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Sony Walkman WM-GX670, Service Manual

The Sony Walkman WM-GX670 is a compact and versatile portable cassette player. With its sleek design and user-friendly interface, it guarantees high-quality audio playback on the go. Need help operating? Don't worry! Simply download the detailed Operating Instructions manual for free from 88.208.23.73:8080 to make the most of your Walkman experience.

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Ref. No.

Part No.

Description

Remarks

Ref. No.

Part No.

Description

Remarks

— 35 —

R309

1-216-841-11 METAL CHIP

47K

5%

1/16W

R310

1-216-845-11 METAL CHIP

100K

5%

1/16W

R311

1-216-841-11 METAL CHIP

47K

5%

1/16W

R312

1-216-845-11 METAL CHIP

100K

5%

1/16W

R313

1-218-899-11 RES,CHIP

150K

0.50%

1/16W

R501

1-216-831-11 METAL CHIP

6.8K

5%

1/16W

R502

1-216-831-11 METAL CHIP

6.8K

5%

1/16W

R503

1-216-835-11 METAL CHIP

15K

5%

1/16W

R504

1-216-789-11 METAL CHIP

2.2

5%

1/16W

R505

1-216-835-11 METAL CHIP

15K

5%

1/16W

R506

1-216-835-11 METAL CHIP

15K

5%

1/16W

R507

1-216-829-11 METAL CHIP

4.7K

5%

1/16W

R508

1-216-835-11 METAL CHIP

15K

5%

1/16W

R509

1-216-857-11 METAL CHIP

1M

5%

1/16W

(GX670: FR)

R509

1-216-863-11 RES,CHIP

3.3M

5%

1/16W

(EXCEPT GX670: FR)

R510

1-216-835-11 METAL CHIP

15K

5%

1/16W

R511

1-216-835-11 METAL CHIP

15K

5%

1/16W

R512

1-216-835-11 METAL CHIP

15K

5%

1/16W

R513

1-216-835-11 METAL CHIP

15K

5%

1/16W

R514

1-216-857-11 METAL CHIP

1M

5%

1/16W

(GX670: FR)

R514

1-216-863-11 RES,CHIP

3.3M

5%

1/16W

(EXCEPT GX670: FR)

R517

1-216-817-11 METAL CHIP

470

5%

1/16W

R518

1-216-817-11 METAL CHIP

470

5%

1/16W

R520

1-216-817-11 METAL CHIP

470

5%

1/16W

R521

1-216-859-11 RES,CHIP

1.5M

5%

1/16W

R522

1-216-839-11 METAL CHIP

33K

5%

1/16W

R523

1-216-839-11 METAL CHIP

33K

5%

1/16W

R524

1-216-817-11 METAL CHIP

470

5%

1/16W

R525

1-216-817-11 METAL CHIP

470

5%

1/16W

R526

1-216-845-11 METAL CHIP

100K

5%

1/16W

R527

1-216-845-11 METAL CHIP

100K

5%

1/16W

R601

1-216-837-11 METAL CHIP

22K

5%

1/16W

R602

1-216-809-11 METAL CHIP

100

5%

1/16W

R603

1-216-829-11 METAL CHIP

4.7K

5%

1/16W

R604

1-216-823-11 METAL CHIP

1.5K

5%

1/16W

R605

1-216-833-11 METAL CHIP

10K

5%

1/16W

R607

1-216-845-11 METAL CHIP

100K

5%

1/16W

R801

1-216-849-11 METAL CHIP

220K

5%

1/16W

R802

1-216-829-11 METAL CHIP

4.7K

5%

1/16W

R803

1-216-817-11 METAL CHIP

470

5%

1/16W

R804

1-216-799-11 METAL CHIP

15

5%

1/16W

R805

1-216-819-11 METAL CHIP

680

5%

1/16W

R806

1-216-819-11 METAL CHIP

680

5%

1/16W

R807

1-216-845-11 METAL CHIP

100K

5%

1/16W

< COMPOSITION CIRCUIT BLOCK >

RB1

1-233-811-21 RES, NETWORK 470K (3216)

(EXCEPT GX670: FR)

RB1

1-233-873-21 RES, NETWORK (CHIP TYPE) (3216)

(GX670: FR)

RB601

1-233-873-21 RES, NETWORK (CHIP TYPE) (3216)

< VARIABLE RESISTOR >

RV1

1-223-587-11 RES, ADJ, CARBON 22K

RV301

1-225-684-21 RES, VAR, CARBON 30K/30K (VOL 

∑

)

RV601

1-223-584-11 RES, ADJ, CARBON 2.2K

< SWITCH >

S1

1-771-475-21 SWITCH, SLIDE (REV-STOP-FWD)

S2

1-572-922-11 SWITCH, SLIDE (HOLD)

S3

1-771-053-21 SWITCH, KEY BOARD (

p

/RADIO OFF)

S4

1-771-053-21 SWITCH, KEY BOARD (FF/AMS/PRESET –)

S5

1-771-053-21 SWITCH, KEY BOARD (REW/AMS)

S6

1-771-053-21 SWITCH, KEY BOARD (MENU)

S7

1-771-053-21 SWITCH, KEY BOARD (SET)

S8

1-771-053-21 SWITCH, KEY BOARD (BAND)

S9

1-771-053-21 SWITCH, KEY BOARD (

9(

/REPEAT)

S10

1-771-053-21 SWITCH, KEY BOARD (ENTER)

S11

1-572-467-21 SWITCH, PUSH (1 KEY)(REC)

S501

1-692-605-51 SWITCH, SLIDE (ISS 1-2-3)

< TRANSFORMER >

T1

1-416-943-21 COIL (AM OSC)

T2

1-416-942-21 COIL (AM MIX)

T501

1-429-374-11 TRANSFORMER, BIAS OSCILLATION

T801

1-423-745-11 TRANSFORMER, DC-DC CONVERTER

< POSITIVE THERMISTOR >

THP601 1-810-794-11

THERMISTOR, POSITIVE

< VIBRATOR >

X1

1-767-357-11 FILTER, CERAMIC (10.7MHz)

X2

1-579-615-11 VIBRATOR, CRYSTAL (75 kHz)

************************************************************

MISCELLANEOUS

**************

17

1-672-579-11 FLEXIBLE (ATS) BOARD

S901

1-692-101-11 SWITCH, LEAF (TAPE/R TUNE)

S902

1-692-100-11 SWITCH, LEAF (ATS/F TUNE)

HP901

1-500-355-21 HEAD, MAGNETIC (REC/PB/ERASE)

M901

1-763-166-11 MOTOR (CAPSTAN/REEL) (WITH PULLEY)

PM901

1-454-674-31 SOLENOID, PLUNGER

************************************************************

MAIN

Summary of Contents for Walkman WM-GX670

Page 1: ...America 531 1 602kHz other countries Tape section Frequency response Dolby NR off Playback 40 15 000Hz Recording playback 100 8 000Hz Output Headphones 2 REMOTE jack Load impedance 8 300Ω Input Microphone MIC jack General Power requirements 1 5V Rechargeable battery One R6 size AA battery Dimensions w h d Approx 108 4 77 7 23 8 mm 43 8 31 8 15 16inches incl projecting parts and controls Mass Appro...

Page 2: ...CRITICAL TO SAFE OPERATION REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY TABLE OF CONTENTS 1 SERVICE NOTE 3 2 GENERAL 5 3 DISASSEMBLY 3 1 Case Block Assembly 6 3 2 Belt F2 7 3 3 Cassette Lid Assembly 7 3 4 Reel Ornament Assembly 8 3 5 Main Board 8 3 6 Motor F2 M901 9 3 7 Holder Assembly 9 3 8 Pinch Lever N R Assembly ...

Page 3: ... the PRE SET status 1 Check that the slider NR is in the center position S1 and the FWD REV switch is also in the center position When these switches are not in the center position set them to the PRE SET status as follows 2 Move the FWD REV switch S1 to the same position as the slider NR is set 3 The slider NR can be moved when the main power of the regulated power supply is turned OFF once then ...

Page 4: ...Gear REEL T side Gear NR FWD Left side REV Right side Idler Gear Idler Gear A S side Idler Gear A T side Insert Flywheel R Cam Gear Gear Y Insert Flywheel N Pulley Reverse Clutch Assy Motor Pulley Gear REEL T side Idler Gear A T side Insert Flywheel R Cam Gear Gear Y Gear FR FF Left side Insert Flywheel N Pulley Reverse Clutch Assy Motor Pulley Gear REEL S side Idler Gear A S side Insert Flywheel ...

Page 5: ...EAT button 4 FF AMS button 5 OPEN knob 6 Battery case 7 Display window 8 HOLD c knob 9 SET button º MENU button BAND PADIO ON button ENTER COUNTER RESET button REC button p RADIO OFF button VOL knob ISS 1 2 3 knob MIC PLUG IN POWER jack 1 FF PRESET button 2 p RADIO ON BAND OFF button 3 HOLD knob 4 REW PRESET button 5 VOL knob 1 HOLD button 2 DISPLAY window 3 MENU button 4 JOG lever 5 REC button 6 ...

Page 6: ...etic head HP901 3 1 CASE BLOCK ASSEMBLY 3 Screw M1 4 2 5 2 Two screws M1 4 2 5 1 Battery case Lid 5 Remove the case block assembly in the direction of the arrow 4 Two screws M1 4 2 5 knob HOLD Claw S11 S501 S2 Note When assembling the case block assembly align the knob HOLD with the position of S2 knob ISS Note When assembling the case block assembly align the knob ISS with the position of S501 kn...

Page 7: ...ELT F2 3 Belt F2 2 Terminal board Battery 1 Remove solder from the battery terminal board 3 3 CASSETTE LID ASSEMBLY 5 Cassette lid assembly 4 Shaft 3 Open the cassette lid 1 Screw M1 4 2 0 2 Two screws M1 4 2 0 ...

Page 8: ...ote Claw Claw 3 5 MAIN BOARD SLIDER 8 Remove soldeing two points from plunger solenoid 6 Screw B1 7 3 tapping 5 Screw B1 7 3 tapping 3 Screw B1 4 1 6 2 Screw M1 4 7 Screw M1 4 1 Head flexible board 4 Screw M1 4 9 Remove soldeing four points from motor When assembling the MAIN board align the slider with the position of S1 Note ...

Page 9: ... 4 2 Motor F2 M901 Toothed lock 3 7 HOLDER ASSEMBLY 4 Screw M1 4 2 Shaft 6 Shaft 1 Two screws M1 4 1 4 3 Lock lever B 9 Remove the holder assembly in the direction of the arrow 5 Lock lever S 8 Flexible board 7 Cassette bracket assembly ...

Page 10: ... assembly in the direction of the arrow Note Be careful of the claw 1 Remove the pinch lever R assembly in the direction of the arrow Note Be careful of the claw 3 9 MAGNETIC HEAD HP901 1 Two screws M1 4 7 2 2 Remove the magnetic head HP901 in the direction of the arrow ...

Page 11: ...gnetized screwdriver for the adjustments 4 After the adjustments apply suitable locking compound to the parts adjusted 5 The adjustments should be performed with the rated power supply voltage unless otherwise noted Torque Measurement Mode FWD FWD Back Tension REV REV Back Tension FF REW Torque Meter CQ 102C CQ 102C CQ 102RC CQ 102RC CQ 201B Meter Reading 15 to 25 g cm 0 21 to 0 34 oz inch Less th...

Page 12: ...Specification Value Frequency counter 18 900 19 100 Hz TUNER SECTION 0 01µF FM RF signal generator to ANT TP1 22 5kHz frequency deviation by 400Hz signal Output level as low as possible Put the lead wire antenna close to the set 30 amplitude modulation by 400Hz signal Output level as low as possible AM RF signal generator 16Ω set level meter 2 REMOTE jack J701 AM IF ADJUSTMENT Adjust for a maximum...

Page 13: ...WM GX670 GX674 SECTION 6 DIAGRAMS 13 14 15 6 1 BLOCK DIAGRAM ...

Page 14: ...02 B 9 D303 B 9 Ref No Location D801 D 4 D802 E 3 D803 D 3 D804 D 3 IC1 B 14 IC2 D 14 IC3 D 17 IC4 F 18 IC5 D 18 IC6 C 19 IC301 F 17 IC302 E 9 IC501 D 7 IC601 D 19 IC801 D 3 Q1 D 16 Q2 C 16 Q3 B 13 Q4 B 14 Q5 D 15 Q6 C 15 Q7 B 13 Q8 C 16 Q9 D 6 Q10 C 13 Q11 D 15 Q12 E 16 Q13 E 13 Ref No Location Q14 B 13 Q15 C 4 Q16 C 15 Q17 C 15 Q18 F 15 Q19 F 16 Q20 C 6 Q301 E 19 Q302 F 16 Q303 F 16 Ref No Locat...

Page 15: ...1 5V and fed with regulated dc power supply from battery terminal Voltages and waveforms are dc with respect to ground under no signal detuned conditions no mark FM AM STOP TAPE FM AM PLAY TAPE 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 ...

Page 16: ... dc power supply from battery terminal Voltages and waveforms are dc with respect to ground under no signal detuned conditions no mark REC PLAY REC TAPE PLAY TAPE 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 ...

Page 17: ...OMPARATOR MTL DRV IC301 TA2123F EL IC302 NJM2185AV TE2 IC601 MM1279XVBE VREF OSC VCC GND IF OUT IF REQ SP OUT 1 2 FM IF IN MIX 3 4 5 AM IF IN QUAD AGC 6 7 8 9 10 11 12 ROUT LOUT ST IND 13 14 15 MPX IN PILOT IN DET OUT IN SW AM RF IN 20 21 22 23 24 LPF 2A LPF 2B 18 19 LPF1 VCO 16 17 STOP PULSE OSC AGC MIX FM IF FM IF AM IF AM IF FM DET SWITCH AM DET DEVIDE DECODE PRE VCO 0 90 FM AM PILOT ST IND ø ø...

Page 18: ...UME R DATA IN HOLD SENS OSC CTL AMS IN PHOTO CTL PHOTO IN DDC1 CTL HOLD SW BATT DET KEY IN F R SW VCC AD REF CS M DATA I O M CLOCK BEEP MOTOR CTL Pin No 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 I O O I O O O O O O O O O O I I O O I O I I I O I Description MOTOR control terminal TAPE detect terminal L ON H OFF REC circuit control output Terminal for ...

Page 19: ...021 205 A MAIN BOARD COMPLETE EXCEPT GX670 FR 10 A 3021 224 A MAIN BOARD COMPLETE GX670 FR 11 3 893 942 11 SCREW 1 7 3 TAPPING B 12 3 366 892 01 SCREW M1 4 13 3 029 213 01 TERMINAL BOARD 14 3 029 210 01 TERMINAL BOARD MINUS 15 3 035 199 01 SHEET GR3 EXCEPT GX670 FR 17 1 672 579 11 FLEXIBLE ATS BOARD 18 3 704 197 03 SCREW M1 4 1 6 LOCKING EXCEPT GX670 FR 19 3 034 074 01 RETAINER FLEXIBLE 20 3 328 4...

Page 20: ...arks Ref No Part No Description Remarks 69 3 007 433 01 SHEET N REFLECTION 70 X 3376 291 1 CHASSIS ASSY F 71 3 010 274 02 TABLE REEL 72 3 010 954 01 SPRING BT COMPRESSION 73 3 029 282 01 GEAR Y 74 3 029 285 01 GEAR CAM 75 3 029 284 01 LEVER TRIGGER 76 3 029 281 01 GEAR IDLER B 77 3 010 273 02 GEAR REEL 78 3 029 273 01 GEAR FR 79 3 029 283 01 GEAR IDLER A 80 3 029 286 01 GEAR NR 81 3 029 288 01 PUL...

Page 21: ...164 315 11 CERAMIC CHIP 470PF 5 50V C26 1 162 919 11 CERAMIC CHIP 22PF 5 50V C27 1 165 176 11 CERAMIC CHIP 0 047uF 10 16V C28 1 162 923 11 CERAMIC CHIP 47PF 5 50V C29 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V C30 1 162 961 11 CERAMIC CHIP 330PF 10 50V C31 1 164 362 11 CERAMIC CHIP 470PF 5 50V C32 1 125 984 21 TANTAL CHIP 22uF 20 4V C33 1 115 156 11 CERAMIC CHIP 1uF 10V C34 1 115 156 11 CERAMIC CHIP ...

Page 22: ...IC CHIP 1uF 10V C524 1 115 156 11 CERAMIC CHIP 1uF 10V C525 1 125 984 21 TANTAL CHIP 22uF 20 4V C526 1 115 156 11 CERAMIC CHIP 1uF 10V C527 1 115 156 11 CERAMIC CHIP 1uF 10V C528 1 117 181 11 TANTAL CHIP 4 7uF 20 2 5V C529 1 117 181 11 TANTAL CHIP 4 7uF 20 2 5V C530 1 115 156 11 CERAMIC CHIP 1uF 10V EXCEPT GX670 FR C531 1 115 156 11 CERAMIC CHIP 1uF 10V EXCEPT GX670 FR C532 1 162 957 11 CERAMIC CH...

Page 23: ...SO Q5 8 729 231 96 TRANSISTOR 2SK880GR TE85L Q6 8 729 028 69 TRANSISTOR 2SC4655 BC TX Q7 8 729 037 89 TRANSISTOR 2SC4627J C TX SO Q8 8 729 037 64 TRANSISTOR UN9116J TX SO Q9 8 729 823 86 TRANSISTOR 2SA1745 Q10 8 729 037 89 TRANSISTOR 2SC4627J C TX SO Q11 8 729 037 63 TRANSISTOR UN9115J TX SO Q12 8 729 037 71 TRANSISTOR UN9210J TX SO Q13 8 729 037 71 TRANSISTOR UN9210J TX SO Q14 8 729 037 89 TRANSI...

Page 24: ...S CHIP 4 7K 0 50 1 16W R56 1 218 875 11 RES CHIP 15K 0 50 1 16W R57 1 218 875 11 RES CHIP 15K 0 50 1 16W R58 1 216 833 11 METAL CHIP 10K 5 1 16W R59 1 216 833 11 METAL CHIP 10K 5 1 16W R60 1 216 833 11 METAL CHIP 10K 5 1 16W R61 1 216 833 11 METAL CHIP 10K 5 1 16W R62 1 216 845 11 METAL CHIP 100K 5 1 16W R63 1 216 853 11 METAL CHIP 470K 5 1 16W R64 1 216 853 11 METAL CHIP 470K 5 1 16W R65 1 216 84...

Page 25: ...16W R605 1 216 833 11 METAL CHIP 10K 5 1 16W R607 1 216 845 11 METAL CHIP 100K 5 1 16W R801 1 216 849 11 METAL CHIP 220K 5 1 16W R802 1 216 829 11 METAL CHIP 4 7K 5 1 16W R803 1 216 817 11 METAL CHIP 470 5 1 16W R804 1 216 799 11 METAL CHIP 15 5 1 16W R805 1 216 819 11 METAL CHIP 680 5 1 16W R806 1 216 819 11 METAL CHIP 680 5 1 16W R807 1 216 845 11 METAL CHIP 100K 5 1 16W COMPOSITION CIRCUIT BLOC...

Page 26: ...E BATTERY 3 008 521 01 CASE BATTERY CHARGE 3 029 488 01 POUCH CARRYING The components identified by mark or dotted line with mark are critical for safety Replace only with part number specified 3 864 892 11 MANUAL INSTRUCTION ENGLISH FRENCH GX670 AEP FR UK AUS CH EA 3 864 892 21 MANUAL INSTRUCTION SPANISH PORTUGUESE GX670 AEP E GX674 E 3 864 892 31 MANUAL INSTRUCTION GERMAN ITALIAN GX670 AEP 3 864...

Page 27: ...WM GX670 GX674 MEMO ...

Page 28: ...ed 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 2000 08 Added Ref No 34 ORNAMAT REEL for service part 1 2 2002 01 Correction of Part No for IC4 SPM 00031 SPM 01041 ...

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