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WM-FX373/FX375

– 12 –

– 13 –

– 14 –

5-2.

PRINTED  WIRING  BOARD

• Semiconductor

Location

Ref. No. Location

D120

G-3

IC1

E-4

IC301

D-7

IC331

F-5

IC601

D-9

Q2

F-4

Q101

E-6

Q201

D-6

Q301

F-6

Q302

F-4

Note on Printed Wiring Board:

X

: parts extracted from the component side.

Y

: parts extracted from the conductor side.

f

: internal component.

b

: Pattern of the rear side.

b

: Pattern from the side which enables seeing.

• Abbreviation

CND

: Canadian model.

E

: Radio Section (ST/MONO)

5E, 6E : Radio Section (DX/LOCAL)

Ver 1.2

Summary of Contents for Walkman WM-FX373

Page 1: ...tteries R6 AA 2 External DC 3V power sources Dimensions 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 Mass Approx 170 g 6 0 oz Approx 250 g 8 9 oz incl batteries and a cassette Supplied accessories Stereo headphones or Stereo earphones 1 Belt clip 1 Design and specifications are subject to change without notice SPECIFICATIONS WM FX373 FX375 Photo WM FX373 Do...

Page 2: ...racted from instruction manual SERVICING NOTES 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 Flexible Circuit Board Repairing Keep the temperature of the soldering iron around 270 C dur ing repairing Do not touch the soldering iron on the same conductor of the circuit board within 3 times Be ...

Page 3: ...claw 3 Remove the cabinet rear ass y Release all claw B to K in alphabetical order 1 two screws B1 7 9 cabinet rear ass y I J K B C D E F G H 5 two claws 6 main board 2 Flexible board CN302 3 Flexible board CN301 4 toothed lock WH screw M1 4 1 Remove four solders of motor M901 MAIN BOARD CABINET REAR ASS Y DIAL POINTER SETTING BELT MOTOR M901 MAGNETIC HEAD HP901 MAIN BOARD CASSETTE HOLDER ASS Y NO...

Page 4: ...WMEX372 114 1 belt 3 motor M901 2 two special head screws M1 4 4 two screws M1 4 5 magnetic head HP901 BELT MOTOR M901 MAGNETIC HEAD HP901 2 Remove the mechanism deck MT WMEX372 114 to direction of the arrow A A 1 two claws ...

Page 5: ...ge plate 1 Insert a precision screw driver 1 4 mm flat blade vertically in to portion A to release the hinge plate 3 Cassette holder ass y 1 Attach the spring torsion as shown in the figure 2 Insert the spring torsion in the ditch to direction of the arrow A A Note Follow the assembly procedure in the numerical order given ...

Page 6: ...lby knob M B knob Note for installation Check that two switches are latched with dolby knob and M B knob when carrying out installation of the mega bass unit A 1 Turn the knob TUNE fully in the arrow direction 2 Mount the pointer as shown in the figure A fig A pointer guide rib DIAL POINTER SETTING Note Follow the assembly procedure in the numerical order given ...

Page 7: ...cm more than 0 69 oz inch Mode Torque meter Meter reading FWD CQ 403A more than 30g REV CQ 403R more than 0 41 oz PRECAUTION Supplied voltage 2 5 V DC Switch and control position NORM CrO2 METAL ST MONO switch NORM ST EXCEPT US Canadian 5E 6E model NORM CrO2 METAL DX LOCAL switch NORM DX US Canadian 5E 6E model VOLUME control maximum TONE CONTROL HIGH and LOW mechanical center AVLS switch NORM MEG...

Page 8: ... Setting FM AM TAPE RADIO OFF switch AM Repeat the procedure in each adjustment several times since L 4 1 affects CT1 4 1 and CT1 4 1 affects L 4 1 Both the frequency coverage and tracking adjustments should end with the final adjustment of the trimmer capacitors AM IF Adjustment AM Frequency Coverage Adjustment AEP E model Italian Saudi Arabia model East European model AM Tracking Adjustment Ital...

Page 9: ...cking Adjustment CT1 3 FM Frequency Coverage Adjustment CT1 4 AM Frequency Coverage Adjustment MAIN BOARD Side B L2 FM Tracking Adjustment L1 AM Tracking Adjustment T1 AM IF Adjustment L3 FM Frequency Coverage Adjustment L4 AM Frequency Coverage Adjustment MAIN BOARD Side A ...

Page 10: ...WM FX373 FX375 10 11 5 1 BLOCK DIAGRAM SECTION 5 DIAGRAMS Ver 1 2 ...

Page 11: ... F 4 Q101 E 6 Q201 D 6 Q301 F 6 Q302 F 4 Note on Printed Wiring Board X parts extracted from the component side Y parts extracted from the conductor side f internal component b Pattern of the rear side b Pattern from the side which enables seeing Abbreviation CND Canadian model E Radio Section ST MONO 5E 6E Radio Section DX LOCAL Ver 1 2 ...

Page 12: ...nation U B Line H adjustment for repair Power voltage is dc 3 V and fed with regulated dc power supply from external power voltage jack Voltages are dc with respect to ground under no signal detuned conditions no mark PB TAPE FM AM Voltages are taken with a VOM Input impedance 10 MΩ Voltage variations may be noted due to normal produc tion tolerances Signal path F FM f AM E PB TAPE Abbreviation CN...

Page 13: ... 19 20 IC Block Diagrams IC1 TA2111F EL IC331 NJM2185AV TE2 WM FX375 IC601 LB1979V TLM ...

Page 14: ...OLDER CASSETTE FX375 EA 5 3 022 590 21 HOLDER CASSETTE FX375 EE 5 3 022 590 31 HOLDER CASSETTE FX375 US 5E 6E 6 X 3375 844 1 KNOB ASSY DOLBY 7 3 019 857 01 KNOB ROTARY 8 X 3375 843 1 KNOB ASSY MEGABASS 51 3 022 592 01 CABINET REAR 52 3 019 859 01 BUTTON STOP x 53 3 019 861 01 BUTTON REW M 54 3 019 858 01 BUTTON PLAY N 55 3 019 860 01 BUTTON FF m 56 3 022 591 01 CABINET FRONT EXCEPT FX373 CND 5E FX...

Page 15: ...FR CP 113 3 921 053 01 LEVER D SELECTION 114 3 921 043 01 GEAR D 115 X 3369 752 1 CLUTCH ASSY 116 3 920 999 01 GEAR A 117 3 921 050 01 GEAR B 118 3 920 990 01 SPRING UD COMPRESSION 119 3 921 335 01 WASHER LEVER 120 3 923 530 01 SLEEVE M 121 3 728 091 01 WASHER STOPPER 122 3 921 052 01 LEVER A DETECTION 123 3 920 994 11 SPRING D SELECTION 124 3 929 419 01 LEVER BR DETECTION 125 3 938 628 01 SPRING ...

Page 16: ...HIP 27PF 5 50V IT EA C3 1 163 089 00 CERAMIC CHIP 6PF 50V EE C4 1 163 089 00 CERAMIC CHIP 6PF 50V US CND 5E 6E C4 1 163 091 00 CERAMIC CHIP 8PF 50V AEP E EE C4 1 164 275 91 CERAMIC CHIP 9PF 5 50V IT EA C5 1 162 937 11 CERAMIC CHIP 6PF 0 5PF 50V C6 1 162 964 11 CERAMIC CHIP 0 001uF 10 50V C7 1 165 128 11 CERAMIC CHIP 0 22uF 16V C8 1 164 156 11 CERAMIC CHIP 0 1uF 25V C9 1 115 156 11 CERAMIC CHIP 1uF...

Page 17: ...uF 10 16V C603 1 126 176 11 ELECT 220uF 20 10V C605 1 164 344 11 CERAMIC CHIP 0 068uF 10 25V C606 1 164 344 11 CERAMIC CHIP 0 068uF 10 25V C607 1 115 467 11 CERAMIC CHIP 0 22uF 10 10V C608 1 165 176 11 CERAMIC CHIP 0 047uF 10 16V C609 1 164 505 11 CERAMIC CHIP 2 2uF 16V C610 1 107 823 11 CERAMIC CHIP 0 47uF 10 16V C612 1 164 156 11 CERAMIC CHIP 0 1uF 25V FILTER CF1 1 527 870 00 FILTER CF2 1 767 73...

Page 18: ...18 11 METAL CHIP 560 5 1 16W FX373 R206 1 216 820 11 METAL CHIP 820 5 1 16W FX375 R207 1 216 789 11 METAL CHIP 2 2 5 1 16W CND R207 1 216 797 11 METAL CHIP 10 5 1 16W FX373 EXCEPT CND R207 1 216 795 11 RES CHIP 6 8 5 1 16W FX375 R209 1 216 850 11 METAL CHIP 270K 5 1 16W CND R209 1 216 846 11 METAL CHIP 120K 5 1 16W FX373 EXCEPT CND R209 1 216 844 11 METAL CHIP 82K 5 1 16W FX375 EXCEPT US R209 1 21...

Page 19: ...ANUAL INSTRUCTION FRENCH CND 3 861 489 31 MANUAL INSTRUCTION ENGLISH FRENCH GERMAN ITALIAN AEP EE IT 3 861 489 41 MANUAL INSTRUCTION SPANISH DUTCH SWEDISH PORTUGUESE AEP E 3 861 489 51 MANUAL INSTRUCTION POLISH CZECK GREEK TURKISH AEP 3 861 489 61 MANUAL INSTRUCTION RUSSIAN MAGYAR BULGALIAN EE 3 861 489 71 MANUAL INSTRUCTION ENGLISH CHINESE KOREAN E 3 861 489 81 MANUAL INSTRUCTION ENGLISH CHINESE ...

Page 20: ... 28 MEMO ...

Page 21: ...gram and a printed wiring board larger than the printed paper size they can be printed by specifying the range Acrobat Reader Version 4 0 or later 1 Display the page to be printed 2 From the File menu select Page Setup and set the paper size 3 From the Command bar select Graphic Select Tool Keep pressing T select 4 Dragging the cursor enclose the range on the page to be printed 5 From the File men...

Page 22: ...at the upper right on the revised page allows you to jump to the next revised page Ver Date Description of Revision 1 0 1998 02 New 1 1 1998 05 Addition of Chinese model Supplement 1 Addition of Tourist model WM FX373 Supplement 2 1 2 2004 03 Addition of DIAGRAMS Reflection of the contents of SUPPLEMENT 1 SUPPLEMENT 2 ...

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