Sony TC-WE675 - Dual A/r Cassette Deck Service Manual Download

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TC-WE675

REVISION HISTORY

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Ver.

Date

Description of Revision

1.0

2001.04

New

Summary of Contents for TC-WE675 - Dual A/r Cassette Deck

Page 1: ...sing Sony TYPE II cassette 58 dB using Sony TYPE IV cassette S N ratio improvement With Dolby B NR on Approx 5 dB at 1 kHz 10 dB at 5 kHz With Dolby C NR on Approx 15 dB at 500 Hz 20 dB at 1 kHz Harmonic distortion 0 4 using Sony TYPE Icassette 160 nWb m 315 Hz 3rd H D 1 8 using Sony TYPE IV cassette 250 nWb m 315 Hz 3rd H D Frequency response DOLBY NR OFF 30 16 000 Hz 3 dB IEC 20 17 000 Hz 6 dB u...

Page 2: ...hassis must not exceed 0 5 mA 500 microampers Leak age current can be measured by any one of three methods 1 A commercial leakage tester such as the Simpson 229 or RCA WT 540A Follow the manufacturers instructions to use these instruments 2 A battery operated AC milliammeter The Data Precision 245 digital multimeter is suitable for this job 3 Measuring the voltage drop across a resistor by means o...

Page 3: ...2 Printed Wiring Board MAIN Section 14 6 3 Schematic Diagram MAIN 1 4 Section 15 6 4 Schematic Diagram MAIN 2 4 Section 16 6 5 Schematic Diagram MAIN 3 4 Section 17 6 6 Schematic Diagram MAIN 4 4 Section 18 6 7 Printed Wiring Board DECK Section 19 6 8 Schematic Diagram DECK Section 19 6 9 Schematic Diagram LEAF SW Section 20 6 10 Printed Wiring Board LEAF SW Section 21 6 11 Schematic Diagram PANEL...

Page 4: ... Eject Deck B button ws REC MUTING W Deck B button wd PAUSE X Deck B button wf x Deck B button wg DOLBY NR B C switch wh DOLBY NR OFF ON FILTER wj H FRONT Deck A button wk h BACK Deck A button wl REC z Deck A button e REC MUTING W Deck A button ea A Eject Deck A button es PAUSE X Deck A button ed x CLEAR Deck A button ef AMS M Deck A button RMS eg m AMS Deck A button RMS eh DISPLAY button ej CHECK...

Page 5: ...P2 4 case qs screw BVTP 3x8 qf screw BVTP 3x8 qd screw BVTP 3x8 qg two screws BVTT 3x6 qj claw qh claw qk front panel assy 8 CN301 7 CN401 2 CN807 1 CN5802 3 CN803 4 CNA806 5 flat type wire Deck A 9 CN002 6 flat type wire Deck B 0 screw BVTP 3x8 qawire Set Case Front Panel Assy Cassette Lid Assy Deck A B Mechanism Deck Assy Deck A B The equipment can be removed using the following procedure ...

Page 6: ...6 TC WE675 2 3 CASSETTE LID ASSY DECK A B 2 4 MECHANISM DECK ASSY DECK A B 2 four claws 1 Push the EJECT button 3 cassette lid assy 1 two screws BVTP 2 6x8 3 mechanism deck assy 2 two screws BVTP 2 6x8 ...

Page 7: ...r The fluorescent display tube displays the number or special message corresponding to the button pressed The message displayed differs according to the position of the switch SECTION 3 SERVICE MODE RESET 0 MEMORY 1 DECK A 2 DECK B 3 A B REC 4 HIGH NOMAL 5 m AMS 6 AMS M 7 x Segment check display 2 h 8 H 9 PAUSE X A REC MUTING W b REC z C FADER d ARL E SYNCHRO All lit DOLBY NR switch 3 OFF h B PLAY...

Page 8: ...f press the button to turn on the power The fluorescent display tube lights up for about one second and the test mode is set The test mode performs the following two special functions Playback speed switching function Pressing the HIGH NORMAL button switches the playback speed between standard double speed Counter RESET MEMORY function Resets the counter when recording starts When rewound with the...

Page 9: ... DECK A 9 Press the PITCH CONTROL button to set to ON 10 Set PITCH CONTROL knob to mechanical center 11 Press the H button to playback 12 Adjust RV318 so that the frequency counter reading becomes 2 990 90 Hz Adjustment Location MAIN board See page 14 Sample value of wow and flutter W RMS JIS less than 0 3 test tape WS 48B Playback Level Adjustment DECK A DECK B Procedure Forward Playback Mode Adj...

Page 10: ...See page 14 Record Level Adjustment DECK A DECK B Setting REC LEVEL knob standard record position See page 11 Procedure 1 Set to test mode See page 11 2 Insert a tspe into deck B press the REC z button and then press the H button to start recording 3 Record Mode 4 Playback Mode set AF OSC attenuator 10 kΩ 600 Ω LINE IN 1 315 Hz 2 10 kHz 50 mV 23 8 dBs blank tape CS 123 3 Record Mode set recorded p...

Page 11: ...RV318 PITCH CONTROL DECK A RV317 NORMAL SPEED DECK A RV316 HIGH SPEED DECK A 100 81 80 51 31 1 IC801 50 30 RV102 REC LEVEL DECK A L RV202 REC LEVEL DECK A R RV417 NORMAL SPEED DECK B RV416 HIGH SPEED DECK B RV241 REC BIAS DECK B R RV141 REC BIAS DECK B L RV201 REC LEVEL R REC BIAS T241 BIAS CURRENT DECK B R BIAS CURRENT DECK B L T141 52 33 32 20 64 1 IC551 19 51 RV101 REC LEVEL L RV121 PB LEVEL DE...

Page 12: ... SP MAIN board RECVOL board v G H P board v D HEAD RELAY REC PB board Deck B HEAD RELAY REC PB board Deck A LEAF SW REC PB board Deck B PANEL board v A DIRECTION board v C POWER board v F LEAF SW REC PB board Deck A TRANS B board v B vA to vG are including into the mounted PANEL board ...

Page 13: ...ne H adjustment for repair Voltage is dc with respect to ground under no signal detuned condition no mark STOP REC PB Can not be measured 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 wavefor...

Page 14: ...14 14 TC WE675 6 2 PRINTED WIRING BOARD MAIN SECTION See page 12 for Circuit Boards Location Page 23 Page 23 Page 25 Page 21 Page 23 Page 23 Page 19 Page 23 Page 19 ...

Page 15: ... 9 IC804 G 8 IC805 G 4 IC806 G 3 Q101 B 3 Q102 A 5 Q103 F 7 Semiconductor Location Ref No Location Ref No Location Q104 C 5 Q201 C 2 Q202 A 4 Q203 F 7 Q204 E 1 Q302 H 7 Q303 H 7 Q306 F 10 Q307 G 10 Q308 F 10 Q311 H 8 Q314 H 8 Q316 G 10 Q317 G 10 Q318 G 10 Q341 D 13 Q342 D 13 Q343 D 13 Q351 G 11 Q371 C 10 Q373 C 10 Q402 G 6 Q403 G 6 Q411 G 5 Q414 G 5 Q417 F 5 Q441 G 2 Q442 H 2 Q443 H 2 Q451 C 1 Q47...

Page 16: ...16 16 TC WE675 6 4 SCHEMATIC DIAGRAM MAIN 2 4 SECTION Page 18 Page 18 Page 17 Page 22 Page 19 Page 18 Page 18 Page 17 Page 17 Page 15 Page 15 ...

Page 17: ...AM MAIN 3 4 SECTION See page 13 for Waveforms See page 14 for Printed Wiring Board See page 26 for IC Pin Functions Page 15 Page 15 Page 16 Page 16 Page 18 Page 18 Page 18 Page 18 Page 22 Page 22 Page 20 Page 24 Page 15 Page 15 Page 16 ...

Page 18: ...18 18 TC WE675 6 6 SCHEMATIC DIAGRAM MAIN 4 4 SECTION Page 17 Page 17 Page 17 Page 15 Page 16 Page 16 Page 22 Page 16 Page 16 Page 15 Page 17 ...

Page 19: ...WIRING BOARD LEAF SW SECTION See page 12 for Circuit Boards Location 6 8 SCHEMATIC DIAGRAM LEAF SW SECTION TO MAIN BOARD TO MAIN BOARD Page 14 Page 16 PLUNGER SOLENOID is supplied as the Mechanism Deck TCM 230ASR41B A 2100 942 A ...

Page 20: ...20 20 TC WE675 6 9 SCHEMATIC DIAGRAM DISPLAY SECTION Page 17 ...

Page 21: ... WE675 6 10 PRINTED WIRING BOARD DISPLAY SECTION See page 12 for Circuit Boards Location D904 B 3 D905 B 2 D906 B 2 D907 B 2 D908 B 2 IC901 B 5 IC902 A 2 Q901 A 2 Semiconductor Location Ref No Location Page 14 ...

Page 22: ...22 22 TC WE675 6 11 SCHEMATIC DIAGRAM PANEL SECTION Page 17 Page 17 Page 18 Page 15 16 ...

Page 23: ...23 23 TC WE675 6 12 PRINTED WIRING BOARD PANEL SECTION See page 12 for Circuit Boards Location Page 14 Page 14 Page 14 Page 14 1 2 A B ...

Page 24: ...24 24 TC WE675 6 13 SCHEMATIC DIAGRAM POWER SECTION Page 17 ...

Page 25: ...25 25 TC WE675 6 14 PRINTED WIRING BOARD POWER SECTION See page 12 for Circuit Boards Location Page 14 ...

Page 26: ... I Power hold input 6 VOL OUT O Volume output 7 A B SEL I Playback A B selector input L A H B 8 CONTROL A IN I Control A signal input 9 CONTROL A OUT O Control A signal output 10 FL CLK I FL CLK control input 11 FL DATA IN I Display control input 12 FL DATA OUT O Display control output 13 CS I Sircs signal input 14 REC MUTE A O Recording mute output L Mute ON 15 REC PB O Record playback dolby NR m...

Page 27: ...l AUS Australian model The components identified by mark 0 or dotted line with mark 0 are critical for safety Replace only with part number specified Les composants identifiés par une marque 0 sont critiques pour la sécurité Ne les remplacer que par une piéce portant le numéro spécifié Ref No Part No Description Remark Ref No Part No Description Remark 2 4 232 149 71 CASE 410726 3 3 703 244 00 BUS...

Page 28: ...ORD POWER AEP 053 1 777 218 11 CORD POWER AUS 053 1 783 531 51 CORD POWER US CND 54 4 978 398 21 CUSHION 55 3 346 265 31 HOLDER PC BOARD 56 A 2007 866 A MAINBOARD COMPLETE US CND SP AUS 56 A 2007 869 A MAINBOARD COMPLETE AEP UK 57 4 232 237 01 FOOT DIA 30 58 3 970 608 01 SUMITITE B3 BV 0T901 1 431 786 12 TRANSFORMER POWER AEP UK AUS 0T901 1 431 788 12 TRANSFORMER POWER US CND 0T901 1 431 789 12 TR...

Page 29: ...ASSY CASSETTE 102 X 4953 497 1 LID B ASSY CASSETTE 103 4 232 407 01 BUTTON EJECT 104 3 022 410 01 DAMPER 105 3 019 450 01 PLATE L FULCRUM 106 X 4953 543 1 HOLDER R ASSY CASSETTE 107 3 019 455 01 SPRING R LOADING 108 3 019 451 01 PLATE R FULCRUM 109 X 4953 542 1 HOLDER L ASSY CASSETTE 110 3 019 454 01 SPRING L LOADING 111 3 019 453 01 LEVER LOCK R 112 3 019 456 01 SCREW STEP 113 3 019 452 01 LEVER ...

Page 30: ... vG vF vC 151 X 4953 492 1 PANEL US ASSY FRONT US CND 151 X 4953 493 1 PANEL EU ASSY FRONT AEP UK SP AUS 152 4 232 409 01 KNOB DIA 21 153 4 232 410 01 KNOB SLIDE 154 4 951 620 01 SCREW 2 6X8 BVTP 155 4 978 398 21 CUSHION 156 4 231 973 01 BUTTON POWER 157 4 232 412 01 BUTTON DIA 3 5 US CND AEP UK SP AUS 157 4 232 412 11 BUTTON DIA 3 5 SILVER AEP 158 3 931 378 01 KNOB F10 159 1 769 950 11 WIRE FLAT ...

Page 31: ...PTT 2X4 GROUND POINT 205 X 4953 986 1 BASE B ASSY HEAD 206 A 4476 817 A HEAD BOARD COMPLETE 207 A 4476 816 A LEAF SW BOARD COMPLETED 208 3 041 947 01 BELT FR 209 3 041 946 01 BELT CAPSTAN B 210 X 4952 851 1 FLYWHEEL B FWD ASSY 211 X 4952 852 1 FLYWHEEL B REV ASSY 212 A 2004 854 A MOTOR ASSY CAPSTAN 213 3 359 464 01 WASHER CAPSTAN 201 not supplied not supplied not supplied 202 203 204 206 207 205 2...

Page 32: ...REC B SIDE S1009 1 771 205 11 SWITCH LEAF A 2007 866 A MAIN BOARD COMPLETE US CND SP AUS A 2007 869 A MAIN BOARD COMPLETE AEP UK CAPACITOR C101 1 162 284 31 CERAMIC 150PF 10 00 50V C102 1 126 961 11 ELECT 2 2uF 20 00 50V C103 1 162 600 11 CERAMIC 0 0047uF 30 00 16V C104 1 126 963 11 ELECT 4 7uF 20 00 50V C105 1 162 302 11 CERAMIC 0 0022uF 20 00 16V C106 1 126 963 11 ELECT 4 7uF 20 00 50V C107 1 12...

Page 33: ...C432 1 107 584 11 CERAMIC 4PF 0 25PF 500V C433 1 126 965 11 ELECT 22uF 20 00 50V C434 1 126 959 11 ELECT 0 47uF 20 00 50V C441 1 136 293 11 FILM 0 0082uF 5 00 100V C443 1 130 299 00 MYLAR 0 012uF 5 00 50V C444 1 137 436 11 MYLAR 0 0039uF 5 00 50V C445 1 137 436 11 MYLAR 0 0039uF 5 00 50V C446 1 126 965 11 ELECT 22uF 20 00 50V C451 1 126 964 11 ELECT 10uF 20 00 50V C501 1 126 964 11 ELECT 10uF 20 0...

Page 34: ...71 11 FILTER LOW PASS TRANSISTOR Q101 8 729 029 94 TRANSISTOR DTC143TSA Q102 8 729 142 25 TRANSISTOR 2SD1020 HFE Q103 8 729 030 02 TRANSISTOR DTC144ESA Q104 8 729 030 02 TRANSISTOR DTC144ESA Q201 8 729 029 94 TRANSISTOR DTC143TSA Q202 8 729 142 25 TRANSISTOR 2SD1020 HFE Q203 8 729 030 02 TRANSISTOR DTC144ESA Q204 8 729 030 02 TRANSISTOR DTC144ESA Q302 8 729 801 93 TRANSISTOR 2SD1387 3 Q303 8 729 0...

Page 35: ... 5 1 4W R216 1 247 843 11 CARBON 3 3K 5 1 4W R217 1 249 429 11 CARBON 10K 5 1 4W R218 1 249 409 11 CARBON 220 5 1 4W F R219 1 249 417 11 CARBON 1K 5 1 4W F R220 1 249 439 11 CARBON 68K 5 1 4W R221 1 247 881 00 CARBON 120K 5 1 4W R222 1 247 807 31 CARBON 100 5 1 4W R223 1 247 882 11 CARBON 130K 5 1 4W R224 1 247 850 11 CARBON 6 2K 5 1 4W R225 1 249 440 11 CARBON 82K 5 1 4W R226 1 249 421 11 CARBON ...

Page 36: ... 5 1 4W R577 1 249 428 11 CARBON 8 2K 5 1 4W F R578 1 249 428 11 CARBON 8 2K 5 1 4W F R579 1 249 426 11 CARBON 5 6K 5 1 4W R580 1 249 422 11 CARBON 2 7K 5 1 4W F R581 1 249 425 11 CARBON 4 7K 5 1 4W F R582 1 249 425 11 CARBON 4 7K 5 1 4W F R583 1 247 852 11 CARBON 7 5K 5 1 4W R584 1 249 430 11 CARBON 12K 5 1 4W R585 1 249 428 11 CARBON 8 2K 5 1 4W F R586 1 249 428 11 CARBON 8 2K 5 1 4W F R587 1 24...

Page 37: ...55 061 11 RELAY RY451 1 755 061 11 RELAY TRANSFORMER T131 1 433 381 11 TRANSFORMER BIAS OSCILLATOR T141 1 433 381 11 TRANSFORMER BIAS OSCILLATOR T231 1 433 381 11 TRANSFORMER BIAS OSCILLATOR T241 1 433 381 11 TRANSFORMER BIAS OSCILLATOR T341 1 429 222 11 TRANSFORMER BIAS OSCILLATION T441 1 429 222 11 TRANSFORMER BIAS OSCILLATION TEST PIN TP331 1 766 276 11 PIN CONNECTOR PC BOARD 3P TP441 1 766 276...

Page 38: ...K S916 1 771 349 21 SWITCH KEYBOARD j AMS B DECK S917 1 771 349 21 SWITCH KEYBOARD J AMS B DECK S918 1 771 349 21 SWITCH KEYBOARD zREC B DECK S921 1 771 349 21 SWITCH KEYBOARD s B DECK S922 1 771 349 21 SWITCH KEYBOARD X B DECK S923 1 771 349 21 SWITCH KEYBOARD G B DECK S924 1 771 349 21 SWITCH KEYBOARD g B DECK S925 1 771 349 21 SWITCH KEYBOARD WREC MUTING B DECK S926 1 771 349 21 SWITCH KEYBOARD...

Page 39: ...NSTRUCTION ENGLISH 4 232 596 21 MANUAL INSTRUCTION FRENCH SPANISH CND AEP SP 4 232 596 31 MANUAL INSTRUCTION GERMAN DUTCH SWEDISH ITALIAN POLISH AEP 4 232 596 71 MANUAL INSTRUCTION CHINESE SP HARDWARE LIST 1 7 685 646 79 SCREW BVTP 3X8 TYPE2 N S 2 7 685 871 01 SCREW BVTT 3X6 S 3 7 685 851 09 SCREW BVTT 2X4 S 4 7 685 852 04 SCREW BVTT 2X5 S 5 7 685 902 21 SCREW PTPWH 2 6X8 TYPE2 ...

Page 40: ...ISTORY Clicking the version 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 2001 04 New ...

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