Sony MW-FX277 Service Manual Download Page 4

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2-3. MECHANISM DECK

2-4. BELT, CAPSTAN/REEL MOTOR (M601)

Mechanism deck

Cabinet (center) sub ASSY

Claws

Belt

Stopper

Claw

Capstan/reel motor

(M601)

wheel ASSY (P), capstan
(FX467/FX467ST)

wheel ASSY (P), capstan

Belt

• How to apply the belt

Capstan/reel motor
(M601)

Screws (M1.4)

Mechanism deck

www. xiaoyu163. com

QQ 376315150

TEL 13942296513

TEL 13942296513 QQ 376315150 892498299

http://www.xiaoyu163.com

Summary of Contents for MW-FX277

Page 1: ...pprox 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 playback 25 7 5 Radio reception 40 14 Measured value by the standard of EIAJ Electronic Industries Association of Japan Us...

Page 2: ...o 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 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 sectio...

Page 3: ...l 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 Red Cabinet center sub ASSY Head flexible board 2 Remove solder 3 Claws 4 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 37631...

Page 4: ... ASSY P capstan FX467 FX467ST wheel ASSY P capstan Belt How to apply the belt Capstan reel motor M601 3 Screws M1 4 Mechanism deck www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 http www xiaoyu163 com http www xiaoyu163 com ...

Page 5: ...ub ASSY 1 2 4 3 1 Insert the spring torsion to the L shape slot as shown in the figure 2 3 Insert the hinge of the Cassette holder 4 Close the Cassette holder then press it 2 5 CASSETTE HOLDER z CAUTIONS DURING ASSEMBLY www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 89249829...

Page 6: ...75V set test tape WS 48A 3kHz 0dB frequency counter 32 Ω phones jack J301 3 1 MECHANICAL ADJUSTMENTS PRECAUTION 1 Clean the following parts with a denatured alcohol moistened swab playback head pinch roller capstan rubber belt 2 Demagnetize the playback head with a head demagnetizer Do not use a magnetized screwdriver for the adjustments 3 These measurement and adjustment should be performed with ...

Page 7: ...stment Location Main board See page 8 0 dB 1µ V Repeat the procedures in each adjustment several times and the 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 Ω phones jack J301 level meter R205 R105 C1 C35 C31...

Page 8: ... TV IN 0 01µF MAIN BOARD 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 31 35 30 21 25 20 11 15 1 5 10 frequency counter 33K Ω 1 F IC1 7 pin IC1 0 pin µ MAIN BOARD Side A w...

Page 9: ... ON O Radio ON signal output 26 MEGA BASS O MEGA BASS ON signal output 27 MUTE O Mute ON signal output 28 TAPE I Tape ON input 29 PRE CTL O Preamplifier control output 30 MOTOR CTL O Motor control output 31 ID I Destination select input 32 44 S1 13 O LCD segment output 45 48 COM1 4 O LCD common output 49 52 DBR1 4 LCD power supply 53 RESET I Reset input Fixed H 54 TU VCC Not used OPEN 55 VDD Power...

Page 10: ...30 32 33 35 40 45 48 49 50 55 60 64 R711 R712 R713 R714 R715 R716 IC701 C701 R704 R705 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 R13 R14 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 R9 R15 D2 D4...

Page 11: ...put impedance 10 MΩ Voltage variations may be noted due to normal produc tion tolerances Waveforms are taken with a oscilloscope Voltage variations may be noted due to normal produc tion tolerances Circled numbers refer to waveforms Signal path F FM TV E PB r Waveforms 1 IC702 1 XOUT 2 3 VOLT DIV 0 1 V AC TIME DIV 5 µsec Q401 C Q401 B VOLT DIV 0 5 V AC TIME DIV 0 1 µsec VOLT DIV 10mV AC TIME DIV 0...

Page 12: ...d packing materials are given in the last of this parts list Ref No Part No Description Remark Ref No Part No Description Remark 5 1 CABINET SECTION 1 3 044 867 01 CABINET FRONT FX467 FX467ST 1 3 044 867 11 CABINET FRONT FX277 2 3 044 868 01 WINDOW LCD FX467 FX467ST 2 3 044 868 11 WINDOW LCD SLIVER FX277 2 3 044 868 21 WINDOW LCD BLUE FX277 3 3 044 869 01 KNOB HOLD 4 3 044 870 01 BUTTON PRESET 4 3...

Page 13: ...ER D SELECTION FX467 FX467ST 113 X 3376 169 1 CLUTCH ASSY 114 3 920 990 01 SPRING UD COMPRESSION 115 3 921 335 01 WASHER LEVER 116 3 923 530 01 SLEEVE M 117 3 728 091 01 WASHER STOPPER 118 3 921 052 11 LEVER A DETECTION FX467 FX467ST 119 3 920 994 11 SPRING D SELECTION FX467 FX467ST 120 3 929 419 01 LEVER BR DETECTION FX467 FX467ST 121 3 703 816 31 SCREW M1 4 SPECIAL HEAD 122 3 921 023 01 LEVER M ...

Page 14: ...CERAMIC CHIP 1000PF 5 25V C101 1 162 962 11 CERAMIC CHIP 470PF 10 50V C102 1 162 962 11 CERAMIC CHIP 470PF 10 50V FX467 C103 1 162 968 11 CERAMIC CHIP 0 0047uF 10 50V C104 1 126 153 11 ELECT 22uF 20 6 3V C105 1 115 156 11 CERAMIC CHIP 1uF 10V C106 1 162 964 11 CERAMIC CHIP 0 001uF 10 50V C107 1 115 156 11 CERAMIC CHIP 1uF 10V C108 1 162 964 11 CERAMIC CHIP 0 001uF 10 50V C201 1 162 962 11 CERAMIC ...

Page 15: ...216 813 11 METAL CHIP 220 5 1 16W R14 1 216 825 11 METAL CHIP 2 2K 5 1 16W R15 1 216 845 11 METAL CHIP 100K 5 1 16W R16 1 216 845 11 METAL CHIP 100K 5 1 16W R17 1 216 833 91 METAL CHIP 10K 5 1 16W R18 1 216 845 11 METAL CHIP 100K 5 1 16W R19 1 216 833 91 RES CHIP 10K 5 1 16W R20 1 216 821 11 METAL CHIP 1K 5 1 16W R101 1 216 835 11 METAL CHIP 15K 5 1 16W R102 1 216 835 11 METAL CHIP 15K 5 1 16W R10...

Page 16: ... SMALL TYPE TAPE ON S302 1 762 742 61 SWITCH DETECTION SMALL TYPE N R SW FX467 FX467ST S303 1 692 298 11 SWITCH SLIDE DX LOCAL METAL NORM S304 1 692 298 11 SWITCH SLIDE AVLS S701 1 572 922 11 SWITCH SLIDE HOLD TRANSFORMER T401 1 426 917 11 TRANSFORMER DC DC CONVERTER THERMISTOR TH601 1 803 751 21 THERMISTOR POSITIVE VIBRATOR X701 1 579 615 11 VIBRATOR CRYSTAL 75kHz MISCELLANEOUS 19 1 694 218 31 CO...

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