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Sony Walkman WM-EX660, Service Manual

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Sony Walkman WM-EX660 Service Manual Download Page 18

– 24 –

• IC Block Diagrams

IC301

TA2072AF

IC601

MM1279XVBE

Summary of Contents for Walkman WM-EX660

Page 1: ...sing Similar Mechanism WM EX650 EX652 EX654 Tape Transport Mechanism Type MT WMEX550 125 SPECIFICATIONS WM EX660 EX662 Dolby noise reduction manufactured under license from Dolby Laboratories Licensing Corporation DOLBY and the double D symbol a are trade marks of Dolby Laboratories Licensing Corporation ...

Page 2: ...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 SAFETY RELATED COMPONENT WARNING COMPONENTS IDENTIFIED BY MARK OR DOTTED LINE WITH MARK...

Page 3: ... Input a square wave to the TP35 PHOTO IN and TP23 GND See figure below 2 Press the S704 STOP for selecting STOP mode 3 Press the S705 PLAY Each time the switch is pressed the mode is changed over This set detects the rotation of GEAR PH using the PH701 photo reflector The PH701 is mounted on the MAIN board and there fore the GEAR cannot be detected with the MAIN board removed As a result the moto...

Page 4: ...ear TA gear TB gear S motor pulley gear REEL S side gear NR REV right side FWD left side gear REEL T side clutch ass y M gear TB gear REEL T side gear Y gear NR motor pulley pulley reverse clutch ass y M flywheel R ass y flywheel N ass y gear FR FF left side gear NR gear Y gear S flywheel N ass y flywheel R ass y pulley reverse clutch ass y M motor pulley gear REEL S side gear FR REW right side ...

Page 5: ... 5 SECTION 2 GENERAL This section is extracted from instruction manual ...

Page 6: ... 6 ...

Page 7: ... 7 ...

Page 8: ...embly procedure in the numerical order given CASSETTE LID ASS Y 3 Remove the cassette lid ass y to direction of the arrow A 2 screw 1 4 2 2 screw IB lock A 1 Open the cassette lid ass y CASSETTE LID ASS Y SET CASE N ASS Y REEL ORNAMENT MAIN BOARD NOTE FOR INSTALLATON BELT MOTOR M901 MAGNETIC HEAD HP901 ...

Page 9: ... 3 case N ass y 1 serrat IB locks 1 two serrat IB locks 1 two serrat IB locks 2 two claws 4 Remove the reel ornament to direction of the arrow B 2 Push to the direction of the arrow A remove the claw of knob OPEN 1 four claws 3 B A ...

Page 10: ...ard adjust the S702 and lever SW 1 Remove five solders of motor M901 and battery terminal board ass y 7 screw IB lock 8 main board 4 flexible board CN301 6 serrat IB lock 5 screw 2 screw 3 battery terminal board ass y 1 Remove two solders of plunger solenoid lever SW S702 ...

Page 11: ... 11 MOTOR M901 BELT 3 belt 2 battery terminal board 1 Remove the solder of battery terminal board 1 two screws IB lock 2 Remove the motor M901 to direction of the arrow ...

Page 12: ... 12 MAGNETIC HEAD HP901 1 pinch lever R ass y 1 pinch lever N ass y 2 screw IB lock 3 bracket ass y 6 magnetic head HP901 4 flexible board CN301 5 two screws M1 4 7 2 ...

Page 13: ...N 1 Specified voltage 1 3 V DC 2 Setting BL SKIP OFF SOUND MB GRV OFF AVLS OFF aNR OFF Note Refer to Using Other Functions on page 7 Test tape 1 Playback WS 48A tape center in the FWD state and adjust RV601 so that the frequency counter reading becomes 3000 10 Hz 2 Playback WS 48A tape center in the REV state Check that the frequency counter reading is within 2 5 of the reading of step 1 Adjustmen...

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Page 17: ...kHz 3 IC704 XT 200 mV DIV 10 µs DIV 4 IC704 º VCP 500 mV DIV 500 µs DIV 0 7 Vp p 32 768 kHz 1 5 Vp p 980 µs 5 Q504 Base 200 mV DIV 500 µs DIV 6 Q504 Collector 200 mV DIV 500 µs DIV 0 6 Vp p 980 µs 1 3 Vp p 980 µs 7 Q502 1 Collector 200 mV DIV 500 µs DIV 8 IC601 5 OSC 10 mV DIV 1 ms DIV 1 3Vp p 980 µs 21 mVp p 1 6 ms ...

Page 18: ... 24 IC Block Diagrams IC301 TA2072AF IC601 MM1279XVBE ...

Page 19: ... to crystal oscillator X701 32 768 kHz for the system clock 16 XT Connected to crystal oscillator X701 32 768 kHz for the system clock 17 VDD Power supply terminal 1 5V 18 VSS1 Ground terminal 19 VCM 20 VCP 21 VSS2 22 VEE 23 SET STOP1 I Battery voltage detect input terminal Middle point voltage 0 75V input in this set 24 SET STOP2 I Battery voltage detect input terminal 25 KEY IN I Key input termi...

Page 20: ...t to the TA2072AF IC301 41 MB GRV CTL O MEGA BASS GROOVE selection signal output to the TA2072AF IC301 42 LOAD CTL O Load control signal output terminal 43 AVLS CTL O AVLS Automatic Volume Limiter System on off control signal output to the TA2072AF IC301 44 AMP CTL O Amp on off control signal output to the TA2072AF IC301 ...

Page 21: ...1 CASE ASSY 660CE S SILVER EX660 1 X 3374 635 1 CASE ASSY 662CE B BLACK EX662 AEP UK 9E French 1 X 3374 636 1 CASE ASSY 662CE S SILVER EX662 AEP UK French 1 X 3374 637 1 CASE ASSY 662CE L BLUE EX662 AEP UK 1 X 3374 638 1 CASE ASSY 662 B BLACK EX662 E Saudi Arabia Korean 1 X 3375 260 1 CASE ASSY 660CE L SILVER EX660 2 3 010 838 24 LOCK SERRAT IB 3 3 704 197 01 SCREW IB LOCK 4 X 3374 439 2 HOLDER AS...

Page 22: ...BATTERY 59 3 928 465 01 DETENT CASSETTE Ref No Part No Description Remark Ref No Part No Description Remark 60 3 012 423 01 COVER GX MD EX662 E 9E Saudi Arabia Korean 60 3 012 423 11 COVER GX MD EX660 EX662 AEP UK French 61 X 3372 850 1 PINCH LEVER N ASSY 62 3 704 413 31 SCREW M1 4X7 2 63 X 3372 849 1 PINCH LEVER R ASSY 64 X 3374 438 1 BRACKET ASSY 65 3 009 667 01 SPRING TENSION 66 3 011 277 01 CO...

Page 23: ... 3 007 439 01 SLIDER LOCK 115 3 007 436 01 SPRING TRIGGER TORSION 116 X 3372 848 1 CLUTCH ASSY M 117 3 932 724 21 WASHER 118 3 386 694 11 WASHER 119 X 3374 751 1 FLYWHEEL N ASSY 120 3 007 430 01 BELT 121 3 007 428 01 WASHER R 122 X 3374 750 1 FLYWHEEL R ASSY 123 3 007 434 01 PULLEY REVERSE 124 3 007 427 01 SCREW IB LOCK 125 X 3372 853 1 LEVER FRG ASSY 126 3 007 435 01 GEAR FR 127 3 007 432 01 SHEE...

Page 24: ... C209 1 164 174 11 CERAMIC CHIP 0 0082uF 10 25V C210 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V C211 1 107 823 11 CERAMIC CHIP 0 47uF 10 16V C212 1 115 156 11 CERAMIC CHIP 1uF 10V C213 1 115 156 11 CERAMIC CHIP 1uF 10V C214 1 162 964 11 CERAMIC CHIP 0 001uF 10 50V C215 1 162 970 11 CERAMIC CHIP 0 01uF 10 25V C216 1 115 156 11 CERAMIC CHIP 1uF 10V C217 1 115 156 11 CERAMIC CHIP 1uF 10V C220 1 162 953 ...

Page 25: ... 030 53 TRANSISTOR MSD1819A RT1 Q710 8 729 421 26 TRANSISTOR UN5216 Q711 8 729 230 72 TRANSISTOR 2SA1362YG Q712 8 729 422 51 TRANSISTOR UN5110 QRS RESISTOR R101 1 216 812 11 METAL CHIP 180 5 1 16W R102 1 216 847 11 METAL CHIP 150K 5 1 16W R103 1 216 831 11 METAL CHIP 6 8K 5 1 16W R104 1 216 824 11 METAL CHIP 1 8K 5 1 16W R105 1 216 825 11 METAL CHIP 2 2K 5 1 16W R108 1 218 270 11 RES CHIP 1 1K 160...

Page 26: ...708 1 692 453 11 SWITCH KEY BOARD FUNCTION THERMISTOR POSITIVE THP601 1 810 794 11 THERMISTOR POSITIVE VIBRATOR X701 1 760 872 11 VIBRATOR CRYSTAL 32 768kHz MISCELLANEOUS HP901 1 500 420 11 HEAD MAGNETIC PLAYBACK M901 1 698 885 21 MOTOR CAPSTAN REEL PM901 1 454 674 31 SOLENOID PLUNGER S901 1 762 793 22 SWITCH LEAF ATS MAIN ACCESSORIES PACKING MATERIALS 1 475 181 11 REMOTE CONTROL UNIT RM WME654 EX...

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