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Sony TC-WE625 - Dual Auto Reverse Cassette, Service Manual

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Sony TC-WE625 - Dual Auto Reverse Cassette Service Manual Download Page 23

– 31 –

– 32 –

Ref. No.

Location

D31

B-1

IC31

C-1

IC81

B-2

Q51

A-1

Q52

A-1

Q53

B-1

Q71

B-3

• Semiconductor

Location

TC-WE625/WE725/WE825S

5-12. PRINTED WIRING BOARDS — DECK A SECTION —

5-13. SCHEMATIC DIAGRAM — DECK A SECTION —

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(Page 16)

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Summary of Contents for TC-WE625 - Dual Auto Reverse Cassette

Page 1: ... IV tape Sony Type IV METAL 58 dB S N ratio improvement approximate values With Dolby B NR on 5 dB at 1 kHz 10 dB at 5 kHz With Dolby C NR on 15 dB at 500 Hz 20 dB at 1 kHz With Dolby S NR on TC WE825S only 10 dB at 100 Hz 24 dB at 1 kHz SPECIFICATIONS Continued on next page Photo TC WE825S Dolby noise reduction extension manufactured under license from Dolby Laboratories Licensing Corporation HX ...

Page 2: ...RITÉ LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT NE REMPLACER CES COMPOSANTS QUE PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY To Exposed Metal Parts on Set 0 15µF 1 5kΩ AC voltmeter 0 75V Earth Ground Fig A Using an AC voltmeter to check ...

Page 3: ... 13 Schematic Diagram Deck A Section 32 5 14 Printed Wiring Boards Deck B Section 33 5 15 Schematic Diagram Deck B Section 34 5 16 Printed Wiring Board DOLBY S Section TC WE825S only 35 5 17 Schematic Diagram DOLBY S Section TC WE825S only 35 6 EXPLODED VIEWS 6 1 Case Section 38 6 2 Chassis Section 39 6 3 Cassette Holder Section 40 6 4 Front Panel Section 41 6 5 Tape Mechanism Section 1 42 6 6 Tap...

Page 4: ...PLAY button 11 Tape operation buttons Deck A 0 AMS RMS button AMS RMS button p CLEAR Stop button ª BACK Reverse play button FRONT Foward play button P PAUSE button R REC MUTING button r REC button 12 Eject button Deck A 13 DOLBY NR switches ON OFF FILTER switch B C S switch S use for TC WE825S 14 Tape operation buttons Deck B 0 AMS button AMS button p Stop button ª Reverse play button Foward play ...

Page 5: ... 3x8 2 lug plate 3 CNA807 1 BVTP 3x8 2 power voltage selector 4 CNS802 5 CNA801 US Canadian 6 CNA803 7 CNA806 8 CN51 0 CN002 CNP73 claw CN501 502 BVTP 3x6 claw CN503 504 BVTP 3x8 front panel assy 9 CN51 WE725 WE825S 5 BVTP 2 6x8 4 BVTP 2 6x8 6 mechanism deck 3 cassette lid 2 claws 2 2 MECHANISM DECK 1 Press the EJECT button POWER VOLTAGE SELECTOR 1 2 Singapore Malaysia FRONT PANEL ASSY 1 ...

Page 6: ...onnector 7 gear trigger 5 claws 6 fitting base 1 Pull the capstan belt and put around claws 2 Pull the square belt and put around claws 0 reel motor 5 claws 6 AUDIO board 2 connector 4 claw 3 connector 1 square belt 9 P 2 6x2 8 7 B 2 6x3 8 capstan motor ground plate ...

Page 7: ... 7 2 5 HEAD DECK ASSY 5 torsion spring 3 claw 1 claw 6 claw 7 head deck assy 2 lever pinch F assy 4 lever pinch R assy ...

Page 8: ...ustment should be performed in the publication Be sure to male playback adjustment at first 2 The adjustments and measurement should be performed for both L CH and R CH Switch position DOLBY NR switch OFF DIRECTION MODE switch A Standard record position Deliver the standard input signal level to input jack and set the REC LEVEL control to obtain the standard output signal level as follows Record M...

Page 9: ...ency counter reading becomes 6 000 20 Hz 5 Release test mode after adjustment is completed Normal speed adjustment 1 Set to FWD playback mode 2 Adjust RV71 so that the frequency counter reading becomes 3 000 10 Hz Pitch control adjustment TC WE725 WE825S only 1 Push the PITCH CONTROL switch 2 Set RV902 to mechanical center 3 Set to FWD playback mode 4 Adjust RV601 so that the frequency counter rea...

Page 10: ...C attenuator 10 kΩ 600 Ω LINE IN 1 315 Hz 2 10 kHz 38 8 mV 26 dB blank tape CS 123 Confirm that the 10 kHz playback output is 0 0 5 dB relative to the 315 Hz output If necessary adjust RV81 L CH RV91 R CH and repeat the steps given above Adjustment Location AUDIO board See page 11 set recorded portion level meter LINE OUT 47 kΩ Record Level Adjustment DECK A DECK B Setting REC LEVEL control standa...

Page 11: ...S ADJ RV81 L RV72 HIGH TAPE SPEED ADJ PLAYBACK LEVEL ADJ RV71 NORMAL RV21 R RV11 L T81 L T91 R BIAS CONSUMPTION CURRENT ADJ TP81 RV101 L RECORD LEVEL ADJ DECK B RV201 R RV202 R RECORD LEVEL ADJ DECK A RV102 L RV601 TAPE SPEED ADJ PITCH CONTROL main board component side ...

Page 12: ...output for auto calibration DECK B 22 GP CAL 0 B O GEQ CAL 0 output for auto calibration DECK B 23 GP CAL 1 B O GEQ CAL 1 output for auto calibration DECK B 24 POWER OUT O Power hold output 25 RECEQ HIGH NORM O REC EQ high normal select output L Normal 26 PASS MUTE DOLBY O Audio selector H Pass Open Mute L Dolby 27 BS AMS OFF O AMS amp selector H BS Open AMS L OFF 28 EX IN 0 I Expander control inp...

Page 13: ... CAP M H L O Capstan motor high normal select output L ON 62 77 P16 P1 O Fluorescent indicator tube segment driver 78 85 G1 G8 O Fluorescent indicator tube grid driver 86 G6 G7 O Fluorescent indicator tube grid driver 87 G7 G8 O Fluorescent indicator tube grid driver 88 VFDP Fluorescent indicator tube power supply 28 V 89 VDD Power supply 5 V 90 N C Connected to power supply 91 VSS Ground 92 REEL ...

Page 14: ...extracted from the component side Through hole b Pattern from the side which enables seeing The other layers patterns are not indicated Chip transistor of abbreviation E C B THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS In addition to this the necessary note is printed in each block no mark PB DECK A REC DECK A PB DECK B REC DECK B STOP Impossible to measure Voltages are tak...

Page 15: ...5 3 PRINTED WIRING BOARDS MAIN SECTION TC WE625 WE725 WE825S 15 16 Page 35 Page 35 Page 33 Page 33 Page 28 Page 15 Page 27 Page 31 Page 31 Page 31 Page 28 Page 31 Page 28 Page 25 ...

Page 16: ... 8 D803 F 8 D804 F 8 IC501 C 2 IC502 F 1 IC504 E 12 IC561 A 1 IC601 E 10 IC701 A 6 IC801 F 7 IC802 F 6 IC803 E 6 IC804 E 5 IC805 F 4 IC806 G 12 IC807 G 12 IC808 G 3 IC809 G 4 Q101 E 2 Q102 A 3 Q201 D 1 Q202 A 3 Q401 A 4 Q451 G 13 Q452 F 11 Q453 F 12 Q461 G 2 Q462 F 3 Q463 F 3 Q501 B 3 Q502 B 1 Q503 B 1 Q601 H 6 Q602 H 6 Q603 H 6 Q604 H 7 Q605 H 6 Q606 H 7 Q607 H 7 Q621 D 13 Q701 A 7 Q702 B 6 Q703 ...

Page 17: ...TC WE625 WE725 WE825S 19 20 5 5 SCHEMATIC DIAGRAM MAIN SECTION 2 4 Refer to page 37 for IC Block Diagrams Page 34 Page 34 Page 34 Page 18 Page 21 Page 23 ...

Page 18: ...TC WE625 WE725 WE825S 21 22 5 6 SCHEMATIC DIAGRAM MAIN SECTION 3 4 Page 18 Page 29 Page 30 Page 20 Page 24 Page 26 Page 29 Page 29 ...

Page 19: ...TC WE625 WE725 WE825S 23 24 5 7 SCHEMATIC DIAGRAM MAIN SECTION 4 4 Page 18 Page 20 Page 22 Page 35 Page 35 ...

Page 20: ...C WE625 WE725 WE825S 5 8 PRINTED WIRING BOARDS POWER SECTION 25 26 1 2 S701 3 4 5 6 VOLTAGE 220V 120V 230 240V NOT REPLACEABLE BUILT IN TRANSFORMER 04 5 9 SCHEMATIC DIAGRAM POWER SECTION Page 16 Page 22 ...

Page 21: ... 27 28 5 10 PRINTED WIRING BOARDS PANEL SECTION TC WE625 WE725 WE825S Page 16 Page 15 Page 16 Page 16 Page 16 ...

Page 22: ... 29 30 5 11 SCHEMATIC DIAGRAM PANEL SECTION TC WE625 WE725 WE825S Page 22 Page 22 Page 22 Page 21 Page 21 ...

Page 23: ...1 IC81 B 2 Q51 A 1 Q52 A 1 Q53 B 1 Q71 B 3 Semiconductor Location TC WE625 WE725 WE825S 5 12 PRINTED WIRING BOARDS DECK A SECTION 5 13 SCHEMATIC DIAGRAM DECK A SECTION Page 16 Page 16 Page 16 Page 16 Page 16 Page 17 Page 17 Page 17 Page 17 ...

Page 24: ...TED WIRING BOARDS DECK B SECTION 5 15 SCHEMATIC DIAGRAM DECK B SECTION LEAF SW B BOARD Ref No Location D31 B 1 IC31 C 1 IC81 B 2 Q51 A 1 Q52 A 1 Q53 B 1 Q71 B 3 Semiconductor Location Page 15 Page 15 Page 15 Page 15 Page 19 Page 19 Page 19 ...

Page 25: ... 35 36 TC WE625 WE725 WE825S 5 16 PRINTED WIRING BOARD DOLBY S SECTION TC WE825S only 5 17 SCHEMATIC DIAGRAM DOLBY S SECTION TC WE825S only Page 15 Page 24 ...

Page 26: ... FHVCR FLVCR SHVCR SLVCR SHDET SLDET SHICG FHICG SLICG FLICG FHDET FLDET V to I Conv H VREF IREF V to I Conv H LFVCR LFICG VCC 17 IREF 18 TCF2L 19 TCF1L 20 TCS2L 21 TCS1L 22 FBOL 23 SCBOL 24 SCINL 25 RECOUT 26 ANTSAT 27 HLSOUT 28 MCBO 29 MC3IN 30 MC4IN MC4 MC3DS MC3DT MC2 MC4 MC3 MC1 MC1 MC HLSMP 2 MCTC 3 ZL1 4 ZL2 5 LFIN 6 TCL1 7 TCL2 8 SCINH 9 FBOH 10 TCF1H 11 TCF2H 12 TCS2H 13 TCS1H 14 VCT 15 V...

Page 27: ... pour la sécurité Ne les remplacer que par une piéce portant le numéro spécifié Ref No Part No Description Remark 6 1 CASE SECTION N N Ref No Part No Description Remark Abbreviation CND Canadian model AUS Australian model SP Singapore model MY Malaysia model CH Chinese model 3 3 3 3 3 3 3 not supplied S701 3 2 3 1 4 5 1 3 021 228 01 PANEL BACK WE625 US 1 3 021 228 11 PANEL BACK WE625 CND 1 3 021 2...

Page 28: ...E725 WE825S 53 3 346 265 31 HOLDER PC BOARD 54 4 977 591 01 FOOT F50150S EXCEPT US CND 54 4 977 591 11 FOOT F50150S US CND 55 4 978 398 21 CUSHION 56 1 769 883 11 WIRE FLAT TYPE 7 CORE WE625 56 1 769 916 11 WIRE FLAT TYPE 9 CORE WE725 WE825S 57 A 2007 801 A DOLBY S BOARD COMPLETE WE825S 58 1 575 651 21 CORD POWER AEP SP MY 59 1 751 529 11 CORD POWER UK 60 1 590 926 11 CORD POWER US CND 61 1 696 84...

Page 29: ... 31 BUTTON EJ 104 X 4945 947 1 HOLDER L ASSY CASSETTE 105 4 959 231 21 SPRING L TORSION 106 3 354 963 01 DAMPER 107 3 354 955 01 LEVER EJ SAFETY LEVER L 108 3 354 961 11 SPRING EJ SAFETY SPRING L 109 3 354 953 01 LEVER LOCK LEVER L 110 3 354 957 01 JOINT LOCK LEVER 111 X 4945 946 1 HOLDER R ASSY CASSETTE 112 4 959 232 21 SPRING R TORSION 113 3 354 956 01 LEVER EJ SAFETY LEVER R 114 3 354 962 11 SP...

Page 30: ... WE625 CH SP MY AUS 151 X 3375 510 1 PANEL ASSY FRONT WE825S US 152 3 021 239 01 KNOB REC 153 4 996 698 41 EMBLEM SONY 154 4 951 620 01 SCREW 2 6X8 BVTP 155 4 978 398 21 CUSHION 156 3 021 232 01 BUTTON COUNTER 157 3 021 230 01 BUTTON FUNCTION 158 X 3371 370 1 BUTTON SYNCHRO ASSY 159 3 931 429 41 BUTTON POWER EXCEPT US CND 159 3 931 429 51 BUTTON POWER US CND 160 3 380 952 21 BUTTON WE725 WE825S 16...

Page 31: ...TAN 214 3 575 321 00 RETAINER THRUST CAPSTAN 215 3 359 436 11 BASE THRUST RETAINER FITTING 216 3 359 414 01 SCREW PTPWH 2X23 217 1 638 983 11 MOTOR FLEXIBLE BOARD 218 A 2007 040 A AUDIO A BOARD COMPLETE WE625 218 A 2007 509 A AUDIO A BOARD COMPLETE WE725 WE825S 218 A 2007 040 A AUDIO B BOARD COMPLETE 219 3 359 466 01 BELT FR SQUARE 220 1 634 841 14 LEAF SW A BOARD DECK A WE725 WE825S 220 1 638 020...

Page 32: ...01 GEAR TRIGGER 256 3 359 427 01 SLIDER REVERSE SLIDER 257 3 936 483 01 GEAR CAM GEAR 258 3 359 454 01 SPRING TORSION 259 3 359 429 01 SLIDER BRAKE PLATE 260 3 359 456 01 SPRING TRIGGER SPRING TORSION 261 X 3366 569 1 ARM ASSY FR 262 3 924 185 11 SPRING FR ARM TORSION 263 3 359 419 11 GEAR FR GEAR 264 3 359 421 01 CLUTCH REEL DISC 265 3 359 418 01 PULLEY FR PULLEY 266 X 3359 415 1 CHASSIS ASSY MEC...

Page 33: ...uF 16V C71 1 164 346 11 CERAMIC CHIP 1uF 16V C80 1 124 234 00 ELECT 22uF 20 16V C81 1 164 232 11 CERAMIC CHIP 0 01uF 50V C82 1 136 157 00 FILM 0 022uF 5 50V C83 1 164 004 11 CERAMIC CHIP 0 1uF 10 25V C84 1 136 478 11 FILM 470PF 5 630V C85 1 136 433 11 FILM 100PF 5 630V C86 1 163 143 00 CERAMIC CHIP 0 0012uF 5 50V C87 1 136 273 00 FILM 75PF 5 630V C88 1 163 003 11 CERAMIC CHIP 330PF 10 50V C89 1 12...

Page 34: ...4 234 00 ELECT 22uF 20 16V C33 1 124 234 00 ELECT 22uF 20 16V C51 1 164 161 11 CERAMIC CHIP 0 0022uF 10 100V C52 1 164 161 11 CERAMIC CHIP 0 0022uF 10 100V C53 1 163 019 00 CERAMIC CHIP 0 0068uF 10 50V C54 1 136 601 11 FILM 0 01uF 5 630V C56 1 164 505 11 CERAMIC CHIP 2 2uF 16V C57 1 164 346 11 CERAMIC CHIP 1uF 16V C71 1 164 346 11 CERAMIC CHIP 1uF 16V C80 1 124 234 00 ELECT 22uF 20 16V C81 1 164 2...

Page 35: ...6 417 11 COIL BIAS OSCILLATION T81 1 433 381 11 TRANSFORMER BIAS OSCILLATOR T91 1 433 381 11 TRANSFORMER BIAS OSCILLATOR TEST PIN TP81 1 568 449 11 HOUSING CONNECTOR PC BOARD 3P A 2007 801 A DOLBY S BOARD COMPLETE WE825S CAPACITOR C1 1 136 165 00 FILM 0 1uF 5 50V C2 1 163 012 00 CERAMIC CHIP 0 0018uF 10 50V C3 1 163 012 00 CERAMIC CHIP 0 0018uF 10 50V C4 1 164 222 11 CERAMIC CHIP 0 22uF 25V C5 1 1...

Page 36: ...7 00 METAL CHIP 15K 5 1 10W R937 1 216 089 00 RES CHIP 47K 5 1 10W WE825S R941 1 216 051 00 METAL CHIP 1 2K 5 1 10W R942 1 216 055 00 METAL CHIP 1 8K 5 1 10W R943 1 216 059 00 METAL CHIP 2 7K 5 1 10W R944 1 216 063 00 RES CHIP 3 9K 5 1 10W R945 1 216 069 00 METAL CHIP 6 8K 5 1 10W R946 1 216 077 00 METAL CHIP 15K 5 1 10W R951 1 216 051 00 METAL CHIP 1 2K 5 1 10W R952 1 216 055 00 METAL CHIP 1 8K 5...

Page 37: ... 818 11 CARBON 300 5 1 4W R83 1 247 834 11 CARBON 1 3K 5 1 4W R84 1 249 417 11 CARBON 1K 5 1 4W R85 1 249 408 11 CARBON 180 5 1 4W R86 1 249 408 11 CARBON 180 5 1 4W WE725 WE825S SWITCH S81 1 571 958 11 SWITCH PUSH 1 KEY STOP S82 1 571 281 21 SWITCH LEAF CrO2 S83 1 571 281 21 SWITCH LEAF METAL S84 1 571 281 21 SWITCH LEAF ERASE PROOF SIDE A S85 1 571 281 21 SWITCH LEAF ERASE PROOF SIDE B S86 1 571...

Page 38: ...ECT 1uF 20 50V C704 1 126 969 11 ELECT 220uF 20 50V C705 1 126 963 11 ELECT 4 7uF 20 50V C706 1 126 926 11 ELECT 1000uF 20 10V C707 1 126 926 11 ELECT 1000uF 20 10V C708 1 126 963 11 ELECT 4 7uF 20 50V C709 1 126 963 11 ELECT 4 7uF 20 50V C710 1 126 935 11 ELECT 470uF 20 6 3V C711 1 126 947 11 ELECT 47uF 20 35V C801 1 126 933 11 ELECT 100uF 20 10V C803 1 126 959 11 ELECT 0 47uF 20 50V C810 1 163 0...

Page 39: ...K Q704 8 729 010 29 TRANSISTOR MSD601 RST1 Q705 8 729 421 22 TRANSISTOR UN2211 US CND Q706 8 729 421 22 TRANSISTOR UN2211 US CND Q707 8 729 010 05 TRANSISTOR MSB709 RT1 Q708 8 729 140 04 TRANSISTOR 2SB1116A L Q801 8 729 421 19 TRANSISTOR UN2213 Q802 8 729 010 29 TRANSISTOR MSD601 RST1 RESISTOR R101 1 216 073 00 METAL CHIP 10K 5 1 10W R102 1 216 105 00 RES CHIP 220K 5 1 10W R103 1 216 097 00 RES CH...

Page 40: ... R575 1 216 070 00 METAL CHIP 7 5K 5 1 10W R576 1 216 075 00 METAL CHIP 12K 5 1 10W R577 1 216 071 00 METAL CHIP 8 2K 5 1 10W R578 1 216 071 00 METAL CHIP 8 2K 5 1 10W R579 1 216 067 00 METAL CHIP 5 6K 5 1 10W R580 1 216 059 00 METAL CHIP 2 7K 5 1 10W R581 1 216 065 00 RES CHIP 4 7K 5 1 10W R582 1 216 065 00 RES CHIP 4 7K 5 1 10W R583 1 216 070 00 METAL CHIP 7 5K 5 1 10W R584 1 216 075 00 METAL CH...

Page 41: ...00 RES CHIP 62K 5 1 10W R845 1 216 084 00 METAL CHIP 30K 5 1 10W R846 1 216 077 00 METAL CHIP 15K 5 1 10W R847 1 216 070 00 METAL CHIP 7 5K 5 1 10W R848 1 216 073 00 METAL CHIP 10K 5 1 10W R849 1 216 073 00 METAL CHIP 10K 5 1 10W R850 1 216 073 00 METAL CHIP 10K 5 1 10W R851 1 216 073 00 METAL CHIP 10K 5 1 10W R852 1 216 083 00 METAL CHIP 27K 5 1 10W R853 1 216 083 00 METAL CHIP 27K 5 1 10W R854 1...

Page 42: ...RIABLE RESISTOR RV902A 1 225 173 21 RES VAR CARBON 50K PITCH CONTROL AEP UK Ref No Part No Description Remark SWITCH S947A 1 762 609 11 SWITCH SLIDE DIRECTION MODE S960A 1 554 118 00 SWITCH PUSH 1 KEY PITCH CONTROL AEP UK SW C BOARD EXCEPT US CND SUPPLIED WITH MAIN BOARD COMPLETE CAPACITOR C001 1 113 925 11 CERAMIC 0 01uF 20 250V CONNECTOR CN002 1 568 226 11 PIN CONNECTOR 2P AEP UK CH AUS CN002 1 ...

Page 43: ...ANSFORMER POWER SP MY ACCESSORIES PACKING MATERIALS 1 559 713 31 CORD CONNECTION AUDIO 1 777 172 11 CORD CONNECTION CONTROL A1 CND 3 023 344 01 INDIVIDUAL CARTON WE725 3 023 369 01 INDIVIDUAL CARTON WE625 US CND AUS 3 023 370 01 INDIVIDUAL CARTON WE625 CH SP MY 3 023 373 01 CUSHION 3 023 374 01 INDIVIDUAL CARTON WE825S AEP UK 3 025 278 01 INDIVIDUAL CARTON WE825S US 3 862 713 11 MANUAL INSTRUCTION...

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