索尼SONY WM-FX571电路图.pdf

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1、 1 Model Name Using Similar MechanismWM-FX551/FX553 Tape Transport Mechanism TypeMF-WMFX551-125 SERVICE MANUALTourist Model WM-FX571 RADIO CASSETTE PLAYER Ver 1.0 1999. 03 SPECIFICATIONS Radio section Frequency range FM : 87.5 108 MHz AM: 531 1,602 kHz Tape section Frequency response (Dolby NR off)

2、Playback : 20 18,000 Hz Output Headphones (2 REMOTE jack) Load impedance 8 300 General Power requirements 1.5 V One R6 (size AA) battery Rechargeable battery Dimensions (w/h/d) Approx. 109 79.2 29.4 mm (4 3/8 3 1/8 1 3/16 inches) incl. projecting parts and controls Mass Approx. 150 g (5.3 oz) Approx

3、. 210 g (7.5 oz) incl. a battery and a cassette Supplied accessories Stereo earphones with remote control MDR-WMF653 (1) Battery charger BC-820T (1) AC plug adaptor (1) Rechargeable battery (NC-AA) (1) Battery R6P (SR) (1) Carrying pouch (1) Design and specifications are subject to charge without no

4、tice. Manufactured under license from Dolby Laboratories Licensing Corporation. “DOLBY” and the double-D symbol a are trademarks of Dolby Laboratories Licensing Corporation. MICROFILM ? ? ? ? ? ? ? ? ? ? 2 TABLE OF CONTENTS 1. GENERAL .3 2. SERVICE NOTE .3 3. DISASSEMBLY 3-1. Case Assy . 4 3-2. Tune

5、r Board . 4 3-3. Audio Board. 5 3-4. Cassette Lid Assy . 5 3-5. Tape Mechanism Deck. 6 4. MECHANICAL ADJUSTMENTS.7 5. ELECTRICAL ADJUSTMENTS Tape Section . 7 Tuner Section.8 6. DIAGRAMS 6-1. Block Diagram . 9 6-2. IC Pin Description. 11 6-3. Printed Wiring Boards Tuner Section . 13 6-4. Schematic Di

6、agram Tuner Section.17 6-5. Schematic Diagram Audio Section . 20 6-6. Printed Wiring Board Audio Section .23 7. EXPLODED VIEWS 7-1. Cabinet Section . 29 7-2. Audio and Tuner Board Section.30 7-3. Tape Mechanism Section . 31 8. ELECTRICAL PARTS LIST .32 Flexible Circuit Board Repairing Keep the tempe

7、rature of the soldering iron around 270C 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 unsoldering. Notes on Chip Component Replacement Never reuse a disconnected chip co

8、mponent. Notice that the minus side of a tantalum capacitor may be dam- aged by heat. ? ? ? ? ? ? ? ? ? ? 3 screw (M1.4 5.0) screw (M1.4 5.0) TUNER board screw (M1.7 4.0) screw (M1.4 5.0) JIG AUDIO board 0 ! ! ! ! ! ! ! 9 8 7 6 5 4 3 2 1 SECTION 1 GENERAL LOCATION OF CONTROLS SECTION 2 SERVICE NOTE

9、Regarding the method of adjustment and voltage check, perform sections 3-1 and 3-2 of the DISASSEMBLY, and attach the JIG (extension cable) to the AUDIO board as shown below. JIG Part No.: J-2503-005-A 1 OPEN knob 2 Display window 3 PRESET + /AMS FF (Fast Forward) button 4 TUNING + button 5 TUNING b

10、utton 6 ENTER button 7 PRESET /AMS REW (Rewind) button 8 MENU button 9 RADIO ON/BAND button ! SET button ! p /RADIO OFF button ! “” /REPEAT button ! VOLUME control ! C HOLD knob ! 2 REMOTE jack ! Battery case ! DC IN 1.5V jack ? ? ? ? ? ? ? ? ? ? 4 1 screw (M1.7 6) 5 TUNER board 4 3 screw (M1.4 4.5)

11、 7 guide (TU) 6 2 screw (M1.7 3) 1 screw (M1.7 6) 6 case assy 4 claws 3 screws (M1.4 2.2) 1 screw (M1.4 2.2) 2 screw (M1.4 3.0) 5 CASE ASSYTUNER BOARDAUDIO BOARD CASSETTE LID ASSY TAPE MECHANISM DECKSET SECTION 3 DISASSEMBLY Note : Follow the disassembly procedure in the numerical order given. 3-1.

12、CASE ASSY 3-2. TUNER BOARD Note : Disassemble the unit in the order as shown below. ? ? ? ? ? ? ? ? ? ? 5 2 screw (M1.4 2) 5 cassette lid assy 3 screw (M1.4 1.6) 1 OPEN button 4 7 AUDIO board 1 Unsolder the 3 places. 2 battery terminal () 4 battery terminal (+) 3 Unsolder the 5 places. 5 Flexible bo

13、ard 6 3-3. AUDIO BOARD 3-4. CASSETTE LID ASSY ? ? ? ? ? ? ? ? ? ? 6 2 1 3 4 reel ornament 5 tape mechanism deck 3-5. TAPE MECHANISM DECK ? ? ? ? ? ? ? ? ? ? 7 PRECAUTION 1.Specified voltage : 1.3V 2.Switch position MENU button : a NR light off (OFF) : AVLS light off (OFF) TAPE SECTION0 dB=0.775 V Te

14、st Tape Tape Speed Adjustment Procedure : 1.Playback WS-48A (Tape center part) in the FWD state and adjust RV601 so that the frequency counter reading becomes 3,000 Hz. Specification Value: Digital frequency counter 2,970 to 3,030 Hz 2.Playback WS-48A (Tape center part) in the REV state. Check that

15、frequency counter reading is within 60 Hz of the reading of step1. Adjustment Location : MAIN BOARD SIDE A Torque meter CQ-102C CQ-102RC CQ-201B Mode FWD FWD Back Tension REV REV Back Tension FF REW Test tape WS-48A (3kHz, 0dB) set 16 2 REMOTE jack (J701) + Frequency counter RV601 : Tape speed SECTI

16、ON 4 MECHANICAL ADJUSTMENTS PRECAUTION 1.Clean the following parts with a denatured-alcahol-moistened sweb : Playback headPinch roller Rubber beltCapstan 2.Demagnetize the playback head using a demagnetizer. 3.Do not use a magnetized screwdriver for adjustments. 4.After adjusting, apply screw-lockin

17、g compound onto the adjusted parts. 5.Unless specified otherwise, use a specified voltage (1.3V) to perform the adjustments. Torque Measurement Meter reading 20 to 30 g cm (0.28 to 0.42 oz inch) 0.4 to 2.0 g cm (0.0056 to 0.028 oz inch) 20 to 30 g cm (0.28 to 0.42 oz inch) 0.4 to 2.0 g cm (0.0056 to

18、 0.028 oz inch) More than 40 g cm (More than 0.56 oz inch) Type WS-48A Signal 3kHz, 0dB Purpose Tape Speed Adjustment SECTION 5 ELECTRICAL ADJUSTMENTS ? ? ? ? ? ? ? ? ? ? 8 FM VCO Adjustment Procedure : 1.Connect the frequency counter to the positions shown below. 2.Turn the set to 98 MHz. 3.Adjust

19、RV1 for 19,000 Hz reading on the frequency counter. Specification Value: Digital frequency counter 18,900 to 19,100 Hz TUNER SECTION0 dB=1 V AM RADIO ON/BAND button : AM FM RADIO ON/BAND button : FM Repeat the procedures in each adjustment several times, and the frequency coverage and tracking adjus

20、tments should be finally done by the trimmer capacitors. AM TRACKING ADJUSTMENT Adjust for a maximum reading on level meter. L4621kHz CT11,395kHz FM IF ADJUSTMENT Adjust for a maximum reading on level meter. L310.7MHz FM VOLTAGE ADJUSTMENT 1.05 to 1.15 V L276MHz L3 : FM IF Adjustment TP1 TP13 IC7 L2

21、 : FM Voltage Adjustment RV1 : FM VCO Adjustment L4 : AM Tracking Adjustment CT1 : AM Tracking Adjustment 100 + Frequency counter 1F TP23 (IC7 pin !) IC7 pin 9 FM RF signal generator Carrier frequency : 98MHz Modulation : No moduration Output level : 0.1V (100dB) 0.01F to ANT (TP1) set 16 2 REMOTE j

22、ack (J701) + FM RF signal generator 22.5kHz frequency deviation by 400Hz signal. Output level : as low as possible 0.01F to ANT (TP1) 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 set. Adjustment

23、Location : TUNER BOARD SIDE A ? ? ? ? ? ? ? ? ? ? Pin No. 1 to 3 4 to 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 I/O O O O O O O O I I I I I O I O I I I I O O I/O O O O O O O O O O O O O O O O I O O I O Descr

24、iption Common terminal. Segment output terminal. Remote control data output. DDC control terminal (when DDC ON = L). BAND control output (when AM = Hi-imp, when FM = L). MUTE control terminal (when MUTE ON = L). HEAD select terminal (when FWD = Hi-imp, when REV = L). Tone control terminal (when BOOS

25、T ON = Hi-imp, when OFF = L). IF REQ control terminal (when REQ = Hi-imp). HOLDER detect input (when HOLDER CLOSE = H). Communication request from the remote controller. (H = VCC). HOLDER detect and TAPE error erase detect terminal. TAPE rotating direction detect terminal. Input when the key is pres

26、sed during HOLD (H = AD Vref). Terminal for controlling the rotation detect circuit. Rotation detect input. AMS sensitivity select (when AMS = H, when BL.SKIP = L). Tape sound existing or not-exiting detect (Music exists: L, music does not exist: H. Voltage detect input. KEY input terminal. Referenc

27、e voltage of AD IN 1, 2. LED output terminal. E2PROM CS control terminal. E2PROM DATA I/O. E2PROM CLOCK terminal. BEEP (when TC : 1.6 kHz, when CF : 3.0 kHz). MOTOR control terminal. MOTOR control terminal. MOTOR control terminal. REC circuit control output. RADIO system control terminal (when RADIO

28、 ON = L). Terminal for controlling AVLS (when ON = L). AMP control output (when AMP ON = H). Tone control terminal (when GRV = L, when MB = H). PL control terminal. TC/CF select output (when PRE OFF = H, when PRE ON = Hi-imp). Terminal for controlling DOLBY circuit (when OFF = H, when ON = Hi-imp).

29、DDC control terminal (ON at Hi-imp, OFF at L). TUNER MONO/STEREO select terminal (MONO at H). TEST terminal (Normal operation at L or NC). IF input. TUNER sensitivity select terminal (LOCAL at H, DX at L). Phase comparator output. External interrupt terminal. Pre-scaler output (FM at H). Power suppl

30、y GND terminal. Function COM 1 to 3 S1 to 22 R DATA OUT DDC1 CTL BAND AM/FM MUTE CTL F/R CTL BST CTL IF REQ HOLD SW R DATA IN HOLDER, TUME F/R SW HOLD SENS PHOTO CTL PHOTO IN AMS CTL AMS IN BATT DET KEY IN AD Vref LED CTL CS M DATA I/O M CLOCK BEEP MOTOR CTL MOTOR DIR MOTOR BRK REC CTL RADIO CTL AVL

31、S CTL AMP CTL GRV/MB CTL PM CTL PRE AMP CTL DOLBY CTL DDC2 CTL MONO/ST TEST IF IN LOCAL/DX DO HOLD PSC GND Circuit Output Output (Nch) Output (Nch) Output (Nch) Output (Nch) Output (Nch) Output (Nch) Input Input Input Input Input Input/Output Input/Output Input/Output Input/Output Input/Output Input

32、/Output Input/Output Input/Output Input/Output Input/Output Input/Output Input/Output Input/Output Input/Output Input/Output Input/Output Input/Output Input/Output Input/Output Input/Output Ternary output Ternary output Ternary output Ternary output Output Output External interrupt Remarks VLD at Hi

33、gh level. Pull-up at outside (TUNER side). Pull-up at outside (Vref). Pull-up at outside (Vcc). Pull-up at outside (Vcc). Pull-up at outside (Vcc). Pull-up at outside (Vref). Pull-up at outside (VLCD). A/D input. A/D input. A/D input. A/D input. Pull-down at outside. Pull-up at outside. Open Pin Nam

34、e COM 1 to 3 S1 to 22 P13-1 P13-2 P13-3 P14-0 P14-1 P14-2 P14-3 IN2 K0 K1 K2 K3 P1-1 P1-2 P1-3 P2-0/AD IN1 P2-1/AD IN2 P2-2 P2-3 P3-0 P3-1 P3-2 P3-3/BUZR P4-0 P4-1 P4-1 P4-2 P4-3 P5-0 P5-1 P5-2 P5-3 P6-0 P6-1 P6-2 P6-3 MUTE TEST IF IN DO1/OT DO2 HOLD PSC GND INT H Hi-imp Hi-imp Hi-imp Hi-imp L Hi-im

35、p L L L L H L L L L L L L L H L L L L Hi-imp Hi-imp Hi-imp L L H ACT L L Hi-imp L VCC AD Vrcl H H H H H H H L L H H H Hi-imp Hi-imp Hi-imp H Pin No. 70 71 72 73 74 75 76 77 78 79 80 I/O I O I O I Description Pre-scaler input. AM local oscillator output. Power supply voltage. RESET terminal (H during

36、 operation). Terminal to which external oscillator is connected. Terminal to which external oscillator is connected. Terminal to which external capacitor is connected to stabilize crystal oscillator power supply. Terminal to step-up power supply voltage for LCD drive. Terminal to step-up power suppl

37、y voltage for LCD drive. Terminal to step-up power supply voltage for LCD drive. Terminal for 1.5 V constant voltage power supply of LCD drive. Function FM IN AM IN VDD RESET XOUT XIN VXT VLCD C1 C2 VEE CircuitRemarksPin Name FM IN AM IN VDD RESET XOUT XIN VXT VLCD C1 C2 VEE INT L ACT H IC1 TC9326F-

38、051 (SYSTEM CONTROL) 6-2. IC PIN DESCRIPTION 12 9 10 11 WM-FX571 6-1. BLOCK DIAGRAM SECTION 6 DIAGRAMS FUNCTION KEY S701 FM/AM RF,IF AMP IC7 VCC1 T2 AM MIX CF2 10.7MHz CF3 450kHz450kHz MIX OUT4 FM IF IN 3 AM IF IN 6 AM OSCL.P.F Q16,17 CT1, L4 CT1 AM TRACKING L OUT14 R OUT15R CHFWD HP301 PB HEAD REV

39、L L R CH GND REMO DATA VCC L CH S1-5,7-11 ON OFF HOLD DDC CONT S702 (F/R) RADIO +B SWITCH Q18 SYSTEM CONTROL IC1 25 MOTOR BRK 52 PH701 BRAKE SWITCH Q601,602 SPEED TAPE RV601 START 8 DIR 6 IN 10 MOTOR SERVO IC601 U19 V1 W3 425 X IN 75 X OUT 74 X701 75kHz 13 COM1COM3S1S22 04 LIQUID CRYSTAL DISPLAY PAN

40、EL REMOTE J701 : FM Signal Path R-CH is omitted. : PB : AM FM LOCAL/DX Q1 RF IN16MIX 5OSC 8RF OUT FM FRONT END IC3 D2 D1 FM IF AMP Q4 FM VOLTAGE L2 L2 FM IF L1 L1 CF1 10.7MHz FM IF AMP Q6 FM IN2 5FM OUT PRESCALER IC2 PSC7 L4 AM FERRITE-ROD ANTENNA AM RF24 AM LOCAL/DX Q2 Q7 RF AMP T1 AM OSC 2 IF REQ

41、SWITCH Q15 D3 D4 IF REQ11 7QUAD 17VCO FM VCO RV1 CF4 10.7MHz 18LP2A 19LP2B BAND SELECT Q5 5VCC Q8 Q304 VCC1 RADIO +B SWITCH Q7 VCC22.8V 16LPF1 Q8 Q14 10IF OUT Q13 FWD34 18 REV33 F/R SW26 NR SW19 BST SW62 16 47 BST IN Q301 (2/2) 25 DET Q301 (1/2) PWR AVLS CONT Q302 Q303 BEEP60 MUTE SW59 PW SW58 AVLS64 3 24 AMS 22 PRE SW 57 63 56 50 AVLS PW C AGC AUDIO POWER AMP IC301 GND COM VCC1 S901 (ATS) PLUNGER DRIVE Q701,702 PM901 PLUNGER S703 (HOLDER) 65 LOCAL/DX 36 F/R SW 66 DO 68 PSC 70 FM IN 32 IF REQ 64 IF IN 71 AM IN 62 MONO/ST 54 RADIO CTL 30 F/R CTL BST IN DET 28 BA