Yamaha EMX620 Service Manual Download Page 37

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EMX620

Note:See parts list for details of circuit board component parts.

WARNING

Components having special characteristics are maked

and must be replaced with parts having specification equal to those

originally installed.

NJM7815FA (XD853A00)
REG15V
NJM7805FA (FX607A00)
REG5V

INPUT

GND

OUTPUT

NJM7915FA (XD854A00)
REGULATOR -15V

GND

INPUT

OUTPUT

OP AMP

INVERTER

D-F/F

SRAM 256K

G.EQUALIZER

LED DRIVER

REGULA

+15V

REGULATOR -15V

REG5V

OVERALL CIRCUIT DIAGRAM

w w w

x i a o y

u 1 6 3 .

c o m

Q Q

3 7 6 3 1 5 1 5 0

T E L

1 3 9 4 2 2 9 6 5 1 3

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

Summary of Contents for EMX620

Page 1: ...VEL DIAGRAM 11 DISASSEMBLY PROCEDURE 12 LSI PIN DISCRIPTION 14 IC BLOCK DIAGRAM 15 INSPECTION 16 PARTSLIST CIRCUITDIAGRAM CIRCUITBOARDS www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 2: ... to exist please contact the distributor s Service Division WARNING Static discharges can destroy expensive components Discharge any static electricity your body may have accumulated by grounding yourself to the ground bus in the unit heavy gauge black wires connect to this bus IMPORTANT Turn the unit OFF during disassembly and parts replacement Recheck all work before you apply power to the unit ...

Page 3: ...CH1 4 Maximum voltage gain 48 dB CH IN Lo Z to REC OUT CH1 4 PAD OFF 56 dB CH IN Hi Z to MAIN OUT MONITOR OUT CH1 4 26 dB LINE IN to MAIN OUT 26 dB AUX IN to MAIN OUT 22 dB TAPE IN to MAIN OUT 46 dB INST IN to MAIN OUT Crosstalk at 1 kHz 65 dB adjacent input 65 dB input to output 15 dB Maximum Input channel equalization HIGH 10 kHz shelving LOW 100 Hz shelving Turn over roll off frequency of shelv...

Page 4: ...he lowest level that can produce an output of 4 dB 1 23 V or the nominal output level when the unit is set at maximum gain All level controls are at maximum position 2 Balanced T HOT R COLD S GND 3 Unbalanced 0 dB 0 775 Vrms 0 dBV 1 Vrms Output Specifications Output connectors Actual source Nominal Output level Connector type impedance impedance Nominal Max beforecliping SPEAKERS OUT A B 0 1 ohm 4...

Page 5: ...yu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 6: ...yu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 7: ...AL L HALL S HALLswitches 7 DIGITAL EFFECT ON switch indicator 1 Channel Section 2 DIGITAL EFFECT Section www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 8: ...ERindicator 3 MAIN Section 4 MONI Section 5 POWER Indicator PHANTOM Switch Indicator 17 POWER indicator 18 PHANTOM switch www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 9: ... OUTPUTjacks 9 MAIN OUTPUTjack 10 PHONES OUTPUTjack 11 MONITOR OUTPUTjack 1 POWERSwitch 2 SPEAKERSA B 6 Input Output Panel Input Output Panel www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 10: ...ENSIONS www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 11: ... 92473 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 12: ... 4 0X8 MFZN2BL EG340360 fig 1 4 Fig 1 Front View Rear View Inside View Circuit Boards and Unit Ref No Screw Qty Front Panel P50 Knob MX BLUE D GRAY VU860300 fig 2 8 MIX Circuit Board P60 Knob MX GREEN D GRAY VU860200 fig 2 12 P70 Knob ORANGE D GRAY VV625800 fig 2 7 P80 Knob N GRAY D GRAY VU859700 fig 2 9 A Nut fig 2 14 P90 Bonding Tapping Screw B 3 0X8 MFZN2BL VN413300 fig 2 8 P40 Hexagonal Socket...

Page 13: ... Front View Fig 3 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 14: ...ear 48 MA6 O 17 PRG I DC D 5V 49 MA7 O 18 MODE I Preset mode H DC 5V 50 MA12 O 19 VSS Ground 51 MA14 O 20 AVSS Ground 52 VSS Ground 21 CVA N C 53 MA10 O 22 AORL O N C 54 MA011 O 23 AORR O N C 55 MA09 O External RAM interface address 24 CHL I Sample hold capacitor connection 56 MA8 O 25 AIL I Lch ADC input 57 MA13 O 26 VDD DC D 5V 58 VDD DC D 5V 27 AIR I Rch ADC input 59 WEN I Write enable 28 CHR I...

Page 15: ...ational Amplifier TC74HC14AF TP1 XD657A00 Hex Inverter TC74HC74AP IR007400 Dual D Type Flip Flop M5238AP XM085A00 Dual Operational Amplifier www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 16: ... Center MONITOR level control Maximum EFFECT level control Maximum Level control Maximum PAD OFF ST Channel Input 5 6 Section EQ HIGH LOW level control Center MONITOR level control Maximum EFFECT level control Maximum Level control Maximum EFFECT Section DIGITAL EFFECT ON switch OFF MAIN Section GRAPHIC EQUALIZER 7 band Fader Center EFFECT RTN level control Maximum AUX IN Maximum TAPE IN Maximum M...

Page 17: ...the result of the equalizer is out of the specified range change the input signal frequency so that the output signal is at the set level Its frequency should then be within the range of 80 120 of the standard frequency 2 7 Graphic Equalizer Characteristics When the input signals shown below are applied to the channel input in the states of 2 3 and graphic equalizer level control are changed from ...

Page 18: ...evel controls in the MAIN and MONITOR section are changed to maximum or minimum the residual noise should be as shown in the table below Apply a DIN LOW PASS filter Table 5 Units dBs MASTERVOLUME MAINOUT L R MONITOROUT EFFECTOUT Maximum 71 73 73 Minimum 88 88 2 13 Phantom Power 48V Connect a load resistance of 10 K ohm more than 1W between pins 1 and 2 of both the Lo z IN input terminals then shor...

Page 19: ...onic Distortion Apply a 1kHz sine wave signal to the input the three output level should be 200 W 4 ohms 31 2 dBs ch the distortion ratio should be less then 0 5 Apply a sine wave signal of 20Hz 1kHz and 20 kHz separately to the input the three output level should be 100 w 4 ohms 28 2 dBs ch the distortion ratio should be less than 0 5 Do this inspection within 30 seconds 3 7 Residual Noise Set th...

Page 20: ... dBs sine wave signal to the input and then connect a 1 ohm 5 100 W resistor confirm that the output signal is Vp p 20 V and that the signal is not rectangular 3 11 LIMITER Indicator When applying a 1 kHz 10 8 dBs sine wave signal to the input the LIMITER indicator should light up 3 12 Efficiency When adjusting for the output of L and R to become 10 V 2 2 dBs confirm that the power consumption is ...

Page 21: ...yu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 22: ...yu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 23: ...yu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 24: ...yu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 25: ...yu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 26: ...yu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 27: ...al characteristics are marked and must be replaced with parts having specifications equal to those originally installed CONTENTS OVERALL ASSEMBLY 2 ELECTRICAL PARTS 5 The numbers in QTY shows quantities for each unit The parts with in Part No are not available as spare parts The second letter of the shaded parts number is I not one The second letter of the shaded parts number is O not zero www xia...

Page 28: ...B120 B130 B70 B80 B60 B50 B40 B10 B20 20 40 60 50 30 30 R110 R130 R140 R60 R30 R38 R35 B30 B110 B60 OVERALL ASSEMBLY www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 29: ...Rear Assewmbly Rear Assewmbly Rear Assewmbly Rear Assewmbly Rear Assewmbly Rear Panel Rear Panel Rear Panel Rear Panel Circuit Board Circuit Board Circuit Board Bind Head Tapping Screw B Bind Head Tapping Screw B Bind Head Tapping Screw B Bind Head Screw Support Insulation Sheet Bind Head Screw Switch Bracket AC Cord AC Cord AC Cord AC Cord Cord Strain Relief Bonding Tapping Screw B 4 0X8 MFZN2BL ...

Page 30: ...w B Holder Cord Bind Head Screw Power Switch Knob ACCESSORISE Speaker Cable 4 0X6 MFZN2BL 4 0X10 MFZN2BL SP HJ HJ 5m U V H W B A J 2 2 01 01 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 31: ...istor Transistor Digital Transistor Transistor Push Switch Push Switch MIX PWR PWR PWR MIX IMSA 6024 CD GRAY WHITE NO 947 CD GRAY 0 6 M2426XX 12P TE 1SS133 176 HSS104 1SS133 176 HSS104 1SS133 176 HSS104 1SS133 176 HSS104 ZJSR5101 223TA NJM2068L D NJM4558L D NJM2068L D NJM4558L D NJM4558L D NJM4558L D M5238AP NJM2068L D NJM2068L D M5229P BA6137 M5238AP NJM4558L D NJM4558L D TC74HC14AP TC74HC74AP W2...

Page 32: ... Mylar Capacitor Mylar Capacitor Mylar Capacitor Mylar Capacitor Mylar Capacitor Mylar Capacitor Mylar Capacitor Mylar Capacitor Mylar Capacitor Mylar Capacitor 2C 2S Lock 2C 2S Lock SSSU012NB1 YL SPEA31MC16 YL SPEA12MC15 YL B 50 0K RK09D113 B 50 0K RK09D113 B 50 0K RK09D113 B 50 0K RK09D113 A 20 0K RK09K113 A 20 0K RK09K113 A 20 0K RK09K113 A 20 0K RK09K113 A 20 0K RK09K113 A 20 0K RK09K113 B 50 ...

Page 33: ...0 0 1 4 J 750 0 1 4 J 1 0K 1 4 J 1 2K 1 4 J 1 5K 1 4 J 2 2K 1 4 J 2 7K 1 4 J 3 3K 1 4 J 3 9K 1 4 J 4 3K 1 4 J 4 7K 1 4 J 5 6K 1 4 J 8 2K 1 4 J 15 0K 1 4 J 10 0K 1 4 J 27 0K 1 4 J 33 0K 1 4 J 18 0K 1 4 J 36 0K 1 4 J 47 0K 1 4 J 68 0K 1 4 J 100 0K 1 4 J 120 0K 1 4 J 220 0K 1 4 J 240 0K 1 4 J 470 0K 1 4 J C 422 534 C 515 518 523 C 535 538 C 435 C 436 C 437 C 407 417 C 405 406 C 307 308 C 525 528 C 13...

Page 34: ...Coil Coil Ferrite Bead Ferrite Bead Coil Transistor Transistor Transistor Transistor Digital Transistor Transistor Transistor Transistor Transistor Transistor Transistor 390 0 1 4 J 2 2K 1 4 F 8 2K 1 4 F 10K 1 4 F 47K 1 4 F 2 4K 1 4 F 3 9K 1 4 F PWR PWR PWR FR25 15 12 D40 CQ 05CT 0 6 M2426XX 12P TE VH 2P TE VH 6P TE VH 3P SE VH 3P SE 1SS133 176 HSS104 1SS133 176 HSS104 MTZ J 5 1B 5 1V MTZ J 5 1B 5...

Page 35: ...r Carbon Resistor Carbon Resistor Carbon Resistor Carbon Resistor Flame Proof C Resistor Flame Proof C Resistor Flame Proof C Resistor Flame Proof C Resistor 2SC2705 O Y 2SA1145 O Y 2SC2705 O Y 2SC5395 E F 2SA1993 E F 2SA1708 S T 2SC4488 S T DTC114ES DTA114ES 2SC5395 E F 2SA1993 E F 2SC5395 E F 2SC5395 E F B1647 D2560 B1647 D2560 B1647 D2560 SDDLB11874 YL PTH9M04BE222TS2 DC OSA SH 224DM3M B C 18 2...

Page 36: ...r Transformer Power Transformer Power Transformer AC Cord AC Cord AC Cord AC Cord Speaker Cable 1 0 1 4 J 0 1 3W J 33K 1 4 F 220K 1 4 F 680 0 1 4 F 22K 1 4 F 75 0K 1 5 F 47 2W J 68 0 5W K UL CSA CE AS J VCTF 2X0 75 12A UC SJT 3X 18 10A E H05VV F3X0 7510A BS H05VV F3X0 75 HJ HJ 5m R 145 147 150 R 143 144 R 110 R 101 102 R 120 R 129 R 103 106 R 167 R 165 166 J U V H W B A J U V H W A B J 01 01 01 01...

Page 37: ...PUT 1 2 3 NJM7915FA XD854A00 REGULATOR 15V 1 GND 2 INPUT 3 OUTPUT OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP OP AMP INVERTER INVERTER D F F SRAM 256K G EQUALIZER LED DRIVER REGULATOR 15V REGULATOR 15V REGULATOR 5V OVERALL CIRCUIT DIAGRAM w ...

Page 38: ...ils of circuit board component parts I C 4 0 1 I C 4 0 3 Pattern Side Pattern Side 1999 12 lot 2000 1 4 lot Transition measure Bond Bond Component Side Component Side Component Side Component Side Component Side Panel layout MIX Circuit Board C version w w w x i a o y u 1 6 3 c o m Q Q 3 7 6 3 1 5 1 5 0 9 9 2 8 9 4 2 9 8 T E L 1 3 9 4 2 2 9 6 5 1 3 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942...

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