索尼SONY WM-FX141电路图.pdf

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1、WM-FX141 US Model AEP Model E Model SERVICE MANUAL RADIO CASSETTE PLAYER MICROFILM Model Name Using Similar MechanismWM-FX101 Tape Transport Mechanism TypeMF-WMFX103-48 SPECIFICATIONS Radio Frequency FM : 87.6 108 MHz (US, Chilean, Latin America, Central and South America Models) : 65.0 107.9MHz (Ea

2、st European Model) : 87.6 107.9 MHz (Other Models) AM : 530 1,710 kHz (US, Chilean, Latin America, Central and South America Models) : 531 1,602kHz (Other Models) Power requirements 3V DC batteries R6 (size AA) 2 External DC 3V power sources Battery life (Aprroximate hours) BatteryPlaybackRadio Sony

3、 alkaline LR6 (SG)16 hrs48 hrs Sony R6P (SR)4.5 hrs16 hrs Dimensions 93.9 118.5 35.9 mm (w/h/d) (33/4 43/4 13/16 in.) incl. projecting parts Mass 205g (7.3 oz) incl.batteries Supplied accessories Stereo headphones or earphones (1) Belt clip (1) Design and specifications are subject to change without

4、 notice. Ver 1.3 1999. 05 With SUPPLEMENT-1 (9-923-296-81) With SUPPLEMENT-2 (9-923-296-82) ? ? ? ? ? ? ? ? ? ? 2 TABLE OF CONTENTS 1. GENERAL 3 2. DISASSEMBLY 2-1. Cabinet (Rear) 4 2-2. Mechanism Deck and Main Board 4 2-3. Main Board 5 2-4. Cassette Lid 5 2-5. Dial Pointer Setting 5 3. ADJUSTMENT 3

5、-1. Mechanical Adjustment 6 3-2. Electrical Adjustment 6 4. DIAGRAMS 4-1. Block Diagram 9 4-2. Schematic Diagram 11 4-3. Printed Wiring Board 13 4-4. IC Block Diagram 17 5. EXPLODED VIEWS 5-1. Cabinet and Board Section 18 5-2. Mechanism Section (MF-WMFX103-48) 19 6. ELECTRICAL PARTS LIST20 Notes on

6、chip component replacement Never reuse a disconnected chip component. Notice that the minus side of a tantalum capacitor may be damaged by heat. Flexible Circuit Board Repairing Keep the temperature of soldering iron around 270C during repairing. Do not touch the soldering iron on the same conductor

7、 of the circuit board (within 3 times). Be careful not to apply force on the conductor when soldering or unsoldering. ? ? ? ? ? ? ? ? ? ? 3 SECTION 1 GENERAL This section is extracted from instruction manual. ? ? ? ? ? ? ? ? ? ? 4 SECTION 2 DISASSEMBLY 2-1.CABINET (REAR) 2-2.MECHANISM DECK AND MAIN

8、BOARD 1 Remove the mechanism deck and main board in the direction of the arrow. head flexible board mechanism deck and MAIN board * note for installation : Make sure to put the head flexible board to ditch before install the mechanism deck and MAIN board. Note :Follow the disassembly procedure in th

9、e numerical order given. Note :Disassemble the unit in the order as shown below. Cabinet (Rear)Mechanism deck and main boardMain board Cassette lid Dial pointer setting Cassette lid Cabinet(rear) 1 Open the cassette lid and release claw A. 2 Remove the cabinet(rear).(Release all claws B from M in al

10、phabetical order.) A B C D E I K M L J H G F ? ? ? ? ? ? ? ? ? ? 5 2-3.MAIN BOARD 1 head flexible board 3 MAIN board 2 claws 2-4.CASSETTE LID Front cabinet A 3 Cassette lid (Remove it in the direction of the arrow) 1 Release the catch A. 2 Release the catch B. B 2 Align pointer with arrow marked sid

11、e as shown in Fig.1 and then fit to groove in the order of A and B. Align Pointer Fig. 1 Pointer 1 Rotate tune knob fully to arrow direction. A? ? B? ? 2-5.DIAL POINTER SETTING ? ? ? ? ? ? ? ? ? ? 6 SECTION 3 ADJUSTMENTS 3-1.MECHANICAL ADJUSTMENTS Precaution 1.Clean the following parts with a denatu

12、red-alcohol-moistend swab : playback headpinch roller capstanrubber belts 2.Demagnetize the playback head with a head demagnetizer. 3.Do not use a magnetized screwdriver for the adjustments. 4.After the adjustments, apply suitable locking compound to the parts adjusted. 5.The adjustments should be p

13、erfomed with the rated power supply voltage (2.5V) unless otherwise noted. Torque Measurement 3-2.ELECTRICAL ADJUSTMENTS Precaution Supplied voltage : 2.5V Switch and control position TAPE switch : NORM VOLUME control : maximum AVLS switch : OFF ModeTorque meterMeter reading FWD FWD Back Tension FF,

14、 REW CQ-102C CQ-201B 20 to 42 gcm (0.28 to 0.58 ozinch) less than 2 gcm (less than 0.03 ozinch) more than 60 gcm (more than 0.83 ozinch) TAPE SECTION FUNCTION switch : TAPE Test tape TypeSignalUsed for WS-48A3kHz, 0dBTape Speed Adjustment Tape speed adjustment Tape selection adjustment : NORM Proced

15、ure : Adjustment Value: normal tape speed Adjust the tape speed adjustment RV601, so that the freqency counter reading becomes 3,000Hz. Specification Value: Frequency difference between the beginning and the end of the tape should be within 1.5% (45Hz). Adjustment Location : 0dB=0.775V Digital frequ

16、ency counter 2,945 to 3,015Hz set 16 J302(phones) frequency counter test tape WS-48A (3kHz, 0dB) ? ? ? ? ? ? ? ? ? ? 7 AM BAND: AM Signal generator FM BAND : FM Signal generator AM TRACKING ADJUSTMENT Adjust for a maximum reading on level meter. L1620kHz(800kHz) CT11,400kHz(1,300kHz) TUNER SECTION P

17、ut the lead-wire antenna close to the set. 30% amplitude modulation by 400Hz signal. Output level : as low as possible AM RF signal generator 0.01F FM RF signal generator antenna terminal 75kHz(100%) amplitude modulation by 1kHz signal. Output level: as low as possible 16 set level meter J302 (phone

18、s) AM FREQUENCY COVERAGE ADJUSTMENT Adjust for a maximum reading on level meter. L4505kHz(516.5kHz) CT41,750kHz(1,631.5kHz) AM IF ADJUSTMENT Adjust for a maximum reading on level meter. T1455kHz FM TRACKING ADJUSTMENT Adjust for a maximum reading on level meter. L286.0MHz64MHz CT2109.5MHz FM FREQUEN

19、CY COVERAGE ADJUSTMENT Adjust for a maximum reading on level meter. L386.0MHz64MHz CT3109.5MHz ( ) :E, Mexican, East European, AEP : East European Adjustment Location: Main board (See page 8) 0 dB = 1 V Repeat the procedures in each adjustment several times for the maximum level meter indication. Th

20、e frequency coverage and tracking adjustments should be finally done by the trimmer capacitors. ? ? ? ? ? ? ? ? ? ? 8 Adjustment Location : Main board CT1 AM Tracking Adjustment CT2 FM Tracking Adjustment L2 FM Tracking Adjustment L1 AM Tracking Adjustment L3 FM Frequency coverage Adjustment CT3 FM

21、Frequency coverage Adjustment L4 AM Frequency coverage Adjustment CT4 AM Frequency coverage Adjustment T1 AM IF Adjustment antenna terminal ? ? ? ? ? ? ? ? ? ? WM-FX141 9 10 4-1.BLOCK DIAGRAM SECTION 4 DIAGRAM IC301 28 L JC2 R M 2 1 23 38 1918 15126 T1 AM IF CF1 CF2 4 25 RV301 VOLUME HP901 E,MX,EE,A

22、EP MODEL PLAYBACK HEAD M901 REEL/CAPSTAN MOTOR 5 24 6 18 9 2 1 OFF 14L OUT 13R OUT FM MIX AM MIX AM OSC FM OSC FM RF OUT AM RF IN FM RF IN AUDIO AMP MOTOR DRIVE IC1 FM/AM,RF/AF AMP E,MX,EE,AEP MODEL J302 J301 Signal path Abbreviation EE : East European model MX : Mexican model DC IN 3V Q301 PHONES S

23、WITCH S305 AVLS S302 POWER S303(2/2) LPFCP1 DX LOCAL 16 13 232220 8 19 17 RV601 TAPE SPEED + S303(1/2) (TAPE SEL) CrO2/METAL NORM S304 (FUNCTION) FM AM TAPE X1 VCO AM IF IN FM IF IN VCC2 16 LP2 19kHz10.7MHz 7 L2 FM TRACKING CT2 CV2 X2 QUAD DET OUTMPX IN L3 FM FREQ. COVER CT3 CV3 20 L4 AM FREQ. COVER

24、 CT4 CV4 24 L1 AM TRACKING CT1 CV1 22 VCC1 21 : FM : AM E : PB ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? WM-FX141 4-2.SCHEMATIC DIAGRAM MAIN SECTION 11 12 Waveform 1IC1 ! 1.5 Vp-p19kHz 1sec/div 0.5V/div Note: All capacitors are in F unless otherwise noted. pF: F 5

25、0 WV or less are not indicated except for electrolytics and tantalums. All resistors are in and 1/4 W or less unless otherwise specified. : internal component. U : B+ Line. H : adjustment for repair. Power voltage is dc 3V and fed with regulated dc power supply from external power voltage jack (J301

26、) . Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions. no mark : FM () : PB Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal produc- tion tolerances. Waveforms are taken with a oscilloscope. Signal path. F: FM

27、 f: AM E: PB Abbreviation EE: East European model 5E: Chilean model 6E: Latin America model 8E: Central and South America model MX: Mexican model L5 THP602 2k 1000PPM C1* JR5 JR1 C5* R1* L1 L3 L4 C4* C3* L2 C2* C18* C19* R602*R601* R603* R201* R202* R102* R101* US,5E,6E,8E E,MX,AEP C1 1PF 1PF 3PFEE

28、C4 6PF 6PF 9PF C5 33PF 33PF 0.0022uF/100v C18,C19 0.018uF 0.012uF 0.012uF C2 18PF 18PF 6PF C3 22PF 22PF 8PF R1 22 22 18 R101,R201 0 10 0 R102,R202 180k 39k 180k R601 3.9 1.5 1.5 R602 5.6 2.2 2.2 R603 750 680 680 * J302 M901 (REEL/CAPSTAN) US,5E,6E,8E MODEL JC6 LOCAL E,MX,EE,AEP MODEL DX S303(2/2) L1

29、 AM FERRITE-ROD ANTENNA JC2 JC3 LPF C16 0.022 CP1* AM IF 2.82.8 2.8 01.51.50.82 10.7 MHz AM TRACKING L1,CT1 TUNING CV1-4 FM TRACKING L2,CT2 FM FREQ. COVER L3,CT3 AM FREQ. COVER L4,CT4 AEP,E,MX,EE MODEL 0 0 0 0 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? WM-FX141 13

30、14 15 16 4-3.PRINTED WIRING BOARD MAIN SECTION Note: X : parts extracted from the component side. Y : parts extracted from the conductor side. : Through hole. b : Pattern from the side which enables seeing. Abbreviation EE: East European model 5E: Chilean model 6E: Latin America model 8E: Central an

31、d South America model MX: Mexican model 12 A B C D E F G 345678910111213141516171819202122232425 Semiconductor Location Ref. No.Location IC1E-9 IC301D-6 Q301E-5 ? ? ? ? ? 4-4.IC BLOCK DIAGRAM SECTION 5 EXPLODED VIEWS NOTE: -XX, -X mean standardized parts, so they may have some differences from the o

32、riginal one. Items marked “*” are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. The mechanical parts with no reference number in the exploded views are not supplied. Hardware (# mark) list and accessories and packing mater

33、ials are given in the last of this parts list. 5-1.CABINET AND BOARD SECTION 5-2.MECHANISM SECTION (MF-WMFX103-48) NOTE: Due to standardization, replacements in the parts list may be different from the parts specified in the diagrams or the components used on the set. -XX, -X mean standardized parts

34、, 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 All resistors are in ohms. METAL: metal-film resistor METAL OXIDE: Me

35、tal 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. Ref. No.Part No.DescriptionRemarksRef. No.Part No.DescriptionRemarks SECTION 6 ELECTRICAL PARTS LIST 17 18 19 20 Ref. No.Part No.DescriptionRe

36、marksRef. No.Part No.DescriptionRemarks 13-910-921-41CABINET (REAR) (CF-O) 23-910-899-11LID, BATT 33-910-896-01GROUND, MOTOR 43-910-538-01BUTTON (PLAY) 53-910-540-11BUTTON (REW) 63-910-539-11BUTTON (FF) 73-910-541-11BUTTON (STOP) 8A-3016-889-A MAIN BOARD, COMPLETE (US, 5E, 6E, 8E) 8A-3021-093-A MAIN

37、 BOARD, COMPLETE (EE) 8A-3021-094-A MAIN BOARD, COMPLETE (E, MX, AEP) 93-910-894-01TERMINAL (+), BATTERY 103-910-895-01TERMINAL (), BATTERY 113-364-675-01SPRING (CASSETTE) 133-910-911-01POINTER 143-933-675-01GEAR (TUNE) 153-910-902-12KNOB (TUNE) 16X-3375-408-1HOLDER (CF-U), CASSETTE ASSY (US, 5E, 6E

38、, 8E) 16X-3375-604-1HOLDER ASSY, CASSETTE (E, MX, AEP) 16X-3375-605-1HOLDER ASSY, CASSETTE (EE) 173-910-903-01SPRING, TORSION 183-910-920-41CABINET (FRONT) (CFO) (US, 5E, 6E, 8E) 183-910-920-01CABINET (FRONT) (CFO) (EE, E, MX, AEP) L1X-3371-847-1ANTENNA SUB ASSY, FERRITE-ROD 51X-3367-902-1ARM (N) AS

39、SY, PINCH 523-364-328-01SPRING, COMPRESSION 533-910-635-01SCREW 543-910-647-01LEVER (PR/O), PLAY 563-354-868-01BELT 573-352-758-21SCREW (M1.7), TOOTHED LOCK 583-321-483-11RING, RETAINING Ref. No.Part No.DescriptionRemarksRef. No.Part No.DescriptionRemarks 593-364-320-01GEAR (S REEL) 603-909-727-01GE

40、AR (REVERSE) 613-910-640-01GEAR (T REEL) 62X-3367-905-1CLUTCH ASSY 63X-3368-729-1CHASSIS ASSY HP9011-500-115-11HEAD, MAGNETIC (PLAYBACK) M9011-698-353-11MOTOR, DC (REEL/CAPSTAN)(WITH PULLEY) A-3016-889-A MAIN BOARD, COMPLETE (US, 5E, 6E, 8E) * A-3021-093-A MAIN BOARD, COMPLETE (EE) * A-3021-094-A MA

41、IN BOARD, COMPLETE (E, MX, AEP) * 3-910-894-01TERMINAL (+), BATTERY 3-910-895-01TERMINAL (), BATTERY C11-163-083-00CERAMIC CHIP1PF50V (EXCEPT EE) C11-163-086-00CERAMIC CHIP3PF50V (EE) C21-163-099-00CERAMIC CHIP18PF5%50V (EXCEPT EE) C21-163-089-00CERAMIC CHIP6PF50V (EE) C31-163-101-00CERAMIC CHIP22PF

42、5%50V (EXCEPT EE) C31-163-091-00CERAMIC CHIP8PF50V (EE) C41-163-089-00CERAMIC CHIP6PF50V (EXCEPT EE) C41-163-092-00CERAMIC CHIP9PFO.25PF 50V (EE) C51-163-239-11CERAMIC CHIP33PF5%50V (EXCEPT EE) C51-164-161-11CERAMIC CHIP0.0022uF10%100V (EE) C61-163-003-11CERAMIC CHIP330PF10%50V C71-164-005-11CERAMIC

43、 CHIP0.47uF25V C81-163-038-91CERAMIC CHIP0.1uF25V C91-163-038-91CERAMIC CHIP0.1uF25V C101-163-038-91CERAMIC CHIP0.1uF25V C111-163-117-00CERAMIC CHIP100PF5%50V C121-163-117-00CERAMIC CHIP100PF5%50V C131-163-117-00CERAMIC CHIP100PF5%50V C141-126-153-11ELECT22uF20%6.3V C151-163-078-11CERAMIC CHIP0.033uF10%25V C161-163-063-91CERAMIC CHIP0.022uF10%50V C171-126-154-11ELECT47uF20%6.3V C181-163-024-00CERAMIC CHIP0.018uF10%50V (US, 5E, 6E, 8E) C181-163-022-00CERAMIC CHIP0.012uF10%50V (EE, E, MX, AEP) C191-163-024-00CERAMIC CHIP0.018uF10%50V (US, 5E, 6E, 8E) C191-163-022-00CERAMIC CHIP0.012uF10%50V