索尼SONY WM-FX171电路图.pdf

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1、WM-FX171/FX173/FX177 Canadian Model WM-FX173/FX177 AEP Model E Model WM-FX171/FX173 SERVICE MANUAL RADIO CASSETTE PLAYER MICROFILM SPECIFICATIONS Model Name Using Similar MechanismNEW Tape Transport Mechanism TypeMF-WMFX171-114 Frequency range FM : 87.6 - 107.9 MHz AM : 531 - 1,602 kHz Power require

2、ments 3V DC batteries R6 (AA) 2 / External DC 3V power sources Dimensions FX173 : 88.5 118.6 38.2 mm (3 1/2 4 3/4 1 9/16 inches) (w / h / d) incl. projecting parts and controls FX171/FX177 : 88.5 118.6 37.6 mm (3 1/2 4 3/4 1 1/2 inches) (w / h / d) incl. projecting parts and controls Mass FX173 : Ap

3、prox. 165 g (5.9 oz) / Approx. 245g (8.7 oz) incl. batteries and a cassette FX171/FX177 : Approx. 160 g (5.7 oz) / Approx. 240 g (8.5 oz) incl. batteries and a cassette Supplied accessories Stereo headphone or Stereo earphones (1) / Belt clip (1) Design and specifications are subject to change witho

4、ut notice. Photo : WM-FX173 Ver 1.2 2000. 01 With SUPPLEMENT (9-923-333-81) ? ? ? ? ? ? ? ? ? ? 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 (wi

5、thin 3 times). Be careful not to apply force on the conductor when soldering or 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.GENERAL2 2.DISASSEMBLY 2-1.Cabine

6、t (Front) Assy 3 2-2.Main Board4 2-3.Cassette Lid 4 2-4.Mechanism Deck 5 2-5.Belt, Motor (Reel/Capstan) 5 3.MECHANICAL ADJUSTMENT6 4.ELECTRICAL ADJUSTMENT6 5.DIAGRAMS 5-1.Block Diagram 8 5-2.Schematic Diagram (FX171/FX177 Models) 10 5-3.Printed Wiring Board (FX171/FX177 Models)13 5-4.Printed Wiring

7、Board (FX173 Model) 17 5-5.Schematic Diagram (FX173 Model) 21 5-6.IC Block Diagrams 24 6.EXPLODED VIEWS 6-1.Cabinet Section25 6-2.Main Board Section 27 6-3.Mechanism Section-1 28 6-4.Mechanism Section-2 29 7.ELECTRICAL PARTS LIST30 This section is extracted from instruction manual. LOCATION OF CONTR

8、OL ? ? ? ? ? ? ? ? ? ? 3 SECTION 2 DISASSEMBLY Note :Follow the disassembly procedure in the numerical order given. B C D E F G H I J K L A Cassette lid Cabinet (front) assy 1 Two screws screw (B 1.7 9), tapping 2-1.CABINET (FRONT) ASSY 2 Insert the precision screwdriver (1.4 mm flat-blade) into the

9、 slit at claw A and release the claw. 3 Remove the cabinet (front) assy. (Release all claws B to L in alphabetical order.) This set can be disassembled in the order shown below. 2-1. CABINET (FRONT) ASSY2-2. MAIN BOARD 2-3. CASSETTE LID 2-4. MECHANISM DECK2-5. BELT, MOTOR (REEL/CAPSTAN) ? ? ? ? ? ?

10、? ? ? ? 4 5 Spring (torsion) B A 1 Open the cassette lid. 4 Cassette lid. 2-2.MAIN BOARD 2-3.CASSETTE LID 2 Insert a precision screwdriver (1.4 mm flat-blade) vertically into portion A to release the hinge plate. 3 Portion B to release the hinge plate. 3 Remove the four solders. 4 Screw (M 1.4), too

11、thed lock (WH) 2 Flexible board (CN302) 6 MAIN board 5 Two claws 1 Head flexible board (CN301) ? ? ? ? ? ? ? ? ? ? 5 1 Insert the precision screwdriver (1.4 mm flat-blabe) in to the slit and release two claws. 2 Remove the mechanism deck in the direction of the arrow, 2 Two screws screw (M 1.4), spe

12、cial head 3 Motor (reel/capstan) 1 Belt 2-4.MECHANISM DECK 2-5.BELT, MOTOR (REEL/CAPSTAN) ? ? ? ? ? ? ? ? ? ? 6 SECTION 3 MECHANICAL ADJUSTMENT SECTION 4 ELECTRICAL ADJUSTMENT PRECAUTION 1.Clean the following parts with a denatured-alcahol-moistened sweb : Playback headPinch roller Rubber beltCapsta

13、n 2.Demagnetize the playback head using a demagnetizer. 3.Do not use a magnetized screwdriver for adjustments. 4.After adjusting, apply screw-locking compound onto the adjusted parts. 5.Unless specified otherwise, use a specified voltage (3.0V) to perform the adjustments. Torqu Measurement Mode FWD

14、FWD Back Tension REV REV Back Tension FF REW Torque meter CQ-102C CQ-102RC CQ-201B Meter reading 20 - 30 g cm 0.4 - 2.0 g cm 20 - 30 g cm 0.4 - 2.0 g cm More than 40 g cm PRECAUTION 1.Specified voltage : 3.0V 2.Switch position AVLS switch: NORM CASSETTE SECTION Test Tape Tape Speed Adjustmnet Proced

15、ure : 1.Playback WS-48A (Tape center part) and adjust RV601 so that the frequency counter reading becomes 3,000Hz 15Hz. 2.Playback WS-48A (Tape top and end). Check that frequency counter reading is within 1.5% of the reading of step1. Adjustment Point : MAIN BOARD SIDE B Type WS-48A Signal 3kHz, 0dB

16、 Purpose Tape Speed Adjustment Test tape WS-48A (3kHz, 0dB) Set *1 PHONES jack + Frequency counter RV601 : Tape Speed *1 16: E, EA, C & SA, PA Models. 32: AEP, IT, E, CND, FR Models. Abbreviation CND: Canadian IT: Italian EE: East European EA: Saudi Arabia FR: French PA: Panama C & SA : Central and

17、South America ? ? ? ? ? ? ? ? ? ? WM-FX171/FX173/FX177 SECTION 5 DIAGRAMS 5-1.BLOCK DIAGRAM 7 8 9 TUNER SECTION AM BAND switch : AM FM BAND switch : FM Repeat the procedures in each adjustment several times, and the frequency coverage and tracking adjustments should be finally done by the trimmer ca

18、pacitors. Set *1 PHONES + FM RF signal generator 75kHz(100%) frequency deviation by 1Hz signal. Output level : as low as possible. 0.01F to IC1 pin 1 Level meter AM RF signal generator 30% amplitude modulation by 400Hz signal. Output level : as low as possible Put the lead-wire antenna close to the

19、set. CT1 (2/4) CT1 (1/4) CT1 (4/4) CT1 (3/4) Set jack *1 + Level meter (AC : 0.5 5V range) 2 AM FREQUENCY COVERAGE ADJUSTMENT Adjust for a maximum reading on level meter. L4 505 kHz 5 kHz (516.5 kHz 5 kHz) CT1 (4/4) 1,770 kHz 20 kHz (1,631.5 kHz 10 kHz) 1,690 kHz 10 kHz Adjustment Parts Location : M

20、AIN BOARD SIDE A MAIN BOARD SIDE B L1 : AM TRACKING Adjustment L3 : FM FREQUENCY COVERAGE Adjustment L2 : FM TRACKING Adjustment L4 : AM FREQUENCY COVERAGE Adjustment T1 : AM IF ( ) : EA, IT Models : EE Model FM FREQUENCY COVERAGE ADJUSTMENT Adjust for a maximum reading on level meter. L3 86.0 MHz 0

21、.2 MHz (87.35 MHz 0.1 MHz) 64.0 MHz 0.2 MHz CT1 (3/4) 109.5 MHz 0.3 MHz (108.25 MHz 0.2 MHz) FM TRACKING ADJUSTMENT Adjust for a maximum reading on level meter. L286 MHz (87.35 MHz) 64.0 MHz CT1 (2/4)109.5 MHz (108.25 MHz) AM TRACKING ADJUSTMENT Adjust for a maximum reading on level meter. L1620 kHz

22、 (800 kHz) CT1 (1/4)1,400 kHz (1,300 kHz) AM IF ADJUSTMENT Adjust for a maximum reading on level meter. T1 1,000 kHz 8 AM IF IN FM IF IN 7 IC301 31 L R 30 32 1 23 18 15 17 126 T1 CF1 CF2 AM IFT 4 35 RV301 VOLUME HP901 PLAYBACK HEAD M901 REEL/CAPSTAN MOTOR 34 2418 15 17 2023 19 36 1 8 4 LIMIT NORMAL

23、14 L OUT 13R OUT AM MIX AM OSC FM OSC FM RF OUT AM RF IN FM RF IN PRE + POWER AMP IC601 MOTOR DRIVE IC1 FM/AM,RF/AF AMP MAIN BOARD J302 J301 DC IN 3V Q301 PHONES POWER MUTE Q302 ST/MONO SW Q2 TU +B SW S305 AVLS D120 BATT S302 (POWER) S303(2/2) DX LOCAL 15 14 4U W IN+ 13S/S V VREF 5 6 21229 3 7 25 RV

24、601 TAPE SPEED S303(1/2) NORM Q101 Q201 TAPE SELECT SW S304 FM AM TAPE LP1 VCC2 16 LP2 VREF PRE OUT2 L MIX IN 2L MIX OUT L MIX OUT R PWR IN2 L PWR IN1 R HP IN 2L MIX IN 1R HP IN 1R PRE OUT1 R VREF L2 FM TRACKING CT1(2/4) CV2(2/4) X2 QUAD DET OUT MPX IN L3 FM FREQ. COVER CT1(3/4) CV3(3/4) 20 L4 AM FR

25、EQ. COVER CT1(4/4) CV4(4/4) 24 L1 AM TRACKING CT1(1/4) CV1(1/4) CP1 22 VCC1 6 21 RV351 HIGH RV352 LOW S351 MEGA BASS OFF ON 14 VREF S351 MEGA BASS OFF ON VREF M.B ON/OFF LOW BOOST GAIN COM VCC PWR MUTE 10 PRE MUTE AVLS PWR OUT 1(R) PWR OUT 2(L) MEGA BASS UNITMEGA BASS UNIT FX-171 MODELFX173 MODEL BP

26、F C&SA,CND MODEL EXCEPT C&SA,CND MODEL EXCEPT C&SA,CND MODEL S303(2/2) ST-MONO C&SA,CND MODEL 26 (TAPE SELECTOR) CrO2/ METAL 1/2 2/2 FX171 MODEL FX171 MODEL DRY BATTERY SIZE AA (IEC DESIGNATION R6) 2pcs, 3V ( ) : EA, IT Models : AEP, E, FR, EE Models ( ) : EA, IT, EE Models ( ) : EA, IT Models : EE

27、Model Signal path. F: FM f: AM E: PB ? ? ? ? ? ? WM-FX171/FX173/FX177 10 11 12 5-2.SCHEMATIC DIAGRAM (FX171/FX177 MODELS) Note: 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 in and 1/4 W or less unless

28、otherwise specified. : internal component. C : panel designation. U : B+ Line. H : adjustment for repair. Total current is measured with no cassette installed. Power voltage is dc 3V and fed with regulated dc power supply from external power voltage jack. Voltages and waveforms are dc with respect t

29、o ground under no-signal (detuned) conditions. no mark : PB (TAPE) () : AM : FM Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal produc- tion tolerances. Signal path. F: FM f: AM E: PB Abbreviation CND: Canadian model IT: Italian model EE: East Euro

30、pean model EA: Saudi Arabia model FR: French model PA: Panama model C & SA: Central and South America models 10101010 ? ? ? ? ? ? WM-FX171/FX173/FX177 5-3.PRINTED WIRING BOARD (FX171/FX177 MODELS) Ref. No.Location D120G-13 IC1F-14 IC301E-17 IC601E-18 Q2G-14 Q101E-15 Q201E-15 Q301F-16 Q302F-14 Semico

31、nductor Location 13 15 16 Note: X : parts extracted from the component side. : Through hole. b : Pattern from the side which enables seeing. (The other layers patterns are not indicated.) Caution: Pattern face side:Parts on the pattern face side seen from (Conductor B)the pattern face are indicated.

32、 Parts face side:Parts on the parts face side seen from (Component A)the parts face are indicated. 12 A B C D E F G H I 34567891011121314151617181920212223 MAIN BOARD (SIDE B)MAIN BOARD (SIDE A) 1-667-714- 11 (11) 1 5 9 1018 19 15 27 2836 30 25 16 (POWER) L R HP901 (PLAYBACK HEAD) 4 5 3 2 16 (BATT)

33、RV301 (VOLUME) FM AM TAPE (RADIO OFF) L R 5 1 24 20 15 1312 10 16 2/4 3/4 1/4 4/4 TUNING L1 EXCEPT C&SA,PA,FX177 MODEL EXCEPT C&SA,PA, FX177 MODEL C&SA,PA FX177 MODEL C&SA,PA, FX177 MODEL S305 AVLS NORM LIMIT NORM CrO2/ METAL FM ST MONO DX LOCAL J302 BLK BLK ORG ORG RED RED WHT WHT M901 REEL/CAPSTAN

34、 MOTOR MEGA BASS UNIT OFF ON DRY BATTERY SIZE AA (IEC DESIGNATION R6) 2PCS, 3V J301 DC IN 3V E,C&SA,EA,PA MODEL 4 6 2 Abbreviation CND: Canadian IT: Italian EE: East European EA: Saudi Arabia FR: French PA: Panama C & SA: Central and South America 14 ? ? ? ? ? WM-FX171/FX173/FX177 17 18 19 20 Ref. N

35、o.Location D120G-13 IC1F-14 IC301E-17 IC601E-18 Q2G-14 Q101E-15 Q201E-15 Q301F-16 Q302F-14 Semiconductor Location Note: X : parts extracted from the component side. : Through hole. b : Pattern from the side which enables seeing. (The other layers patterns are not indicated.) Caution: Pattern face si

36、de:Parts on the pattern face side seen from (Conductor B)the pattern face are indicated. Parts face side:Parts on the parts face side seen from (Component A)the parts face are indicated. 12 A B C D E F G H I 34567891011121314151617181920212223 5-4.PRINTED WIRING BOARD (FX173 MODEL) MAIN BOARD (SIDE

37、B)MAIN BOARD (SIDE A) 1-667-151- 11 (11) 1 5 9 1018 19 15 27 2836 30 25 16 (POWER) L R HP901 (PLAYBACK HEAD) 4 5 3 2 16 (BATT) RV301 (VOLUME) FM AM TAPE (RADIO OFF) L R 5 1 24 20 15 1312 10 19 2/4 3/4 1/4 4/4 TUNING L1 EXCEPT C&SA,CND MODEL EXCEPT C&SA,CND MODEL C&SA,CND MODEL C&SA,CND MODEL S305 AV

38、LS NORM LIMIT NORM CrO2/ METAL FM ST MONO DX LOCAL J302 BLK BLK ORG ORG RED RED WHT WHT M901 REEL/CAPSTAN MOTOR MEGA BASS UNIT HIGH HIGH LOW OFF ON DRY BATTERY SIZE AA (IEC DESIGNATION R6) 2PCS, 3V J301 DC IN 3V E,C&SA,EA MODEL 7 6 8 5 4 3 2 Abbreviation CND: Canadian IT: Italian EE: East European E

39、A: Saudi Arabia FR: French C & SA: Central and South America ? ? ? ? ? WM-FX171/FX173/FX177 5-5.SCHEMATIC DIAGRAM (FX173 MODEL) 21 22 23 Note: 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 in and 1/4 W

40、or less unless otherwise specified. : internal component. C : panel designation. U : B+ Line. H : adjustment for repair. Total current is measured with no cassette installed. Power voltage is dc 3V and fed with regulated dc power supply from external power voltage jack. Voltages and waveforms are dc

41、 with respect to ground under no-signal (detuned) conditions. no mark : PB (TAPE) () : AM : FM Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal produc- tion tolerances. Signal path. F: FM f: AM E: PB Abbreviation CND: Canadian model IT: Italian mode

42、l EE: East European model EA: Saudi Arabia model FR: French model C & SA: Central and South America models ? ? ? ? ? ? WM-FX171/FX173/FX177 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

43、for routine service. Some delay should be anticipated when ordering these items. Color Indication of Appearance Parts Example: KNOB, BALANCE (WHITE) . . . (RED) Parts of Color Cabinets Color SECTION 6 EXPLODED VIEWS When indicating parts by reference number, please include the board name. 6-1. CABINET SECTION 24 25 26 Ref. No.Part No.DescriptionRemarksRef. No.Part No.DescriptionRemarks 5-6.IC BLOCK DIAGRAMS The mechanical parts with no reference number in the exploded views are not supplied. Hardware (# mark) list and accessorie