Yamaha-EMX-66-M-Service-Manual电路原理图.pdf

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1、SERVICE MANUAL HAMAMATSU, JAPAN 1,387K-2101 Printed in Japan 2002.03 PA011626 CONTENTS SPECIFICATIONS . 3 PANEL LAYOUT. 7 CIRCUIT BOARD LAYOUT 103 dBs When each PROGRAM switch is pressed, confirm that the corresponding LED lights up. Apply the music source (vocal etc), and confirm the effect aurally

2、. 2.13Stability Check Note: This mesurement should be performed with a load resistance connected to power amplifier output. (See 3.1.1) At each input terminal, connect 10pF0.1F capacitor in parallel to the load resistance, and confirm that the system works normally without oscillation etc. Set all V

3、R and EQ faders to maximum, and confirm that the system works normally. (Especially, does not oscillate when the EQ HIGH is set to maximum) 3.Power Amplifier Check 3.1For the case that the POWER AMP switch is MAIN-MONITOR or MAIN-MAIN 3.1.1 Preparation INPUT terminal: CH 5 LINE 1 POWER AMP switch: M

4、AIN-MAIN OUTPUT terminal: SPEAKERS A1, SPEAKERS B1 Load Resistance: 4 (more than 300W) Except otherwise indicated, the load resistance should be connected only for the power amplifier check. Set the LEVEL control of CH1-4, 6 to minimum. Except the above, same as the setting of 2.1. 3.1.2 Power ON Mu

5、te Check Turn on the power and confirm that the mute system is released and the relay is switched on after 2.51 seconds. 3.1.3 Output Terminal D.C. Voltage Check Ground input terminal and confirm that the D.C. voltage of output terminal is 0100mV. 3.1.4 Gain Check Apply -26dBs signal into the input

6、terminal and confirm that the output level of 20.02.0dBs can be gained. Set the POWER AMP switch to MAIN-MON and confirm that the same output level can be gained at SPEAKERS A2, B2 output. 3.1.5 Frequency Response Check YAMAHA SPEAKERS PROCESSING Switch OFF Apply -26dBs signal info input terminal, a

7、nd confirm that the output level for 20Hz, 20kHz signal are within +1, -3dB from the level for 1kHz signal. YAMAHA SPEAKERS PROCESSING Switch ON Apply 70Hz / -26dB signal into input terminal, and confirm that the output level is within 6.52dB from the level for 1kHz input with YAMAHA SPEAKERS PROCES

8、SING switch OFF. Besides, confirm that the LED lights up when YAMAHA SPEAKERS PROCESSING switch is ON and that LED goes out when the switch is OFF. 37 EMX66M 3.1.6 Harmonic Distortion Rate Check Note: This mesurement should be finished in 30 seconds. Apply 1kHz signal into input terminal, and confir

9、m that output level of 300W/4 (33.0dBs) can be gained with harmonic distortion rate less than 0.5%. Apply 20Hz, 1kHz and 20kHz signal into input terminal, and confirm that harmonic distortion rate is less than 0.5% as for 20Hz and 1kMz, less than 0.7% as for 20kHz when output level of 150W/4 (30.0dB

10、s) can be gained. 3.1.7 Remaining Noise Check Set the MASTER (MAIN) and the MASTER (MONITOR) to minimum, and confirm that the noise level of output terminal is less than -65dB. Note: Take care not to be affected by inductive noise. This mesurement should be performed by using DIN AUDIO FILTER. 3.1.8

11、 Stability Check (1) Connect 10pF0.47F capacitor in parallel to the 4 load resistance and apply rectangule signal of 10kHz/-26dBs. Then, confirm that overshoot and ringing are as follows. Overshoot: Vp/Vo 1.8 Ringing: within 5 waves (2) Connect 10H0.47H inductor in series to the 4 load resistance an

12、d apply rectangule signal of 10kHz/-26dBs. Then, confirm that overshoot and ringing meet the same condition as (1). (3) Remove the 4 load resistance and connect only 10pF0.47F capacitor as load, and apply rectangule signal of 10kHz/- 26dBs. Then confirm that the system does not oscillate. Besides, c

13、onfirm that overshoot and ringing are as follows. Overshoot: Vp/Vo 2.5 Ringing: within 7 waves 3.1.9 Protection Circuit Check (1) Apply 10Hz signal until output level is saturated, and confirm that the protection circuit works and the relay does not open. (2) Apply 1Hz, Vp-p = 6V(8.7dBs) signal, and

14、 confirm that the protection circuit starts to work in 2 seconds to cut off the signal. (3) Stop applying the input signal, and confirm that the system automatically resumes in 5 seconds. 3.1.10 PC LIMITER Circuit and LIMITER Circuit Check (1) Connect 1 (5%, 100W) load and apply -20dBs signal into i

15、nput terminal. (2) Confirm that the protection circuit starts to work and indicator LED lights up. (3) Stop applying the input signal, and confirm that the system automatically resumes in 5 seconds. 3.1.11 LIMITER Indicator Check Apply 1kHz/-10.8dBs signal, and confirm that LIMITER indicator lights

16、up. 3.1.12 Efficiency Check Apply 1kHz/-24dB signal into input terminal, and confirm that the primary power is 18050W. If the primary power does not meet the rated value, adjust the input level until the output level of SPEAKERS becomes 12.2V(24.0dBs). _ _ _ _ 38 EMX66M 3.2For the case that the POWE

17、R AMP switch is MAIN BRIDGE 3.2.1 Preparation POWER AMP switch: MAIN BRIDGE INPUT terminal: CH 5 LINE 1 MASTER (MAIN): MAX OUTPUT terminal: BRIDGE Load Resistance: 8(more than 600W) Except otherwise indicated, the load resistance of SPEAKER should be connected only for the amplifier check. LEVEL con

18、trol of CH1-4, 6: MIN Except the above, same as the setting of 2.1 3.2.2 Gain Check Apply -26.0dB signal into input terminal, and confirm that the output level of 22.02 dBs can be gained. 3.2.3 Frequency Response Check Apply -26.0dBs signal into input terminal, and confirm that the output level for

19、20Hz, 20kHz signal are within +1, -3dB from the level for 1kHz signal. 4.Miscellaneous 4.1Power Supply Voltage Variation Change the voltage of power supply in the range of 10%, and confirm that the system works normally. T S meter Input GND Speaker Terminal Resistor Resistor 4 4 Level 39 EMX66M 40 E

20、MX66M 41 EMX66M 42 EMX66M 43 EMX66M 44 EMX66M EMX66M EMX66MEMX66M ABCDEFGH 1 2 3 4 5 EMX66M EMX66M OVERALL CIRCUIT DIAGRAM 1/7 (MIX66 1/5) MIX66 OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP (From P.3 F-4) (to P.3 A-3) (to P.4 B-4) (to P.3 A-4) (From P.3 A-5) (From P.5 G-5) (From P.5 G-4) (to P.2

21、 G-5) 38CC1-8822115-2 1 HGFEDCBA 1 2 3 4 5 EMX66M EMX66MEMX66M EMX66M OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP (From P.3 F-4) (From P.5 G-5) (From P.5 G-4) (to P.3 A-3) (to P.4 B-4) (to P.3 A-4) (From P.3 A-5) (From P.1 G-5) 38CC1-8822115-3 1 EMX66M OVERALL CIRCUIT DIAGRAM 2/7 (MIX66 2/5) EM

22、X66M EMX66MEMX66M ABCDEFGH 1 2 3 4 5 EMX66M OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP LED DRIVER LED DRIVER OP AMP (to P.1 G-1) (to P.2 G-1) (From P.5 G-4) (From P.5 G-4) (to P.4 B-2) (to P.4 B-3) (From P.4 E-1) (From P.5 G-4) (From P.5 G-5) (to P.1 G-5) (to P.2 G-5) (From P.4 G-5) (From P.2

23、G-4) (From P.1 G-4) (From P.4 G-5) (From P.2 G-4) (From P.1 G-4) 38CC1-8822115-4 1 EMX66M OVERALL CIRCUIT DIAGRAM 3/7 (MIX66 3/5) HGFEDCBA 1 2 3 4 5 EMX66M EMX66MEMX66M EMX66M to DSP-CN301 OP AMP OP AMP OP AMP DEMULTIPLEXER (to P.3 A-4) (to P.3 A-4) (From P.2 G-4) (From P.1 G-4) (From P.3 G-2) (From

24、 P.3 G-2) (to P.5 C-1) (to P.5 G-4) (to P.5 C-3) (to P.3 G-5) (From P.5 G-4) (From P.5 G-5) (From P.5 G-5) (From P.5 G-4) (From P.5 G-4) (From P.5 G-3) 38CC1-8822115-5 1 EMX66M OVERALL CIRCUIT DIAGRAM 4/7 (MIX66 4/5) EMX66M EMX66MEMX66M ABCDEFGH 1 2 3 4 5 EMX66M OP AMP OP AMP OP AMP OP AMP (to P.4 G

25、-1) (to P.3 G-5) (to P.2 G-1) (to P.1 G-5) (to P.4 D-2) (to P.3 G-4) (to P.3 G-4) (to P.4 G-1) (to P.4 G-1) (to P.3 G-5) (to P.2 G-1) (to P.1 G-5) (to P.4 G-1) (to P.4 G-2) (From P.4 D-2) (From P.4 D-3) (to P.4 G-2) 38CC1-8822115-6 1 to PWR1/4-CN101 EMX66M OVERALL CIRCUIT DIAGRAM 5/7 (MIX66 5/5) HGF

26、EDCBA 1 2 3 4 5 EMX66M EMX66MEMX66M EMX66M DSP OP AMP INVERTER EEPROM 1K MIC DSP DRAM 4M ADC 38CC1-8822165-2 1 to MIX66-CN901 EMX66M OVERALL CIRCUIT DIAGRAM 6/7 (DSP) EMX66M EMX66MEMX66M ABCDEFGH 1 2 3 4 5 EMX66M Common Power Transformer Install Not Install Not Install PWR 1/4 PWR 4/4 PWR 2/4 PWR 3/

27、4 REGULATOR +15V REGULATOR -15V REGULATOR +5V to MIX66-CN902to PWR1/4-W103OR1 to Power Transformer to Power Transformer BRIDGE2112 SPEAKERS AC IN to FAN Assembly POWER ON / OFF to PWR1/4 W103OR2 AB EMX66M OVERALL CIRCUIT DIAGRAM 7/7 (PWR 1/4, PWR 2/4, PWR 3/4, PWR 4/4) NJM7815FA(XD853A00) REGULATOR

28、+15V 1 2 3 1: OUTPUT 2: COMMON 3: INPUT PWR1/4: IC101 NJM7915FA(XD854A00) REGULATOR -15V 1 2 3 1: OUTPUT 2: INPUT 3: COMMON PWR1/4: IC102 NJM7805FA(XJ607A00) REGULATOR +5V 1 2 3 1: OUTPUT 2: COMMON 3: INPUT PWR1/4: IC103 RBV-1306 (V2261600) DIODE STACK 13.0A 600V PWR1/4: D153 1SS133, 1SS176, HSS104

29、(VD631600) DIODE 1 2 1: ANODE 2: CATHODE PWR1/4: D101-108,112-113, 122-125,128,131-132,139 MTZ J 8.2B 8.2V (VG438900) ZENER DIODE 1: ANODE 2: CATHODE 2 1 PWR1/4: D144 D8LD40 (VR149700) DIODE STACK 8.0A 400V 1 2 3 PWR1/4: D147,151 FMX-22S (VS135800) DIODE STACK 10.0A 200V 1 2 3 PWR1/4: D155,156 1N400

30、4L (VU801600) DIODE 1 2 1: ANODE 2: CATHODE PWR1/4: 120-121,126, 140-143,145-146, 148-150,152,154,157 Note: See parts list for details of circuit board component parts. PWR1/4:38CC1-8822388-21 PWR2/4:38CC1-8822388-21 PWR3/4:38CC1-8822388-21 PWR4/4:38CC1-8822388-21 WARNING Components having special c

31、haracteristics are maked and must be replaced with parts having specification equal to those originally installed. 1 EMX66M PARTS LIST WARNING Components having special characteristics are marked and must be replaced with parts having specifications equal to those originally installed. CONTENTS OVER

32、ALL ASSEMBLY. 2 FRONT PANEL ASSEMBLY. 4 REAR PANEL ASSEMBLY. 6 ELECTRICAL PARTS . 8 RK-88 RACK MOUNT KIT . 26 The numbers in “ QTY ” show quantities for each unit. The parts with “ - - ” in “ PART NO. ” are not available as spare parts. The mark “ ” in the remarks column indicates that these parts a

33、re interchangeable. The second letter of the shaded () part number is O, not zero. The second letter of the shaded () part number is I, not one. Note) DESTINATION ABBREVIATIONS A:Australian modelM:South African model B:British modelO:Chinese model C:Canadian modelQ:South-east Asia model D:German mod

34、elT:Taiwan model E:European modelU:U.S.A. model F:French modelV:General export model (110V) H:North European modelW:General export model (220V) I:Indonesian modelN,X: General export model J:Japanese modelY:Export model RACK MOUNT KIT RK-88 2 EMX66M OVERALL ASSEMBLY UPC Label 80 70 10 41 42 43 60 40

35、50 100 B40 B120 B110 B10 B40 B40 B30 B50 B60 B20 B80 B90 B70 B130 90 44 44 110 REF NO.PART NO.DESCRIPTIONREMARKSQTYRANK RANK: Japan only*: New Parts 3 EMX66M * * * * * * * * * * * - - - - - - - - - V7871800 X2294A00 X2295A00 X2296A00 X2297A00 V7019800 EG340190 VR138400 VB132700 - VB132700 VB403600 V

36、P156800 VA039300 - V8322500 V8322600 V8419500 V8322700 EG340110 - EG340360 - EG340360 V8183300 - EG340360 V6283900 V6284300 V6284400 V7240300 OVERALL ASSEMBLY Overall Assembly Overall Assembly Overall Assembly Overall Assembly Body Assembly Rear Panel Assembly Rear Panel Assembly Rear Panel Assembly

37、 Rear Panel Assembly Holder, Transformer Power Transformer Power Transformer Power Transformer Power Transformer Shield Plate Bind Head Tapping Screw-B Bind Head Tapping Screw-B Bind Head Screw Front Panel Assembly Bind Head Screw Bind Head Screw Bind Head Screw Label, Date Code BODY ASSEMBLY Body A

38、ssembly Body Assembly, Sub Front Frame, Sub Handle Assembly Bind Head Tapping Screw-P Bind Head Screw Side Plate Bind Head Screw Side Plate Bind Head Screw Shield Sheet Reinforcement Plate Bind Head Screw ACCESSORIES AC Cord AC Cord AC Cord AC Cord J U H A J COM J U H A UL CE A AS A CP2000 4.0X8 MFZ

39、N2BL 4.0X12 MFZN2BL 4.0X12 MFZN2BL J COM 4.0X12 MFZN2BL 4.0X20 MFZN2BL A4.0X8 MFZN2BL J COM J COM J COM J COM 4.0X30 MFZN2BL 4.0X16 MFZN2BL LEFT 4.0X8 MFZN2BL RIGHT 4.0X8 MFZN2BL 4.0X8 MFZN2BL BS H05VV-F3X0.75 UC SJT E H05VV-FX3 0.75 J VCTF 0.75X3 J(V832670) U,V(V832680) H,B,W(V832690) A(V832700) (V

40、832150) J(V832780) U(V832790) H(V832800) A(V832810) J U, V H, B, W A (V832820) U (V832150) (V839690) (V839700) (V850510) B U, V H, W, A J 01 01 01 01 01 01 03 01 01 01 01 10 40 40 40 40 41 42 42 42 42 43 44 50 60 70 80 90 100 110 B10 B20 B30 B40 B50 B60 B70 B80 B90 B110 B120 B130 2 6 8 7 10 4 4 2 6

41、4 EMX66M I FRONT PANEL ASSEMBLY 150 160 130 170 180 120 240 30 100 110 200 190 41 40 10 20 230 220 210 70 60 80 50607080 90 REF NO.PART NO.DESCRIPTIONREMARKSQTYRANK RANK: Japan only*: New Parts 5 EMX66M * * * * * * 10 20 30 40 41 50 60 70 80 90 100 110 120 130 150 160 170 180 190 200 210 220 230 240

42、 - V8329300 V8266900 V3291600 V3289800 VN413300 V6225300 V6225600 V6225400 V6225700 VB659000 VU859100 VU859000 AAX33040 EP600230 - EP600230 MF127100 V8426200 - VP156800 V8422000 - EP600230 VZ765100 FRONT PANEL ASSEMBLY Front Panel Assembly Front Panel Circuit Board PCB Support Screw Bonding Tapping

43、Screw-B Knob Knob Knob Knob Bind Head Screw Escutcheon, Power Switch Power Switch Knob Circuit Board Bind Head Tapping Screw-B Shield Case Bind Head Tapping Screw-B Connector Assembly Connector Assembly Connector Assembly Bind Head Screw Button Shield Plate Bind Head Tapping Screw-B Cord Binder J CO

44、M MIX66 NEW NIFCO BL 3X25 MFZNBL 3.0X8 MFZN2BL GREEN/M-GRAY L-GRAY/M-GRAY BLUE/M-GRAY L-GRAY/D-GRAY 3.0X8 MFZN2BL MX12/4 MX12/4 DSP-ZFX 3.0X6 MFZN2BL 3.0X6 MFZN2BL 27 100mm P=1.25 24185&2426 15P700L GND A4.0X8 MFZN2BL 3.0X6 MFZN2BL TS-0708 KSS (V832820) HIGH (CH1-6), MID(CH1-6), LOW (CH1-6) EFFECT (

45、CH1-6), EFFECT RTN (MONITOR,MAIN) MONITOR (CH1-6), 2TR IN (MONITOR, MAIN) LEVEL (CH1-6), MASTER (MONITOR, MAIN) POWER ON/OFF (V826710) (V787200) (V827280) (V841270) 01 01 01 01 01 01 01 01 02 01 01 01 01 01 02 15 15 13 18 8 9 8 2 4 2 6 6 EMX66M I REAR PANEL ASSEMBLY 130 170 240 160 140 220 230 30b 3

46、0c 30d 40 30a 50 20 80 60 90 10 70 110 100 120 180 150 240 150 REF NO.PART NO.DESCRIPTIONREMARKSQTYRANK RANK: Japan only*: New Parts 7 EMX66M 10 10 10 10 20 30a 30a 30b 30c 30c 30c 30d 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 220 230 240 - - - - V8328800 V8328900 V8329000 V8329100 - AAX

47、32870 AAX32880 AAX32890 AAX32900 AAX32910 AAX32920 AAX32930 EG330290 VV086500 - - V5214900 VQ074600 V6147300 V2951400 - VT229100 VQ074600 VN413300 V4773400 EG340190 EG340190 VP156800 V8098800 V7646900 REAR PANEL ASSEMBLY Rear Panel Assembly Rear Panel Assembly Rear Panel Assembly Rear Panel Assembly Rear Panel Rear Panel Rear Panel Rear Panel Heat Sink Circuit Board Circuit Board Circuit Board Circuit Board Circuit Board Circuit