Yamaha-AD8HR-adc-sm(1) 维修电路原理图.pdf

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1、AD8HR1SERVICE MANUALPA011722Copyright (c) Yamaha Corporation. All rights reserved. PDF-K6341 04.03HAMAMATSU, JAPAN200403-260000 CONTENTSSPECIFICATIONS. 3DIMENSIONS. 6PANEL LAYOUT. 7CIRCUIT BOARD LAYOUT. 8DISASSEMBLY PROCEDURE. 9LSI PIN DESCRIPTION. 13IC BLOCK DIAGRAM. 19CIRCUIT BOARD. 22GAIN SETUP.

2、30TEST PROGRAM. 32/43INSPECTIONS. 54/58UPGRADE. 62/65ERROR MESSAGES. 68PARTS LISTBLOCK DIAGRAMCIRCUIT DIAGRAMAD CONVERTER WITH REMOTE PREAMP（目次）（総合仕様）（寸法図）（）（）（分解手順）（LSI端子機能表）（IC図）（基板図）（GAIN設定）（）（総合検査）（）（）（）（回路図）RadioFans.CN 收音机爱 好者资料库2AD8HRComponents having special characteristics are marked and mu

3、st be replaced with parts having specification equal to thoseoriginally installed.LITHIUM BATTERY HANDLINGThis product uses a lithium battery for memory back-up.WARNING :Lithium batteries are dangerous because they can be exploded by improper handling. Observe the following precautionswhen handling

4、or replacing lithium batteries.Leave lithium battery replacement to qualified service personnel.Always replace with batteries of the same type.When installing on the PC board by soldering, solder using the connection terminals provided on the battery cells.Never solder directly to the cells. Perform

5、 the soldering as quickly as possible.Never reverse the battery polarities when installing.Do not short the batteries.Do not attempt to recharge these batteries.Do not disasemble the batteries.Never heat batteries or throw them into fire.ADVARSEL!Lithiumbatteri-Eksplosionsfare ved fejlagtig hndterin

6、g. Udskiftning m kun ske med batteri af samme fabrikat og type. levr det brugte batteri tilbagetil leverandren.VARNINGExplosionsfara vid felaktigt batteribyte.Anvnd samma batterityp eller en ekvivalent typ som rekommenderas av apparattillverkaren.Kassera anvnt batteri enligt fabrikantens instruktion

7、.VAROITUSParisto voi rjht, jos se on virheellisesti asennettu.Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppiiin.Hvit kytetty paristo valmistajan ohjeiden mukaisesti.The following information complies with Dutch official Gazette 1995. 45; ESSENTIALS OF ORDER ON THE COLLECTION OF BAT

8、TERIES. Please refer to the diassembly procedure for the removal of Back-up Battery. Leest u voor het verwijderen van de backup batterij deze beschrijving.電池取扱注意電池誤交換爆発危険。交換場合、指定部品使用。IMPORTANT NOTICEThis manual has been provided for the use of authorized Yamaha Retailers and their service personnel.

9、 It has been assumed that basicservice procedures inherent to the industry, and more specifically Yamaha Products, are already known and understood by the users,and have therefore not been restated.WARNING :Failure to follow appropriate service and safety procedures when servicing this product may r

10、esult in personal injury,destruction of expensive components and failure of the product to perform as specified. For these reasons, we adviseall Yamaha product owners that all service required should be performed by an authorized Yamaha Retailer or theappointed service representative.IMPORTANT :This

11、 presentation or sale of this manual to any individual or firm does not constitute authorization certification,recognition of any applicable technical capabilities, or establish a principal-agent relationship of any form.The data provided is belived to be accurate and applicable to the unit(s) indic

12、ated on the cover. The research engineering, and servicedepartments of Yamaha are continually striving to improve Yamaha products. Modifications are, therefore, inevitable and changes inspecification are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exi

13、st, please contact thedistributors Service Division.WARNING :Static discharges can destroy expensive components. Discharge any static electricity your body may have accumulatedby grounding yourself to the ground bus in the unit (heavy gauge black wires connect to this bus.)IMPORTANT :Turn the unit O

14、FF during disassembly and parts replacement. Recheck all work before you apply power to the unit.WARNING: CHEMICAL CONTENT NOTICE!The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (Where applicable)components may also contain tra

15、ces of chemicals found by the California Health and Welfare Agency (and possibly other entities) to causecancer and/or birth defects or other reproductive harm.DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHAT SO EVER!Avoid prolonged, unprotected cont

16、act between solder and your skin! When soldering, do not inhale solder fumes or expose eyes to solder/flux vapor!If you come in contact with solder or components located inside the enclosure of this product, wash your hands before handling food.印商品、安全維持重要部品。交換場合、安全必指定部品使用。WARNINGRadioFans.CN 收音机爱 好者

17、资料库AD8HR3SPECIFICATIONS Analog InputINPUT 18XLR-3-31BalancedAD converter24-bit linear128-times Oversampling Digital OutputDIGITAL OUT A, BD-Sub 25-pinBalanced ConnectorsWORD CLOCK IN (75 Auto Terminated): BNCWORD CLOCK OUT :BNCHA REMOTE (PC-RS422):D-Sub 9-pin with PC-RS422 switchHA REMOTE (RS422):D-

18、Sub 9-pin Controls+48V Master SwitchGAIN/DATA encoder KeysWORD CLOCKSELECT1SELECT8+48VHPF LEDsWORD CLOCK44.1kHz/48kHz/88.2kHz/96kHz/WORD CLOCK IN/DIGITAL OUT ALEVEL METER 188x6 SegmentSELECT 18+48V 18, Selected ChannelHPF 18, Selected ChannelGAIN/DATA Display 7seg x3 FunctionsHPF FrequencyGAIN20Hz60

19、0Hz62 dB to +10 dB (1 dB step)INPUT GAIN TRIM1.5 dB to 1.5 dB (0.1 dB step)AES/EBU Higher Sampling Rate Data Output FormatDouble Speed / Double ChannelPanel LockPanel Brightness7 steps MiscellaneousPower Requirements100 V 35 W, 50/60 Hz120 V 35 W, 60 Hz230 V 35 W, 50 HzJ:U/C:Others:(J: 3P/2P AC Plug

20、 Adaptor) Dimensions (HxDxW)45 x 383.5 x 480 mmNet Weight5 kgOperation free-air temperature range5 to 40 CStorage temperature20 to 60 CAccessoriesAC CableRubber Feet x 4Owners ManualGeneral SpecificationsI/O CharacteristicsAnalog Input SpecificationsDigital I/O SpecificationsInput T erminalsGAINActu

21、al Load ImpedanceFor Use With NominalInput levelConnectorNominalMax. before clipINPUT 1862 dB3k50600 Mics & 600 Lines62 dBu (615 V)42 dBu (6.15 mV)XLR-3-31 type (Balanced)*1*1. XLR-3-31 type connectors are balanced. (1=GND, 2=HOT, 3=COLD)*2. In these specifications, when dBu represents a specific vo

22、ltage, 0dBu is referenced to 0.775 Vrms.*3. AD converters are 24-bit linear, 128-times oversampling.+10 dB+10 dBu (2.45 V)+30 dBu (24.5 V)Input/Output TerminalsFormatLevelConnector in ConsoleInput 1/2 (word clock only)*1Output 18 x 2*1. Input 1/2 on DIGITAL OUT A can be selected for word clock maste

23、r.*2. Fs= 44.1, 48, 88.2 and 96 kHz is supported.*3. Double Channel mode is supported (Fs= 88.2, 96 kHz).*4. When locked to the word clock received via WORD CLOCK IN, the word clock will be output from WORD CLOCK OUT.AES/EBURS422D-SUB 25p FemaleHA REMOTE x 2RS422D-SUB 9p MaleWORD CLOCK INTTL / 75BNC

24、WORD CLOCK OUTTTL / 75BNC（総合仕様）4AD8HRElectrical CharacteristicsMeasured at DIGITAL OUT. Output impedance of signal generator: 150. Frequency Response Gain Error 1kHz Total Harmonic Distortion Hum & Noise EIN Measured with DA824 EIN=Equivalent Input Noise Dynamic Range Crosstalk 1kHz Phantom Voltagef

25、s=44.1kHz or 48kHz 20Hz20kHz, with reference to 1dBFs 1kHzfs=88.2kHz or 96kHz20Hz-40kHz, with reference to 1dBFs 1kHzfs=44.1kHz or 48kHzfs=88.2kHz or 96kHzfs=44.1kHz, 48kHz, 88.2kHz or 96kHz* Hum & Noise are measured with an A-weighting filter. * EIN is measured with a 6 dB/octave filter 12.7 kHz; e

26、quivalent to a 20 kHz filter with infinite dB/octave attenuation. * Dynamic Range is measured with an A-weighting filter.InputOutputConditionsMINTYPMAXUNITSINPUT 18DIGITAL OUT 18GAIN: 62 dB31dBINPUT 18DIGITAL OUT 18GAIN: +10 dB1.51dBInputOutputConditionsMINTYPMAXUNITSINPUT 18DIGITAL OUT 18GAIN: 62 d

27、B31dBINPUT 18DIGITAL OUT 18GAIN: +10 dB1.51dBInputOutputConditionsMINTYPMAXUNITSINPUT 18DIGITAL OUT 18GAIN: 62dB to +10dB11dBInputOutputConditionsMINTYPMAXUNITSINPUT 18DIGITAL OUT 181 dBFs output 1kHz GAIN: 62 dB0.05%INPUT 18DIGITAL OUT 181 dBFs output 1kHz GAIN: +10 dB0.01%InputOutputConditionsMINT

28、YPMAXUNITSINPUT 18DIGITAL OUT 181 dBFs output 1kHz GAIN: 62 dB0.05%INPUT 18DIGITAL OUT 181 dBFs output 1kHz GAIN: +10 dB0.01%InputOutputConditionsMINTYPMAXUNITSINPUT 18DIGITAL OUT 18Rs=150, GAIN: 62 dB80dBFsINPUT 18DIGITAL OUT 18Rs=150, GAIN: +10 dB110dBFsInputOutputConditionsMINTYPMAXUNITSINPUT 18D

29、IGITAL OUT 18Rs=150, GAIN: 62 dB128dBInputOutputConditionsMINTYPMAXUNITSINPUT 18DIGITAL OUT 18GAIN: +10 dB110dBFrom/To To/FromConditionsMINTYPMAXUNITSCH NCH (N-1) or (N+1)adjacent inputs GAIN: +10dB80dBOutputConditionsMINTYPMAXUNITSINPUT 18hot & cold: No load464850VAD8HR5LED Level MeterDIGITAL OUT A

30、/B Pin Assignment TableSignalData In Ch*1*1. Data In Ch can be received only on DIGITAL OUT A.Data Out ChOpenGND1-21-23-45-67-8PinHot156782, 3, 4, 9,11, 15, 16, 1710, 12, 13, 22, 23, 24, 25Cold141819202125D-SUB 25 Pin female （）14131D-SUB 9 Pin male123456789（）HA REMOTE Pin Assignment TablePinSignal N

31、amePinSignal Name1N.C.6RX+/DSR*12RX-/RXD*1*1. RS422/PC7RTS3TX-/TXD*18CTS4TX+/DTR*19N.C.5GNDInputOutputConditionsMINTYPMAXUNITSINPUT 18DIGITAL OUT 18OVER red LED: ON0dBFs6 amber LED: ON6dBFs12 amber LED: ON12dBFs18 amber LED: ON18dBFs30 green LED: ON30dBFs48 green LED: ON48dBFsParameterConditionsMINT

32、YPMAXUNITSSampling FrequencyFrequency RangeNormal Rate39.6950.88kHzDouble Rate79.38101.76kHzJitter of PLLDIGITAL IN fs=44.1kHz10nsDIGITAL IN fs=48 kHz10nsDIGITAL IN fs=39.6950.88 kHz20nsDIGITAL IN fs=88.2 kHz10nsDIGITAL IN fs=96 kHz10nsDIGITAL IN fs=79.38101.76 kHz20nsInternal ClockFrequencyword clo

33、ck : int 44.1 kHz44.1kHzword clock : int 48 kHz48kHzword clock : int 88.2 kHz88.2kHzword clock : int 96 kHz96kHzAccuracyword clock : int 44.1 kHz50ppmword clock : int 48 kHz50ppmword clock : int 88.2 kHz50ppmword clock : int 96 kHz50ppmJitterword clock : int 44.1 kHz5nsword clock : int 48 kHz5nsword

34、 clock : int 88.2 kHz5nsword clock : int 96 kHz5nsSignal Delayanalog input to digital outputfs=48 kHz0.9msfs=96 kHz0.45ms6AD8HRDIMENSIONS114804419353.5383.5350655025045（単位）（付属脚取付時*）When the included rubber feet are attached.Unit: mm Top View Side view Front view（寸法図）AD8HR7PANEL LAYOUTq WORD CLOCK in

35、dicatorsw WORD CLOCK buttone +48V indicatorsr HPF indicatorst Level metersy Channel Select buttonsu +48V buttoni HPF buttono Gain display!0 Gain control!1 +48V MASTER switch!2 POWER switch!3 Grounding screwswitch!4 AC IN connector!5 HA REMOTE connector 1!6 PC RS422 switch!7 HA REMOTE connector 2!8 D

36、IGITAL OUT A/B connector!9 WORD CLOCK OUT connector0 WORD CLOCK IN connector1 INPUT 18 connectors Top Panel Rear Panel（）（WORD CLOCK ）（WORD CLOCK ）（+48V ）（HPF ）（）（選択）（+48V ）（HPF ）（GAIN ）（GAIN ）（+48V MASTER ）（POWER ）（用）（AC IN 端子）（HA REMOTE 1 端子）（PC RS422 ）（HA REMOTE 2 端子）（DIGITAL OUT A/B 端子）（WORD CLOC

37、K OUT 端子）（WORD CLOCK IN 端子）（INPUT1 8 端子）（）（）8AD8HRCIRCUIT BOARD LAYOUTDCMAINCOMBSWSUBPN(PNCOM)(PNCOM)(PNCOM)(PNCOM)(PNCOM)HIC-HA（）AD8HR9DISASSEMBLY PROCEDURE1. (所要時間: 約3 分)1-1.5009本5306本外、外。 (図1)2.SUB (所要時間: 約4分)2-1.外。 (1項参照)2-2.A2本B2本外、SUB外。 (写真 1)500: Bind Head Tapping Screw-S3.0X6 MFZN2BL (EP6302

38、10)530: Bind Head Tapping Screw-S4.0X8 MFZN2BL (VI693100)Fig.1Top cover500（ ） 500530530500500 Top view Rear view Side view Side view3.COMB (所要時間: 約4 分)3-1.外。 (1項参照)3-2.SUB外。 (2項参照)3-3.C2本外、COMB 外。(写真 1)ABDC Rear viewPhoto. 1A, D: Hex Locking ScrewJFS-2.6S-BIWL (VS604900)B, C: Hex Locking Screw（分解手順）

39、1.Top cover (Time required: About 3 minute)1-1.Remove the nine (9) screws marked 500 and thesix (6) screws marked 530. The top cover can thenbe removed. (Fig.1)2.SUB Circuit board(Time required: About 4 minute)2-1.Remove the top cover. (See Procedure 1.)2-2.Remove the two (2) screws marked A and the

40、 two(2) screws marked B. The SUB circuit board canthen be removed. (Photo. 1)（）（）（図1）3.COMB Circuit board(Time required: About 4 minute)3-1.Remove the top cover. (See Procedure 1.)3-2.Remove the SUB circuit board. (See Procedure 2.)3-3.Removr the two (2) screws marked C. The COMBcircuit board can th

41、en be removed. (Photo. 1)（写真1）（六角）（六角）10AD8HR70: Bind Head Tapping Screw-S3.0X6 MFZN2BL (EP630210)4.MAIN (所要時間: 約7 分)4-1.外。 (1項参照)4-2.SUB外。 (2項参照)4-3.COMB外。 (3 項参照)4-4.50 16 本、 60 1 本、 70 7 本、D2 本外、MAIN外。(写真1, 2, 3)MAIN外時、 INPUT端子先外、外。1. 外工具 A 差込。(写真4)2. B 抜取外。 (写真4)707070MAINBattery VN103500VN10360

42、0(Battery holder for VN103500)Notice for back-up battery removalPush the battery as shown in figure,then the battery will pop up.Druk de batterij naar beneden zoalsaangeven in de tekening de batterijspringt dan naar voren.BatteryBattery holderLithium Battery（電池）Photo. 3 Rear viewPhoto. 2 Top view50:

43、 Bind Head Tapping Screw-B2.6X8 MFZN2BL (VB096700)60: Bind Head Tapping Screw-B3.0X8 MFZN2BL (EP600190)5.DC (所要時間: 約3 分)5-1.外。 (1項参照)5-2.2304 本外、DC外。(写真 5)506050MAINMAINTool (AAX52710)Tool (AAX52710)Tool (AAX000021)（ ） Push leverABPhoto. 4（）4.MAIN Circuit board(Time required: About 7 minute)4-1.Remo

44、ve the top cover. (See Procedure 1.)4-2.Remove the SUB circuit board. (See Procedure 2.)4-3.Remove the COMB circuit board. (See Procedure 3.)4-4.Remove the sixteen (16) screws marked 50, thescrew marked 60, the seven (7) screws marked 70and the two (2) screws marked D. The MAIN circuitboard can then

45、 be removed. (Photo. 1, 2, 3)First of all, remove the push lever of the INPUTterminal for easy removal of the main circuit board.1.Insert with a latch-removing tool as shown in (A).(Photo 4)2.Remove the push lever, using a knob extractor leveras shown in (B). (Photo 4)（写真3）（写真2）（）（）5.DC Circuit boar

46、d(Time required: About 3 minute)5-1.Remove the top cover. (See Procedure 1.)5-2.Remove the four (4) screws marked 230. The DCcircuit board can then be removed. (Photo. 5)（写真4）AD8HR116.電源 (所要時間: 約4 分)6-1.外。 (1項参照)6-2.1304本外、電源外。(写真 6)7. Assy (所要時間: 約3 分)7-1.外。 (1項参照)7-2.2102本、 2201本外、Assy 外。(写真7, 8)2

47、10220AC inlet assembly（Assy）130Power supply unit（電源 ） 130: Bind Head Tapping Screw-S3.0X6 MFZN2BL (EP630210)Photo. 6 Top view210: Bind Head Tapping Screw-B3.0X8 MFZN2BL (EP600190)Photo. 7220: Bind Head Screw4.0X8 MFZN2BL (EG340360)Photo. 8230DCPhoto. 5 Top view230: Bind Head Tapping Screw-S3.0X6 MFZ

48、N2BL (EP630210)6.Power supply unit(Time required: About 4 minute)6-1.Remove the top cover. (See Procedure 1.)6-2.Remove the four (4) screws marked 130. The powersupply unit can then be removed. (Photo. 6)7.AC inlet assembly(Time required: About 3 minute)7-1.Remove the top cover. (See Procedure 1.)7-

49、2.Remove the two (2) screws marked 210 and thescrew marked 220. The AC inlet assembly can thenbe removed. (Photo. 7, 8)（）（写真6）（）（写真7）（小）（写真8）（写真5）（）12AD8HR300300PN9.SW (所要時間: 約4分)9-1.外。 (1項参照)9-2.外。 (8項参照)9-3.PSW外。 (写真12)9-4.2802 本外、SW外。(写真12)10.PN (所要時間: 約4 分)10-1.外。 (1項参照)10-2.外。 (8項参照)10-3.3003 本

50、外、PN 外。(写真13)470460 Bottom view Top view460: Flat Head Screw-S3.0X6 MFAN2Y (WB451000)Photo. 9470: Bind Head Tapping Screw-S3.0X6 MFZN2BL (EP630210)Photo. 10 Front viewFront panel（）Knob assembly（Assy）Hexagonal nut280（特殊六角）Button PSW（PSW）Photo. 13300: Bind Head Tapping Screw-S3.0X6 MFZN2BL (EP630210)P