Sony Walkman WM-PSY02 Service Manual Download Page 8

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– 8 –

[MAIN BOARD]
– Component Side –

Adjustment Location:

[MAIN BOARD]
– Conductor Side –

RV601 : Tape Speed Adjustment

L4 : AM Tuning Voltage Adjustment

L2 : FM Tracking Adjustment

IC301

IC401

L3 : FM Tuning Voltage Adjustment

CT1 : AM Tracking Adjustment

T1 : AM IF Adjustment

L1 :
AM Tracking Adjustment

IC1

IC601

LCD401

(VT)

(GND)

(FM RF IN)

Summary of Contents for Walkman WM-PSY02

Page 1: ...nts 3V DC batteries AA R6 2 External DC 3V power sources Dimensions 115 90 5 34 4mm 4 5 8 3 5 8 1 3 8 inches w h d incl projecting parts and controls Mass Approx 150g 5 3 oz Approx 230g 8 2 oz incl batteries and a tape Supplied accessories Stereo headphones or earphones 1 Bumper guard 1 Chain 1 Design and specifications are subject to change without notice Model Name Using Similar Mechanism WM FX2...

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 HOW TO CHANGE THE CERAMIC FILTERS This model is used two cerami...

Page 3: ...4 Belt Motor Capstan Reel M901 Playback head HP901 J I H G F E D C B N M L K Joint MB S306 Cabinet front ASSY Cassette holder A Cabinet front ASSY 1 Inserttheprecisionscrewdriver 1 4mmflat blade intotheslit at claw A and release the claw Note To avoid the damage to the cabinet wrap a point of screwdriverwithcloth 2 Remove the cabinet front ASSY Release all claw Bto Nin alphabeticalorder Note Onins...

Page 4: ...ws 1 Flexible board CN301 2 Remove the four solders A B 3 2 Center cabinet 5 Torsion spring 1 Open the cassette holder 4 Cassette holder 2 Insertaprecisionscrewdriver 1 4mmflat blade vertically in to portion Ato release the hinge plate 3 Portion B to release the hinge plate ...

Page 5: ...LAYBACK HEAD HP901 1 Insert the precision screwdriver 1 4 mm flat blade in the slit and relese two claws 2 Remove the mechanism deck MF WMFX251 114 in the direction of the arrow A A 2 Two screws M1 4 1 6 3 Motor capstan reel M901 4 Screws M1 4 5 Playback head HP901 1 Belt ...

Page 6: ...ement Precaution Supplied voltage 2 5 V Switch and control position TAPE switch NORM RADIO switch DX VOLUME CONTROL maximum AVLS switch NORM MEGA BASS switch OFF Test tape Type Signal Used for WS 48A 3 kHz 0 dB Tape Speed Adjustment TAPE SECTION Tape Speed Adjustment Procedure Playback WS 48A tape center part and adjust RV601 so that the frequency counter reading becomes 3 000 Hz Standard value 2 ...

Page 7: ...ustment Repeat the procedures in each adjustment several times and the tracking adjustment should be finally done by the trimmer ca pacitors AM IF ADJUSTMENT Adjust for a maximum reading on level meter T1 450 kHz AM TRACKING ADJUSTMENT Adjust for a maximum reading on level meter L1 BAR ANTENNA CT1 620 kHz 1 400 kHz 2 jack J301 16 Ω set level meter AC 0 5 5 V range AM RF Signal generator Put the le...

Page 8: ...OARD Conductor Side RV601 Tape Speed Adjustment L4 AM Tuning Voltage Adjustment L2 FM Tracking Adjustment IC301 IC401 L3 FM Tuning Voltage Adjustment CT1 AM Tracking Adjustment T1 AM IF Adjustment L1 AM Tracking Adjustment IC1 IC601 LCD401 VT GND FM RF IN ...

Page 9: ...11 CE I Power failure detection signal input terminal fixed at H 12 XOUT O System clock output terminal 75 kHz 13 XIN I System clock input terminal 75 kHz 14 VDD Power supply terminal 3V 15 GND Ground terminal 16 EO O PLL error signal output terminal 17 VREG Power supply terminal connected to the coupling capacitor 18 VCOFM I FM VCO input terminal 19 VCOAM I AM MW VCO input terminal 20 LCD8 O 21 L...

Page 10: ......

Page 11: ...d waveforms are dc with respect to ground under no signal detuned conditions no mark FM AM TAPE PLAYBACK Voltages are 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 f AM E TAPE PL...

Page 12: ...11 01 SPRING CASSETTE 4 3 007 012 01 SPRING TORSION 5 X 3377 279 1 HOLDER SUB ASSY CASSETTE BLUE 5 X 3377 280 1 HOLDER SUB ASSY CASSETTE PURPLE 6 3 019 484 01 JOINT MB 7 3 035 412 01 KNOB M B BLUE 7 3 035 412 11 KNOB M B PURPLE 8 3 035 413 01 BUTTON PRESET BLUE 8 3 035 413 11 BUTTON PRESET PURPLE 9 3 035 415 01 LID BATTERY CASE BLUE 9 3 035 415 11 LID BATTERY CASE PURPLE 5 3 2 7 6 8 1 4 9 Ref No P...

Page 13: ... CHIP 18PF 5 50V C35 1 163 003 11 CERAMIC CHIP 330PF 10 50V C36 1 115 156 11 CERAMIC CHIP 1uF 10V C40 1 162 966 11 CERAMIC CHIP 0 0022uF 10 50V C41 1 113 619 11 CERAMIC CHIP 0 47uF 10V C101 1 162 962 11 CERAMIC CHIP 470PF 10 50V C102 1 162 962 11 CERAMIC CHIP 470PF 10 50V C103 1 162 968 11 CERAMIC CHIP 0 0047uF 10 50V C104 1 126 157 11 ELECT 10uF 20 16V C105 1 115 156 11 CERAMIC CHIP 1uF 10V C107 ...

Page 14: ... 16W JR9 1 216 296 91 METAL CHIP 0 5 1 8W JR10 1 216 864 11 METAL CHIP 0 5 1 16W JR11 1 216 864 11 METAL CHIP 0 5 1 16W JR14 1 216 295 00 METAL CHIP 0 5 1 10W JR17 1 216 864 11 METAL CHIP 0 5 1 16W JR18 1 216 864 11 METAL CHIP 0 5 1 16W JR19 1 216 864 11 METAL CHIP 0 5 1 16W JR20 1 216 864 11 METAL CHIP 0 5 1 16W JR21 1 216 296 91 METAL CHIP 0 5 1 8W JR22 1 216 296 91 METAL CHIP 0 5 1 8W JR23 1 21...

Page 15: ...26 1 216 845 11 METAL CHIP 100K 5 1 16W R401 1 216 842 11 METAL CHIP 56K 5 1 16W R403 1 216 841 11 METAL CHIP 47K 5 1 16W R404 1 216 815 11 METAL CHIP 330 5 1 16W R405 1 216 805 11 METAL CHIP 47 5 1 16W R406 1 216 845 11 METAL CHIP 100K 5 1 16W R408 1 216 845 11 METAL CHIP 100K 5 1 16W R412 1 216 839 11 METAL CHIP 33K 5 1 16W R413 1 216 839 11 METAL CHIP 33K 5 1 16W R414 1 216 839 11 METAL CHIP 33...

Page 16: ... 28 9 926 987 11 Sony Corporation Personal A V Products Company 99D027022 1 Printed in Singapore 1999 4 Published by Quality Engineering Dept Shinagawa WM PSY02 ...

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