Toshiba W-512 Service Manual
Toshiba W-512 Service Manual

Toshiba W-512 Service Manual

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FILE NO. 120-200023
SERVICE MANUAL
VIDEO CASSETTE RECORDER
W-512
DEC, 2000

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Summary of Contents for Toshiba W-512

  • Page 1 FILE NO. 120-200023 SERVICE MANUAL VIDEO CASSETTE RECORDER W-512 DEC, 2000...
  • 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 Diagram 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: Reference Information

    2. Reference Information 2-1 Operation of Controls INTRODUCTION Toshiba...
  • Page 6 Reference Information PREPARATION Toshiba...
  • Page 7 Reference Information PREPARATION Toshiba...
  • Page 8 Reference Information PREPARATION Toshiba...
  • Page 9 Reference Information PREPARATION Toshiba...
  • Page 10 Reference Information PLAYBACK Toshiba...
  • Page 11 Reference Information PLAYBACK Toshiba...
  • Page 12 Reference Information PLAYBACK Toshiba...
  • Page 13 Reference Information RECORDING Toshiba...
  • Page 14 Reference Information RECORDING 2-10 Toshiba...
  • Page 15 Reference Information ADDITIONAL INFORMATION Toshiba 2-11...
  • Page 16 Reference Information 2-2 IC Blocks 2-2-1 IC301 (LA71200M) 2-12 Toshiba...
  • Page 17 Reference Information 2-2-2 IC501 (AN3662FBP) Toshiba 2-13...
  • Page 18 Reference Information 2-2-3 IC601 (MN101D02D) 2-14 Toshiba...
  • Page 19: Product Specifications

    Line input : 308 mV(rms), more than 47 Kohm, pin jack Audio output Line input : 308 mV(rms), less than 47 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 20: Disassembly And Reassembly

    Œ REMOVE 2 SCREWS ´ Lift up the Cabinet Top in the direction of arrow by releasing the Hook. Œ RELEASE 4 HOOKS (Top View) Fig. 4-1 Cabinet Top Removal ´ RELEASE 3 HOOKS (Bottom View) Fig. 4-2 Ass’y Front Panel Removal Toshiba...
  • Page 21 4-1-3 Chassis Removal ¨ FLAT CABLE ˆ FLAT CABLE ˇ 3 SCREWS Ø CONNECTOR ˝ ASS'Y-DECK ’ ASS'Y MAIN-PCB Œ 2 SCREWS ∏ RELEASE HOOK ASSEMBLY POINT (ALIGN TWO ARROWS) ´ BRACKET-FRAME ” RELEASE HOOK Fig. 4-3 Chassis Removal Toshiba...
  • Page 22: Deck Parts Locations

    4-2-1 Top View Œ ´ ˇ ¨ ˆ Ø Fig. 4-4 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 23 ´ 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 24 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 25: Lever Fl Door Removal

    Lever FL Cassette-R ´ at disassembling and "B" reassembling. ´ LEVER FL DOOR ˇ HOOK "C" Fig. 4-7 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 26 Œ LEVER FL ARM ASS`Y Fig. 4-11 Lever FL Arm Ass’y Removal ´ GEAR FL CAM Œ SLIDER FL DRIVE Fig. 4-9 Slider FL Drive Removal Œ GEAR FL CAM GEAR WORM WHEEL POST TIMING POINT Fig. 4-10 Gear FL Cam, Gear Worm Toshiba...
  • Page 27: Gear Worm Wheel Removal

    1) Remove the screw Œ. 1) Remove the Gear Worm wheel Œ. 2) Remove the Motor Loading Ass’y ´. ´ MOTOR LOADING ASS`Y Œ SCREW Œ GEAR WORM WHEEL Fig. 4-13 Motor Loading Ass’y Removal Fig. 4-12 Gear Worm Wheel Removal Toshiba...
  • Page 28: Bracket Gear, Gear Joint 2, 1 Removal

    Fig. 4-14 Bracket Gear, Gear Joint 1,2 Removal Fig. 4-16 Gear Loading Drive, Slider Cam, Lever T, S Load Ass’y Removal Œ GEAR JOINT1 ´ GEAR JOINT2 ˇ SLIDER CAM TIMING POINT 2 TIMING POINT 1 Fig. 4-15 Gear Joint 1,2 Assembly Toshiba...
  • Page 29 LEVER LOAD T LEVER LOAD S Lever Tension Drive Removal TIMING POINT 2 TIMING POINT 3 PIN A PIN C PIN D PIN B ˇ SLIDER CAM Fig. 4-17 Gear Loading Drive, Slider Cam, Lever Load S, T Ass’y Assembly Toshiba 4-10...
  • Page 30: Lever Tension Ass'y, Band Brake Ass'y Removal

    ˇ SPRING BRAKE Œ SPRING TENTION LEVER STOPPER Œ LEVER S BRAKE ASS`Y "A" HOOK(C) MARK[B] HOOK(B) ´ LEVER T BRAKE ASS`Y Fig. 4-19 Lever Tension Ass’y, Band Brake Ass’y Removal Fig. 4-20 Lever Brake S, T Ass’y Removal 4-11 Toshiba...
  • Page 31: Gear Idle Ass'y Removal

    ´ DISK T REEL add oil in the boss of Lever Idle Œ. "A" Œ LEVER IDLE ´ GEAR IDLE "B" ´ GEAR IDLE HOOK "C" Fig. 4-22 Disk S, T Reel Removal Fig. 4-21 Gear Idle Ass’y Removal Toshiba 4-12...
  • Page 32 DETAIL B Fig. 4-24 Lever Up Down Ass’y Removal SPRING GEAR CENTER ASS'Y GUIDE LEVER UP DOWN ASS'Y RING <GOOD> <BAD> GEAR POST HOOK Fig. 4-23 Holder Clutch Ass’y Removal MAIN BASE Fig. 4-25 Lever Up Down Ass’y Removal 4-13 Toshiba...
  • Page 33: Guide Cassette Door Removal

    Œ GUIDE CASSETTE DOOR Œ LEVER UNIT PINCH ASS`Y HOOK [A] ´ PLATE JOINT ˇ SPRING PINCH DRIVE Fig. 4-26 Guide Cassette Door Removal Fig. 4-27 Lever Unit Pinch Ass’y, Plate Joint, Spring Pinch Drive Removal Toshiba 4-14...
  • Page 34: Fe Head Removal

    2) After reinstalling, check the bottom side of the Post #9 Guide to the top side of Main Base. "A" Œ SPRING #9 GUIDE ´ LEVER #9 GUIDE ASS`Y "B" Fig. 4-29 FE Head Removal Fig. 4-28 Lever #9 Guide Ass’y Removal 4-15 Toshiba...
  • Page 35: Ace Head Removal

    2) Remove the screw Œ. 3) Lift the ACE Head Ass’y ´. Œ SLIDER S ASS`Y Œ SCREW ´ SLIDER T ASS`Y ´ HEAD ACE ASS`Y Fig. 4-31 Slider S, T Ass’y Removal Fig. 4-30 ACE Head Removal Toshiba 4-16...
  • Page 36 1) Release the Hook Œ. 2) Lift the Lever Head Cleaner Ass’y ´. ´ LEVER HEAD CLEANER ASS'Y Œ HOOK SLEEVE-HEAD CLEANER ˇ CYLINDER ASS'Y Fig. 4-32 Plate Ground Deck, Cylinder Ass’y Removal Fig. 4-34 Level Head Cleaner Ass’y Removal 4-17 Toshiba...
  • Page 37 3) Rotate Gear Worm Œ clockwise using screw driver again up to the state of eject mode and then pick out the tape.(Refer to Fig. 4-36) ˇ MOTOR CAPSTAN ASS'Y Fig. 4-35 Damper Capstan,Motor Capstan Ass’y Removal FRAME Fig. 4-37 Toshiba 4-18...
  • Page 38 ∆ 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 ◆ : Add Oil ∆ : Cleaning O : Check and replacement in necessary 4-19 Toshiba...
  • Page 39: Alignment And Adjustment

    5-1-1 Location of adjustment button of remote control POWER X-Point (Tracking Center) Adjustment A.SELECT VC-513 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 40 Alignment and Adjustment 5-1-2 Test point location for adjustment mode setting Short-Circuit for few seconds and release. (Just one time) Fig. 5-2 Main PCB (Top View) Toshiba...
  • Page 41: Mechanical Adjustment

    Fig. 5-3 Location of Tape Transport Adjustment FE HEAD CYLINDER ASS'Y PINCH ROLLER 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 42 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 43 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 44 ) driver to obtain a flat video RF envelope as shown in Fig. 5-11. IDEAL ENVELOPE S HEIGHT TOO HIGH T HEIGHT TOO HIGH S HEIGHT TOO LOW T HEIGHT TOO LOW GUIDE ROLLER S GUIDE ROLLER T Fig. 5-11 Guide Roller S, T Height Adjustment Toshiba...
  • Page 45 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 46 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-512 2, 6, 10, 11, 14, 19, 21 Toshiba...
  • Page 47 6-3 Mechanical Parts (Top Side) - - - - - - - - - - - - - - - - - - - - - - - 6-4 Mechanical Parts (Bottom Side) - - - - - - - - - - - - - - - - - - - - Toshiba...
  • Page 48: Packing Assembly

    Exploded View 6-1 Packing Assembly Y102 Y101 UT01 A702 A702 A701 Toshiba...
  • Page 49: Instrument Assembly

    Exploded View 6-2 Instrument Assembly Toshiba...
  • Page 50: Mechanical Parts (Top Side)

    6-3 Mechanical Parts (Top Side) G001 K490 K502 K530 G555 B473 G530 B474 G450 G510 G680 G420 G480 (OPTIONAL) K546 K250 K240 (OPTIONAL) K248 B575 G681 B410 K350 K110 B440 K182 B448 K340 K330 B452 G546 K470 K140 K188 G527 G520 G070 G060 Toshiba...
  • Page 51: 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 52: Replacement Parts List

    - PACKING PARTS - A701 BY730779 AC69-00039R PACKING CASE;W-512A/TSB,SW2MA+LAMI,-,-,4 A702 BY730464 AC69-00041A CUSHION-F/B;M-656/TSB,EPS,-,-,-,-,- UT01 BY730784 AC59-00019H REMOCON-ASSY;W-513/TSB,TSB,VC-512T,-,-,- Y101 BY634426 AC68-01084A MANUAL USERS;W-512/TSB,-,-,-,MOJO100,-,W Y102 BY634274 AC39-42001J CABLE-RF ASSY;#1365,-,1.2MT,75-75OHM,-,- - INSTRUMENT PARTS - BY730772 AC97-01267C ASSY-PANEL FRONT;HIPS94V2,W-512/TSB,T/BL BY730786 AC64-00485A DOOR-CASSETTE;W-513/TSB,ABS94HB,-,BLK,-, BY730093 AC61-62032A SPRING-MASK;X-9,-,SUS,-,4.4,-,SV-C130 BY730050 AC64-30892B CABINET-TOP;X-9 NO BRAND,SECC,PCM,0.5,36...
  • Page 53 BY730091 AC61-60561A SPRING-FL.LEVER-LR;-,ES,SUS304 WPB,PI2.7 K530 BY730758 AC66-00034A LEVER-FL ARM ASS’Y;TS-10,-,-,-,-,-,-,- K546 BY730086 AC61-50658A GUIDE-CASS. DOOR;X-9,POM,-,NTR,-,- - ELECTRICAL PARTS - BY630154 AC92-00765M ASSY PCB-MAIN;W-512/TSB,TS-10,HI-FI,120V - INTEGRATED CIRCUIT - IC1SS1 BY530021 0604-000186 PHOTO-COUPLER;TR,-,200mW,DIP-4,ST IC1SS2 BY631008 AC14-12006D IC;KA431Z,TO-92,TAPING IC301 BY631153 1204-001755 IC-VIDEO PROCESS;LA71200M,QFP,80P,-,PLAS...
  • Page 54 BY130015 2401-001479 C-AL;470uF,20%,10V,GP,TP,-,- C1SS11 70796098 2301-000129 C-FILM,PEF;100nF,5%,50V,TP,10X9X4.3X5,5m C1SS35 BY130050 2401-003059 C-AL;1000UF,20%,16V,WT,TP,10X16,5 C301 BY130042 2401-000598 C-AL;1uF,20%,50V,GP,TP,4x7,5 C302 BY130031 2203-001721 C-CERAMIC,CHIP;360pF,5%,50V,NPO,TP,2012, C304 70697011 2202-000164 C-CERAMIC,MLC-AXIAL;0.18nF,10%,50V,Y5P,T C305 BY130042 2401-000598 C-AL;1uF,20%,50V,GP,TP,4x7,5 C306 BY130150 2203-000192 C-CERAMIC,CHIP;100nF,+80-20%,50V,Y5V,TP, C307 BY130282 2401-003107 C-AL;47uF,20%,16V,GP,TP,5x7,5 C308 70699092 2401-000918 C-AL;22uF,20%,16V,GP,-,6.3x7,5 Toshiba...
  • Page 55 BY130150 2203-000192 C-CERAMIC,CHIP;100nF,+80-20%,50V,Y5V,TP, C512 BY130019 2203-000126 C-CERAMIC,CHIP;1.2nF,10%,50V,X7R,TP,2012 C513 70795075 2202-000797 C-CERAMIC,MLC-AXIAL;10NF,30%,16V,Y5S,TP, C514 70795075 2202-000797 C-CERAMIC,MLC-AXIAL;10NF,30%,16V,Y5S,TP, C515 BY130150 2203-000192 C-CERAMIC,CHIP;100nF,+80-20%,50V,Y5V,TP, C516 BY130282 2401-003107 C-AL;47uF,20%,16V,GP,TP,5x7,5 C517 BY130150 2203-000192 C-CERAMIC,CHIP;100nF,+80-20%,50V,Y5V,TP, C518 BY130042 2401-000598 C-AL;1uF,20%,50V,GP,TP,4x7,5 C519 72531485 2401-001931 C-AL;220nF,20%,50V,-,TP,4x7mm,5 C520 BY130082 2301-000224 C-FILM,PEF;22nF,5%,50V,TP,7.4x3.9x13mm,5 Toshiba...
  • Page 56 70795075 2202-000797 C-CERAMIC,MLC-AXIAL;10NF,30%,16V,Y5S,TP, C656 BY130207 2203-000844 C-CERAMIC,CHIP;39nF,10%,50V,X7R,TP,2012, C6B01 BY130015 2401-001479 C-AL;470uF,20%,10V,GP,TP,-,- C701 BY130167 2203-000444 C-CERAMIC,CHIP;1nF,10%,50V,X7R,TP,2012,- C702 70796281 2203-000260 C-CERAMIC,CHIP;10nF,10%,50V,X7R,TP,2012 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 BY130049 2401-002144 C-AL;47uF,20%,16V,GP,TP,5x11,5 C805 BY130017 2401-001730 C-AL;10uF,20%,50V,GP,TP,5x11,2.5 Toshiba...
  • Page 57 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 58 70795054 2001-000969 R-CARBON;75OHM,5%,1/8W,AA,TP,1.8X3.2MM R711 70795054 2001-000969 R-CARBON;75OHM,5%,1/8W,AA,TP,1.8X3.2MM R712 70795006 2001-000290 R-CARBON;10KOHM,5%,1/8W,AA,TP,1.8X3.2MM R713 70795054 2001-000969 R-CARBON;75OHM,5%,1/8W,AA,TP,1.8X3.2MM R714 70795006 2001-000290 R-CARBON;10KOHM,5%,1/8W,AA,TP,1.8X3.2MM R715 70795054 2001-000969 R-CARBON;75OHM,5%,1/8W,AA,TP,1.8X3.2MM R716 70795006 2001-000290 R-CARBON;10KOHM,5%,1/8W,AA,TP,1.8X3.2MM R717 70795054 2001-000969 R-CARBON;75OHM,5%,1/8W,AA,TP,1.8X3.2MM R718 70795006 2001-000290 R-CARBON;10KOHM,5%,1/8W,AA,TP,1.8X3.2MM R719 70795054 2001-000969 R-CARBON;75OHM,5%,1/8W,AA,TP,1.8X3.2MM Toshiba...
  • Page 59 BY632001 3404-000165 SWITCH-TACT;12V,50mA,160gf,6x6mm,SPST SW710 BY632001 3404-000165 SWITCH-TACT;12V,50mA,160gf,6x6mm,SPST SW711 BY632001 3404-000165 SWITCH-TACT;12V,50mA,160gf,6x6mm,SPST SW7W17 BY632001 3404-000165 SWITCH-TACT;12V,50mA,160gf,6x6mm,SPST SW7W18 BY632001 3404-000165 SWITCH-TACT;12V,50mA,160gf,6x6mm,SPST TM401 BY634275 AC40-00007A TM-BLOCK;115VD025AP,NTSC-M,115VD025AP,Y VA1SS1 BY634022 1405-001026 VARISTOR;470V,600A,9x7mm,TP XT301 BY633004 2801-003610 CRYSTAL-UNIT;3.579545MHz,8ppm,28-AAA,S,1 XT601 70796216 2801-001384 CRYSTAL-UNIT;14.31818MHz,30ppm,28-AAA,16 XT602 BY633003 2801-003318 CRYSTAL-UNIT;32.768KHz,20ppm,28-AAP,12.5 Toshiba...
  • Page 60 8. Block Diagram Toshiba...
  • Page 61 9-1 Main - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Toshiba...
  • Page 62 PCB Diagram 9-1 Main Toshiba...
  • Page 63 PCB Diagram Toshiba...
  • Page 64: Table Of Contents

    10-6 Display - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 10-8 Toshiba 10-1...
  • Page 65: 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 66: S.m.p.s./Power

    Schematic Diagrams 10-1 S.M.P.S./Power Toshiba 10-3...
  • Page 67: Logic

    Schematic Diagrams 10-2 Logic 10-4 Toshiba...
  • Page 68: A/V

    Schematic Diagrams 10-3 A/V Toshiba 10-5...
  • Page 69: Hi-Fi

    Schematic Diagrams 10-4 Hi-Fi 10-6 Toshiba...
  • Page 70: Tm-Block/Input-Output

    Schematic Diagrams 10-5 TM-Block/Input-Ouput Toshiba 10-7...
  • Page 71: Display

    Schematic Diagrams 10-6 Display 10-8 Toshiba...
  • Page 72 TOSHIBA VIDEO PRODUCTS PTE LTD 438B ALEXANDRA ROAD BLOCK B #06-01 ALEXANDRA TECHNOPARK SINGAPORE 119968...

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