Sony Sports Walkman WM-FS473 Service Manual Download Page 6 | Manualshive

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3-5. MECHANISM DECK, MAIN BOARD, BELT REMOVAL

Main board

2

Screws (2x5)

7

6

4

9

8

Chassis

3

Claw

3

Claw

5

Screw

3

Claw

Belt

Mechanism deck

Red

Red

1

Remove

solder

Black

Orange

Gray

Black

White

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Summary of Contents for Sports Walkman WM-FS473

Page 1: ... AM 530 1710kHz US Canadian model 531 1602kHz AEP E model Power requirements 3V DC batteries AA R6 x2 Dimensions 104 2 x 127 3 x 51 8 mm 4 1 8 x 51 8 x 21 8 inches w h d incl projecting parts and controls Mass Approx 260g 9 2 oz Approx 340g 12 oz incl batteries and a cassette Supplied accessory Stereo headphones or Stereo earphones 1 Design and specifications are subject to change without notice R...

Page 2: ...VICE NOTE 3 3 DISASSEMBLY 3 1 Cover Removal 4 3 2 Display Board Removal 4 3 3 Cassette Lid Assy Removal 5 3 4 Chassis section Headphone Jack Board Removal 5 3 5 Mechanism Deck Main Board Belt Removal 6 4 ADJUSTMENTS 4 1 Mechanical Adjustments 7 4 2 Electrical Adjustments 7 5 DIAGRAMS 5 1 Explanation of IC Terminals 10 5 2 Block Diagram 11 5 3 Printed Wiring Boards Main Section 13 5 4 Schematic Dia...

Page 3: ...e are removed for repair treat them to protect from water drop following the instructions in the figure spread grease bond etc Sony grease SGL 601 7 651 000 10 Note Clean the attachement portion and shaded area with cloth Paking cabinet A A Cassette lid assy Screw Joint VOL B O ring Apply sony grease SGL 601 Knob VOL Cabinet rear assy ...

Page 4: ...ISPLAY BOARD REMOVAL rTheequipmentcanberemo vedusingthef ollowingpr ocedure Cassette lid assy 3 2 Screws 1 Flexible board Display board Cassette lid assy Arm assy Backle Cover 5 Screws 4 2 1 3 Claws Chassis section Headphone jack board Cover Set Diaplay board Cassette lid assy Mechanism deck Main board Belt ...

Page 5: ...jack board Chassis section Cabinet rear assy Cabinet rear assy Knob VOL RV301 Main board 2 Claws Cassette lid assy 2 Screw 2 Screw 3 1 Flexible board Note Wheninstallthec hassissection 1 TurnR V301full ytoarr owdirection 2 Turnknob V OL fullytoarr owdirection 3 FitRV301toholeofknob V OL andthen installthechassissection ...

Page 6: ... 6 3 5 MECHANISM DECK MAIN BOARD BELT REMOVAL Main board 2 Screws 2x5 7 6 4 9 8 Chassis 3 Claw 3 Claw 5 Screw 3 Claw Belt Mechanism deck Red Red 1 Remove solder Black Orange Gray Black White ...

Page 7: ...cy counter J101 phones 16 Ω 4 1 MECHANICAL ADJUSTMENTS PRECAUTION 1 Cleanthefollowingpartswithadenatured alcohol moistened swab playbackhead pinchroller capstan rubberbelt 2 Dema gnetiz ethepla ybac kheadwithaheaddema gnetiz er 3 Donotuseamagnetizedscrewdriverfortheadjustments 4 Aftertheadjustments applysuitablelockingcompoundtothe partsadjusted 5 Theadjustmentsshouldbeperformedwiththeratedpowersu...

Page 8: ...G ADJUSTMENT Adjust for a maximum reading on level meter L1 620kHz 621kHz CT1 1 400kHz 1 395kHz FM FREQUENCY COVERAGE ADJUSTMENT Adjust part Frequency display Reading on digital voltmeter L3 87 5MHz 3 7 3 9V Confirmation 108MHz less than 10V FM TRACKING ADJUSTMENT Adjust for a maximum reading on level meter L2 87 5MHz Confirmation 108MHz AM RF signal generator 30 amplitude modulation by 400Hz sign...

Page 9: ...racking Adjustment CT1 AM Tracking Adjustment L2 FM Tracking Adjustment T2 AM Frequency Coverage Adjustment L3 FM Frequency Coverage Adjustment T1 AM IF Alignment MAIN BOARD Conductor Side Connection Point MAIN BOARD Component side ...

Page 10: ...rminal H Mute ON 48 TEST I Test terminal Connected to ground 49 HOLD I Hold detection terminal 50 IF IN I IF input terminal 51 RADIO ON O Radio B ON OFF control 52 DO O PLL error signal output 53 GND Ground 54 FM IN I FM local oscillator input terminal 55 AM IN I AM local oscillator input terminal 56 VDD Power supply terminal 2 8V 57 RESET I System reset terminal L Reset 58 X OUT O Crystal oscilla...

Page 11: ... 11 12 WM FS473 5 2 BLOCK DIAGRAM Signal path F FM E PB ...

Page 12: ......

Page 13: ...taken with aVOM Input 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 E PB r WAVEFORMS 1 VOLT DIV 1V AC TIME DIV 0 1 µsec 2 VOLT DIV 0 5V AC TIME DIV 0 1 µsec 4 1Vp p 0 38µsec 2 8Vp p 0 38µsec r IC BLOC...

Page 14: ...oltage is dc 3 V and fed with regulated dc power supply from battery terminal Voltages and waveforms are dc with respect to ground under no signal detuned conditions Voltages and waveforms are dc with respect to ground in playback mode no mark FM RADIO SECTION PLAY TAPE SECTION AM Voltages are taken with a VOM Input impedance 10 MΩ Voltage variations may be noted due to normal produc tion toleranc...

Page 15: ......

Page 16: ...OARD PRESSURE WEL LCD701 1 803 131 11 DISPLAY PANEL LIQUID CRYSTAL 1 LCD701 not supplied CN702 1 2 3 4 5 6 7 8 8 9 11 12 12 16 13 14 15 15 3 4 5 Ref No Part No Description Remark Ref No Part No Description Remark 51 3 024 926 01 TERMINAL M BATTERY 52 3 934 023 01 JOINT VOL 53 1 669 891 11 FLEXIBLE BOARD 54 3 024 925 01 TERMINAL P BATTERY 55 A 3021 088 A MAIN BOARD COMPLETE US Canadian 55 A 3021 09...

Page 17: ...3 025 059 01 BELT 126 3 025 054 01 SPRING UPPER LOWER 127 3 905 712 01 SCREW CLUTCH 128 X 3375 990 1 CLUTCH ASSY 129 3 381 841 01 GEAR CAM 130 3 027 722 01 SPRING CLUTCH 131 3 025 056 01 FW F ASSY 132 3 025 057 01 FW R ASSY 133 3 381 883 01 SCREW MOTOR 134 3 025 073 01 SPRING 135 3 025 060 01 WASHER UPPER LOWER 136 3 905 710 01 ARM TU 137 3 025 053 01 LEVER WEDGE 139 3 025 050 01 GEAR IDLER B 140 ...

Page 18: ...5V C6 1 163 087 00 CERAMIC CHIP 4PF 50V C7 1 163 037 11 CERAMIC CHIP 0 022uF 10 25V C8 1 164 695 11 CERAMIC CHIP 0 0022uF 5 50V C9 1 163 087 00 CERAMIC CHIP 4PF 50V C10 1 163 249 11 CERAMIC CHIP 82PF 5 50V C11 1 163 099 00 CERAMIC CHIP 18PF 5 50V C12 1 163 133 00 CERAMIC CHIP 470PF 5 50V C13 1 163 037 11 CERAMIC CHIP 0 022uF 10 25V C14 1 163 009 11 CERAMIC CHIP 0 001uF 10 50V C15 1 164 004 11 CERA...

Page 19: ...R DTC114TUA T106 Q102 8 729 602 21 TRANSISTOR 2SC4154 F Q201 8 729 028 97 TRANSISTOR DTC114TUA T106 Q202 8 729 602 21 TRANSISTOR 2SC4154 F Q301 8 729 029 15 TRANSISTOR DTC144TUA T106 Q302 8 729 029 15 TRANSISTOR DTC144TUA T106 Q304 8 729 029 15 TRANSISTOR DTC144TUA T106 Q305 8 729 029 15 TRANSISTOR DTC144TUA T106 Q307 8 729 602 21 TRANSISTOR 2SC4154 F RESISTOR R1 1 216 853 11 METAL CHIP 470K 5 1 1...

Page 20: ... 830 11 FILTER CERAMIC DISCRIMINATOR 1 670 152 11 SWITCH BOARD SWITCH S901 1 771 395 11 SWITCH SLIDE FWD REV MISCELLANEOUS 53 1 669 891 11 FLEXIBLE BOARD 113 1 783 606 11 LEAD HEAD CN702 1 694 428 11 CONDUCTIVE BOARD PRESSURE WEL HP901 1 500 534 11 HEAD PLAYBACK L1 1 754 005 11 ANTENNA FERRITE ROD LCD701 1 803 131 11 DISPLAY PANEL LIQUID CRYSTAL M901 X 3375 573 1 MOTOR ASSY S101 1 692 302 11 SWITC...

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