Sony TCM-8EV Service Manual Download Page 4 | Manualshive

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Summary of Contents for TCM-8EV

Page 1: ...ew Super 2 5 2 5 4 8 cm sec 1 ips fg adjustable in playback Approx 4 5 cm 1 inches dia 350mW SUM 3 NS batteries Sony Eveready AM3 6 6 Alkaline batteries Microphone input jack minijack Dimensions hours Approx 90 8 x 133 x 31 7 mm w h d including projecting parts and controls Approx 300 g including batteries sensitivity 0 2 mV 72 dB for low impedance microphone Weight Earphone jack minijack for 8 oh...

Page 2: ...s transistors and diodes which are used most frequently will be described Dimension of transistors and capacitors Identification resistor layer side black color Type 3216 2125 narrow electrode 1 1 5 ceramic base side white color Resistor 2 9 L w 3 2 1 6 2 0 1 25 Unit mm T 0 45 0 6 0 35 0 5 electrodes Laminated Ceramic Capacitor 2 9 t A3 A5 Al I 1 I I 1 I I 2 3 1 2 3 1 2 Transistor Diode 2 I t 1 I ...

Page 3: ...ectrodes and the chip component will be disconnected Take careful precautions while disconnecting because if the chip component is force fully removed the land may peel off Never re use a disconnected chip component TCM SEV 3 Smoothing the soldered surface After disconnecting the chip component remove the solder by using a braided wire to sinooth the land surface o Connecting chip components The v...

Page 4: ...back mode Cue and review functions to quickly locate any desired portion of the tape One touch review function facilitates listening to the just recorded program Tape counter for indexing the tape contents Automatic shut off mechan ism activates at the end of the tape in either the record or playback mode 0 VOR selector f SPEED CONTROL knob 8 PAUSE switch 0 FF CUE button 0 REW REVIEW button 0 PLAY...

Page 5: ...C PB B LINE AMP ICIOI 1 31 BBQ AMP 0203 5301 1 ID OFF I LOW f IISS FILTER 0202 L I H VOR SENgTvlTY SWITCH 0306 010I REC BATT 5101 o Q L H B YVOR O N 13 V I SWITCHING 030 B VOR AMP 0301 RVIOI 3 d J l 0 2 i 0301 ID _l__ LEO DRIVE 0304 1 S10 4 1 REC PB OFF ON VOR SWITCHING 0303 VOR SW ITCHING qr VOR 3 ICOMPARTERI CONTRCX IC30I 1 2 0305 M9 01 MCT Jl rB 1 3V I ORY BATTERY r 1 SIZE AA IIEC DESIGNIITION ...

Page 6: ...elay block diagram Pig 2 shows the circuit which controls on and off of the motor and bias oscillation during VOR record ing The audio signal output from ICl0l pin is amplified at Q301 When the level of the audio signal input to Q301 is large Q302 base potential drops and Q302 goes on When this happens IC301 pinG voltage goes higher than pin Q and pin D goes high Then Q305 303 turn on and supply p...

Page 7: ...cedure in the numerical order given REAR CABINET f PTP1 l x 6 TYPE 2 f PTP1 l x 6 TYPE 3 i 0 Remove the rear cabinet f PTP1 7 x 5 TYPE 3J Remove the control panel TCM SEV f PTP1 7 x 6 TYPE 2 j i f PTP2 x 10 TYPE 2 i NON SLIT 0 Remove the battery lid AUDIO BOARD 0 PTP1 4 X 3 f Unlock 7 ...

Page 8: ... CASSETTE LID f Pull out the cassette shaft in the direction shown by the arrow VOR BOARD BBD BOARD SPEED CONTROL BOARD VOR board 8 0 Remove the cassette lid Remove the toggle arm from the cassette lid 81 4 X 5 speed control board I t ...

Page 9: ...www SteamPoweredRadio Com u 1 I TCM SEV MECHANISM SECTION PTPT 7 x 6 TYPE 3 RECORD PLAYBACK HEAD PINCH LEVER presision screws lug washer record playback I head v pinch lever V head spacer 9 ...

Page 10: ...orque Measurement Torque Meter Reading Forward 27 48 g cm 0 37 0 66 oz inch Fast Forward 55 75 g cm and Rewind 0 76 1 03 oz inch Back Tension 2 4 g cm 0 027 0 055 oz inch Tape Tension Measurement Meter Meter Reading Torque Meter CQ 102C CQ 201B CQ 102C 5 The adjustments should be performed with the rated power supply voltage unless otherwise noted CQ 403A More than 100 g 3 53 oz Head Height Adjust...

Page 11: ...3 After the adjustment lock the adjustment screw with suitable locking compound Adjustment Location headazimuth adjustment screw TCM BEV Tape Speed Adjustment Setting VOLUME knob SPEED CONTRO L knob center click center click Procedure Mode playback test tape I VS 48A 3kHz OdB Specification Speed checker 2 speed checker LFM 30 or digital frequency counter 10kn k l i i JJ earphone jack Digital frequ...

Page 12: ...5V I0dB when kHz is played back Next play back 6 3kHz and check that the level difference at this time is within 3dB If not connect or disconnect patterns and and repeat step 1 and 2 Adjustment Location Audio Board UR60i7 LU J f I Pattern connection 6 3kHz VTVM reading down t up Microphone Sensitivity Adjustment When replacing the microphone perform this adjust ment Mark of Microphone Pattern Conn...

Page 13: ...t correctly made sine wave will be clipped Adjustment Location BBD Board Side A adjustment tap RED 0203 ct N UN TCM SEV VOR LED Brightness Adjustment power supply voltage 2 SV de Procedure Place the set in VOR recording mode Adjust the resistance value so that the VOR LED is brighter than REC BATT LED a little The power value is Skfl 10kfl Adjustment Location VOR Board Side A adjustment resistor C...

Page 14: ... SECTION 5 DIAGRAMS 5 6 301 306 304 7 8 302 m 308 303 305 9 10 11 202 IC301 204 205 OR REC MOOE 10 flhh OR REC WOIJE n fUU1J _ _j T CM BEV 12 13 14 15 201 601 IC601 301 LED BOARD J U component side pattern f J B pattern signal path Through hole connection TCM BEV 16 1 01 103 1 02 17 18 19 ICI0I 20 21 22 23 0 IC A 102 D IOI C NIOI TOTA L CURRENT B FW D 1 07mA FF 9311A REW IIOmA REC 1 1 9mA C I D E ...

Page 15: ...7 Sk 3 3k 1 V 1 l l t T l 2 V l 880 I 7 I I 11 4V 3 l BBD I cii2 V l8 I R 2 16 11 VR2 11 1 lV1 H _ 0202 o 1 9 I 0 047 0 25V 3 31 3 31 ci 13 c s e R212 C 0_ 027 v 1 56k 3 2v1 c2zo c21 5l R214 R228 I 1 0 0 033 l68t2 R208 roora L4V 2 r I l l_l j 561 1k 4V oc 00 2 s R22 2 1 9 R223 62k 2 2k L_ll_ A S R R2 22 l4V r I I O l a g 0201 2SCl623 LOWPASS FIL TER R222 1 00 I f _______ O V V O RREC M ODE ro 1Rl2...

Page 16: ...dRadio Com TCM SEV 1 1 A B C D E F G H 41 J 2 EXPLODED V SECTION 6 IEWS AND PARTS LIST 3 30 18 31 14 4 5 6 40 15 3 C l o MIC901 i1 u Y 3 6 43 4 I 20 I 1 31 l 50 f J Pl28 1 n t s 1 f 2 24 33 8 20 7 2 A B C D E F G H J ...

Page 17: ...www SteamPoweredRadio Com TCM 8EV TCM t 1 2 3 4 5 6 7 2 A A B B C C 370 D D 348 E E 01 F F G G 0 M901 H H J J 21 ...

Page 18: ...www SteamPoweredRadio Com TCM BEV I 1 2 3 4 5 6 _ 7 3 B 22 ...

Page 19: ...www SteamPoweredRadio Com I 2 I TCM BEV A 4l c __L_2 __j____ 3 _ 1__ 4 _J5 ___j___J6 ___ 7 B F J 53 66 55 p l l 67 r I I I 01 1 1 37 23 26 ...

Page 20: ... No 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 ACCESSORY PACKING MATERIAL Part No Description 3 318 344 01 INDIVIDUAL CARTON 1 504 059 11 MAGNETIC EARPHONE ME 20H 3 314 036 00 SPACER 3 318 305 01 CUSHION 3 318 335 01 CASE CARRYING 3 570 631 81 BAG POLYETHYLENE 3 701 624 00 BAG POLYETHYLENE 3 701 999 00 LABEL SERIAL NUMBER 3 703 710 0...

Page 21: ...l39 Cl40 Cl41 C201 Items marked 6 are not stocked since they are seldom required for routine service Some delay should be antici pated when ordering these items A11 resistors are in ohms F nonfl arrmab1e COILS MMH mH UH H SEMICONDUCTORS Part No 6 A 3015 255 A 6 1 612 413 11 6 1 612 415 11 6 A 3078 003 A 6 A 3015 257 A 1 123 610 00 1 123 608 00 1 124 430 00 1 123 607 00 1 124 222 00 1 123 608 00 1 ...

Page 22: ...E EBF5 36 Rl02 1 216 051 00 R103 1 216 073 00 HRP901 8 829 336 35 HEAD PP134 36T Rl05 1 216 198 00 ClOl 8 759 911 78 IC CX 807 R106 1 216 073 00 IC201 8 759 400 16 IC MN3307 R107 1 216 099 00 IC202 8 759 400 16 IC MN3307 Rl08 1 216 091 00 IC301 8 759 700 07 IC NJM2903M Rl09 1 216 039 00 IC601 8 759 400 12 IC AN6612S RllO 1 216 029 00 JlOl 1 507 921 00 JACK Rl 11 1 216 113 00 J102 1 507 921 00 JACK...

Page 23: ...X ma fferent from those used in the TCM SE ELECTRICAL PARTS Ref No 5 l 8W R306 5 1 lOW R307 5 1 lOW R308 5 1 lOW R309 5 1 lOW R310 5 1 lOW R311 5 1 lOW R312 5 1 lOW R313 5 1 lOW R314 5 1 lOW R315 5 1 lOW R316 5 1 lOW R317 5 1 lOW R318 5 1 lOW R319 5 1 lOW R320 5 1 lOW R351 5 1 lOW R352 5 1 lOW R353 5 1 lOW R354 5 1 lOW R355 5 1 lOW R601 5 1 lOW R602 5 1 lOW R603 5 1 lOW R606 R607 5 1 lOW 5 1 lOW R...

Page 24: ...www SteamPoweredRadio Com TCM SEV 9 951 384 11 Sony Corporation 28 r 1 English 84EJ4102 1 Printed in Japan 1984 ...

Page 25: ...nd later VOR board and BBD board have been changed The parts in the table below have been changed Ref No FORMER NEW Description Description C212 CERAMIC CHIP 0 047MF 1 163 081 00 CERAMIC CHIP US Model Canadian Model AEP Model E Model 0 22MF No 1 September 1984 CHANGED C213 CERAMIC CHIP lOOP DELETED C217 CERAMIC CHIP lOOP DELETED C221 1 163 081 00 CERAMIC CHIP 0 22MF ADDED C351 1 124 434 00 ELECT 2...

Page 26: ...www SteamPoweredRadio Com TCM SEV US model 16 001 and later Canadian model 10 301 and later AEP model 13 701 and later E model 14 801 and later 2 ...

Page 27: ...d Readings are taken under no signal conditions with a VOM DC 50kn V no mark PB REC VOA REC TAPE STOP VOA REC TAPE RUNNING Voltage variations may be noted due to normal produc tion tolerances AC voltage readings in the bias oscillator with a VTVM Total current is measured with no cassette installed Switch Ref No Switch Position S101 TONE L S102 PAUSE OFF S103 POWER OFF S104 REC PB PB S301 VOA OFF ...

Page 28: ...OE ruin ORRe ioE n n Fl n J LJ LJ LJ l P AEP model 12 201 model VOR fE Ka Iro c I 7 2 8 l i _J 13 701 and later 14 801 and later 13 14 301 TCM BEV TCM BEV 15 16 17 601 IOI IC601 1 03 1 02 ill US model 16 001 and later Canadian model 10 301 and later ICI0I 18 MRP901 PP1 3 l 6T RB P8 19 102 lt llU QllREIIT FWD 1 07111il ffJm AEP model 13 701 and later E model 14 801 and later 20 21 IOI CNIOI 1 __ e ...

Page 29: ... ov b o06s ll7VI 1 c121 L __ __ _J l l l fl 1 1 Alll 1 J_l _J 6 4 v R EC 12 R606 SI04 I 11 TAPE REC B SPEED L v 1 1 s 0101 EAS 82 1 3 200 O f M 2l r FE_ RENCEl l R602 l 2 3VI tev 1 i V TA 4 311 2Si1 1i 3 OVI 2Si1 1i 3 2 2 RE p 1 0 6 V f G 6 SS 33 J 0 1 V _ R607 nHGO L n I I RV601 RV601 I 10k 1ISPEED LI R601 2 7 I THP604 BIAS OSC REC AMP n iSI02 C602 GSO _ _ _ ifMEl l 50V R 8 C601 SPEED CONTROLl BO...

Page 30: ...www SteamPoweredRadio Com US model 16 001 and later Canadian model 10 301 and later AEP model 13 701 and later E model 14 801 and later 9 TCM SEV TCM i 9 95 ...

Page 31: ...oweredRadio Com TCM SEV 9 951 384 82 US model 16 001 and later Canadian model 10 301 and later AEP model 13 701 and later E model 14 801 and later Sony Corporation 10 English 84104102 1 Printed in Japan 1984 lL e ...

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