Teac-Tascam322-tape-sm 维修电路原理图.pdf

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1、Effective : AUGUST, 2001S-0044SERVICE MANUALCONTENTS1. SPECIFICATIONS 22. ADJUSTMENT AND CHECKS 43. BLOCK DIAGRAM 114. EXPLODED VIEWS AND PARTS LIST 135. PC BOARDS AND PARTS LIST 186. INCLUDED ACCESSORIES 24目次1. 仕様 22. 調整確認 43. 114. 分解図 135. 基板図 186. 付属品 243 32 22 2Double Auto Reverse Cassette DeckI

2、NSTRUCTIONS FOR SERVICE PERSONNELBEFORE RETURNING APPLIANCE TO THE CUSTOMER, MAKE LEAKAGE-CUR-RENT OR RESISTANCE MEASUREMENTS TO DETERMINE THAT EXPOSEDPARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT.RadioFans.CN 收音机爱 好者资料库21. SPECIFICATIONS仕様TASCAM 322Tape : Compact cassette tape C-30/60/90(N

3、ormal/High Position/Metal)Track Format : 4-track, 2-channelHead Configuration : 4-track, 2-channel ;Record/repro combination rotary head(DECK 1 x1, DECK 2 x1, permally)Erase head (DECK 1 x1, DECK 2 x1, ferrite)Motor : DC servo capstan motor (DECK 1 x1, DECK 2 x1)DC reel motor (DECK 1 x1, DECK 2 x1)T

4、ape Speed : 4.76 cm/sec (1.87 ips) or 9.5 cm/sec (3.74 ips) atHIGH SPEED dubbingPitch Control : approx. +/ 10 %Line Input - RCA jack :Nominal Input Level : 10 dBV (0.3V)Minimum Input Level : 18 dBV (0.1V)Input Impedance : 24k ohmsLine Output - RCA jack :Nominal Output Level : 5 dBV (0.6V)Output Impe

5、dance : 1.5k ohmsCascade Output - RCA jack :Nominal Output Level : 10 dBV (0.3V)Output Impedance : 100 ohmsHeadphone Output - 1/4 jack :Output Power : 7 mW max./32 ohmsBias/Erase Frequency : 100 kHzRepro Equalization :3180 s + 70 s (High Position/Metal)3180 s + 120 s (Normal)Reference Record Level :

6、 250 nWb/m = 0 VU (315 Hz) (JEITA)EXT CONTROL : 3.5 mm mini jackREMOTE IN (FROM RC-322A) : 2.5 mm mini-mini jackREMOTE IN (SERIAL) : RC-232CPower Requirements :USA/Canada/General Export Model :120/230 V AC (50-60 Hz), switchableU.K./Europe : 230 V AC (50 Hz)Australia : 240 V AC (50 Hz)Consumption :

7、33 WattsWeight : 7.8 kg (17.19 lbs)Typical PerformanceSpeed Accuracy : Less than +/3.0%Wow and Flutter : Less than 0.15% WRMSFast Winding Time : 120 sec. (approx.) with C-60 cassetteFrequency Response, Overall (JEITA, without NR) :63 Hz to 18 kHz, +/3 dB (Metal)63 Hz to 16 kHz, +/ 3 dB (High Positio

8、n)63 Hz to 16 kHz, +/3 dB (Normal)Distortion : Less than 2.5%, at 1kHz, l60 nWb/m (Metal)使用：C30 C90（Normal, High Position, Metal）形式：4、2構成：録音再生： （DECK1 X 1,DECK 2 X 1）（）消去： （DECK1 X 1,DECK 2 X 1）（）構成：DC（DECK1 X 1,DECK 2 X 1）：DC（DECK 1 X 1,DECK 2 X 1）速度：4.8 cm/sec., 9.5 cm/sec.（時）：約10%入力：RCA規定入力： 10 d

9、BV（0.3V）最小入力： 18 dBV（0.1V）入力：24 k出力：RCA規定出力：5 dBV（0.6V）出力：1.5 k出力：RCA規定出力： 10 dBV（0.3V）出力：10 出力：6.3 mm最大出力：最大7 mW32 負荷消去周波数：100 kHz再生：自動検出3,180 s 70 s（High Position, Metal）3,180 s 120 s（Normal）基準録音：250 nWb/m0 VU（315Hz） （JEITA）EXT CONTROL 端子：3.5 mmREMOTE IN（FROM RC322A）端子：2.5 mmREMOTE IN（SERIAL）端子：RS

10、232C電源：100 VAC, 5060 Hz消費電力：33 W質量：7.8 kg定格速度偏差：3.0%：0.15%以内（JIS WRMS）早巻時間：約120 秒以内（C60 使用時）総合周波数特性：63 Hz 18 kHz 3 dB JEITA（Metal）63 Hz 16 kHz 3 dB JEITA（High Position）63 Hz 16 kHz 3 dB JEITA（Normal）歪率：2.5%以下1 kHz 160nWb/m（Metal）RadioFans.CN 收音机爱 好者资料库3TASCAM 322SN 比：59 dB（NR Out 3% THDWTD） （Metal）6

11、9 dB（Dolby B NR In CCIR ARM）79 dB（Dolby C NR In CCIR ARM）：30 dB 以上（1 kHz）消去率：65 dB 以上（1 kHz ）付属品RC322A（5m）（ M54、4）仕様、0 dBV=1V表示。実際電圧（）示。仕様外観、 改善予告変更。及HX実施権基製造。HX考案。 、 DOLBY 、D記号及HX PRO登録商標。483 mm (19)465 mm (18-3/8)435 mm (17-1/8)12.5 mm57.2 mm140 mm (5-1/2)305 mm (12)6.4 mm8 mm(1/4)132 mm (5-3/16)S

12、ignal-to-Noise Ratio :59 dB (without NR, ref. 3% THD, WTD) (Meta)69 dB (with Dolby-B NR, CCIR ARM) Noise level79 dB (with Dolby-C NR, CCIR ARM) Noise levelChannel Separation : Better than 30 dB (at 1 kHz)Erase Ratio : Better than 65 dB (at 1 kHz)Applicable Electromagnetic Environment : E4Peak Inrush

13、 Current : 1.2 AAccessoriesRemote control unit (RC-322A) x 1Rack mounting screw kit x 1 In these specifications, 0 dBV is referenced to 1 volt. Actualvoltage levels are shown in parenthesis. Improvements may result in specifications or feature changeswithout notice.Dolby noise reduction and HX Pro h

14、eadroom extensionmanufactured under license from Dolby LaboratoriesLicensing Corporation. HX Pro originated by Bang &Olufsen.“DOLBY”, the double-D symbol and “HX PRO” aretrademarks of Dolby Laboratories Licensing Corporation.Dimensional Drawings 寸法図42. ADJUSTMENT AND CHECKS調整確認TASCAM 3222-1. 機構部調整確認

15、2-1-1. 1. Fig. 2-1接続。2. MTT-111N再生。3. 値0.15 %（WRMS）以内。2-1-2. 速度1. Fig. 2-1周波数接続。2. MTT-111N 巻始部 FWD 方向再生。3. 周波数値下表範囲内 MAIN PCB 各調整VR（Fig. 2-2）調整。2-1. Mechanical Adjustment And Checks2-1-1. Wow and flutter1. Connect a wow-and-flutter meter to the deck as shown inFig. 2-1.2. Load and play a MTT-111N t

16、est tape.3. Check that the readings on the wow-and-flutter meter is with-in 0.15 % (WRMS).2-1-2. Tape speed1. Connect a frequency counter to the deck as shown in Fig. 2-1.2. Load a MTT-111N test tape and play in FWD direction thebegining of the test tape.3. Adjust each variable resistor on the MAIN

17、PCB (Fig.2-2) toget the following figures.Frequency CounterWow & Flutter Meter322LRLINE OUTFig. 2-1ADJUSTMENT VR調整VRADJUSTMENT VALUE調整値DECK 1HIGH speedR516000 6020 HzNORMAL speedR523000 3010 HzDECK 2HIGH speedR536000 6020 HzNORMAL speedR543000 3010 HzAt first, adjust HIGH tape speed.Short TP51 on th

18、e MAIN PCB (Fig. 2-2) to get the HIGHtape speed.(Short TP51 only after having started the tape to play at nor-mal speed, and disconnect it before stopping the tape.)HIGH speed 先調整。MAIN PCB 内 TP51（Fig. 2-2）、HIGH speed 。（TP51再生中、STOP前。 ）5TASCAM 3224. 巻始巻終再生、変動幅確認。HIGH speed : 90 Hz 以内NORMAL speed : 45

19、 Hz 以内2-1-3. 1. ：測定用 MTT-8111 再生値下記通。 （右台） ：3070 g.cm （左台） ：26 g.cm2. FF REW：測定用 MTT-8242 装着、FF 動作 REW 動作起動測定。規格値次通。FF （右台） ： 90 180 g.cmREW （左台） ： 90 180 g.cm4. In play mode, check that the following value (speed drifting)are obtained at the biginning and the end of tape.HIGH speed : within 90 HzNO

20、RMAL speed : within 45 Hz2-1-3. Reel torque1. Take-up torque/back tension torque:The torque values when the test tape MTT-8111 for measur-ing torques is played back should be as follows:Take-up torque (right reel) : 30 to 70 g.cmBack tension torque (left reel) : 2 to 6 g.cm2. FF/REW torque:Load the

21、test tape MTT-8242 for measuring torques, thenmeasure the starting torque when the unit is in FF and REWoperation. The standard values are as follows:Torque in FF mode (right reel) : 90 to 180 g.cmTorque in REW mode (left reel) : 90 to 180 g.cm6TASCAM 3222-2. 部調整確認2-2-1. 注意1. 部調整確認前、走行系消磁清掃行。2. 特指定限

22、、調整 Lch、Rch 順序行。尚、R11/R21 記回路番号Lch/Rch示。3. 0 dB0.775 V表記。4. 測定使用計、入力 1M以上。5. 特指定場合、調整確認 FWD 方向行。2-2-2. 調整測定箇所2-2. ELECTRICAL ADJUSTMENT AND CHECKS2-2-1. Precautions1. Before performing adjustments and checks clean and demag-netize the entire tape path.2. In general, adjustments and checks are made i

23、n the order ofLch then Rch. Double REF. Nos. indicate Lch /Rch.(Example ; R11/R21)3. 0 dB is referenced to 0.775 V.4. The AC voltmeter used in the procedures must have an inputimpedance of 1 M or more.5. Unless specified otherwise, adjustments and checks are medein FWD direction.2-2-2. Adjustment an

24、d check locationsFig. 2-2 Adjustment and check locations7TASCAM 322ITEM項目SETTING設定PLAYBACK SIGNAL再生信号ADJUSTMENT調整MEASUREMENT測定1. REC/PLAYhead azimuth録/再Connection : Fig. 2-4Check/adjust in FWD,REV respectivelyFWD, REV実施MTT-150CheckLINE OUT :Phase: within 452. Specified outputlevel規定出力AC voltmeter co

25、nnect-ed between TP termi-nal and GND.TP端子GND間AC電圧計接続FWD PLAYMTT-150R11/R21(MAIN PCB)TP11/TP21(MAIN PCB) :6 dB (388 mV)3. Meter levelMTT-150Check onlyLevel meter :0 dB 1 dB4. PHONES outputlevelPHONES出力Connection : Fig. 2-7PHONES control :Max.MTT-150Check onlyPHONES OUT :19 dB 3 dB(61.5 123 mV)6. Pla

26、yback SN ratio再生SN比Connection : Fig. 2-3Leader tape with 70 (METAL) type case部再生Check only47 dB min.5. Playback frequencyresponse再生周波数特性Connection : Fig. 2-3MTT-25702Check onlyFig. 2-8REMARKS備考Refer to Fig. 2-6DECK 18 loadRtio of ref. level tonoise level規定出力比OscillatorDistortion AnalyzerOscilloscope

27、AC voltmeter3221kHz FilterLS1RLRLINE INLINE OUTS22-2-3. Playback performance 再生系Mode: PLAYDOLBY NR switch: OFFMTT-25702(12.5 kHz)Azimuth screwsof R/P head(Fig.2-5)録/再調整Max. output atL & RchL & R最大出力FWD PLAY,REV PLAYMTT-150CheckLINE OUT :3.5 dB 1 dB(461 581 mV)R31/R41TP31/TP41 :6 dB (388 mV)DECK 2Fig

28、. 2-3 Basic test setup8TASCAM 3222-2-4. Monitor performance 系Mode: REC PAUSESignal input: LINE INDOLBY NR switch: OFFITEM項目SETTING設定INPUT SIGNAL入力信号ADJUSTMENT調整MEASUREMENT測定7. Min. LINE inputlevel最小入力Connection : Fig. 2-3INPUT control : MAX.REC BAL control :Center400 Hz/19 dB(87 mV)Check onlyLINE OU

29、T :3.5 dB 3 dB(367 731 mV)8. Specified LINE inputlevel規定入力Connection : Fig. 2-3REC BAL control :Center400 Hz/9 dB(275 mV)INPUT controlLINE OUT :3.5 dB(518 mV)9. Monitor SN ratioSN比Connection : Fig. 2-3No signal無信号Check only60 dB min.REMARKS備考After adjusting, do notmove (Specific posi-tion)調整後INPUT c

30、on-trol動（規定位置）Ratio of ref. level tonoise level規定出力比9TASCAM 3222-2-5. Recording performance 録音系Mode: REC/PLAY （unless otherwise specified 特指示場合除）Signal input: LINE INMeasurement point: LINE OUT（unless otherwise specified 特指示場合除）DOLBY NR switch: OFF（unless otherwise specified 特指示場合除）INPUT control: Sp

31、ecified position 規定位置（item 8）REC BAL control: Center position 位置ITEM項目SETTING設定INPUT SIGNAL入力信号ADJUSTMENT調整MEASUREMENT測定10. Bias OSC発振器Connection : Fig. 2-9Tape : MTT-5513Mode : RECNo signal無信号L101(EQ-BIAS PCB)P102-2(EQ-BIAS PCB) :100 KHz11. Step up coilDC voltmeter connectedbetween TP terminaland G

32、ND.TP端子GND間DC電圧計接続Tape : MTT-5513Mode : RECNo signal無信号L104/L204(EQ-BIAS PCB)TP12/TP13(EQ-BIAS PCB) :Min. DC voltageDC電圧最小12. Record bias録音Connection : Fig. 2-3Tape : MTT-5513250 Hz/34 dB,10 kHz/34 dB(15.5 mV)R12/R22(EQ-BIAS PCB)Nearly equal level atboth frequencies両周波数出力等調整REMARKS備考DECK 1DECK 1DECK

33、 113. MPX filterMPXConnection : Fig. 2-3DOLBY NR switch :B or CMode : REC19 kHz 10 Hz/12 dB(195 mV)L101/L201(MAIN PCB)30 dB min.Ratio of ref. levelto signal規定出力比14. Record leveladjustment録音調整Connection : Fig. 2-3Tape : MTT-5513400 Hz/12 dB(195 mV)R11/R21(EQ-BIAS PCB)6.5 dB(367 mV)DECK 115. Record le

34、velcheck録音確認Connection : Fig. 2-3Tape : MTT-5563Tape : MTT-5572400 Hz/12 dB(195 mV)Check only6.5 dB 1 dB(327 411 mV)16. Total harmonicdistortion総合歪率Connection : Fig. 2-3Tape : MTT-5513Tape : MTT-5563Tape : MTT-5572400 Hz/9 dB(275 mV)Check only2.5 % or less17. Overall frequencyresponse総合周波数特性Connecti

35、on : Fig. 2-3Tape : MTT-5513Tape : MTT-5563Tape : MTT-557240 Hz 12.5 kHz/34 dB(15.5 mV)Check onlyFig. 2-1018. Overall SN ratio総合SN比Connection : Fig. 2-3Tape : MTT-5513Tape : MTT-5563Tape : MTT-5572No signal無信号Check onlyNORMAL : 44 dB min.CrO2 : 45 dB min.METAL : 46 dB min.Ratio of ref. levelto noise

36、 level規定出力比L301P302-2 : 100 KHzDECK 2L304/L404TP32/TP33 :Min. DC voltageDC電圧最小DECK 2R32/R42DECK 2L301/L401R31/R41DECK 2MTT-5513 : for NORMALMTT-5563 : for CrO2MTT-5572 : for METALDECK 1DECK 210TASCAM 322ITEM項目SETTING設定INPUT SIGNAL入力信号ADJUSTMENT調整MEASUREMENT測定19. Erase efficiency消去率Connection : Fig.

37、2-3(1 kHz B.P.F. in)Tape : MTT-55721 kHz/+1 dB(870 mV)Check only65 dB min.20. REC MUTEfunctionREC MUTE効果Connection : Fig. 2-3(1 kHz B.P.F. in)Tape : MTT-55721 kHz/+1 dB(870 mV)Check only55 dB min.21. ChannelseparationConnection : Fig. 2-3(1 kHz B.P.F. in)Tape : MTT-5563L ch : 1 kHz/9 dB(275 mV)R ch

38、: No signalCheck only30 dB min.REMARKS備考22. Adjacent trackcrosstalk間Connection : Fig. 2-3Tape : MTT-5513L ch : No signalR ch : 125 Hz/9 dB(275 mV)Check only30 dB min.14. Bias leakage漏Connection : Fig. 2-3Tape : MTT-5513Mode : RECNo signal無信号L102/L202(MAIN PCB)40 dB or less(7.75 mV)DECK 1Find the dif

39、ference between the 1 kHz recorded portion andthe erased portion.1kHz録音部分消去部分出力比Find the difference between the 1 kHz recorded portion andthe REC MUTE portion.1kHz録音部分REC MUTE部分出力比Find the difference between the 1 kHz recorded portion (L ch)and the no signal portion (R ch).1kHz録音部分（Lch）無信号録音部分（Rch）出

40、力比Invert tape and play R ch track. Check leakage level againstthe output reference of previously recrded portion.125Hz録音部分（Rch）再生出力基準、反転再生Rch出力比L302/L402DECK 2113. BLOCK DIAGRAMTASCAM 322R/P HeadPLAYRECDECK 1PB EQEQ ampPB level132INPUTBALLine inMONITORPLAYBACKMETERAmpMETER 21AINPUT-10dBVBALANCED 21A

41、OUTPUTDECK1/COMMONBAL UNBALINPUT-5dBV+4dBuSEPARATECOMMONLine outBuffer AmpSLV muteBuffer ampSLVDUBOFF13 2PB inRec outPlay muteOFF,MASTERDOLBYB-C TYPE NRSYSTEMRec levelRec MUTERec Amp 12BIAS TRAPHX PRO12MECHA1Erase headRS-232C5 9 4 8 3 7 2 6 1Dsub9SBIAS OSC231231EXT CONTROLINOUT231REMOTERC-322ASLVSLV

42、BAL I/OLA-322MASTEROFF 21ACASCADE OUTPUTOUTPUTDECK1/COMMON(OPTION)-10dBV+4dBu 12 12 12 1212MIXRHP AmpPHONES OUTPHONESMAX 7mW/32 ohmPHONE PCBMINIMINI MINICONTROL2.RxDATA3.TxDATA5.GNDR/P HeadPLAYRECDECK 2PB EQRec AmpEQ ampPB level132PB inLine outINPUTBALDOLBYLine inMONITORPLAYBACKMETERAmpSEPARATECOMMO

43、NIN/OUT 21A 21AINPUTMETER-10dBVDECK2BALANCEDOUTPUTBAL UNBALINPUT-5dBV+4dBuRec level13 2Rec outPlay muteB-C TYPE NRSYSTEMRec MUTE 12BIAS TRAPHX PRO12Erase headMECHA2BIAS OSCBAL I/OLA-322(OPTION)OUTPUT+4dBuDECK212TASCAM 322PARTS LIST SECTIONNOTES PC boards shown are viewed from parts side. Parts marke

44、d with *require longer delivery time. The parts with no reference number or no parts number in theexploded views are not supplied. As regards the resistors and capacitors, refer to the circuit dia-grams contained in the manual.Parts marked with this sign are safety critical components.They must be r

45、eplaced with identical components - refer to theappropriate parts list and ensure exact replacement. Parts of mark can be used only with the version designated. J : JAPAN K : KOREA A : AUSTRALIA E : EUROPE UK : U.K. US/C/GE : U.S.A./CANADA/GENERAL EXPORTEXPORT注意 基板部品面示。 印部品納期若干。了承。 分解図部番部品及品番部品供給。 標

46、準抵抗、省略。回路図参照。 安全重要部品。交換時必指定部品使用。 仕向先 J : JAPAN K : KOREA A : AUSTRALIA E : EUROPE UK : U.K. US/C/GE : U.S.A./CANADA/GENERAL EXPORT4. EXPLODED VIEWS AND PARTS LISTEXPLODED VIEW-113分解図TASCAM 322EXPLODED VIEW-1REF.NO.PARTS NO.DESCRIPTIONREMARKS1- 1 9260259100BONNET 1- 2 * 9260293700RACK MOUNTING 1- 3 *

47、 9260158500TR BRACKRT 1- 4 * 9145356000GATHER PCB C ASSY J,K,A,UK * 9145356050GATHER PCB C ASSY E * 9145356093GATHER PCB C ASSY US/C/GE 1- 5 9125145500POWER TRANSFORMER,PZ-J2046 1- 6 * 9145355000GATHER PCB B ASSY 1- 7 * 9260234300PCB BRACKET A 1- 8 * 9145354001GATHER PCB A ASSY J,US/C/GE * 914535405

48、0GATHER PCB A ASSY K,A,E,UK 1- 9 * E00423900AAC CORD,3A 250V K * 9109026010AC CORD A * 9109026112AC CORD J * 9109025711AC CORD E * 9109027701AC CORD WLTH FUSE UK * 9109029000AC CORD US/C/GE 1-10 * 9121000102BUSHING,#2271 1-11 * 9260349400SUB REAR PANEL 1-12 * 9260231901POWER BUTTON 1-13 * 9260349300

49、MAIN CHASSIS J,K,A,E,UK * 9260365400MAIN CHASSIS US/C/GE 1-14 * 9260127100FOOT 210 1-15 * 9260163900PCB BRACKET 1-16 * 9260151300PCB SUPPORT 1-17 * 9260241000RUBBER (A) 1-31 * 9783053012SCREW,CAP-S M3X12(BLK) 1-32 * 9294209300NYLON WASHER 1-33 * 9783593008SCREW,C-TITE M3X8 (NI-BLK) 1-34 * 9783294010

50、SCREW,BTT-SSB M4X10 1-35 * 9783203014SCREW,BTT-S M3X14 1-36 * 9783213008SCREW BTT-B M3X8 1-37 * 9783203006SCREW,BTT-S M3X6 1-38 * 9783233006SCREW,BTT-S M3X6 (BLK) US/C/GE 1-39 * 9783613008SCREW,BTT-P M3X8 (BLK) 1-40 * 9783103006SCREW,CAP-S M3X6 1-41 * 9260330600D-SUB WASHER,HW-C050MN00 1-42 * 926033