索尼SONY WM-FX467ST电路图.pdf

《索尼SONY WM-FX467ST电路图.pdf》由会员分享，可在线阅读，更多相关《索尼SONY WM-FX467ST电路图.pdf（16页珍藏版）》请在收音机爱好者资料库上搜索。

1、Ver 1.0 2000.03 WM-FX277/FX467/FX467ST RADIO CASSETTE PLAYER SPECIFICATIONS US Model Model Name Using NEW Mechanism Type Similar MechanismWM-FX277: MF-WMFX277-114 Tape TransportWM-FX467/FX467ST: MF-WMFX467-114 Photo : WM-FX467 SERVICE MANUAL Frequency range FM: 87.5 - 108 MHz AM: 530 - 1,710 kHz TV:

2、 2 - 13 ch Power requirements 3V DC batteries R6 (AA) x 2 Dimensions (w/h/d) Approx. 91.4 x 115.5 x 35.0 mm (3 58 x 4 58 x 1 716 inches) incl. projecting parts and controls Mass FX467/FX467ST: Approx. 155 g (5.5 oz)/Approx. 235 g (8.3 oz) incl. batteries and a cassette FX277: Approx. 145 g (5.2 oz)/

3、Approx. 225 g (8.0 oz) incl. batteries and a cassette Supplied accessories Stereo headphones or Stereo earphones (1) Carrying case with belt clip(1) Design and specifications are subject to change without notice. Battery life (approximate hours) (EIAJ*) Sony alkaline LR6 (SG)Sony R6P (SR) Tape playb

4、ack257.5 Radio reception4014 * Measured value by the standard of EIAJ (Electronic Industries Association of Japan). (Using a Sony HF series cassette tape) Note The battery life may shorten depending on the operation of the unit. ? ? ? ? ? ? ? ? ? ? 2 0 0 7 . 0 4. 30 Q Q : 37 6 315150 手机: 13942 2 96

5、513 2 Specifications . 1 1.GENERAL Location and Function of Controls . 2 2.DISASSEMBLY 2-1. Cabinet (Front) . 3 2-2. Main Board . 3 2-3. Mechanism Deck . 4 2-4. Belt, Capstan/Reel Motor (M601) . 4 2-5. Cassette Holder. 5 3.ADJUSTMENTS 3-1. Mechanical Adjustments. 6 3-2. Electrical Adjustments . 6 4.

6、DIAGRAMS 4-1. Explanation of IC Terminals. 9 4-2. Block Diagram. 10 4-3. Printed Wiring Boards . 13 4-4. Schematic Diagram. 17 5.EXPLODED VIEWS 5-1. Cabinet Section. 21 5-2. Mechanism Deck Section (WM-FX277). 22 5-3. Mechanism Deck Section (WM-FX467/FX467ST) . 23 6.ELECTRICAL PARTS LIST. 24 Flexible

7、 Circuit Board Repairing Keep the temperature 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 replace

8、ment Never reuse a disconnected chip component. Notice that the minus side of a tantalum capacitor may be dam- aged by heat. TABLE OF CONTENTS SECTION 1 GENERAL LOCATION AND FUNCTION OF CONTROLS This section is extracted from instruction manual. HOLD OFF AM FM TV TUNING + / - ENTER MEGA BASS NORM Cr

9、O2 / METAL DX LOCAL AVLS NORM LIMIT VOLUME x STOP M N PLAY m DIR Y (FX467 / FX467ST only) MODE s / d (FX467 / FX467ST only) PRESET + FX467 / FX467ST i ? ? ? ? ? ? ? ? ? ? 3 SECTION 2 DISASSEMBLY Note : Follow the disassembly procedure in the numerical order given. 2-1. CABINET (FRONT) 2-2. MAIN BOAR

10、D z The equipment can be removed using the following procedure. Main boardCabinet (Front) Cassette holder Mechanism deckBelt, Capstan/reel motor (M601)Set Cabinet (Front) Cabinet (center) sub ASSY Cassette holder 4 Claw 4 Claw 2 5 1 Claws 1 Claws 3 Claws 1 Claws Main board 1 Screw Orange Black White

11、 Red Cabinet (center) sub ASSY Head flexible board 2 Remove solder 3 Claws 4 ? ? ? ? ? ? ? ? ? ? 4 2-3. MECHANISM DECK 2-4. BELT, CAPSTAN/REEL MOTOR (M601) Mechanism deck Cabinet (center) sub ASSY 1 Claws 2 2 Belt Stopper 1 Claw 4 Capstan/reel motor (M601) wheel ASSY (P), capstan (FX467/FX467ST) whe

12、el ASSY (P), capstan Belt How to apply the belt Capstan/reel motor (M601) 3 Screws (M1.4) Mechanism deck ? ? ? ? ? ? ? ? ? ? 5 Cassette holder 4 Spring (torsion) Hinge Hinge 1 5 Hinge Cabinet (center) sub ASSY Hinge Projection Projection 3 Move the hinge away from projection 2 Move the hinge away fr

13、om projection Spring (torsion) Hinge Hinge Cassette holder Cabinet (center) sub ASSY 1 2 4 3 1Insert the spring (torsion) to the L shape slot as shown in the figure. 2,3 Insert the hinge of the “Cassette holder ”. 4Close the “Cassette holder” then press it. 2-5. CASSETTE HOLDER z CAUTIONS DURING ASS

14、EMBLY ? ? ? ? ? ? ? ? ? ? 6 SECTION 3 ADJUSTMENTS 3-2. ELECTRICAL ADJUSTMENTS PRECAUTION Supplied voltage : 2.5V. Switch and control position MEGA BASS : OFF VOLUME control : maximum AVLS : NORM TAPE SECTION Test Tape TypeSignalUsed for WS-48A3kHz, 0dBTape Speed Adjustment Tape Speed Adjustment Proc

15、edure : (FX277) 1. Playback WS-48A (tape center part) and adjust RV601 so that the frequency counter reading becomes 3,000Hz. Standard value : 2,9853,015Hz 2. Playback WS-48A (tape top and end) . Check that frequency counter reading is within 1.0% of the reading of step 1. (FX467/FX467ST) 1. Playbac

16、k WS-48A (tape center part) in the FWD state and ad- just RV601 so that the frequency counter reading becomes 3,000Hz. Standard value : 2,9853,015Hz 2. Playback WS-48A (tape center part) in the REV state. Check that frequency counter reading is within 1.0% of the reading of step 1. Adjustment Locati

17、on : 0 dB = 0.775V set test tape WS-48A (3kHz, 0dB) frequency counter 32 phones jack (J301) 3-1. MECHANICAL ADJUSTMENTS 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 demagnet

18、izer. Do not use a magnetized screwdriver for the adjustments. 3. These measurement and adjustment should be performed with the rated power supply voltage (2.5 V) unless otherwise noted. Torque Measurement ModeTorque meterMeter reading FWD 20 42 g cm CQ-102C (0.28 0.58 oz inch) FWDless than 2 g cm b

19、ack tension(less than 0.027 oz inch) REV20 42 g cm (FX467/FX467ST)(0.28 0.58 oz inch) REVCQ-102RC less than 2 g cm back tension (less than 0.027 oz inch) (FX467/FX467ST) FF, REWCQ-201B more than 60 g cm (more than 0.84 oz inch) RV601 : Tape speed Adjustment ? ? ? ? ? ? ? ? ? ? 7 TUNER SECTION AM Sec

20、tion BAND : AM TV/FM Section BAND : TV or FM AM IF ADJUSTMENT Adjust for a maximum reading on level meter. RV2450kHz AM FREQUENCY COVERAGE ADJUSTMENT Adjust partsFrequency display Reading on digtal voltmeter Confirmation530kHzStandard value : 3V or less L7 1,710kHz Adjustment value : 10.0V Standard

21、value : 9.9-10.1V AM TRACKING ADJUSTMENT Adjust for a maximum reading on level meter. L3620kHz CT11,400kHz TV and FM FREQUENCY COVERAGE CONFIRMATION Frequency displayReading on digtal voltmeter Confirmation2CH (TV)Standard value : 1.6 - 2.2V Confirmation108MHz (FM)Standard value : 11.0V or less FM T

22、RACKING ADJUSTMENT Adjust for a maximum reading on level meter. L498MHz Confirmation108MHz TV TRACKING ADJUSTMENT Adjust for a maximum reading on level meter. L52CH Confirmation13CH Adjustment Location : Main board (See page 8) 0 dB = 1 V Repeat the procedures in each adjustment several times, and t

23、he frequency coverage and tracking adjustments should be finally done by the trimmer capacitors. 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. set 32 phones jack (J301) level meter R205 R105 C1 C35 C310

24、C312 C39 C40 L4 L5 TUNER GND TP (FM/TV IN) (L) STID S304 S303 -2 -1 -2 -1 FM RF signal generator 22.5kHz frequency deviation by 400Hz signal. Output level : as low as possible TP (FM/TV IN) 0.01F MAIN BOARD (Side B) Frequency Coverage Adjustment Setting : D401 D402 C401 C403 C405 C406 R401 R402 R403

25、 R19 C402 C404 T401 GND TP (VT) TP (VT) TP (GND) MAIN BOARD (Side B) digital voltmeter (DC range) ? ? ? ? ? ? ? ? ? ? 8 Adjustment Location : IC1 MAIN BOARD (SIDE A) RV1 : FM VCO Adjustment L7 : AM Frequency Coverage Adjustment RV2 : AM IF Adjustment L4 : FM Tracking Adjustment L5 : TV Tracking Adju

26、stment L3 : AM Tracking Adjustment CT1 : AM Tracking Adjustment FM VCO Adjustment Procedure : C1 C35 C310 C312 C39 C40 L4 L5 TP (FM/TV IN) (L) STID S304 S303 -2 -1 FM RF signal generator Carrier frequency : 98MHz Modulation : No modulation Output level : 0.1V (100dB/ V) TP (FM/TV IN) 0.01F MAIN BOAR

27、D (Side B) 1. Connect the frequency counter as shown in the figure. 2. Turn the set to 98MHz. 3. Adjust RV1 for 76kHz reading frequency counter. Standar value : 75.8 - 76.2kHz 3 C25 R4 R6 RV1 L1 L2 C4 C5 C6 C8 C11 C15 C10 8 C19 R9 R15 D2 D4 C20 C21 C26 C28 C31 C34 IC1 R17 L6 37 C3 R20 40 3135 30 21

28、25 201115 1 5 10 frequency counter 33K 1 F IC1 7 pin IC1 0 pin + MAIN BOARD (Side A) ? ? ? ? ? ? ? ? ? ? 9 10 12 11 4-2. BLOCK DIAGRAM Signal path. F: FM, TV f: AM E: PB WM-FX277/FX467/FX467ST Pin No.Pin nameI/ODescliption 1XOUTOCrystal oscillator output (75kHz). 2TEST2Not used (Ground). 3PA3IKey in

29、put. 4PA2IKey input. 5PA1IKey input. 6PA0IKey input. 7PB3OKey output. 8PB2OKey output. 9PB1OKey output. 10LOCAL/DXNot used (OPEN). 11HOLDIHOLD switch input. “H”: ON, “L”: OFF 12LOCAL SWNot used (OPEN). 13TV (H)Not used (OPEN). 14BANDOBand select signal output. 15SDITuning signal detect input. 16COMP

30、IComparator input. 17N/R SWIN/R switch input. 18BACK UPIBack up voltage input. 19AMP ONOPower ON/OFF signal output. 20BEEPOBeep signal output. 21BATT CHECKIBack up cancel input. 22BATT REFIA/D reference voltage input. 23Not used (Ground). 24VSSGround terminal. 25RADIO ONORadio ON signal output. 26ME

31、GA BASSOMEGA BASS ON signal output. 27MUTEOMute ON signal output. 28TAPEITape ON input. 29PRE CTLOPreamplifier control output. 30MOTOR CTLOMotor control output. 31IDIDestination select input. 32-44S1-13OLCD segment output. 45-48COM1-4OLCD common output. 49-52DBR1-4LCD power supply. 53RESETIReset inp

32、ut (Fixed “H”). 54TU VCCNot used (OPEN). 55VDDPower supply. 56FM INIFM input. 57AM INIAM input. 58VSSGround terminal. 59E.OOError output. 60LPF INILPF input. 61LPF OUTOLPF output. 62LPF GNDGround terminal. 63TEST 1Not used (Ground). 64X INICrystal oscillator input (75kHz). SECTION 4 DIAGRAMS 4-1. EX

33、PLANATION OF IC TERMINALS IC702LC72348W-CFX1705 SYSTEM CONTROL ? ? ? ? ? S701 HOLD ON OFF PRESET + S710 TV S711 FM S712 AM OFF S708 ENTER MEGABASS FB101 FB201 FB301 R18 R205 R105 R11 C107 C207 C24 C29 D703 D401 D402 Q401 C401 C403 C405 C406 R401 R403 R19 C35 C311 C310 C39 R107 R207 C402 C40 JR1 JR2

34、C712 L4 RV301 L7 RV601 (TAPE SPEED) C16 C9 C12 C17 C404 C303 C308 C305 C502 C104 C204 L5 T401 PB3 (R) PW GND (L) MEGA MIX IN MIX IN GND +B TAPE +B PRE GND VREF PA1 BASS PB1 TUNE COMP PRE CTL TUNER GND (R) PA2 PWIN (L) MIX OUT TP (FM/TV IN) PWIN (R) VREF (L) MIX OUT PWOUT PWOUT (R) (L) STID (COM) PWO

35、UT GND GND PA3 TUNER VCC AMP ON PA0 PB2 VDD MUTE VCC +B L-CH R-CH D1 L-CH R-CH HP601 PLAYBACK HEAD BCE AVLS S304 S304 S303 S303 -2-1 -2 -1 -2 -1 CrO2/METAL NORM LIMIT NORM L3 AM FERRITE-ROD ANTENNA ND701 LIQUID CRYSTAL DISPLAY PANEL ORG BLK WHT RED WVU COM M M601 CAPSTAN/REEL MOTOR 11 (11) FX277 : 1

36、-677-908- FX467/467ST : 1-677-907- FX277 : 1-677-908- FX467/467ST : 1-677-907- DRY BATTERY SIZE AA (IEC DESIGNATION R6) 2PCS, 3V MAIN BOARD (SIDE B) PRE GND L-CH R-CH C30 PRESET LOCAL DX 234567891011121314151617181920 A 1 B C D E F G H L-CH R-CH R-CH L-CH FWD REV HP601 PLAYBACK HEAD HEAD FLEXIBLE BO

37、ARD HEAD FLEXIBLE BOARD FX277 FX467/FX467ST 02 ECB Q701 R702 R501 Q502 R504 R503 R502 Q501 C501 C702 C704 C705 C707 C708 C709 C710 C711 R718 R720 R717 L702 R605 R606 R607 R304 R710 R106 R206 C703 1 5 10 16 1720 25 30 32 33 35 40 45 48 49 50 55 60 64 R711 R712 R713 R714 R715 R716 IC701 C701 R704 R705

38、 R706 R707 C309 R303 C106 C206 R701 R708 C603 R201 R202 R203 R101 R102 R103 R104 R601 R603 C101 C201 C302 C304 C105 C205 Q301 R305 C604 C605 C606 C607 R604 C306 C108 C208 CT1 C22 C301 R301 R10 R13R14 R16 D3 Q3 C27 C25 C32 C33 R3 R4 R5 R6 R7 RV1 RV2 L1 L2 C4 C5 C6 C7 C8 C11 C13 C14 C15 C10 C18 C19 R8

39、 R9 R15 D2 D4 C20 C21 C23 C26 C28 C31 C34 TH601 X701 IC702 IC301 IC1 L401 R17 R302 C307 R204 FB302 R722 C714 R703 R12 L6 C3 R721 C203 C103 C602 C601 R602 S301 (TAPE ON) R20 C715 2 1 3 37 40 45 36 48 1510 13 15 20 12 151012 253035 24 40 3135 30 21 25 201115 1 5 10 MAIN BOARD (SIDE A) 11 (11) FX277 FX

40、467/FX467ST R202 R203 R101 R103 R104 R601 C101 C102 C201 C202 R204 C203 C103 J301 i RV301 VOLUME w S709 S705 TUNING S702 TUNING+ TP (VT) S703 S706 S704 C503 BEC BEC S302 (N/R SW) FX467/FX467ST 15 16 13 14 WM-FX277/FX467/FX467ST D1F-2 D2C-18 D3D-18 D4D-18 D401B-6 D402B-5 D703B-10 IC1C-18 IC301E-14 IC701E-15 IC702D-15 Q3D-18 Q301F-14 Q401B-5 Q501C-13 Q502B-13 Q701B-13 Ref. No.Location z Semiconductor Location 4-