Sony Walkman WM-SR1 Service Manual Download Page 1

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SERVICE MANUAL

Ver. 1.1 2005.07

RADIO CASSETTE-CORDER

US Model

Canadian Model

E Model

Chinese Model

Model Name Using Similar Mechanism

WM-FX171

Tape Transport Mechanism Type

MF-WMSR1-114

SPECIFICATIONS

WM-SR1

9-926-921-12

2005G05-1
© 2005.07

Sony Corporation

Personal Audio Group
Published by Sony Engineering Corporation

Summary of Contents for Walkman WM-SR1

Page 1: ...del Canadian Model E Model Chinese Model Model Name Using Similar Mechanism WM FX171 Tape Transport Mechanism Type MF WMSR1 114 SPECIFICATIONS WM SR1 9 926 921 12 2005G05 1 2005 07 Sony Corporation Personal Audio Group Published by Sony Engineering Corporation ...

Page 2: ...pacitor may be dam aged by heat SECTION 1 SERVICING NOTES In this set the S301 TAPE POWER switch detects REC PLAY BACK on It is mounted on the MAIN board and therefore the REC PLAY BACK on cannot be detected with the MAIN board removed When making an operation check and voltage check of mechani cal deck with the MAIN board removed fix the S301 at turn on S301 MAIN BOARD Component Side Flexible Cir...

Page 3: ... ceramic filters in order to meet same specifications Therefore the ceramic filter must changed two pieces together since it s supply two pieces in one package as a spare parts Model Indication of S2 Indication of country origin Indication of service manual US FM SENS MADE IN MALAYSIA US Canadian FM SENS MADE IN MALAYSIA CND or Canadian E FM MODE MADE IN MALAYSIA E Saudi Arabia FM MODE MADE IN MAL...

Page 4: ... 4 SECTION 2 GENERAL This section is extracted from instruction manual LOCATION OF PARTS AND CONTROLS 1 FM MODE E Saudi Arabia 9E Chinese Models FM SENS US Canadian 5E Models ...

Page 5: ...Cassette Belt Motor M901 Head Magnetic HRP901 Set On installation cabinet rear assy adjust the S2 S305 S307 S308 S310 and knob AVLS knob PAUSE STOP 1 two screws B1 7 9 L K J I B C D E F G H cabinet rear assy 3 Remove the cabinet rear assy Release all claws from B to L in alphabetical order A 2 Insert the precision screw driver 1 4 mm flat blade into the slit at claw A and release the claw Note App...

Page 6: ...ure in the numerical order given 3 connector CN302 4 screw M1 4 1 Remove four solders of motor M901 5 two claws 2 flexible board CN301 6 main board 1 Turn the tuning knob fully in the arrow direction 2 Mount the pointer as shown in the figure A pointer guide rib fig A ...

Page 7: ...114 BELT MOTOR M901 HEAD MAGNETIC HRP901 2 Remove the mechanism deck MF WMSR1 114 to direction of the arrow A 1 two claws A 1 belt 3 motor M901 2 two special head screws M1 4 4 two special head screws M1 4 5 head magnetic HRP901 ...

Page 8: ... 2 Portion B to release the hinge plate 4 spring torsion B 3 holder sub assy cassette A 1 Insert a precision screw driver 1 4 mm flat blade vertically into portion A to release the hingeplate 3 holder sub assy cassette 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 ...

Page 9: ...Tape Speed Adjustment Frequency counter 2 985 Hz to 3 015 Hz TUNER SECTION 0 dB 1 µV FM Setting function switch FM AM Setting function switch AM Repeat the procedures in each adjustment several times and the frequency coverage and tracking adjustments should be finally done by the trimmer capacitors Adjustment Location FM FREQUENCY COVERAGE ADJUSTMENT Adjust for a maximum reading on level meter US...

Page 10: ...AMP FM AM MIX AMP FM AM OSC FM AM IF AMP DET MPX IC1 CT1 2 CV1 2 CV1 TUNING CT1 1 CV1 1 L3 FM OSC CT1 3 CV1 3 L4 AM OSC CT1 4 CV1 4 CT1 3 L3 FM FREQUENCY COVERAGE CT1 4 L4 AM FREQUENCY COVERAGE CT1 1 L1 AM TRACKING CT1 2 L2 FM TRACKING T1 AM IF B P F FL1 FM AM BAND SELECT SWITCH Q33 34 FM B D33 D70 ANT A TUNER MUTE C Page 13 TUNER L R B Page 13 Page 14 SIGNAL PATH FM AM 05 11 ST LED AGC TUN LED ST...

Page 11: ...H Q341 343 TUNER ON SWITCH Q303 TAPE ON SWITCH Q304 B SWITCH Q333 334 REC MUTE SWITCH Q359 PB MUTE SWITCH Q360 MIX AMP Q231 B SWITCH Q609 START STOP CONTROL SWITCH Q610 START MUTE SWITCH Q606 REC BIAS OSC Q351 PRE MUTE SWITCH Q310 MUTING CONTROL SWITCH Q311 SPEAKER HEADPHONE SWITCHING Q356 357 TAPE EQ SWITCH Q101 201 NF DET DET CONTROL M B ON OFF 14 LOW BOOST J303 MIC RV301 VOLUME MUTING Q141 MUTI...

Page 12: ... 4 Q334 F 2 Q341 D 6 Q343 D 5 Q356 E 4 Q357 F 4 Q359 H 4 Q360 H 4 Q601 H 5 Q603 H 5 Q604 H 5 Q606 H 6 Q607 H 5 Q608 G 5 Q609 G 6 Q610 G 6 Note on Printed Wiring Board X parts extracted from the component side Y parts extracted from the conductor side Through hole internal component b Pattern from the side which enables seeing The other layers patterns are not indicated Caution Pattern face side Pa...

Page 13: ...ith respect to ground under no signal detuned conditions no mark FM AM TAPE PLAY TAPE REC Voltages are taken with a VOM 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 PLAY d TAPE REC ...

Page 14: ...SR1 114 Ref No Part No Description Remark Ref No Part No Description Remark 51 3 703 816 04 SCREW M1 4 SPECIAL HEAD 52 3 704 197 71 SCREW M1 4X4 5 LOCKING 53 X 3378 976 1 LEVER NL ASSY PINCH 55 3 921 797 01 WASHER 56 X 3376 931 1 CHASSIS COMP ASSY GL 02 REC 57 3 938 613 12 LEVER OW DETECTION 58 3 920 990 21 SPRING UD COMPRESSION 59 3 921 335 03 WASHER LEVER AM RF IN FM RF OUT FM RF IN RF GND AM LO...

Page 15: ...0 4V C30 1 164 506 11 CERAMIC CHIP 4 7uF 16V C31 1 164 506 11 CERAMIC CHIP 4 7uF 16V C32 1 135 149 21 TANTALUM CHIP 2 2uF 20 10V C52 1 163 037 11 CERAMIC CHIP 0 022uF 10 25V C53 1 163 037 11 CERAMIC CHIP 0 022uF 10 25V C55 1 163 037 11 CERAMIC CHIP 0 022uF 10 25V C70 1 162 964 11 CERAMIC CHIP 0 001uF 10 50V US Canadian 5E C71 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V US Canadian 5E C100 1 124 635 00...

Page 16: ...P 1uF 16V C349 1 162 953 11 CERAMIC CHIP 100PF 5 50V C350 1 135 151 21 TANTALUM CHIP 4 7uF 20 4V C351 1 104 908 11 TANTAL CHIP 47uF 20 4V C352 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V C353 1 162 968 11 CERAMIC CHIP 0 0047uF 10 50V C354 1 163 145 00 CERAMIC CHIP 0 0015uF 5 50V C355 1 162 957 11 CERAMIC CHIP 220PF 5 50V C356 1 162 961 11 CERAMIC CHIP 330PF 10 50V C357 1 162 957 11 CERAMIC CHIP 220PF ...

Page 17: ...214 Q333 8 729 141 48 TRANSISTOR 2SB624 BV345 Q334 8 729 028 99 TRANSISTOR DTC114YUA T106 Q341 8 729 028 76 TRANSISTOR DTA114YUA T106 Q343 8 729 230 49 TRANSISTOR 2SC2712 YG Q351 8 729 141 75 TRANSISTOR 2SD596DV345 Q356 8 729 028 76 TRANSISTOR DTA114YUA T106 Q357 8 729 028 99 TRANSISTOR DTC114YUA T106 Q359 8 729 028 76 TRANSISTOR DTA114YUA T106 Q360 8 729 028 76 TRANSISTOR DTA114YUA T106 Q601 8 72...

Page 18: ...2 1 216 845 11 METAL CHIP 100K 5 1 16W R403 1 216 825 11 METAL CHIP 2 2K 5 1 16W R404 1 216 853 11 METAL CHIP 470K 5 1 16W R405 1 216 825 11 METAL CHIP 2 2K 5 1 16W R406 1 216 821 11 METAL CHIP 1K 5 1 16W R407 1 216 829 11 METAL CHIP 4 7K 5 1 16W R408 1 216 841 11 METAL CHIP 47K 5 1 16W R409 1 216 841 11 METAL CHIP 47K 5 1 16W R601 1 216 857 11 METAL CHIP 1M 5 1 16W R602 1 216 857 11 METAL CHIP 1M...

Page 19: ...TE 3 020 998 01 CLIP BELT 3 864 898 12 MANUAL INSTRUCTION ENGLISH CHINESE KOREAN US E 3 864 898 22 MANUAL INSTRUCTION ENGLISH FRENCH SPANISH PORTUGUESE Canadian 5E 3 864 898 32 MANUAL INSTRUCTION ENGLISH CHINESE RUSSIAN ARABIC Saudi Arabia Chinese 3 864 898 42 MANUAL INSTRUCTION ENGLISH CHINESE KOREAN 9E 8 953 130 90 HEADPHONE MDR E805LP K SET EXCEPT US Canadian X 3372 917 1 STAND ASSY MICROPHONE ...

Page 20: ...ised page Also clicking the version at the upper right on the revised page allows you to jump to the next revised page Ver Date Description of Revision 1 0 1999 01 New 1 1 2005 07 Change of Part for Ref No 53 on EXPLODED VIEWS Deleted of Ref No 54 on EXPLODED VIEWS ECN WMA01448 ...

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