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Toshiba W-528 Service Manual

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FILE NO. 120-200205
SERVICE MANUAL
VIDEO CASSETTE RECORDER
W-528
JAN, 2002

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Summary of Contents for Toshiba W-528

  • Page 1 FILE NO. 120-200205 SERVICE MANUAL VIDEO CASSETTE RECORDER W-528 JAN, 2002...
  • Page 2 TOTAL CONTENTS 1. Precautions 2. Reference Information 3. Product Specifications 4. Disassembly and Reassembly 5. Alignment and Adjustment 6. Exploded View 7. Replacement Parts List 8. Block Diagram 9. PCB Diagrams 10. Schematic Diagrams...
  • Page 3 Alternatively, wear a discharging Wrist-strap device. (Be sure to remove it prior to applying power--this is an electric shock precaution.) Toshiba...
  • Page 4 Always inspect for pinched, out- of-place, or frayed wiring. Do not change the spacing between components and the printed circuit board. Check the AC power cord for damage. Make sure that leads and components do not touch thermally hot parts. Toshiba...
  • Page 5 2. Reference Information 2-1 Operation of Controls Toshiba...
  • Page 6 Reference Information Toshiba...
  • Page 7 Reference Information Toshiba...
  • Page 8 Reference Information Toshiba...
  • Page 9 Reference Information Toshiba...
  • Page 10 Reference Information Toshiba...
  • Page 11 Reference Information Toshiba...
  • Page 12 Reference Information Toshiba...
  • Page 13 Reference Information Toshiba...
  • Page 14 Reference Information 2-10 Toshiba...
  • Page 15 Reference Information Toshiba 2-11...
  • Page 16 Reference Information 2-12 Toshiba...
  • Page 17 Reference Information Toshiba 2-13...
  • Page 18 Reference Information 2-2 IC Blocks 2-2-1 IC301 (LA71201M) 2-14 Toshiba...
  • Page 19 Reference Information 2-2-2 IC501 (AN3663FBP) Toshiba 2-15...
  • Page 20 Reference Information 2-2-3 IC601 (MN101D02D) 2-16 Toshiba...
  • Page 21 Line input : 308 mV(rms), more than 47 Kohm, pin jack Audio output Line input : 308 mV(rms), less than 4.7 Kohm, pin jack Audio frequency range(Hi-Fi) 20Hz - 20KHz Audio dynamic range(Hi-Fi) 68dB Utilization conditions Temperature : 5°C to 40°C Humidity : less than RH 80% Toshiba...
  • Page 22 Product Specifications MEMO Toshiba...
  • Page 23 4-1-3 Ass’y Front AV Removal Disconnect the CN701 from the Ass'y PCB-Main and then lift the Ass'y F/AV PCB up. ´ RELEASE 3 HOOKS (BOTTOM VIEW) Fig. 4-2 Ass’y Front Panel Removal CN701 Fig. 4-3 Ass’y Front AV Removal Toshiba...
  • Page 24 4-1-4 Chassis Removal ˇ 4 SCREWS ¨ FLAT CABLE ˆ FLAT CABLE ’ ASS'Y-DECK Ø FLAT CABLE ˝ ASS'Y MAIN-PCB Œ 2 SCREWS ∏ RELEASE HOOK ASSEMBLY POINT (ALIGN TWO ARROWS) ´ BRACKET-FRAME ” RELEASE HOOK Fig. 4-4 Chassis Removal Toshiba...
  • Page 25 4-2-1 Top View Œ ´ ˇ ¨ ˆ Ø Fig. 4-5 Top parts Location-1 Œ GEAR FL CAM ´ MOTOR LOADING ASS’Y ˇ LEVER FL ARM ASS’Y ¨ HOLDER FL CASSETTE ASS’Y ˆ LEVER FL DOOR Ø SLIDER FL DRIVE Toshiba...
  • Page 26 ´ CYLINDER ASS’Y ˝ GEAR IDLE ˇ ACE HEAD ASS’Y Ô LEVER IDLE ¨ LEVER UNIT PINCH ASS’Y  LEVER T BRAKE ASS’Y ˆ LEVER #9 GUIDE ASS’Y Ò DISK T REEL Ø LEVER TENSION ASS’Y ∏ BAND BRAKE ASS’Y Toshiba...
  • Page 27 Œ GEAR JOINT 1 ´ GEAR JOINT 2 ˇ BRACKET GEAR ¨ MOTOR CAPSTAN ASS’Y ˆ LEVER T LOAD ASS’Y Ø GEAR LOADING DRIVE ∏ LEVER S LOAD ASS’Y ” HOLDER CLUTCH ASS’Y ’ BELT PULLEY ˝ SLIDER CAM Toshiba...
  • Page 28 "A" of the Lever FL Cassette-R ´ at disassembling and reassembling. Fig. 4-9 Lever FL Door Removal RAIL [B] Œ HOLDER FL ´ LEVER FL CASSETTEE -R CASSETTEE ASS`Y "A" BOSS [A] Fig. 4-8 Holder FL Cassette Ass’y Removal Toshiba...
  • Page 29 Œ LEVER FL ARM ASS`Y Fig. 4-12 Lever FL Arm Ass’y Removal ´ GEAR FL CAM Œ SLIDER FL DRIVE Fig. 4-10 Slider FL Drive Removal Œ GEAR FL CAM GEAR WORM WHEEL POST TIMING POINT Fig. 4-11 Gear FL Cam, Gear Worm Toshiba...
  • Page 30 Œ CABLE FLAT LOADING MOTOR CYLINDER CONNECTING PART CONNECTING PART "B" ¨ DAMPER ´ CONNECTOR WAFER CAPSTAN Œ GEAR WORM WHEEL "A" "C" Fig. 4-13 Gear Worm Wheel Removal ˇ CONNECTOR WAFER Fig. 4-14 Cable Flat Removal Toshiba...
  • Page 31 Fig. 4-15 Motor Loading Ass’y Removal Œ SCREW ´ BRAKET GEAR Fig. 4-16 Bracket Gear, Gear Joint 1,2 Removal Œ GEAR JOINT1 ´ GEAR JOINT2 ˇ SLIDER CAM TIMING POINT 2 TIMING POINT 1 Fig. 4-17 Gear Joint 1,2 Assembly Toshiba...
  • Page 32 TIMING POINT 3 Fig. 4-18 Gear Loading Drive, Slider Cam, Lever T, S Load Ass’y Removal PIN A PIN C PIN D PIN B ˇ SLIDER CAM Fig. 4-19 Gear Loading Drive, Slider Cam, Lever Load S, T Ass’y Assembly Toshiba 4-10...
  • Page 33 Main Base to the Mark[B]. ˇ BAND BRAKE ASS`Y ´ LEVER TENTION ASS`Y Œ SPRING TENTION LEVER Fig. 4-20 Lever Pinch Drive, STOPPER "A" Lever Tension Drive Removal MARK[B] Fig. 4-21 Lever Tension Ass’y, Band Brake Ass’y Removal 4-11 Toshiba...
  • Page 34 ´ GEAR IDLE "B" ´ GEAR IDLE HOOK "C" HOOK(A) ˇ SPRING BRAKE Œ LEVER S BRAKE ASS`Y HOOK(C) HOOK(B) ´ LEVER T BRAKE ASS`Y Fig. 4-23 Gear Idle Ass’y Removal Fig. 4-22 Lever Brake S, T Ass’y Removal Toshiba 4-12...
  • Page 35 Center Ass'y as shown in detail B. ´ DISK T REEL Œ WASHER SLIT ´ HOLDER CLUTCH ASS`Y Fig. 4-24 Disk S, T Reel Removal DETAIL A <BAD> SPRING <GOOD> DETAIL B SPRING <BAD> <GOOD> Fig. 4-25 Holder Clutch Ass’y Removal 4-13 Toshiba...
  • Page 36 ´ GEAR CENTER ASS`Y Fig. 4-28 Guide Cassette Door Removal Fig. 4-26 Lever Up Down Ass’y Removal GEAR CENTER ASS'Y GUIDE LEVER UP DOWN ASS'Y RING GEAR POST HOOK MAIN BASE Fig. 4-27 Lever Up Down Ass’y Removal Toshiba 4-14...
  • Page 37 Œ LEVER UNIT PINCH ASS`Y Œ SPRING #9 GUIDE ´ LEVER #9 GUIDE ASS`Y "B" ´ PLATE JOINT ˇ SPRING PINCH DRIVE Fig. 4-30 Lever #9 Guide Ass’y Removal Fig. 4-29 Lever Unit Pinch Ass’y, Plate Joint, Spring Pinch Drive Removal 4-15 Toshiba...
  • Page 38 Ass’y ´. 2) Lift the FE Head ´. 2) Remove the screw Œ. 3) Lift the ACE Head Ass’y ´. Œ FE HEAD Œ SCREW ´ HEAD ACE ASS`Y Fig. 4-31 FE Head Removal Fig. 4-32 ACE Head Removal Toshiba 4-16...
  • Page 39 2) When reinstalling, Don't push down too much on Screw Driver. Œ 3 SCREWS Fig. 4-33 Slider S, T Ass’y Removal ´ PLATE GROUND DECK ˇ CYLINDER ASS'Y Fig. 4-34 Plate Ground Deck, Cylinder Ass’y Removal 4-17 Toshiba...
  • Page 40 Main Base. After reinstalling, adjusting the tape transport system again. ´ 3 SCREWS Fig. 4-35 Belt Pulley Removal Œ DAMPER CAPSTAN ˇ MOTOR CAPSTAN ASS'Y Fig. 4-36 Damper Capstan,Motor Capstan Ass’y Removal Toshiba 4-18...
  • Page 41 3) Rotate Gear Worm Œ clockwise using screw driver Œ HOOK again up to the state of eject mode and then pick out the tape.(Refer to Fig.4-39) SLEEVE-HEAD CLEANER FRAME Fig. 4-38 Post #8 Guide Ass’y Removal Fig. 4-40 4-19 Toshiba...
  • Page 42 ∆ ∆ CAPSTAN MOTOR PULLEY BELT PULLEY ∆ HOLDER CLUTCH ASS’Y GEAR CENTER ASS’Y GEAR IDLE (2Point) LOADING MOTOR BAND BRAKE ASS’Y BRAKE T ASS’Y ∆ : Cleaning O : Check and replacement in necessary : Add Oil Toshiba 4-20...
  • Page 43 5-1-1 Location of adjustment button of remote control POWER X-Point (Tracking Center) Adjustment CM SKIP A.SELECT VC-522 EJECT PLAY ENTER STOP SLOW PAUSE/STILL REMAIN/ COUNT DISPLAY SP/ SLP COUNTER RESET Head Switching Adjustment TIMER I.SELECT TV VOL PROG. CANCEL NVRAM Option Setting Fig. 5-1 Toshiba...
  • Page 44 Alignment and Adjustment 5-1-2 Test point location for adjustment mode setting Short-Circuit for a second and release. Fig. 5-2 Main PCB (Top View) Toshiba...
  • Page 45 Fig. 5-3 Location of Tape Transport Adjustment PINCH ROLLER FE HEAD CYLINDER ASS'Y GUIDE ROLLER "S" GUIDE ROLLER "T" POST TENSION #8 GUIDE POST #9 GUIDE POST #3 GUIDE POST MAIN BASE ACE HEAD CAPSTAN SHAFT Fig. 5-4 Tape Travel Diagram Toshiba...
  • Page 46 Test point : TP601 (Control Pulse) TP602 (H’D S/W -Trigger) TP301 (Envelope) TP302 (Audio output) TP303 (Video output) Test tape : ST-N1 BLANK TAPE : T-160 AUDIO OUTPUT ENVELOPE HEAD SWITCHING Fig. 5-5 Location of Test point (Main PCB-Top View) Toshiba...
  • Page 47 4) Connect the CH-1 probe to TP301 (Envelope) the CH-2 probe to TP602 (H’D switching pulse) and then trigger to CH-1. 5) Insert the (-) driver into the X-Point adjustment hole and adjust it so that envelope wavwform is maximum. 6) Turn the Power off. Toshiba...
  • Page 48 ) driver to obtain a flat video RF envelope as shown in Fig. 5-11. IDEAL ENVELOPE S HEIGHT TOO HIGH S HEIGHT TOO LOW T HEIGHT TOO HIGH T HEIGHT TOO LOW GUIDE ROLLER S GUIDE ROLLER T Fig. 5-11 Guide Roller S, T Height Adjustment Toshiba...
  • Page 49 3) Brake is operated by slider cam at FF/REW mode. 4) Transportation of accurate driving force is done by gears. (Gear Center Ass’y) Note : If the spec. does not meet the followings speci- fications, replace the holder clutch ass’y and then recheck. Toshiba...
  • Page 50 17 18 19 20 21 22 23 24 17 18 19 20 21 22 23 24 ENTER : SAVE ENTER : SAVE Fig. 5-14 Fig. 5-15 <Table 5-2> MODEL OPTION NUMBER W-528 2, 3, 4, 5, 6, 7, 10, 13, 16, 21, 22, 27, 28 Toshiba...
  • Page 51 6-3 Mechanical Parts (Top Side) - - - - - - - - - - - - - - - - - - - - - - - 6-4 Mechanical Parts (Bottom Side) - - - - - - - - - - - - - - - - - - - - Toshiba...

  • Page 52: Packing Assembly

    Exploded View 6-1 Packing Assembly Y102 Y101 UT01 A702 A702 A701 Toshiba...

  • Page 53: Instrument Assembly

    Exploded View 6-2 Instrument Assembly Toshiba...

  • Page 54: Mechanical Parts (Top Side)

    G001 B475 K490 K502 K530 G555 G530 B474 G510 G680 B473 G420 G480 (OPTIONAL) G450 K546 K250 G560 K240 (OPTIONAL) K248 G681 B410 K350 K110 B440 B448 K182 K340 K330 B452 G546 K470 K140 K188 G070 G527 G520 G060 Toshiba...

  • Page 55: Mechanical Parts (Bottom Side)

    Exploded View 6-4 Mechanical Parts (Bottom Side) G542 B462 B456 B560 B460 B500 B458 B464 B488 B501 B489 B484 B468 K222 K200 K225 K221 B478 B570 Toshiba...
  • Page 56 Exploded View MEMO Toshiba...
  • Page 57 CUSHION-F/B;M-656/TSB,EPS,-,-,-,-,- UT01 BY634675 AC59-00019R REMOCON-ASSY;VC-522,TSB,HI-FI,STANDARD,- Y101 BY634687 AC68-01704A MANUAL USERS;W-522/W-422,TSB,ENG,-,MOJO1 Y102 BY634274 AC39-42001J CABLE-RF ASSY;#1365,-,1.2MT,75-75OHM,-,- - INSTRUMENT PARTS - BY731250 AC97-01895A ASSY-FRONT PANEL;HIPS 94V2,W-528/TSB,BLA BY730050 AC64-30892B CABINET-TOP;-,SECC,0.5,-,-,-,TM6524,PCM BY731019 AC63-00026A COVER-BOTTOM;SV-G877,SPTE,T0.3,-,-,-,- 70790218 AC60-12126A SCREW-BH;-,-,FE,FZY,BH,-,-,4*12,-,- 70790082 AC60-12134A SCREW-TAP BH;-,FZB,2-4X16,FE,BH,-,-,2-4X 70790002 AC60-10063A SCREW-TAPTITE;-,-,L12,ZPC3,+,-,M3,-,SWRC...
  • Page 58 K530 BY730758 AC66-00034A LEVER-FL ARM ASS’Y;TS-10,-,-,-,-,-,-,- K546 BY730086 AC61-50658A GUIDE-CASS. DOOR;X-9,POM,-,-,-,NTR - ELECTRICAL PARTS - BY630239 AC92-01077D ASSY PCB-MAIN;W-522/TSB,TS-10A,HI-FI,120 BY630298 AC94-00132B ASSY-F A/V;W-528/TSB,01-TSB,360,F-A/V < INTEGRATED CIRCUITS > IC1SS1 BY530021 0604-000186 PHOTO-COUPLER;TR,-,200mW,DIP-4,ST IC1SS2 70795271 AC14-12006D IC;KA431Z,TO-92,TAPING IC301 BY631174 1204-001832 IC-VIDEO PROCESS;LA71201,QFP,80P,-,PLAST...
  • Page 59 BY130046 2401-001235 C-AL;4.7uF,20%,250V,WT,TP,10x12.5,5 C1SR04 70795586 2301-000417 C-FILM,PEF;24nF,5%,50V,TP,6.5x10.5x4mm,5 C1SR05 BY130204 2301-000180 C-FILM,PEF;18nF,0.05,100V,TP,7.2x4.5x8.0 C1SR07 BY130272 2305-001021 C-FILM,MPEF;100nF,20%,275V,TP,17.5x7x13. C1SS01 BY130187 2401-003137 C-AL;330UF,20%,50V,WT,TP,10X16MM,5 C1SS03 BY130216 2201-000812 C-CERAMIC,DISC;2.2nF,20%,400V,Y5U,BK,12. C1SS06 70795431 2401-000385 C-AL;10uF,20%,100V,GP,TP,6.3x11,5 C1SS07 70796014 2401-002162 C-AL;1000uF,20%,25V,WT,TP,10x20,5mm C1SS08 BY130045 2401-001126 C-AL;330uF,20%,25V,WT,TP,10x12.5,5 C1SS10 BY130015 2401-001479 C-AL;470uF,20%,10V,GP,TP,-,- Toshiba...
  • Page 60 BY130273 2401-000414 C-AL;10uF,20%,16V,GP,TP,4x7,5 C503 BY130206 2401-001254 C-AL;4.7uF,20%,35V,GP,TP,4x7,5 C504 BY130273 2401-000414 C-AL;10uF,20%,16V,GP,TP,4x7,5 C505 BY130206 2401-001254 C-AL;4.7uF,20%,35V,GP,TP,4x7,5 C506 BY130042 2401-000598 C-AL;1uF,20%,50V,GP,TP,4x7,5 C507 BY130277 2401-001169 C-AL;33uF,20%,16V,GP,-,6.3x7,2.5mm C508 BY130273 2401-000414 C-AL;10uF,20%,16V,GP,TP,4x7,5 C509 BY130273 2401-000414 C-AL;10uF,20%,16V,GP,TP,4x7,5 C510 BY130082 2301-000224 C-FILM,PEF;22nF,5%,50V,TP,7.4x3.9x13mm,5 C511 BY130352 2203-000206 C-CERAMIC,CHIP;100nF,10%,50V,X7R,TP,2012 Toshiba...
  • Page 61 70796281 2203-000260 C-CERAMIC,CHIP;10nF,10%,50V,X7R,TP,2012 C701 BY130262 2202-000173 C-CERAMIC,MLC-AXIAL;1nF,10%,50V,Y5P,TP,1 C702 70795075 2202-000797 C-CERAMIC,MLC-AXIAL;10NF,30%,16V,Y5S,TP, C703 BY130280 2401-002165 C-AL;100uF,20%,16V,GP,TP,6.3x7,5 C801 BY130282 2401-003107 C-AL;47uF,20%,16V,GP,TP,5x7,5 C802 BY130015 2401-001479 C-AL;470uF,20%,10V,GP,TP,-,- C803 BY130282 2401-003107 C-AL;47uF,20%,16V,GP,TP,5x7,5 C805 BY130426 2401-000438 C-AL;10uF,20%,25V,GP,-,5x11,2mm C8H1 BY130027 2202-002037 C-CERAMIC,MLC-AXIAL;100nF,80-20%,50V,Y5V C8HF1 BY130027 2202-002037 C-CERAMIC,MLC-AXIAL;100nF,80-20%,50V,Y5V Toshiba...
  • Page 62 BY230090 2001-000005 R-CARBON;390ohm,5%,1/8W,AA,TP,1.8x3.2mm R511 70795589 2007-000872 R-CHIP;4.7KOHM,5%,1/10W,DA,TP,2012 R512 BY230090 2001-000005 R-CARBON;390ohm,5%,1/8W,AA,TP,1.8x3.2mm R513 70795589 2007-000872 R-CHIP;4.7KOHM,5%,1/10W,DA,TP,2012 R514 70795039 2001-000780 R-CARBON;470OHM,5%,1/8W,AA,TP,1.8X3.2MM R515 70795541 2007-001055 R-CHIP;6.2KOHM,5%,1/10W,DA,TP,2012 R516 70795039 2001-000780 R-CARBON;470OHM,5%,1/8W,AA,TP,1.8X3.2MM R517 70795701 2007-000804 R-CHIP;36KOHM,5%,1/10W,DA,TP,2012 R518 70795718 2007-001224 R-CHIP;9.1KOHM,5%,1/10W,DA,TP,2012 R519 70795041 2001-000786 R-CARBON;47KOHM,5%,1/8W,AA,TP,1.8X3.2MM Toshiba...
  • Page 63 70795006 2001-000290 R-CARBON;10KOHM,5%,1/8W,AA,TP,1.8X3.2MM R723 70795006 2001-000290 R-CARBON;10KOHM,5%,1/8W,AA,TP,1.8X3.2MM R724 70795006 2001-000290 R-CARBON;10KOHM,5%,1/8W,AA,TP,1.8X3.2MM R725 70795006 2001-000290 R-CARBON;10KOHM,5%,1/8W,AA,TP,1.8X3.2MM R726 70795054 2001-000969 R-CARBON;75OHM,5%,1/8W,AA,TP,1.8X3.2MM R728 70795054 2001-000969 R-CARBON;75OHM,5%,1/8W,AA,TP,1.8X3.2MM R729 70795054 2001-000969 R-CARBON;75OHM,5%,1/8W,AA,TP,1.8X3.2MM R730 70795054 2001-000969 R-CARBON;75OHM,5%,1/8W,AA,TP,1.8X3.2MM R731 70795054 2001-000969 R-CARBON;75OHM,5%,1/8W,AA,TP,1.8X3.2MM R732 70795054 2001-000969 R-CARBON;75OHM,5%,1/8W,AA,TP,1.8X3.2MM Toshiba...
  • Page 64 BY330067 AC26-00002B TRANS SWITCHING;-,-,EE2621,-,UL/CSA/DEMK RM701 BY730627 AC32-00002A MODULE REMOCON;-,GP1U291Q,38KHZ,-,7.3X13 SW401 BY632003 3408-001042 SWITCH-SLIDE;DC 12V,100mA,-,OFF-ON,- SW602 BY632005 AC34-20100B SWITCH-REC;-,-,X-9,- SW603 BY632004 AC34-20100A SWITCH-MODE;-,-,X-9,- TM401 BY634275 AC40-00007A TM BLOCK;115VD025AP,NTSC-M,115VD025AP,Y VA1SS1 BY634022 1405-001026 VARISTOR;470V,600A,9x7mm,TP XT301 BY633012 2801-003399 CRYSTAL-UNIT;3.579545MHz,15ppm,28-AAA,S, XT601 70796216 2801-001384 CRYSTAL-UNIT;14.31818MHz,30ppm,28-AAA,16 Toshiba...
  • Page 65 8. Block Diagram Toshiba...
  • Page 66 Block Diagram MEMO Toshiba...
  • Page 67 9-3 Front AV - Bottom - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Toshiba...
  • Page 68 PCB Diagrams 9-1 Main Toshiba...
  • Page 69 PCB Diagrams 9-2 Front AV -Top 9-3 Front AV-Bottom Toshiba...
  • Page 70 PCB Diagrams MEMO Toshiba...

  • Page 71: Table Of Contents

    10-5 TM-Block/Input-Output - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 10-7 Toshiba 10-1...

  • Page 72: Block Identification Of Main Pcb

    Important safety notices : Components identified with the mark have the special characteristics for safety. When replacing any of these components. Use only the same type. ◆ Block Identification of Main PCB Component Side Conductor Side 10-2 Toshiba...

  • Page 73: S.m.p.s./Power

    Schematic Diagrams 10-1 S.M.P.S./Power Toshiba 10-3...

  • Page 74: Logic

    Schematic Diagrams 10-2 Logic 10-4 Toshiba...

  • Page 75: A/V

    Schematic Diagrams 10-3 A/V Toshiba 10-5...

  • Page 76: Hi-Fi

    Schematic Diagrams 10-4 Hi-Fi 10-6 Toshiba...

  • Page 77: Tm-Block/Input-Output

    Schematic Diagrams 10-5 TM-Block/Input-Ouput Toshiba 10-7...
  • Page 78 Schematic Diagrams MEMO 10-8 Toshiba...
  • Page 79 TOSHIBA VIDEO PRODUCTS PTE LTD 438B ALEXANDRA ROAD BLOCK B #06-01 ALEXANDRA TECHNOPARK SINGAPORE 119968...

Table of Contents