Seite 1
FILE NO. 120-200221 SERVICE MANUAL VIDEO CASSETTE RECORDER V-752EW FEB, 2002 Downloaded from www.Manualslib.com manuals search engine...
Seite 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 Downloaded from www.Manualslib.com manuals search engine...
Seite 3
Alternatively, wear a discharging Wrist-strap device. (Be sure to remove it prior to applying power--this is an electric shock precaution.) Toshiba Downloaded from www.Manualslib.com manuals search engine...
Seite 4
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 Downloaded from www.Manualslib.com manuals search engine...
Disconnect the CN708/CN710 from the Ass'y PCB-Main and then lift the Ass'y Function PCB up. ´ RELEASE 3 HOOKS (Bottom View) Fig. 4-2 Ass’y Front Panel Removal CN708 CN701 Fig. 4-3 Ass’y Front A/V PCB Removal Toshiba Downloaded from www.Manualslib.com manuals search engine...
Seite 30
’ ASS'Y-DECK Ø FLAT CABLE ˝ ASS'Y MAIN-PCB Œ 2 SCREWS 2 SCREWS ˆ RELEASE 1 TAB ASSEMBLY POINT ASSEMBLY POINT (ALIGN TWO ARROWS) (ALIGN TWO ARROWS) PUSH ´ BRACKET-FRAME Fig. 4-4 Chassis Removal Toshiba Downloaded from www.Manualslib.com manuals search engine...
Seite 31
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 Downloaded from www.Manualslib.com manuals search engine...
Seite 32
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 Downloaded from www.Manualslib.com manuals search engine...
Seite 33
´ 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 Downloaded from www.Manualslib.com manuals search engine...
Seite 34
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 Downloaded from www.Manualslib.com manuals search engine...
Seite 35
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 Downloaded from www.Manualslib.com manuals search engine...
Seite 36
LOADING MOTOR CYLINDER CONNECTING PART CONNECTING PART "B" ¨ DAMPER ´ CONNECTOR WAFER CAPSTAN "A" Œ GEAR WORM WHEEL "C" Fig. 4-13 Gear Worm Wheel Removal ˇ CONNECTOR WAFER Fig. 4-14 Cable Flat Removal Toshiba Downloaded from www.Manualslib.com manuals search engine...
Seite 38
Fig. 4-18 Gear Loading Drive, Slider Cam, Lever T, S Load Ass’y Removal PIN A PIN D PIN C PIN B ˇ SLIDER CAM Fig. 4-19 Gear Loading Drive, Slider Cam, Lever Load S, T Ass’y Assembly Toshiba 4-10 Downloaded from www.Manualslib.com manuals search engine...
Seite 39
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 Downloaded from www.Manualslib.com manuals search engine...
Seite 40
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 Downloaded from www.Manualslib.com manuals search engine...
Seite 41
´ 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 Downloaded from www.Manualslib.com manuals search engine...
Seite 42
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 Downloaded from www.Manualslib.com manuals search engine...
Seite 43
´ 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 Downloaded from www.Manualslib.com manuals search engine...
Seite 44
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 Downloaded from www.Manualslib.com manuals search engine...
Seite 45
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 Downloaded from www.Manualslib.com manuals search engine...
Seite 46
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 Downloaded from www.Manualslib.com manuals search engine...
Seite 47
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 Downloaded from www.Manualslib.com manuals search engine...
Seite 48
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 Downloaded from www.Manualslib.com manuals search engine...
COUNT/TR CLR/RST F.ADV TIMER MENU NVRAM Option Setting PLAY CURSOR SLOW PAUSE / S T I L L STOP SP/LP PROG. AUDIO TV/VIDEO Head Switching Adjustment A.DUB SAT.MONI. SAT.CONT. PICTURE VT-752EW Fig. 5-1 Toshiba Downloaded from www.Manualslib.com manuals search engine...
Seite 50
Alignment and Adjustment 5-1-2 SW713 location for adjustment mode setting SW701 SW703 SW713 PRESS Fig. 5-2 Main PCB (Top View) Toshiba Downloaded from www.Manualslib.com manuals search engine...
Seite 51
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 Downloaded from www.Manualslib.com manuals search engine...
Seite 52
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 Downloaded from www.Manualslib.com manuals search engine...
Seite 53
CH-2 probe to TP601 (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 waveform is maximum. 6) Turn the Power off. Toshiba Downloaded from www.Manualslib.com manuals search engine...
Seite 54
) 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 Downloaded from www.Manualslib.com manuals search engine...
Seite 55
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 Downloaded from www.Manualslib.com manuals search engine...
Seite 73
TOSHIBA VIDEO PRODUCTS PTE LTD 438B ALEXANDRA ROAD BLOCK B #06-01 ALEXANDRA TECHNOPARK SINGAPORE 119968 Downloaded from www.Manualslib.com manuals search engine...