Teac-Tascam322-tape-sm维修电路原理图.pdf

《Teac-Tascam322-tape-sm维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《Teac-Tascam322-tape-sm维修电路原理图.pdf（24页珍藏版）》请在收音机爱好者资料库上搜索。

1、Effective : AUGUST, 2001S-0044 SERVICE MANUAL CONTENTS 1. SPECIFICATIONS 2 2. ADJUSTMENT AND CHECKS 4 3. BLOCK DIAGRAM 11 4. EXPLODED VIEWS AND PARTS LIST 13 5. PC BOARDS AND PARTS LIST 18 6. INCLUDED ACCESSORIES 24 目次 1. 仕様 2 2. 調整確認 4 3. 11 4. 分解図 13 5. 基板図 18 6. 付属品 24 3 32 22 2 Double Auto Rever

2、se Cassette Deck INSTRUCTIONS FOR SERVICE PERSONNEL BEFORE RETURNING APPLIANCE TO THE CUSTOMER, MAKE LEAKAGE-CUR- RENT OR RESISTANCE MEASUREMENTS TO DETERMINE THAT EXPOSED PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT. RadioFans.CN 收音机爱 好者资料库 2 1. SPECIFICATIONS 仕様 TASCAM 322 Tape : Compact

3、 cassette tape C-30/60/90 (Normal/High Position/Metal) Track Format : 4-track, 2-channel Head 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

4、 reel motor (DECK 1 x1, DECK 2 x1) Tape Speed : 4.76 cm/sec (1.87 ips) or 9.5 cm/sec (3.74 ips) at HIGH SPEED dubbing Pitch Control : approx. +/ 10 % Line Input - RCA jack : Nominal Input Level : 10 dBV (0.3V) Minimum Input Level : 18 dBV (0.1V) Input Impedance : 24k ohms Line Output - RCA jack : No

5、minal Output Level : 5 dBV (0.6V) Output Impedance : 1.5k ohms Cascade Output - RCA jack : Nominal Output Level : 10 dBV (0.3V) Output Impedance : 100 ohms Headphone Output - 1/4 jack : Output Power : 7 mW max./32 ohms Bias/Erase Frequency : 100 kHz Repro Equalization : 3180 s + 70 s (High Position/

6、Metal) 3180 s + 120 s (Normal) Reference Record Level : 250 nWb/m = 0 VU (315 Hz) (JEITA) EXT CONTROL : 3.5 mm mini jack REMOTE IN (FROM RC-322A) : 2.5 mm mini-mini jack REMOTE IN (SERIAL) : RC-232C Power Requirements : USA/Canada/General Export Model : 120/230 V AC (50-60 Hz), switchable U.K./Europ

7、e : 230 V AC (50 Hz) Australia : 240 V AC (50 Hz) Consumption : 33 Watts Weight : 7.8 kg (17.19 lbs) Typical Performance Speed Accuracy : Less than +/3.0% Wow and Flutter : Less than 0.15% WRMS Fast Winding Time : 120 sec. (approx.) with C-60 cassette Frequency Response, Overall (JEITA, without NR)

8、: 63 Hz to 18 kHz, +/3 dB (Metal) 63 Hz to 16 kHz, +/ 3 dB (High Position) 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,DE

9、CK 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 dBV（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

10、準録音：250 nWb/m0 VU（315Hz） （JEITA） EXT CONTROL 端子：3.5 mm REMOTE IN（FROM RC322A）端子： 2.5 mm REMOTE IN（SERIAL）端子：RS232C 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 kH

11、z 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 3 TASCAM 322 SN 比： 59 dB（NR Out 3% THDWTD） （Metal） 69 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

12、 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 mm 57.2 mm 140 mm (5-1/2) 305 mm (12)6.4 mm 8 mm (1/4) 132 mm (5-3/16) Signal-to-Noise Ratio : 59 dB (without NR, ref. 3% THD, WTD) (Meta) 69 dB (with Dolby-B NR, CCIR ARM) Noise level 79 dB (with Dolby-C NR, CCIR ARM) No

13、ise level Channel Separation : Better than 30 dB (at 1 kHz) Erase Ratio : Better than 65 dB (at 1 kHz) Applicable Electromagnetic Environment : E4 Peak Inrush Current : 1.2 A Accessories Remote control unit (RC-322A) x 1 Rack mounting screw kit x 1 In these specifications, 0 dBV is referenced to 1 v

14、olt. Actual voltage levels are shown in parenthesis. Improvements may result in specifications or feature changes without notice. Dolby noise reduction and HX Pro headroom extension manufactured under license from Dolby Laboratories Licensing Corporation. HX Pro originated by Bang R11/R21) 3. 0 dB i

15、s referenced to 0.775 V. 4. The AC voltmeter used in the procedures must have an input impedance of 1 M or more. 5. Unless specified otherwise, adjustments and checks are mede in FWD direction. 2-2-2. Adjustment and check locations Fig. 2-2 Adjustment and check locations 7 TASCAM 322 ITEM 項目 SETTING

16、 設定 PLAYBACK SIGNAL 再生信号 ADJUSTMENT 調整 MEASUREMENT 測定 1. REC/PLAY head azimuth 録/再 Connection : Fig. 2-4 Check/adjust in FWD, REV respectively FWD, REV 実施 MTT-150Check LINE OUT : Phase: within 45 2. Specified output level 規定出力 AC voltmeter connect- ed between TP termi- nal and GND. TP端子GND間 AC電圧計接続

17、FWD PLAY MTT-150 R11/R21 (MAIN PCB) TP11/TP21 (MAIN PCB) : 6 dB (388 mV) 3. Meter level MTT-150Check only Level meter : 0 dB 1 dB 4. PHONES output level PHONES出力 Connection : Fig. 2-7 PHONES control : Max. MTT-150Check only PHONES OUT : 19 dB 3 dB (61.5 123 mV) 6. Playback SN ratio 再生SN比 Connection

18、: Fig. 2-3 Leader tape with 70 (METAL) type case 部再生 Check only47 dB min. 5. Playback frequency response 再生周波数特性 Connection : Fig. 2-3MTT-25702Check onlyFig. 2-8 REMARKS 備考 Refer to Fig. 2-6 DECK 1 8 load Rtio of ref. level to noise level 規定出力 比 Oscillator Distortion Analyzer Oscilloscope AC voltmet

19、er 322 1kHz Filter L S1 R L R LINE INLINE OUT S2 2-2-3. Playback performance 再生系 Mode: PLAY DOLBY NR switch: OFF MTT-25702 (12.5 kHz) Azimuth screws of R/P head (Fig.2-5) 録/再 調整 Max. output at L & Rch L & R最大出力 FWD PLAY, REV PLAY MTT-150Check LINE OUT : 3.5 dB 1 dB (461 581 mV) R31/R41 TP31/TP41 : 6

20、 dB (388 mV) DECK 2 Fig. 2-3 Basic test setup 8 TASCAM 322 2-2-4. Monitor performance 系 Mode: REC PAUSE Signal input: LINE IN DOLBY NR switch: OFF ITEM 項目 SETTING 設定 INPUT SIGNAL 入力信号 ADJUSTMENT 調整 MEASUREMENT 測定 7. Min. LINE input level 最小入力 Connection : Fig. 2-3 INPUT control : MAX. REC BAL contro

21、l : Center 400 Hz/19 dB (87 mV) Check only LINE OUT : 3.5 dB 3 dB (367 731 mV) 8. Specified LINE input level 規定入力 Connection : Fig. 2-3 REC BAL control : Center 400 Hz/9 dB (275 mV) INPUT control LINE OUT : 3.5 dB (518 mV) 9. Monitor SN ratio SN比 Connection : Fig. 2-3 No signal 無信号 Check only60 dB m

22、in. REMARKS 備考 After adjusting, do not move (Specific posi- tion) 調整後INPUT con- trol動 （規定位置） Ratio of ref. level to noise level 規定出力比 9 TASCAM 322 2-2-5. Recording performance 録音系 Mode: REC/PLAY （unless otherwise specified 特指示場合除） Signal input: LINE IN Measurement point: LINE OUT（unless otherwise sp

23、ecified 特指示場合除） DOLBY NR switch: OFF（unless otherwise specified 特指示場合除） INPUT control: Specified 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. 2-9 Tape : MTT-5513 Mode : REC No signal 無信号

24、 L101 (EQ-BIAS PCB) P102-2 (EQ-BIAS PCB) : 100 KHz 11. Step up coil DC voltmeter connected between TP terminal and GND. TP端子GND間 DC電圧計接続 Tape : MTT-5513 Mode : REC No signal 無信号 L104/L204 (EQ-BIAS PCB) TP12/TP13 (EQ-BIAS PCB) : Min. DC voltage DC電圧最小 12. Record bias 録音 Connection : Fig. 2-3 Tape : M

25、TT-5513 250 Hz/34 dB, 10 kHz/34 dB (15.5 mV) R12/R22 (EQ-BIAS PCB) Nearly equal level at both frequencies 両周波数出力 等 調整 REMARKS 備考 DECK 1 DECK 1 DECK 1 13. MPX filter MPX Connection : Fig. 2-3 DOLBY NR switch : B or C Mode : REC 19 kHz 10 Hz/ 12 dB (195 mV) L101/L201 (MAIN PCB) 30 dB min. Ratio of ref

26、. level to signal 規定出力 比 14. Record level adjustment 録音調整 Connection : Fig. 2-3 Tape : MTT-5513 400 Hz/12 dB (195 mV) R11/R21 (EQ-BIAS PCB) 6.5 dB (367 mV) DECK 1 15. Record level check 録音確認 Connection : Fig. 2-3 Tape : MTT-5563 Tape : MTT-5572 400 Hz/12 dB (195 mV) Check only 6.5 dB 1 dB (327 411 m

27、V) 16. Total harmonic distortion 総合歪率 Connection : Fig. 2-3 Tape : MTT-5513 Tape : MTT-5563 Tape : MTT-5572 400 Hz/9 dB (275 mV) Check only2.5 % or less 17. Overall frequency response 総合周波数特性 Connection : Fig. 2-3 Tape : MTT-5513 Tape : MTT-5563 Tape : MTT-5572 40 Hz 12.5 kHz/ 34 dB (15.5 mV) Check

28、onlyFig. 2-10 18. Overall SN ratio 総合SN比 Connection : Fig. 2-3 Tape : MTT-5513 Tape : MTT-5563 Tape : MTT-5572 No signal 無信号 Check only NORMAL : 44 dB min. CrO2 : 45 dB min. METAL : 46 dB min. Ratio of ref. level to noise level 規定出力 比 L301P302-2 : 100 KHzDECK 2 L304/L404 TP32/TP33 : Min. DC voltage

29、DC電圧最小 DECK 2 R32/R42DECK 2 L301/L401 R31/R41DECK 2 MTT-5513 : for NORMAL MTT-5563 : for CrO2 MTT-5572 : for METAL DECK 1 DECK 2 10 TASCAM 322 ITEM 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. 2-3 (1 kHz B.P.F. in) Tape : MTT-5572 1 kHz/+1 d

30、B (870 mV) Check only65 dB min. 20. REC MUTE function REC MUTE効果 Connection : Fig. 2-3 (1 kHz B.P.F. in) Tape : MTT-5572 1 kHz/+1 dB (870 mV) Check only55 dB min. 21. Channel separation Connection : Fig. 2-3 (1 kHz B.P.F. in) Tape : MTT-5563 L ch : 1 kHz/9 dB (275 mV) R ch : No signal Check only30 d

31、B min. REMARKS 備考 22. Adjacent track crosstalk 間 Connection : Fig. 2-3 Tape : MTT-5513 L ch : No signal R ch : 125 Hz/9 dB (275 mV) Check only30 dB min. 14. Bias leakage 漏 Connection : Fig. 2-3 Tape : MTT-5513 Mode : REC No signal 無信号 L102/L202 (MAIN PCB)40 dB or less (7.75 mV) DECK 1 Find the diffe

32、rence between the 1 kHz recorded portion and the erased portion. 1kHz録音部分消去部分出力比 Find the difference between the 1 kHz recorded portion and the 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

33、（Rch）出力 比 Invert tape and play R ch track. Check leakage level against the 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 2 11 3. BLOCK DIAGRAM TASCAM 322 R/P Head PLAY REC DECK 1 PB EQ EQ amp PB level 1 32 INPUTBAL Line in MONITOR PLAYBACK METER Amp M

34、ETER 2 1 A INPUT -10dBV BALANCED 2 1 A OUTPUT DECK1/COMMON BAL UNBAL INPUT -5dBV +4dBu SEPARATE COMMON Line out Buffer Amp SLV mute Buffer amp SLV DUB OFF1 3 2 PB in Rec out Play mute OFF,MASTER DOLBY B-C TYPE NR SYSTEMRec level Rec MUTE Rec Amp 12 BIAS TRAP HX PRO 1 2 MECHA1 Erase head RS-232C 5 9

35、4 8 3 7 2 6 1 Dsub9S BIAS OSC 231231 EXT CONTROL INOUT 231 REMOTE RC-322A SLV SLV BAL I/O LA-322 MASTER OFF 2 1 A CASCADE OUTPUT OUTPUT DECK1/COMMON (OPTION) -10dBV +4dBu 12 12 12 12 1 2 MIX R HP Amp PHONES OUT PHONES MAX 7mW/32 ohm PHONE PCB MINIMINI MINI CONTROL 2.RxDATA 3.TxDATA 5.GND R/P Head PL

36、AY REC DECK 2 PB EQ Rec Amp EQ amp PB level 1 3 2 PB in Line out INPUTBAL DOLBY Line in MONITOR PLAYBACK METER Amp SEPARATE COMMON IN/OUT 2 1 A 2 1 A INPUT METER -10dBV DECK2 BALANCED OUTPUT BAL UNBAL INPUT -5dBV +4dBu Rec level 1 3 2 Rec out Play mute B-C TYPE NR SYSTEM Rec MUTE 12 BIAS TRAP HX PRO

37、 1 2Erase head MECHA2 BIAS OSC BAL I/O LA-322(OPTION) OUTPUT +4dBu DECK2 12 TASCAM 322 PARTS LIST SECTION NOTES PC boards shown are viewed from parts side. Parts marked with *require longer delivery time. The parts with no reference number or no parts number in the exploded views are not supplied. A

38、s 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 replaced with identical components - refer to the appropriate parts list and ensure exact replacement. Parts of mark can be used o

39、nly 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

40、EXPORT 4. EXPLODED VIEWS AND PARTS LIST EXPLODED VIEW-1 13 分解図 TASCAM 322 EXPLODED VIEW-1 REF.NO.PARTS NO.DESCRIPTIONREMARKS 1- 1 9260259100BONNET 1- 2 * 9260293700RACK MOUNTING 1- 3 * 9260158500TR BRACKRT 1- 4 * 9145356000GATHER PCB C ASSY J,K,A,UK * 9145356050GATHER PCB C ASSY E * 9145356093GATHER

41、 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 * 9145354050GATHER PCB A ASSY K,A,E,UK 1- 9 * E00423900AAC CORD,3A 250V K * 9109026010AC CORD A * 9109026112AC CORD J * 9109025

42、711AC 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 * 9260349300MAIN CHASSIS J,K,A,E,UK * 9260365400MAIN CHASSIS US/C/GE 1-14 * 9260127100FOOT 210 1-15 * 9260163900PCB BRACKET 1-16

43、 * 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 * 9783294010SCREW,BTT-SSB M4X10 1-35 * 9783203014SCREW,BTT-S M3X14 1-36 * 9783213008SCREW BTT-B M3X8 1-37 * 9783203006SCREW,BTT-

44、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 * 9260330800D-SUB SCREW,HW-H118EN00 1-43 * 9783243006SCREW,BTT-B M3X6 (BLK) 14 TASCAM 322 EXPLODED VIEW-2 15 TASCAM 322 EXPL

45、ODED VIEW-2 REF.NO.PARTS NO.DESCRIPTIONREMARKS 2- 1 * 9278364101MECH ASSY,CMAY2Z482B 2- 2 * 9260163100MECH BRACKET (L) 2- 3 * 9260162604MECH BRACKET (R) ASSY 2- 4 9260255600HAFT HOLDER ASSY 2- 5 * 5800603801HALF HOLDER SPRING 2- 6 * 9260162501SHIELD PLATE (HEAD) 2- 7 * 9260168500HEAD H.S PLATE 2- 8

46、9260162801CASE SPRING 2- 9 * 9260230100MECHA BRIGE 2-10 * 9145356000GATHER PCB C ASSY J,K,A,UK * 9145356050GATHER PCB C ASSY E * 9145356093GATHER PCB C ASSY US/C/GE 2-11 * 9260231300RESET BUTTON 2-12 9260222400SLIDE KNOB 2-13 9260231601SLIDE KNOB B 2-14 9260230001CENTER BRACKET 2-15 * 9260173300DAMPER 2-16 * 9260230200EJECT BUTTON 2-17 * 9260234504ESCUTCHEON SUB ASSY 2-18 * 9260205700PLATE,REFLECT 2-19 9260231403FL WINDOW 2-20 9260230901KNOB B 2-21 9260231100ROTARY SW KNOB 2-22 9260231000KNOB C 2-23 * 9260349200PANEL FRONT 2-24 * 9260271101BAD