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Yamaha LMY2-MLAB, Service Manual

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Yamaha LMY2-MLAB Service Manual Download Page 12

LMY2-MLAB

12

B

B’

B

B’

● 

ML2 Circuit Board

（

ML2

シート）

Pattern side (

パターン側

)

2NAP-WC26140   

1

www. xiaoyu163. com

QQ 376315150

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TEL 13942296513

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Q

TEL  13942296513  QQ  376315150  892498299 

TEL  13942296513  QQ  376315150  892498299 

http://www.xiaoyu163.com

http://www.xiaoyu163.com

Summary of Contents for LMY2-MLAB

Page 1: ...IAGRAM レベルダイアグラム 7 LSI PIN DESCRIPTION LSI 端子機能表 8 IC BLOCK DIAGRAM IC ブロック図 9 CIRCUIT BOARD シート基板図 10 INSPECTION 検査 13 17 OVERALL CIRCUIT DIAGRAM 総回路図 PARTS LIST LMY2 MLAB MIC LINE INPUT CARD 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 ht...

Page 2: ...change without notice or obligation to retrofit Should any discrepancy appear 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 disassemb...

Page 3: ... 1 7 or later ANALOG INPUT CHARACTERISTICS Input Terminals Gain Actual load For use with Input level Connector impedance nominal Nominal 6 Max before clip CH1A CH1B 68 dB 3 K 50 600 Mics 68 dBu 309uV 54 dBu 775uV XLR 3 31 type Balanced 2 CH2A CH2B 10 dB 600 Lines 10 dBu 2 45 V 24 dBu 12 3 V 1 0 dBu is referenced to 0 775 Vrms 2 CH1A CH1B CH2A CH2B XLR 3 31 type connectors are balanced 1 GND 2 HOT ...

Page 4: ...1A CH1B LMY4 DA GAIN 10 dB 120 CH2A CH2B Dynamic range are measured with a 6 dB octave filter 12 7 kHz equivalent to a 20 kHz filter with infinite dB octave attenuation Hum Noise 20 Hz 20 kHz CH1A CH1B LMY4 DA Equivalent Input Noise 128 CH2A CH2B Rs 150 GAIN 68 dB CH1A CH1B LMY4 DA Rs 150 GAIN 26 dB 80 CH2A CH2B Hum Noise range are measured with a 6 dB octave filter 12 7 kHz equivalent to a 20 kHz...

Page 5: ...3 1 18 100 123 120 40 7 33 Unit 単位 mm 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 6: ... A SWSEL B GAIN _X GAIN _Y GAIN _Z GC ON CHANNEL HA1 HA2 PAD HA3 DSP 68 62 56 50 44 38 32 26 20 14 8 2 4 10 38 38 38 38 38 38 38 0 0 0 0 0 0 0 HI HI HI HI HI HI HI LOW LOW LOW LOW LOW LOW LOW 0 0 0 0 0 0 0 14 14 14 14 14 14 14 LOW LOW LOW LOW LOW LOW LOW HI HI HI HI HI HI HI 0 0 0 0 0 0 0 0 0 0 0 18 18 18 HI HI HI HI HI HI HI HI HI HI HI LOW LOW LOW HI HI LOW LOW HI LOW LOW LOW HI LOW LOW HI LOW L...

Page 7: ... 20 30 40 50 60 70 80 ANALOG HA2 HA1 HA3 dBu DIGITAL ANALOG 0 10 20 30 40 50 60 70 80 DIGITAL 90 100 110 dBFS 0dBFS Full scale 28CA1 8829942 2 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: ... oscillator or input 256fs clock to XI Connect X tal IN crystal oscillator or input 256fs clock to XI Output clock which is inputted to 256fs OUT XI Output 128fs clock Output 64fs bit clock which divides MCK It rises at the head of SYNC Output 1fs word clock which divides MCK and of which the duty ratio is 50 Input output of 1fs synchronous clock The fall of SYNC makes the 6th rise of 256fs the he...

Page 9: ...810 DECODER ML2 IC907 SN74LV08APWR X4463A00 Qual 2 Input AND ML2 IC901 1 2 3 4 V 8 7 6 5 Output A V Non Inverting Input A DC Voltage Supply DC Voltage Supply Output B Inverting Input B Non Inverting Input B Inverting Input A ENABLEINPUTS G1 G2A G2B C B A Y0 Y1 Y2 Y3 Y4 Y5 Y6 Y7 H H H L H H H H H H H X X X L L H H L L H H X X X L L L L H H H H H X X L L L L L L L L X X L H H H H H H H H X H X L L L...

Page 10: ...0X 0Y 1Z 1X 0Y 1Z 0X 1Y 1Z 1X 1Y 1Z NONE 0 1 2 3 4 5 6 7 NONE L H L H L H L H X L L L L H H H H X L L L L L L L L H L L H H L L H H X 0X 0Y 1X 1Y 2X 2Y 3X 3Y NONE ON CHANNEL 1 2 3 4 5 6 7 GROUND 16 15 14 13 12 11 10 V 8 9 SW1CON NC3 SW1IN NC5 NC8 V SW2CON NC14 SW2IN NC12 SW2OUT NC10 NC9 SW1OUT S1 S2 to ML4 Circuit board Note See parts list for details of circuit board component parts 注 シートの部品詳細はパー...

Page 11: ...mponents side 部品側 CH2B CH2A CH1B CH1A 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: ... side パターン側 2NAP WC26140 1 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 13: ...ided through INPUT A port set DipSW on UNC beforehand See Procedure 3 Set the load for the analog output of AO8 at 600 ohm Make GAIN settings using DipSW on UNC circuit board See Procedure 3 1 2 Test Program The test program starts running when DipSW on each UNC circuit board for AI8 and AO8 is set in debug mode and power is activated For setting see Procedure 3 For both AI8 and AO8 use the firmwa...

Page 14: ...3 less than 0 007 less than 0 02 less than 0 05 Tolerance level THD 1 kHz Tolerance level output level Input level AI8 GAIN setting SLOT 1 LMY2 MLAB SLOT 1 LMY2 MLAB Input A Word Clock source type Word Clock source type AO8 AI8 2 INSPECTION 2 1 Option card ID Conduct an ID check when power is activated after the card is inserted 7 segment LED in front of AI8 displays the left digit slot number and...

Page 15: ...C of AI8 48 kHz 6 5 44 1 kHz 10 Set UNI circuit board so that WordClock can be switched over to BNC Proceed to inspection after checking that the 7 segment LED displays the following q Fs 51 2 kHz 48 kHz 6 5 Set Function Generator for 51 12 kHz Check that the output level listed below can be achieved w Fs 39 kHz 44 1 kHz 10 Set Function Generator for 39 69 kHz Make the same inspection as in q and ...

Page 16: ...g shows the setting DipSW is not used in any case Null R1 24Ω Note 1 LMY2 MLAB CH1A or CH2A C H G Note 1 Limit the relative error of two 24 ohm resistors to a maximum 50 m ohm Clock is provided from INPUT A GAIN 24 dB set R1 24Ω Note 1 1 In order of 2 3 and 4 5 6 7 Operating mode 1 Operation 0 Debug 1 ALL A 1 ALL OFF 1 ALL MIN 0 dB 0 ALL B 0 ALL ON 0 2 3 4 GAIN mode 1 WC Sel mode 1 GAIN mode 1 A B...

Page 17: ...おきます 3項参照 AO8アナログ出力の負荷は600 Ωとします GAIN設定は UNCシート内のDipSWで行います 3項参照 1 2 テストプログラム AI8 AO8の各UNCシート上にあるDipSWをデバッグモードに設定し電源ONすることでテストプログラムが起動します 設定方法については 3項を参照してください AI8 AO8共にファームウエアーは 下記に記載されたバージョンと一致するPMID SYSTEM SOFTWAREの AI8 AO8 ファームウエアー を使用してください LMY2 MLAB AI8 接続図 AO8 INPUT A OUTPUT A Function Generator LMY4 DA 68ピンケーブル Int48 BNC HEAD PHONE SIN波発振器 アンプ Clockソースは 検査により選択 歪計 バージョン 1 70 0 www xiaoyu16...

Page 18: ...20 Hz 20 kHz 0 05 以下 0 03 以下 0 007 以下 0 02 以下 0 05 以下 許容範囲 THD 1 kHz 許容範囲 出力レベル 入力レベル AI8 GAIN設定 SLOT 1 LMY2 MLAB SLOT 1 LMY2 MLAB Input A Word Clockソース種別 Word Clockソース種別 AO8側 AI8側 2 検査 2 1 OPTION CARD ID カード挿入後 電源ON時にIDチェックを行います AI8正面の7セグメントLED上に左の桁 スロット番号 右の桁 カード種類 と表示されます これが8スロット分順次表示されるのでLMY2 MLABと認識しているか目視確認してください また最後に現在ロックしているWordClockソースが表示されるので Int48kHzの状態になっているか確認します 同様に AO8正面の7セグメントLED...

Page 19: ...えるようUNCシートを設定します AI8の7セグメントLEDが次のように表示されることを確認後 検査を行います q Fs 51 2 kHz 48 kHz 6 5 Function Generatorの設定を51 12 kHzにします 下表の出力レベルが得られることを確認します w Fs 39 kHz 44 1 kHz 10 Function Generatorの設定を39 69 kHzにします qの検査と同様に行い 同様の出力レベルが得られることを確認します WordClockソース種別表示 BNC 許容範囲 67 dBu以下 条件 CH2Aを 入力150Ωショート CH1A入力レベル 23 dBu AI8 GAIN設定 0 dB 設定範囲 1 dB以内 許容範囲 79 dBu以下 95 dBu以下 条件 入力150Ωショート 入力150Ωショート AI8 GAIN設定 36 dB 0 d...

Page 20: ... dB設定 R1 24Ω 注1 1 2 3 4 の順で 5 6 7 動作モード 1 運用 0 デバック 1 ALL A 1 ALL OFF 1 ALL MIN 0 dB 0 ALL B 0 ALL ON 0 2 3 4 GAINモード 1 WC Sel モード 1 GAIN モード 1 A B Sel ファントム GAIN 1 1 1 Int48 kHz 1 1 1 スイープ 2 4 3 2 1 8 CPU 1 ON UNCシート 0 OFF 7 6 5 1 0 1 Int39 kHz 1 0 1 66 dB 0 1 1 Int44 1 kHz 0 1 1 78 dB 0 0 1 OUTPUT A 0 0 1 54 dB 1 1 0 OUTPUT B 1 1 0 48 dB 0 1 0 OUTPUT C 0 1 0 36 dB 0 0 0 no use 0 0 0 12 dB 1 0 0 ...

Page 21: ...r not installed 2 3 V3 Notation for Circuit Diagrams 回路図表記上の注意 1 How to identify inter sheet connectors シート間コネクタの読み方について The number indicates the destination page 数字は信号の行先ページ数を示します This indicates the location of the counter inter sheet connector The alphabet indicates horizontal direction and the number indicates vertical direction 対応するシート間コネクタのあるロケーションを示します アルファベットが水平方向 数字が垂直方向 Signal name 信号名 No...

Page 22: ...1 3 C8 1 3 C11 1 3 S2 1 3 C6 1 3 C14 BUFFER ADFC DECORDER BUFFER D FF OP AMP OP AMP AND A D CONVERTOR A D CONVERTOR D FF 28CC1 8829943 2 Mylar Capacitor Metal Film Resistor not installed ML2 5 Note See parts list for details of circuit board component parts 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 ...

Page 23: ... Error margin 誤差 0 1 Error margin 誤差 0 5 チップ金属被膜抵抗 D Mica Capacitor マイカコン M Ceramic Capacitor セラミックコンデンサー セ to ML2 Soldered 1 HIC HA Note See parts list for details of circuit board component parts 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 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315...

Page 24: ...イ です LMY2 MLAB MIC LINE INPUT CARD A Australian model B British model C Canadian model D German model E European model F French model H North European model I Indonesian model J Japanese model K Korean model Notes DESTINATION ABBREVIATIONS M South African model O Chinese model Q South east Asia model T Taiwan model U U S A model V General export model 110V W General export model 220V N X General e...

Page 25: ...ping Screw B Lens Circuit Board Bonding Head Screw WC401100 VV441000 EP600190 V4238900 WC628100 VS863000 10 20 30 40 50 60 DESCRIPTION REF NO PART NO 部 品 名 REMARKS QTY RANK New parts RANK Japan only OVERALL ASSEMBLY 総組立 50 30 20 40 60 10 60 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 ...

Page 26: ...citor SL chip Ceramic Capacitor SL chip Ceramic Capacitor B chip Electrolytic Cap Ceramic Capacitor B chip Ceramic Capacitor SL chip Ceramic Capacitor SL chip Electrolytic Cap chip Ceramic Capacitor B chip Electrolytic Cap chip Electrolytic Cap TONEREX Electrolytic Cap TONEREX Ceramic Capacitor B chip Ceramic Capacitor F chip Ceramic Capacitor F chip Electrolytic Cap TONEREX Ceramic Capacitor F ch...

Page 27: ... Ceramic Capacitor B chip Electrolytic Cap chip Electrolytic Cap TONEREX Electrolytic Cap TONEREX Ceramic Capacitor B chip Ceramic Capacitor F chip Ceramic Capacitor F chip Electrolytic Cap TONEREX Ceramic Capacitor F chip Ceramic Capacitor F chip Electrolytic Cap TONEREX Ceramic Capacitor SL chip Ceramic Capacitor CH chip Ceramic Capacitor CH chip Electrolytic Cap Ceramic Capacitor B chip Ceramic...

Page 28: ...1 10 D 10 0K 0 1 J 10 0K 0 1 J 2 2K 1 10 D 100K 1 4 F 100K 1 4 F 6 8K 1 4 F 6 8K 1 4 F 390 0 1 4 J 390 0 1 4 J 39 0K 1 4 J Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Array Diode Array Diode Array Diode Array LC Filter LC Filter IC IC Circuit Board IC IC IC IC IC IC IC IC IC Circuit Board IC IC IC IC IC IC IC IC IC IC IC IC IC IC IC IC IC IC XLM Connector XLM Conn...

Page 29: ...istor chip Metal Film Resistor chip Metal Film Resistor chip Carbon Resistor chip Carbon Resistor chip Metal Film Resistor chip Metal Film Resistor chip Metal Film Resistor chip Metal Film Resistor chip Metal Film Resistor chip Metal Film Resistor chip Metal Film Resistor chip Metal Film Resistor chip Metal Film Resistor chip Metal Film Resistor chip Metal Film Resistor chip Metal Film Resistor ch...

Page 30: ...chip Carbon Resistor chip Metal Film Resistor chip Metal Film Resistor chip Metal Film Resistor chip Carbon Resistor chip Metal Film Resistor chip Metal Film Resistor chip Carbon Resistor chip Carbon Resistor chip Metal Film Resistor chip Metal Film Resistor chip Carbon Resistor chip Carbon Resistor chip Metal Film Resistor chip Metal Film Resistor chip Metal Film Resistor chip Metal Film Resistor...

Page 31: ...esistor chip Carbon Resistor chip Carbon Resistor chip Carbon Resistor chip Carbon Resistor chip Carbon Resistor chip Carbon Resistor chip Carbon Resistor chip Carbon Resistor chip Carbon Resistor chip Carbon Resistor chip Carbon Resistor chip Carbon Resistor chip Carbon Resistor chip Carbon Resistor chip Carbon Resistor chip Carbon Resistor chip Carbon Resistor chip Carbon Resistor chip Carbon Re...

Page 32: ...tor Metal Film Resistor chip Metal Film Resistor chip Metal Film Resistor chip Metal Film Resistor chip Metal Film Resistor chip Metal Film Resistor chip Metal Film Resistor chip Metal Film Resistor chip Metal Film Resistor chip Metal Film Resistor chip Metal Film Resistor chip Metal Film Resistor chip Metal Film Resistor chip Metal Film Resistor chip Metal Film Resistor chip Metal Film Resistor c...

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