Akai-HXA305W-tape-sm 电路图 维修手册.pdf

《Akai-HXA305W-tape-sm 电路图 维修手册.pdf》由会员分享，可在线阅读，更多相关《Akai-HXA305W-tape-sm 电路图 维修手册.pdf（13页珍藏版）》请在收音机爱好者资料库上搜索。

1、AK AI SERUiCE mnnunL SItMEO .X,UaLE CASSETTE DECK HX-A305W -I-I-I-I-I-I 1zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA oOLBNfi DuaBlG TAPE 1 -Q:E3:D 1 ! 11 1 KECOKDrC DfCK -I-I-I-I-I-I 1 oOLBNfi DuaBlG TAPE 1 -Q:E3:D 1 ! 11 1 ouBBiNG nEC/-spe0 DueeiNG TAPE U E UBBINQ PLAV/SEOUENTIAL PtAI TAPE

2、 X -I-I-I-I-I-I 1 oOLBNfi DuaBlG TAPE 1 -Q:E3:D STEREO DOUBL CASSETTE DECK MODEL HX.A305W S P E C I F I C A T I O N S Track system 4 track 2 channel stereo Heads H D head for recording and playback X 2 Erase head X 1 Motors D C motor for capstan drive X 1 D C motor for reel drive X 2 Winding time 14

3、0sec.(C-60 tape) Wow 1) Insulation Tape 2) PVC tubing 3) Spacers (Insulating Barriers) 4) Insulation sheets for transistors 5) Plastic screws for fixing microswitch (especially in turntable) 5. When replacing AC primary side components (trans- formers, power cords, noise blocking capacitors, etc), w

4、rap ends of wires securely about the terminals before soldering. 7. Check that replaced wires do not contact sharp edged or pointed parts. 8. Also check areas surrounding repaired locatoins. 9. Use care that foreign objects (screws, solder dropiets, etc.) do not remain inside the set. SAFETY CHECK A

5、 F T E R SERVICING Confirm the specified insulation resistance between power cord plug prongs and externally exposed parts of the set is greater than 10 M ohms. but for equipment with external antenna terminals (tuner, receiver, etc.) and is intended for c orzyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONML

6、KJIHGFEDCBA A, specified insulation re- sistance should be headphone jacks line-in-out jacks etc. more than 2.2 M ohms (ground terminals, microphone jacks). 4= cX 6. Observe that wires do not contact heat producing parts (heatsinks, oxide metal fihn resistors, fusible resistors, etc). I N F O R M A

7、T I O N SYMBOLS F O R PRIMARY DESTINATION Alphabet indicates the destination of the units as listed below. Symbols Principal Destinations CA: USA UK c Canada Europe (except UK) Japan Australia m W. Geimany only Universal Area m Custom version RadioFans.CN 收音机爱 好者资料库 I. DISASSEMBLY 1-1 Removal of Top

8、 and Bottom Covers 1)zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA Remove the 7 screws as shown in Fig.1-1 and re- move the top cover by sHding it off to the rear. 2) The bottom cover can be removed by removing the 6 screws . Screws Screws Q Screws Fig.1-1 1-2 Removal of Front Panel 1) Remove

9、 the 2 screws on either side of the front panel, the 3 screws on the bottom, and the 1 screw (D on the top, as shown in Fig. 1-2. 2) Disconnecting all wiring from the Main P.C.B. and the ground lead connected to the mechanism chassis will permit removal of the front panel. Screw Screw (3) Screws Scr

10、ew ( Fig.1-2 1-3 Removal of Mechanism Section 1-3-1 Removal of Mechanism Assembly 1) Remove the front panel, following the procedures in section 2. 2) The mechanism assembly can be removed by pushing the E J E C T button, and removing the 6 screws which secure the mechanism assembly. (Fig. 1-3) Scre

11、ws ( GND wire 1 1 i H 1-3-2 Removal of REC/PB, Erase Head and Finch Roller 1) The button assembly can be removed by removing the 2 screws O . 2) The REC/PB and Erase heads can be removed by re- moving their securing screwszyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA (2 each). 3) After replac

12、ing the REC/PB head, be sure to carry out the head azimuth adjustment. 4) Remove the pinch roller by removing the 1 crew . Mechanism Assy (Tape I or Tape 2 ) Button Assy fixing Screws (7) Erase head fixjig Screws REC/PB head fixing Screws Screw (9) REC/PB head Fig.1-4 1-3-3 Removal of Motor, Flyweel

13、 1) Removing the 2 screws (A) which secure the motor plate will allow disassembly of the plate with the motor 1 still attached. 2) Removing the 2 screws (B) which secure the motor 1 will allow the motor 1 to be removed from the plate. 3) After the motor 1 has been removed, the flywheel 1 can be remo

14、ved. 4) Removing the 6 screws which secure the motor plate will allow desassembly of the plate with the motor 2 still attached. 5) Removing the 3 screws which secure the motor 2 will allow the motor 2 to be removed from the plate. 6) After the motor 2 has been removed, the flywheel 2 can be removed.

15、 Mechonism AssV Screw Screws Motor I MoJ n belt FlywDeel I Fig.1-5 Screws Fig. 1-3 SERVICE MANUAL- 3 RadioFans.CN 收音机爱 好者资料库 I I . C O N T R O L S O TAPE COUNTER and Reset button (For the TAPE II deck) Shows tape running numerical index for TAPE M deck. TAPE II cassette Md and holder Load a cassette

16、 tape here for recording and playback. Q TAPE I cassette lid and holder Load a cassette tape here for playback. The TAPE I deck has the auto tape selec- tor inside of the cassette compartment. Q POWER indicator Tells you the cassette deck is turned on. Q REC indicator Tells you the cassette deck is

17、in the record- ing mode. 0 PEAKLEVEL METER Shows recording and playback levels. Q TAPE SELECTOR Switch (METAL _ / NORMAL m , For the TAPE II deck) To select the tape position according to the tape being used. Attention: Do not change the switch during recording. Q REC LEVELzyxwvutsrqponmlkjihgfedcba

18、ZYXWVUTSRQPONMLKJIHGFEDCBA Controls (LEFT/RIGHT) To set the recording input levels. DUBBING SPEED switch ( x 2 / x 1 m ) To select speed for dubbing operation. (B) DOLBY NR switch and indicator ( _ ON/ - OFF) To record or playback with DOLBY B-type NR system, The indicator will light when the switch

19、 is set toON. () TAPE I deck Tape operation buttons For winding tape and playback operations. TAPE II deck Tape operation buttons For winding tape, playback and recording op- erations. POWER switch To turn on and off the power. l i l . P R I N C I P A L P A R T S L O C A T I O N SERVICE MANUAL 4 V .

20、 P A R T S L I S T ATTENTION 1. When placing an order for parts, be sure to list Part No., Model No. and the description of each part. Otherwise, the non-delivery of the part or the delivery of a wrong part may result. 2. Please make sure that Part No. is correct when ordering. If not, a part differ

21、ent from the one you ordered may be delivered. 3. Since the parts shown in Parts List of Preliminary Service Manual may have been the subject of changes, please use this Parts List for all future reference. HOW TO USE THIS PARTS LIST 1. This Parts List lists those parts which are considered necessar

22、y for repairs. Other common parts, such as resistors and capacitors, are listed in the Common List for Service Parts from which these parts should be selected and stocked. 2. The Recommended Spare Parts List shows those parts in the Parts List which are considered particularly important for service.

23、 3. Parts not shown in the Parts List and Common List for Service Parts will not in principle be supplied. 4. How to read the Parts List. a) Mechanism Block 2. HEAD BASE BLOCK b) PC Board 6. MAIN PC BOARD PART NO. BH-T2023A320A HP-H2206A010A ZS-477876 ZS-536488 ZG-40289S DESCRIPTION HEAD BASE BLOCK

24、HEAD R/P PR4-8FU C PAN20X03STL CMT BID20X08STL CMT SP CS ANGLE ADJUST REE. NO. 6-ICl 6-IC2 6-ClA 6-ClB 6-ClC 6-Xl PART NO. EI-324S36 EI-336801 EC-338399 EC-3S0949 EC-338397 EI-318384 DESCRIPTION IC HD14049BP IC MB8841-564M C MMY V 223M 2S0AC U,E,B,S) C MMY V 223M 250DC J C MMY V 223M 12SAC C.A OSC X

25、TAL NC-18C -SP (Service Parts) Classification - A small x indicates that this part is not shown in the Photo or lUustration. -This number corresponds with the indi- vidual parts index number in that figure. -This number corresponds with the Figure- Number. Symbols for primary destination A :AAL(U.S.

26、A.) S B :BEAB(England) U Cl:CSA(Canada) V E:CEE(Europe) Y J:JPN(Japan) SAA(Australia) U/T(Universal Area) VDE(W. Germany) Custom Version SP (Service Parts) Classification These reference symbols correspond with component symbols in the Schematic Diagrams. The available PC Board Blocks are listed sep

27、arately. 5. When Part No. is known, Parts Index at end of Parts List can be used to locate where that part is shown in Parts List by its Reference No. listed at right of Part No. WARNING A ( * ) INDICATES SAFETY CRITICAL COMPONENTS. FOR CONTINUED SAFETY, REPLACE SAFETY CRITICAL COMPONENTS ONLY WITH

28、MANUFACTURES RECOMMENDED PARTS. AVERTISSEMENT A ( * ) IL INDIQUE LES COMPOSANTS CRITIQUES DE SCURIT. POUR MAINTENIR LE DEGR DE SCURIT DE LAPPAREIL, NE REMPLACER QUE DES PICES RECOMMANDEES PAR L FABRICANT. 6 PARTS LIST 1. RECOMMENDED SPARE PARTS 2. MECHA BLOCK We suggest you to stock the following Re

29、commended Spare Part items listed below since they can cover most of the routine service. Ref. No. Part No. Description 1 BB-720738 MECH BLK HX-A305W 2 BF-717792 FLYWHEEL PART P 3 BF-71 7793 FLYWHEEL PART R/P 4 BL-721068 RF PULLEY ASSY 5 BM-720761 MOTOR HX-A305W 6 BR-720752 SUPPLY REEL TABLE BLK HX-

30、A305W 7 BR-720754 TAKE-UP REEL TABLE BLK HX-A305W 8 *BT-720791 TRANS POWER K80027D (B,S) B.S 9 *BT-720792 TRANS POWER T3671D|V,E) rel 10 ED-619784 tj D GERMA H 1N60 11 ED-720783 D LED LTL-3233A GREEN 12 ED-720784 D LED LTL-3293A YELLOW 13 ED-327057 D SILICON H DS442X 14 ED-348990 D SILICON H DS446 1

31、5 ED-720805 D SILICON H 1N5393 16 ED-720799 DZENERHRD11EB3 17 ED-703903 DZENERHRD15EB2 18 *EF-601942 FUSE SEMKO T 250V 630MA 19 EH-720815 FILTER KM-10DF 20 EH-720759 HEAD R/P HX-A305W 21 EI-345551 IC LB1403 22 EI-709250 ICM51522L 23 EI-310036 IC TC4066BP 24 EI-720804 IC UPC1210C 25 ES-717779 SW LEAF

32、 MSW-1541 26 ES-720768 SW LEEF REC 27 ES-720769 SW LEEF PLAY 28 ES-720767 SW LEEF TAPE SELECTOR 29 ES-720782 SW PUSH SPEA12MC06-0L TAPE SELECTOR 30 *ES-720817 SW PUSH 125V 10A POWER SW) 31 ET-348302 TR FET 2SK381 CD F05 32 ET-308472 TR 2SA1115 E,F,G FOB 33 ET-522270 TR 2SC1210 D 34 ET-330225 TR 2SC1

33、815 BL 35 ET-308141 TR 2SC2603 G F05 36 ET-338410 TR 2SC2878 A.B 37 ET-371028 TR 2SD1266 P.Q 38 EV-7207B1 VR SLIDE VJ6013PVN10C-15A50K REC LEVEL 39 HE-720760 HEADE 40 MB-720770 BELT COUNTER 41 MB-717803 BELT MAIN 42 MB-717820 BELT MAIN P 43 MB-720746 BELT RF 44 MC-720777 COUNTER HX-A305W 45 MZ-71779

34、6 GEAR FF 46 MZ-717795 GEAR TU Ref. No. Part No. Description 11 ML-717774 LEVER PAUSE 12 ZG-717775 SP PAUSE LEVER 13 MZ-717776 STOPPER PAUSE 14 ZG-717777 SP BUTTON LEVER(C) 22 ZG-721061 SP BUTTON LEVER (E) 23 ES717779 SW LEAF MSW-1541 27 HZ-717780 HEAD BASE 28 ML-717781 LEVER DETECTION 29 ZG-717782

35、SP EH 30 ZG-71 7784 SP HEAD PANEL (S) R/P 31 HZ-717785 HEAD BASE 34 ZG-717786 SP AZIMUTH 35 ML-71 7787 ARM PINCH ROLLER PART R/P 36 ZG-717788 SP PINCH ROLLER R/P 39 BL-721068 RF PULLEY ASSY 40 ZG-719563 RF PULLEY ARM SPRING 42 MB-720746 BELT RF 43 BF-717792 FLYWHEEL PART P 44 BF-717793 FLYWHEEL PART

36、 R/P 47 MZ-717795 GEAR TU 49 MZ-717796 GEAR FF 50 ZG-720751 SP BACK TENTION 51 BR-720752 SUPPLY REEL TABLE BLK HX-A305W 52 BR-720754 TAKE-UP REEL TABLE BLK HX-A305W 53 ML-717800 LEVER REC DETECTION 54 ZG-717801 SP BACK TENSION TU 56 MB-712094 RUBBER MOTOR 57 ZS-721062 SCREW SPECIAL 58 MR-720756 PULL

37、EY MOTOR 59 MB-717803 BELT MAIN 61 MB-717820 BELT MAIN P 62 ML-717804 LEVER SLIDE EJECT 63 ZG-717806 SP LEVER SLIDE EJECT 64 ZG-71 7807 SP PLATE CASSETTE HOLDER 66 EH-720759 HEAD R/P HX-A305W 67 HE-720760 HEADE 68 BM-720761 MOTOR HX-A305W 78 ZS-717809 SCREW AZIMUTH 79 ES-720769 SW LEEF PLAY 82 ZW-72

38、0762 PWl 2X030X025NYL 83 ZW-720763 PW 12X20X04NYL 84 ZW-720765 PWl 55X380X050NYL 85 ZW-720766 PW205X400X040NYL 87 ML-717811 LEVER OPERATION 90 ZS-362011 ( + )PAN20X07STL BNI 96 ES-720767 SW LEEF TAPE SELECTOR 142 ML-361092 LEVER OPERATION (2) PART 150 ML-361090 LEVER OPERATION (1) PART NOTE Parts wi

39、ll not be supplied if they are not listed in t parts list, even if they appear on the assembling illusti tions with reference No. PARTS LIST 7 3. P.C BOARD BLOCK Ref. No. Part No. Description Ref. No. Part No. Description 1 BA-720788 PC MAIN BLK HX-A305W 0606 ET-308141 TR 2SC2603 G FOB O901 ET-30847

40、2 TR 2SA111BE,F,G FOB Q902 ET-308141 TR 2SC2603 G FOB Q903 ET-308141 TR 2SC2603 G FOB 4. MAIN P.C BOARD Q904 ET-308472 TR 2SA1115E,F,G F05 Q906 ET-308141 TR 2SC2603 G F05 Ref. No. Part No. Description 0907 ET-308141 TR 2SC2603 G FOB Ref. No. Part No. Description Q909 ET-308472 TR 2SA1115E,F,G F05 D3

41、01 EO-619784 D GERMA H 1N60 0910 ET-308472 TR 2SA111BE,F,G FOB D302 ED-619784 DGERMAH1N60 R927 ER-720801 R THERMO H 1/4S 1 BO-J LT2600 D501 ED-327057 D SILICON H DS442X R928 ER-720801 R THERMO H 1/4S 150-J LT2600 D502 ED-327057 D SILICON H DS442X R929 ER-720800 R THERMO 1/4S 1.6K-JLT0700 D601 ED-720

42、805 D SILICON H 1N5393 R930 ER-720800 R THERMO 1/4S 1.6K-J LT0700 D602 ED-720805 D SILICON H 1N5393 S301 ES-720798 SW SLIDE CL104K E8234438M D603 ED-348990 D SILICON H DS446 TBOl EO-720816 COIL OSC MC-129J D604 ED-703903 D ZENER H RD15E 82 VR101 EV-720807 R S-FIX H V8EK-PV 0.20W 223 D605 ED-720799 D

43、ZENERHRD11EB3 VR103 EV-720809 R S-FIX H V8EK-PV 0.20W 473 D606 ED-327057 D SILICON H DS442X VR201 EV-720807 R S-FIX H V8EK-PV 0.20W 223 D607 ED-348990 D SILICON H DS446 VR203 EV-720809 R S-FIX H V8EK-PV 0.20W 473 D901 ED-327057 D SILICON H DS442X VR301 EV-720807 R S-FIX H V8EK-PV 0.20W 223 D902 ED-3

44、27057 D SILICON H DS442X VR350 EV-35B120 R S-FIX H V8EK-PV 0.20W 104 D903 ED-327057 D SILICON H DS442X VR401 EV-720807 R S-FIX H V8EK-PV 0.20W 223 D904 ED-619784 D GERMA H 1N60 VR450 EV-355120 R S-FIX H V8EK-PV 0.20W 104 D905 ED-327057 D SILICON H DS442X VRB01 EV-3BB120 R S-FIX H V8EK-PV 0.20W 104 D

45、906 ED-327057 D SILICON H DS442X VR502 EV-3B5120 R S-FIX H V8EK-PV 0.20W 104 D907 ED-327057 D SILICON H DS442X VR909 EV-371287 R S-FIX H VM6CKPVB 0.30W 204 D908 ED-327057 D SILICON H DS442X VR910 EV-371287 R S-FIX H VM6CKPVB 0.30W 204 D909 ED-327057 D SILICON H DS442X F1 *EF-601942 FUSE SEMKO T 250V

46、 630MA D910 ED-327057 D SILICON H DS442X D911 ED-327057 D SILICON H DS442X D912 ED-327057 D SILICON H DS442X D915 ED-327057 D SILICON H DS442X 5. FRONT P.C BOARD FLIOI EH-720815 FILTER KM-1 ODE FL201 EH-720815 FILTER KM-IODF Description IC101 EI-709250 ICM51522L Ref. No. Part No. Description IC 102

47、EI-310036 IC TC4066BP D701 ED-720783 D LED LTL-3233A GREEN IC 103 EI-720804 IC UPC1210C D702 ED-720783 D LED LTL-3233A GREEN IC203 EI-720804 IC UPC1210C D703 ED-720783 D LED LTL-3233A GREEN IC301 EI-709250 ICM51522L D704 ED-720783 D LED LTL-3233A GREEN IC302 EI-310036 IC TC4066BP D705 ED-720784 D LE

48、D LTL-3293A YELLOW L350 EO-720814 COIL FIX 153J V3615031-G D801 ED-720783 D LED LTL-3233A GREEN L351 EO-720813 COIL FIX 472J D802 ED-720783 D LED LTL-3233A GREEN L450 EO-720814 COIL FIX 153J V3615031-G D803 ED-720783 D LED LTL-3233A GREEN L451 EO-720813 COIL FIX 472J D804 ED-720783 D LED LTL-3233A GREEN QlOl ET-308H1 TR 2SC2603 G F05 D805 ED-720784 D LED LTL-3293A YELLOW Q102 ET-308141 TR 2SC2603 G F05 D930 ED-720784 D LED LTL-3293A YELLOW Q103 ET-308141 TR 2SC2603 G F05 RECl Q104 ET-338410 TR 2SC2878 A,B D940 ED-720784 D LED LTL-3293A YELLOW Q105 ET-308141 TR 2SC2603 G F05 POWER Q10