 26 6 3 2 1 21 22 24 25 27 28 29 30 21 22 24 27 25 28 29 30 6 58 7 1 3 2 4 -13.0 3 -13.0 2 -13.0 8 -13.0 1 6 5 4 7 0 0 13.9 0 0 0 0 0 0 0 -13.9 0 -14.7 -14.7 12.9 -13.0 0 0 0 0 0 0 12.9 -13.9 0 0 0 0 0 0 12.9 -13.0 0 0 0 0 0 0 12.9 -13.0 0 -14.7 -1

6、4.7 14.7 14.7 14.7 0 0 -14.8 0 5.3 14.7 14.7 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 -14.8 0 5.3 0 0 0 0 0 0 0 -14.7 -14.7 0 0 0 0 14.3 -14.3 0 0 0 0 0 0 0.7 0.7 14.8 0 0 14.8 0 0 0 0 5.2 0 0 -13.0 13.0 0 0 0 0 6.2 6.2 7.2 12.1 15.5 5.5 11.5 6.2

7、6.7 0 0 0 12.1 11.6 6.2 0.1 5.3 3.8 0 3.8 11.6 3.8 6.1 0.1 5.3 3.8 0 3.8 11.6 3.8 FR654 1P 100 1P 100 12 A 1 2 3 4 5 6 7 8 9 BCDEFGHIJKL SCHEMATIC DIAGRAM (OPERATION 1/2) 26 RX-777 1SS133 HZS4B2TD HZS5A2TD HZS5C2TD HZS6A2TD HZS6B2TD HZS7A2TD MTZJ12C M38B59EFFPSIR-481ST3FNJM2068D-D2SC4488 BC E 2SD237

8、52SA933S 2SC1740S 2SD1915F DTA144ES E C B Anode Cathode 125 26 40 4165 66 80 E C B 1 48 + # All voltage are measured with a 10M/V DC electric volt meter. # Components having special characteristics are marked s and must be replaced with parts having specifications equal to those originally installed

9、. # Schematic diagram is subject to change without notice. 87654321 OUT1 Vcc +IN2 IN2 OUT2 +Vcc +IN1 IN1 IC302: NJM2068D-D Dual OP-Amp Point 1 Pin 15 of IC301 Point 2 emitter of Q305 and collector of Q307 POWER ON (Connect the power cord) POWER OFF (Disconnect the power cord) Q305 E Q307 C 8 7 1 4 5

10、 6 2 3 REGULATOR RESET FL DISPLAY REMOTE A B 6.0 -14.6 5.3 6.0 5.3 -14.6 0 -14.7 -14.7 6.0 6.0 6.0 6.0 6.0 6.0 000 -14.6 -14.6 6.0 -14.3 -14.4 0 0 0 0 0 0 6.0 5.1 2.4 11.6 5.7 18.0 12.1 11.6 12.1 0 5.7 0 0 0 5.1 0 13.9 6.05.3 6.7 6.0 5.3 6.7 0 13.2 13.90 0 5.1 0 0 0 5.1 5.7 5.2 6.0 5.7 -14.6 5.3 0 2

11、.3 5.3 2.3 0 5.30 2.5 0 0.6 0.8 0 0 00 5.3 -14.6 -14.6 5.3 5.3 5.3 5.3 5.3 5.3 2.4 5.3 5.3 5.3 5.3 5.3 5.2 5.2 5.2 5.3 5.3 0 2.3 2.5 5.3 5.3 5.3 5.3 5.3 0 2.4 5.3 5.3 0.1 5.3 0.1 5.3 -26.7 -26.6 -26.6 -26.6 0 5.2 18.0 -26.8 2.3 0.8 0 5.2 0 0 0 0 5.3 5.3 5.0 5.0 5.3 0 5.3 0 -26.6 -26.7 -26.6 -26.6 -2

12、0.8 -20.8 -20.8 -20.8 -26.8 -21.2 A 2 1 B P25 F7 P25 F8 P27 E1 P26 I6 P25 H4 P28 C1 P26 D8 FR441 12 R216 2.2 M38B57M6-172FP A 1 2 3 4 5 6 7 8 9 BCDEFGHIJKL RX-777 SCHEMATIC DIAGRAM (OPERATON 2/2) 27 VOLUME MOTOR DRIVE HZS5C2TDNJM2068LD 1 8 DTC114ES E C B Anode Cathode LB1641 1 10 87654321 OUT1 Vcc +

13、IN2 IN2 OUT2 +Vcc +IN1 IN1 IC401: NJM2068LD Dual OP-Amp IC405: LB1641 Motor Driver 23 P1 5 IN 1 1 GND 4VZ 6IN 2 OUT 1 8 VCC 2 10 OUT 2 9 P2 INPUT LOGIC PRE DRIVER 7 VCC 1 # All voltage are measured with a 10M/V DC electric volt meter. # Components having special characteristics are marked s and must

14、 be replaced with parts having specifications equal to those originally installed. # Schematic diagram is subject to change without notice. SPEAKERS PHONES PURE DIRECT AMP 7 6 5 4 1 3 2 8 8 4 0 5.2 0 0.1 0 13.8 0.1 0 -13.0 0 0 14.8 0 0 0 -14.8 0 0 1.7 0 0.5 0 0 18.6 18.6 0.7 0.5 0.7 0.40 0 P28 A6 P2

15、6 C8 P25 F4 P28 A2 A 1 2 3 4 5 6 7 8 9 BCDEFGHIJKL SCHEMATIC DIAGRAM (MAIN) 28 RX-777 2SA1708 2SC4488 E C B 1SR139 1SS133 1SS270A MTZJ16A MTZJ27D S5VB20 2SA1694 2SC4467 2SA1358 2SC3421 2SC1740S 2SD1915F DTA123ESTP 2SA893A 2SA970 2SA1015 2SA1145 2SC1815 2SC1890A 2SC2705 E C B Anode Cathode + EC B BC

16、E E C B # All voltage are measured with a 10M/V DC electric volt meter. # Components having special characteristics are marked s and must be replaced with parts having specifications equal to those originally installed. # Schematic diagram is subject to change without notice. MUTING POWER AMP PROTEC

17、TIONMAIN POWER SUPPLY SUB POWER SUPPLY R223 1P 82 D2375 (Q/P) 0 0 -14.6 -14.6 0 0 14.8 15.4 15.4 0 0 -15.4 -15.4 -14.8 15.7 18.5 -6.3 -19.5 18.6 18.6 18.5 -26.7 0 -27.4 0.7 0.7 0 0 18.5 0.5 -19.5 -19.5 -0.1 18.6 -19.5 -0.1 18.6 0 18.6 18.5 18.6 -19.5 0 0 15.618.6 0 0 56.6 (45.6) -56.5 (-45.5) 0 AC 3

18、0.5 AC 82.4 AC 4.2V 14.0 9.7 0.1 0.1 0 14.0 6.3 0 14.0 6.2 6.3 06.2 AC 66.5 AC 12.6 -14.3 0 56.2 0 -14.3 56.6 56.4 0 -0.5 1.1 -0.5 55.4 -0.5 0 56.5 56.5 0.61.1 56.0 0.6 56.6 56 55.4 1.1 -1.1 -1.1 -54.9 -55.5 -1.1 -0.5 -56.5 -56.5 -0.6 0 0 0 0 0 0 -55.5 0.6 -55.5 -55.4 0.6 -55.4 0 -55.4 -0.5 56.6 1.1

19、 -1.1 -55.5 -55.4 -56.1 -54.9 -55.5 -56.5 -56.5 -0.5 -56.5 0 0.6 0 56.6 0 56.2 56.6 0 -0.5 1.1 0.6 56.6 0 0.6 0 -0.5 -1.1 55.4 0.6 -55.5 -55.5 -56 56 1.1 55.4 55.4 56 56.6 -1.1 -0.5 -56.5 0 -55.5 -55.5 -56.0 -55.4 -54.9 -55.5 -55.4 -56.0 0 0.6 -55.5 0 0.6 -55.4 -55.5 -55.4 56 56.5 -14.3 -14.3 0 P27 D1 P27 G7 P26 H6 2.2K 2.2K R224