索尼SONY WM-EX190电路图.pdf

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1、WM-EX190/EX192 US Model Canadian Model WM-EX190 AEP Model E Model Chinese Model WM-EX190/192 SERVICE MANUAL CASSETTE PLAYER MICROFILM SPECIFICATIONS Model Name Using Similar Mechanism NEW Tape Transport Mechanism Type MT-WMEX192-114 Power requirements 3V DC batteries R6 (AA) 2 Dimensions 82 111.5 34

2、.5 mm (w / h/ d) incl. projecting parts and controls Mass Approx. 115 g / Approx. 190 g incl. batteries and a cassette Supplied accessories Stereo headphones or Stereo earphones (1) / Belt clip (1) Design and specifications are subject to change without notice. Photo : WM-EX192 Ver 1.0 2000. 01 ? ?

3、? ? ? ? ? ? ? ? 2 TABLE OF CONTENTS Flexible Circuit Board Repairing Keep the temperature of the soldering iron aroud 270 C during repairing. Do not touch the soldering iron on the same conductor of the circuit board (within 3 times). Be careful not to apply force on the conductor when soldering or

4、unsoldering. Notes on chip component replacement Never reuse a disconnected chip component. Notice that the minus side of a tantalum capacitor may be damaged by heat. SECTION 1 GENERAL 1.GENERAL 2 2.DISASSEMBLY 2-1.Cabinet (REAR) 3 2-2.Main Board 4 2-3.Lid, Cassette 4 2-4.Mechanism Deck 5 2-5.“BELT”

5、 “MOTOR” “PINCH LEVER” “HEAD, MAGNETIC” 5 3.MECHANICAL ADJUSTMENT 6 4.ELECTRICAL ADJUSTMENT6 5.DIAGRAMS 5-1.Block Diagram 7 5-2.Printed Wiring Board 9 5-3.Schematic Diagram 11 5-4.IC Block Diagram 13 6.EXPLODED VIEWS 6-1.Cabinet Section 14 6-2.Main Board Section 15 6-3.Mechanism Section-1 16 6-4.Mec

6、hanism Section-2 17 7.ELECTRICAL PARTS LIST 18 This section is extracted from instruction manual. ? ? ? ? ? ? ? ? ? ? 3 SECTION 2 DISASSEMBLY Note :Follow the disassembly procedure in the numerical order given. 2-1. CABINET (REAR) This set can be disassembled in the order shown below. Cabinet (rear)

7、 Set Main board Lid assy, cassette Mechanism deckBelt Motor Pinch lever (N) assy Head, magnetic A 1 Two screws (B1.7 9) 2 Open the lid, cassette 3 Cabinet (rear) (There 16 claws of A to P are caught.) B K M L C N O P D E F G H I J ? ? ? ? ? ? ? ? ? ? 4 2-2. MAIN BOARD 2-3. LID ASSY, CASSETTE 1 Remov

8、e the solders. 2 Screw (M1.4) Claw 3 MAIN board (There is a claw.) ? 2 Spring (torsion) 5 Lid assy, cassette 1 Open the lid, cassette 3 Release the catch 4 Release the catch ? ? ? ? ? ? ? ? ? ? 5 2-4. MECHANISM DECK 2-5. BELT, MOTOR, PINCH LEVER (N) ASSY, “HEAD, MAGNETIC” 1 Remove the mechanism deck

9、 in the direction of the arrow. (There two claws.) Two claws 2 Two screws (M1.4) 5 Two screws (M1.4) 3 Motor (reel/capstan) 6 Head,magnetic (playback) 4 Pnch lever (N) assy 1 Belt Motor (reel/capstan)Wheel assy (sp), capstan Belt threading Belt ? ? ? ? ? ? ? ? ? ? 6 SECTION 3 MECHANICAL ADJUSTMENTS

10、PRECAUTION 1.Clean the following parts with a denatured-alcohol-moistened swab : playback headpinch roller capstanrubber belt 2.Demagnetize the playback head with a head demagnetizer. 3.The adjustments should be performed with the rated power supply voltage (3.0 V) unless otherwise noted. Torque Mea

11、surement SECTION 4 ELECTRICAL ADJUSTMENT PRECAUTION Supplied voltage : 3.0 V Switch position AVLS switch : NORM MEGA BASS switch : OFF/NORM Test tape Tape Speed Adjustment Procedure : 1.Playback WS-48A (tape center part) in the REV state and adjust RV601 so that the frequency counter reading becomes

12、 3,000 Hz. Specification Value : 2.Playback WS-48A (tape counter part) in the FWD state. Check that frequency counter reading is within 1.5% of reading of step 1. Adjustment Location : Digital frequency counter 2,985 to 3,015 Hz Type WS-48A Signal 3 kHz, 0 dB Used for tape speed adjustment ModeTorqu

13、e MeterMeter Reading 20 30 g cm FWD CQ-102C (0.28 0.42 oz inch) FWDless than 2 g cm back tension(less than 0.03 oz inch) more than 40 g cm FF, REWCQ-201B (more than 0.56 oz inch) i test tape WS-48A (3 kHz, 0 dB) set jack (J301) 16 frequency counter RV601: Tape speed adjustment MAIN BOARD ? ? ? ? ? ?

14、 ? ? ? ? WM-EX190/EX192 SECTION 5 DIAGRAMS 5-1. BLOCK DIAGRAM 7 8 MVREF34 L10530 28 2422 RV301 VOLUME 16 R12729 27 2523 20 LOW BOOST V REF 322613 MEGA BASSGROOVENORM MEGA BASSOFF (EX192) (EX190) S503 S305-1 S305-2 NORMLIMIT 18V REFFWD/REV OSC 43 1 47 B+ HP901 PLAYBACK HEAD IN+35 TH601 RV601 TAPE SPE

15、ED OPERATION DET CURRENT DET PULSE DET OPERATION LOGIC PRE DRIVE 39 40 41 244 45 46 V U W M901 REEL/CAPSTAN MOTOR i J301 21POWER MUTE 19VCC 3S/S Q301 10K/47K TAPE POWER S301 BATTERY DRY 3.0V D150 (POWER) +B+ AVLS Signal path. E: PB ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

16、? ? ? ? ? WM-EX190/EX192 9 10 5-2. PRINTED WIRING BOARD Note on Printed Wiring Board: X : parts extracted from the component side. b : Pattern from the side which enables seeing. C344 TP14 RV601 R610 R611 R608 JR18 TP3 JR37 JR35 JR29 JR7 JR28 JR12 JR10 JR14 JR11 JR32 JR26 JR24JR25 JR22 C319 C327 C33

17、8 C341 C324 C101 C332 C336 C334 C109 C209 R324 TP4 TP13 TP12 JR27 JR36 JR31 JR30 JR33JR34 JR17 EX192 MODEL EX190 MODEL JR16 JR19 JR20 JR3 JR23 JR1 JR21 R207 R107 JR8 JR4 JR2 R209 R109 JR9 JR15 Q301 D150 C337 IC301 C605 C606 R606 TP1 TP9 TP15 TP10 TP11 TP2 TH601 C335 R327 D302 C342 C321 C333 C325 C10

18、5 C205 R103 R205 C203 C107 C108 C208 R203 R204R150 R206 R106 R105 R609C608 C603 C602 C601 R601 JR13 JR38 JR5 JR6 C201 C604 R605 C103 R104 R108 R208 R110 R210 C207 TP5 TP7 16 TP8 TP6 1 12 1324 25 36 3748 R L HP901 PLAYBACK HEAD M901 REEL/CAPSTAN MOTOR DRY BATTERY SIZE AA (IEC DESIGNATION R6) 2PCS, 3V

19、 COM W V U J301 MAIN BOARD C204 C104 S305 AVLS RV301 VOLUME NORM LIMIT (POWER) S301 (TAPE POWER) S303 OFF : EX190MEGA BASS NORM : EX192MEGA BASSGROOVE 11 (11) E L R REF GND 1-675-493 C609 C343 R325 EX192 MODEL 12 A B C D E F 345678910 Ref. No.Location D150F-3 D302B-2 IC301D-4 Q301E-4 Semiconductor L

20、ocation ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? WM-EX190/EX192 5-3. SCHEMATIC DIAGRAM 11 12 Note on Schematic Diagram: All capacitors are in F unless otherwise noted. pF: F 50 WV or less are not indicated except for electrolytics and tantalums. All resistors are

21、 in and 1/4 W or less unless otherwise specified. %: indicates tolerance. C : panel designation. U : B+ Line. H : adjustment for repair. Total current is measured with no cassette installed. Power voltage is dc V and fed with regulated dc power supply from external power voltage jack. Voltages and w

22、aveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : STOP () :PLAY Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal produc- tion tolerances. Signal path. E: PB Abbreviation CND: Canadian model FR: French model EA: S

23、audi Arabia model Refer to page 13 for IC Block Diagram. 68 15 15 EX190 : E/ EX192 : AEP, E, EA 2.2M C609 1000p C343 1000p R106, R206 150 : EX192: FR 100 : EXCEPT EX192: FR R104, R204 680 : EX192: FR 470 : EXCEPT EX192: FR ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?

24、 WM-EX190/EX192 NOTE: -XX, -X mean standardized parts, so they may have some differences from the original one. Items marked “*” are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. SECTION 6 EXPLODED VIEWS The mechanical par

25、ts with no reference number in the exploded views are not supplied. Abbreviation CND: Canadian model FR: French model EA: SaudiArabia model Color Indication of Appearance Parts Example: KNOB, BALANCE (WHITE) . . . (RED) Parts of Color Cabinets Color IC301 LB8115W-TLM 5-4. IC BLOCK DIAGRAM 13 14 1 2

26、36 35 34 33 32 31 30 29 28 27 26 25 131415 16 1718 1920 21 2223 24 48 47 46 45 44 43424140393837 COM RI VREF POWER OUTC POWER OUT2 VCC POWER MUTE POWER IN1 POWER IN2 MIX OUT1 MIX OUT2 LP.2 R. P2 R.P1 DET OUT MVREF IN+ VSP LOW BOOST IN2 LOW BOOST IN1 LOW BOOST SW M-GND R.VREF PRE MUTE SW (FWD/REW) PO

27、WER OUT1 POWER GND MVCC DR WOUT MP-GND VOUT UOUT FC OUT OSC UB VB WB 3 4 5 6 7 8 9 10 11 12 PRE NF1 PRE OUT2 PRE NF2 PRE FWD IN2 PRE REV IN2 PRE REV IN1 PRE FWD IN1 S/S PRE GND PRE OUT1 BIAS R.F REF SYS CONT DET VREF SPEED LOW BOOST PRE DRIVER OPERATION LOGIC OSC PLUSE DET REF VOLTAGE REF VOLTAGE FO

28、R SPEED CONTROL CURRENT DET OPERATION DET FWD/ REV FREQ CARC. + 1 2 3 5 4 7 8 9 6 mechanism not supplied 6-1. CABINET SECTION Ref. No.Part No.DescriptionRemarksRef. No.Part No.DescriptionRemarks 1X-3378-625-1LID ASSY, CASSETTE (GRAY)(EX190) 1X-3378-626-1LID ASSY, CASSETTE (BLUE)(EX190) 1X-3378-627-1

29、LID ASSY, CASSETTE (GREEN)(EX190) 13-040-914-01LID,CASSETTE (GOLD)(EX192) 13-040-914-11LID,CASSETTE (BLACK)(EX192) 13-040-914-21LID,CASSETTE (BLUE)(EX192) 23-019-949-01SPRING (TORSION) 33-041-234-01SPRING (CASSETTE) 43-040-908-01CABINET (FRONT)(EX190) 43-040-908-11CABINET (FRONT)(EX192) 53-040-911-0

30、1KNOB(MEGA BASS) (EX190) 53-040-915-01KNOB(GROOVE) (EX192) 63-040-909-01CABINET (REAR) 73-040-910-01LID,BATTERY CASE 83-022-346-01LENS 93-318-203-92SCREW(B1.7X9), TAPPING ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 15 6-2. MAIN BOARD SECTION Ref. No.Part No.Descript

31、ionRemarksRef. No.Part No.DescriptionRemarks 54 55 56 57 58 53 52 51 513-703-816-73SCREW (M1.4), SPECIAL HEAD 52A-3021-303-A MAIN BOARD, COMPLETE (EX190:FR) 52A-3021-304-A MAIN BOARD, COMPLETE(EX190:US,CND,AEP) 52A-3021-305-A MAIN BOARD, COMPLETE (EX190:E) 52A-3021-306-A MAIN BOARD, COMPLETE (EX192:

32、AEP,E,EA) 52A-3021-307-A MAIN BOARD, COMPLETE (EX192:FR) 533-040-912-01TERMINAL (+), BATTERY 543-019-944-01BUTTON (STOP) 553-019-943-01BUTTON (REW) 563-019-941-01BUTTON (PLAY) 573-019-942-01BUTTON (FF) 583-040-913-01TERMINAL (-), BATTERY ? ? ? ? ? ? ? ? ? ? 16 6-3. MECHANISM SECTION-1 Ref. No.Part N

33、o.DescriptionRemarksRef. No.Part No.DescriptionRemarks 104 103 105 106 102 101 M901 HP901 1013-013-560-11BELT 1023-703-816-07SCREW (M1.4), SPECIAL HEAD 1033-019-776-01GEER (REEL-S) 1043-703-816-73SCREW (M1.4), SPECIAL HEAD 105X-3369-749-1PINCH LEVER (N) ASSY 1063-920-996-01SPRING (PINCH N) M9011-763

34、-073-11MOTOR (REEL/CAPSTAN)(WITH PULLY) HP9011-500-640-11HEAD, MAGNETIC (PLAYBACK) ? ? ? ? ? ? ? ? ? ? 17 6-4. MECHANISM SECTION-2 155 158 154 159 160 161 162 163 164 165 166 152 151 153 157 156 1513-921-797-01WASHER 152X-3378-363-1CHASSIS ASSY (GL/O-99) 1533-938-628-11SPRING (PLAY-CP) 1543-019-773-

35、01GEAR (AS) 155X-3374-598-1CLUTCH ASSY (S) 1563-022-093-01SPRING (FR-S) 1573-022-094-01SPRING (STOP-S) 1583-019-777-03LEVER (OWS), DETECTION 1593-728-091-01WASHER, STOPPER 1603-019-778-01SLEEVE (MS) 1613-921-335-03WASHER, LEVER 1623-920-990-02SPRING (UD), COMPRESSION 1633-019-774-01GEAR (BS) 164X-33

36、72-558-1WHEEL ASSY (SP), CAPSTAN 1653-019-775-01GEAR (DS) 1663-036-664-01SPRING (FR LEVER OWN) Ref. No.Part No.DescriptionRemarksRef. No.Part No.DescriptionRemarks ? ? ? ? ? ? ? ? ? ? NOTE: Due to standardization, replacements in the parts list may be different from the parts specified in the diagra

37、ms or the components used on the set. -XX, -X mean standardized parts, so they may have some difference from the original one. Items marked “*” are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. CAPACITORS: uF: F RESISTORS

38、All resistors are in ohms. METAL: metal-film resistor METAL OXIDE: Metal Oxide-film resistor F: nonflammable COILS uH: H SEMICONDUCTORS In each case, u: , for example: uA.: A. , uPA. , PA. , uPB. , PB. , uPC. , PC. , uPD., PD. Abbreviation CND: Canadian model FR: French model When indicating parts b

39、y reference number, please include the board name. Ref. No.Part No.DescriptionRemarksRef. No.Part No.DescriptionRemarks 18 SECTION 7 ELECTRICAL PARTS LIST MAIN A-3021-304-A MAIN BOARD, COMPLETE (EX190:US,CND,AEP) * A-3021-305-A MAIN BOARD, COMPLETE (EX190:E) * A-3021-303-A MAIN BOARD, COMPLETE (EX19

40、0:FR) * A-3021-306-A MAIN BOARD, COMPLETE (EX192:AEP,E,EA) * A-3021-307-A MAIN BOARD, COMPLETE (EX192:FR) * 3-040-912-01TERMINAL (+), BATTERY 3-040-913-01TERMINAL (-), BATTERY C1011-162-962-11CERAMIC CHIP470PF10%50V C1031-162-968-11CERAMIC CHIP0.0047uF10%50V C1041-126-153-11ELECT22uF20%6.3V C1051-11

41、5-156-11CERAMIC CHIP1uF10V C1071-115-156-11CERAMIC CHIP1uF10V C1081-162-965-11CERAMIC CHIP0.0015uF10%50V C1091-162-965-11CERAMIC CHIP0.0015uF10%50V C2011-162-962-11CERAMIC CHIP470PF10%50V C2031-162-968-11CERAMIC CHIP0.0047uF10%50V C2041-126-153-11ELECT22uF20%6.3V C2051-115-156-11CERAMIC CHIP1uF10V C

42、2071-115-156-11CERAMIC CHIP1uF10V C2081-162-965-11CERAMIC CHIP0.0015uF10%50V C2091-162-965-11CERAMIC CHIP0.0015uF10%50V C3191-115-156-11CERAMIC CHIP1uF10V C3211-128-057-11ELECT330uF20.00% 6.3V C3241-115-156-11CERAMIC CHIP1uF10V C3251-126-153-11ELECT22uF20%6.3V C3271-162-964-11CERAMIC CHIP0.001uF10%5

43、0V C3321-115-156-11CERAMIC CHIP1uF10V C3331-126-162-11ELECT3.3uF20%50V C3341-110-563-11CERAMIC CHIP0.068uF10.00% 16V C3351-164-156-11CERAMIC CHIP0.1uF25V C3361-115-467-11CERAMIC CHIP0.22uF10.00% 10V (EX190) C3371-115-467-11CERAMIC CHIP0.22uF10.00% 10V (EX192) C3381-162-974-11CERAMIC CHIP0.01uF50V C3411-162-970-11CERAMIC CHIP0.01uF10%25V C3421-