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Sony Walkman WM-SR10, Service Manual

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Sony Walkman WM-SR10 Service Manual Download Page 3

3

WM-SR10

SECTION 1

SERVICE NOTE

In this set, record/play mode is detected using the switch S704 (TAPE POWER).
S704 is mounted on the MAIN board. If MAIN board is removed, it becomes impossible to detect
record/play mode.
Where MAIN board is removed, when you measure operation and voltage of each part of the mechanism
deck, please turn on S704.

– MAIN Board (SIDE A) —

S704

Summary of Contents for Walkman WM-SR10

Page 1: ...urces Dimensions Approx 112 0 82 5 37 5 mm 4 1 2 3 1 4 1 1 2 inches w h d excl projecting parts and controls Mass Approx 187 g 6 6 oz main unit only Supplied accessory Stereo headphones or Stereo earphones 1 Design and specifications are subject to change without notice Battery life approximate hours Sony alkaline LR6 SG Sony R6P SR using headphones earphones Tape playback 24 7 Radio reception 48 ...

Page 2: ...ightly longer time Soldering irons using a temperature regulator should be set to about 350 C Caution The printed pattern copper foil may peel away if the heated tip is applied for too long so be careful Strong viscosity Unleaded solder is more viscous sticky less prone to flow than ordinary solder so use caution not to let solder bridges occur such as on IC pins etc Usable with ordinary solder It...

Page 3: ... the switch S704 TAPE POWER S704 is mounted on the MAIN board If MAIN board is removed it becomes impossible to detect record play mode Where MAIN board is removed when you measure operation and voltage of each part of the mechanism deck please turn on S704 MAIN Board SIDE A S704 ...

Page 4: ... the main unit to show the direction to turn up the volume The button jack has a tactile dot NPLAY MFF CUE DC IN 3 V mREW REVIEW xSTOP SPEAKER i VOL TUNING i zREC RADIO OFF TAPE AM FM AVLS BATT indicator PAUSE MIC PLUG IN POWER SOUND BOOST ISS Built in microphone Battery compartment FM ST MONO LOCATION OF CONTROLS ...

Page 5: ...umerical order given 3 1 Front Cabinet Assy SET CASSETTE HOLDER SUB ASSY FRONT CABINET ASSY MAIN BOARD MECHANISM DECK MT WMGX221 175 BELT CAP M601 HRP901 HE901 3 three claws 5 two claws 4 claw 6 flexible flat cable CN701 8 front cabinet assy 1 two screws TP 1 7 3 7 2 two screws M1 4 EG 7 Remove soldering from the two points RED WHT ...

Page 6: ...screw TP B1 7 4 2 three screws IB LOCK 5 mechanism deck MT WMGX221 175 1 screw TP B1 7 4 5 screw M1 4 3 2 plate connector L 4 Remove soldering from the four points 3 Remove soldering from the four points RED RED BLU GND WHT WHT BLK ORG 6 two screws TP B1 7 4 7 MAIN board 8 joint cover ...

Page 7: ...pstan reel motor 3 1 7 6 capstan fly assy AR washer 5 washer 4 9 qa 8 washer stopper N two screws HE901 erase head 0screw HRP901 REC PB head Attaching belt CAP belt CAP belt CAP z 3 5 Cassette Holder Sub Assy 4 spring torsion 2 boss 5 cassette holder sub assy 3 1 boss ...

Page 8: ...he following parts with a denatured alcohol moistened swab record playback erase head pinch roller rubber belts capstan 2 Demagnetize the record playback head with a head demagnet izer Do not bring a head demagnetizer close to the erase head 3 Do not use a magnetized screwdriver for the adjustments 4 The adjustments should be performed with the rated power supply voltage unless otherwise noted Tor...

Page 9: ...reading on level meter L3 86 0 MHz 87 35 MHz CT1 3 109 5 MHz 108 25 MHz EA MODEL Repeat the procedures in each adjustment several times AM TRACKING ADJUSTMENT Adjust for a maximum reading on level meter L1 621 kHz CT1 1 1 404 kHz MAIN Board SIDE B Adjustment Parts Location MAIN Board SIDE A FM TRACKING ADJUSTMENT Adjust for a maximum reading on level meter L2 86 0 MHz 87 35 MHz CT1 2 109 5 MHz 108...

Page 10: ...e taken with a VOM Input impedance 10 MΩ Voltage variations may be noted due to normal production toler ances Waveforms are taken with a oscilloscope Voltage variations may be noted due to normal production toler ances Circled numbers refer to waveforms Signal path F FM f AM E PB d REC N MIC INPUT Abbreviation 9E E model without the indication of the country of origin EA Saudi Arabia model Note on...

Page 11: ...MO ST TUN LED FM OSC 20 AM OSC L1 AM FERRITE BAR ANTENNA FM RF OUT AM RF IN L2 FM RF FM AM RF 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 CP1 ANT A D E C TU L TU R B 11 ST LED AGC TUN LED ST LE...

Page 12: ...1 VOL EQ EQ PB OUT R REC OUT R 9 3 EQ AMP POWER AMP POWER AMP POWER AMP MODE CONTROL CIRCUIT PB AMP REC AMP 11 12 PW SW REC SW R CH S301 1 4 S301 2 4 REC PB REC PB REC PB REC PB REC PB S301 4 4 REC PB S701 2 2 S701 1 2 REC PB S301 3 4 REC PB NORM LIMIT OFF ON OFF ON SOUND BOOST S303 AVLS S304 PAUSE S702 PRE OUT R FWDIN R REVIN R VREF VREF 7 11 12 13 EQ AMP VREF MIX 2 MIX 1 T551 BIAS OSC S551 ISS 3...

Page 13: ...0 11 12 13 Semiconductor Location Ref No Location D32 B 8 D33 D 3 D34 A 4 D35 A 8 D234 C 8 D301 A 4 D302 D 8 D401 A 6 D701 D 1 IC1 F 3 IC151 B 7 IC301 C 2 IC501 E 9 Q30 D 2 Q31 C 3 Q32 C 3 Q33 C 3 Q34 D 3 Q252 B 7 Q302 B 3 Q401 A 1 Q402 A 2 Ref No Location Q403 A 1 Q501 E 1 Q502 E 1 Q551 F 1 Q553 E 1 Q701 D 1 Q702 C 6 Q703 C 1 Q704 D 1 Q705 B 2 Q706 E 9 Q707 B 8 Q709 C 8 Q710 D 1 Q711 C 1 Q712 D 8...

Page 14: ...C10 MIC R MIC MONO REC VCC 47 10V B 22 4V A 47 10V B 2200p B 2200p B 1K FB FB 1K FB 1K SP MUTE 2F 2F TU GND TU VCC TU L TU R MONO STEREO DET OUT AM RF 4V EC 2F 0 47 B 0 047 B 0 1 F 0 1 B 0 1 B 0 01 B 1 F 1 F 1 F 0 1 F 0 1 F 0 47 F 470p B 2 2 F 6 PIN 6PIN MA111 MA111 MA111 0 DTA114TUA 2SA1162 YG TE85L DTC114YUA UN5114 TX XP1214 XP1215 XP4215 TX 2SB1679 UN5214 TX UN5215 TX 2SB1679 DTA114TUA Q718 DTA...

Page 15: ...R109 R107 R207 C307 S701 1 2 S702 R208 R108 R602 R260 R160 R606 C317 B TAPE SW 0 01 F 220 4V 470p B 1 F 22 10V B 1000p B 1000p B 0 1 F 22 10V B 4700p B 4700p B 22 4V A 22 4V A 0 1 B 1 F 1 F FB 1K FB 1K FB 1K 47k 100k 1k LB8115W NA TLM 0 1 F 1 F 1 F 0 01 F 0 47 B 1000p B UN5214 TX 10K 47K 2 2 F 1 F 100p CH 2200p B 2200p B 470p B 470p B 1 F 1 F 2SA1162 YG 2 2k 0 22 16V B 1k 470k 470p B GND 1000p B 4...

Page 16: ...OM RI VREF POWER OUT COM POWER OUT R VCC POWER MUTE POWER IN L POWER IN R MIX OUT L MIX OUT R LP 2 H PIN R H PIN L DET OUT M VREF IN VSP MIX IN R MIX IN L L B SW M GND R P REF SYSTEM POWER OUT L POWER GND M VCC DR WOUT MPGND VOUT UOUT FC OUT OSC UB VB WB 3 4 5 6 7 8 9 10 11 12 PRE NF L PRE OUT R PRE NF R FWDIN R REVIN R REVIN L FWDIN L S S PRE GND PRE OUT L BIAS R F REF SYS CONT DET VREF SPEED LOW...

Page 17: ...7X4 TAPPING 8 3 237 135 01 GEAR A 9 A 3178 901 A MAIN BOARD COMPLETE EXCEPT EA 9 A 3178 905 A MAIN BOARD COMPLETE EA 10 3 375 114 81 SCREW 11 3 234 569 01 BUTTON FF 12 3 234 570 01 BUTTON REW 13 3 234 568 01 BUTTON PLAY 14 3 235 589 01 BUTTON STOP 15 3 235 588 01 BUTTON REC 16 3 245 464 01 PLATE CONNECTOR R 17 3 242 657 01 CUSHION 18 3 245 463 01 PLATE CONNECTOR L 19 3 242 657 11 CUSHION 20 3 237 ...

Page 18: ...CUSHION MIC 58 1 823 821 11 WIRE MIC WHT 59 1 823 821 21 WIRE MIC BLK 60 3 318 382 41 SCREW 1 7X3 7 TAPPING 61 1 824 629 21 CABLE FLEXIBLE FLAT 6P 62 3 248 626 01 SCREW TAPPING B2 0 63 1 823 820 11 WIRE SPEAKER 64 3 237 125 01 LID BATTERY CASE 65 3 244 964 01 KNOB SOUND 66 3 244 959 01 CABINET FRONT 67 3 237 129 01 KNOB SP HP 68 3 022 581 01 PLATE LIGHT GUIDE MIC501 1 542 481 11 MICROPHONE ELECTRE...

Page 19: ... 01 WASHER 107 3 029 275 01 WASHER STOPPER N 108 3 703 816 73 SCREW M1 4 SPECIAL HEAD 109 3 234 861 01 GUIDE ARO TAPE 111 3 703 816 23 SCREW M1 4X2 5 SPECIAL HEAD 112 X 3379 882 1 PINCH N ASSY ARM 113 3 703 925 21 SCREW M1 4 HE901 1 500 232 13 HEAD MAGNETIC ERASE HRP901 1 500 718 11 HEAD MAGNETIC RECORD PLAYBACK M601 1 763 772 11 MOTOR DC CAPSTAN REEL A Included in Ref No 151 HRP901 HE901 M601 112...

Page 20: ...OMPRESSION 154 3 019 778 01 SLEEVE MS 155 3 728 091 01 WASHER STOPPER 156 3 225 427 01 WASHER LEVER 157 3 225 384 01 GEAR A 159 3 225 395 01 LEVER REW ROTARY 160 X 3380 677 1 LEVER E DETECTION ASSY 161 3 229 064 01 WASHER STOPPER 162 3 225 393 01 LEVER SHUT OFF 164 3 321 813 71 WASHER COTTER POLYETHYLENE 165 X 3379 881 1 CLUTCH ASSY AR 166 3 315 384 31 WASHER STOPPER 169 3 225 388 01 GEAR D 170 3 ...

Page 21: ...CERAMIC CHIP 0 1uF 25V C30 1 165 128 11 CERAMIC CHIP 0 22uF 16V C32 1 162 964 11 CERAMIC CHIP 0 001uF 10 50V C33 1 164 676 11 CERAMIC CHIP 2200PF 5 00 16V C34 1 164 346 11 CERAMIC CHIP 1uF 16V C35 1 164 346 11 CERAMIC CHIP 1uF 16V C36 1 164 346 11 CERAMIC CHIP 1uF 16V C37 1 164 918 11 CERAMIC CHIP 100PF 5 00 16V C38 1 164 918 11 CERAMIC CHIP 100PF 5 00 16V C39 1 164 357 11 CERAMIC CHIP 0 001uF 5 0...

Page 22: ...107 826 11 CERAMIC CHIP 0 1uF 10 00 16V C604 1 107 826 11 CERAMIC CHIP 0 1uF 10 00 16V C605 1 107 826 11 CERAMIC CHIP 0 1uF 10 00 16V C606 1 115 467 11 CERAMIC CHIP 0 22uF 10 00 10V C607 1 125 838 11 CERAMIC CHIP 2 2uF 10 6 3V C701 1 162 974 11 CERAMIC CHIP 0 01uF 50V C703 1 162 974 11 CERAMIC CHIP 0 01uF 50V C705 1 164 346 11 CERAMIC CHIP 1uF 16V C706 1 164 346 11 CERAMIC CHIP 1uF 16V C707 1 164 ...

Page 23: ...7 11 METAL CHIP 1M 5 1 10W R101 1 216 833 11 METAL CHIP 10K 5 1 10W R103 1 216 837 11 METAL CHIP 22K 5 1 10W R104 1 216 833 11 METAL CHIP 10K 5 1 10W R105 1 216 857 11 METAL CHIP 1M 5 1 10W R106 1 216 821 11 METAL CHIP 1K 5 1 10W R107 1 216 809 11 METAL CHIP 100 5 1 10W R108 1 216 825 11 METAL CHIP 2 2K 5 1 10W R109 1 216 797 11 METAL CHIP 10 5 1 10W R110 1 216 821 11 METAL CHIP 1K 5 1 10W R112 1 ...

Page 24: ...10W R710 1 216 857 11 METAL CHIP 1M 5 1 10W R711 1 216 833 11 METAL CHIP 10K 5 1 10W R712 1 216 833 11 METAL CHIP 10K 5 1 10W R713 1 216 813 11 METAL CHIP 220 5 1 10W R716 1 216 833 11 METAL CHIP 10K 5 1 10W R717 1 216 864 11 METAL CHIP 0 5 1 10W R718 1 216 833 11 METAL CHIP 10K 5 1 10W R719 1 216 841 11 METAL CHIP 47K 5 1 10W R722 1 216 857 11 METAL CHIP 1M 5 1 10W R723 1 216 845 11 METAL CHIP 10...

Page 25: ...25 WM SR10 MEMO ...

Page 26: ...ion allows you to jump to the revised 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 2002 10 New 1 1 2003 05 Correction of Ref No 64 SPM 03008 ...

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