IMPORTANT SERVICE GUIDE ♦ MODE SWITCH (PROGRAM SWITCH) ASSEMBLY POINT 1) When installing the ass’y deck on the Main PCB, be sure to align the assembly point of mode switch. ASSEMBLY POINT (ALIGN TWO ARROWS) Fig. 1 ♦ HOW TO EJECT THE CASSETTE TAPE (If the unit does not operate on condition that tape is inserted into housing ass’y) 1) Turn the Gear Worm Œ...
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Alternatively, wear a discharging Wrist-strap device. (Be sure to remove it prior to applying power--this is an electric shock precaution.) Samsung Electronics...
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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. Samsung Electronics...
3) When replacing the cylinder ass’y, be sure to adjust the “X-Point” and “Head switching adjustment”. 4) Among Samsung VCR remote control used for adjustment as a accessory, only the remote control that has figures buttons (0 ~ 9) is available for all adjustment regardless of chassis.
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Alignment and Adjustment 2-1-2 SW718 location for adjustment mode setting PRESS Fig. 2-2 Main PCB (Top View) Samsung Electronics...
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Alignment and Adjustment 2-1-3 SW775 (TEST) location for adjustment mode setting (SV-657F/657B/657X/657GX Only) PRESS Fig. 2-3 Function PCB (Top View) Samsung Electronics...
2) Press the “TEST” button on Main PCB/Function PCB 6) Turn the Power off. to set the adjustment mode. (See Fig. 2-2 and 2-3) 3) Press the “5” button of remote control then adjustment is operated automatically. (See Fig. 2-1) Samsung Electronics...
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 Samsung Electronics...
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Schematic Diagrams 6-1 S.M.P.S. PWR OFF Œ PWR ON ´ Œ Q1SR01-COLLECTOR POWER OFF/380Vp-p ´ Q1SR01-COLLECTOR POWER ON/400Vp-p Samsung Electronics...
CHROMA RECORDING - - - - - CHROMA PLAYBACK VIDEO SIGNAL IN/OUT LUMINANCE RECORDING - - - - - LUMINANACE PLAYBACK AUDIO PROCESS IN - - - - - AUDIO PROCESS OUT Ú Æ Ô ı Ò Samsung Electronics...
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Schematic Diagrams IC301 VOLTAGE TABLE WAVEFORM IC301 LA71750M Ô IC301-100 Ú IC301-88 PLAY STOP PLAY STOP MODE MODE REC/1.5Vp-p REC(LP)/2.5Vp-p IC301 LA71750M IC301 LA71750M 19.0 IC301-65 Æ IC301-94 PB/2.1Vp-p REC(SP)/3.0Vp-p Ò IC301-21 ı IC301-11 PB/320mVp-p REC/102Vp-p Samsung Electronics...
AUDIO PROCESS (IN) - - - - - AUDIO PROCESS (OUT) VIDEO PROCESS (IN) - - - - - VIDEO PROCESS (OUT) L OUT R OUT TU V OUT R IN TU V IN L IN AV V IN AV V OUT 6-16 Samsung Electronics...
1-1-1 Top View Œ ´ ˇ ¨ ˆ Ø Fig. 1-1 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 Samsung Electronics...
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´ 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 Samsung Electronics...
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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 Samsung Electronics...
Lever FL Cassette-R ´ at disassembling and reassembling. Fig. 1-5 Lever FL Door Removal RAIL [B] Œ HOLDER FL ´ LEVER FL CASSETTEE -R CASSETTEE ASS`Y "A" BOSS [A] Fig. 1-4 Holder FL Cassette Ass’y Removal Samsung Electronics...
TIMING POINT 3 Fig. 1-14 Gear Loading Drive, Slider Cam, Lever T, S Load Ass’y Removal PIN A PIN C PIN D PIN B ˇ SLIDER CAM Fig. 1-15 Gear Loading Drive, Slider Cam, Lever Load S, T Ass’y Assembly Samsung Electronics...
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Main Base to the Mark[B]. ˇ BAND BRAKE ASS`Y ´ LEVER TENTION ASS`Y Œ SPRING TENTION LEVER Fig. 1-16 Lever Pinch Drive, STOPPER Lever Tension Drive Removal "A" MARK[B] Fig. 1-17 Lever Tension Ass’y, Band Brake Ass’y Removal Samsung Electronics...
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´ 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. 1-19 Gear Idle Ass’y Removal Fig. 1-18 Lever Brake S, T Ass’y Removal 1-10 Samsung Electronics...
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Center Ass'y as shown in detail B. ´ DISK T REEL Œ WASHER SLIT ´ HOLDER CLUTCH ASS`Y Fig. 1-20 Disk S, T Reel Removal DETAIL A <BAD> SPRING <GOOD> DETAIL B SPRING <BAD> <GOOD> Fig. 1-21 Holder Clutch Ass’y Removal Samsung Electronics 1-11...
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´ GEAR CENTER ASS`Y Fig. 1-24 Guide Cassette Door Removal Fig. 1-22 Lever Up Down Ass’y Removal GEAR CENTER ASS'Y GUIDE LEVER UP DOWN ASS'Y RING GEAR POST HOOK MAIN BASE Fig. 1-23 Lever Up Down Ass’y Removal 1-12 Samsung Electronics...
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Œ LEVER UNIT PINCH ASS`Y Œ SPRING #9 GUIDE ´ LEVER #9 GUIDE ASS`Y "B" ´ PLATE JOINT ˇ SPRING PINCH DRIVE Fig. 1-26 Lever #9 Guide Ass’y Removal Fig. 1-25 Lever Unit Pinch Ass’y, Plate Joint, Spring Pinch Drive Removal Samsung Electronics 1-13...
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. 1-27 FE Head Removal Fig. 1-28 ACE Head Removal 1-14 Samsung Electronics...
2) When reinstalling, Don't push down too much on Screw Driver. Œ 3 SCREWS Fig. 1-29 Slider S, T Ass’y Removal ´ PLATE GROUND DECK ˇ CYLINDER ASS'Y Fig. 1-30 Plate Ground Deck, Cylinder Ass’y Removal Samsung Electronics 1-15...
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Base. There should have no gap between the head of screws and the top side of Main Base. After reinstalling, adjusting the tape transport system again. Œ 3 SCREWS Fig. 1-31 Belt Pulley Removal ´ MOTOR CAPSTAN ASS'Y Fig. 1-32 Damper Capstan,Motor Capstan Ass’y Removal 1-16 Samsung Electronics...
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.1-35) SLEEVE-HEAD CLEANER FRAME Fig. 1-34 Post #8 Guide Ass’y Removal Fig. 1-36 Samsung Electronics 1-17...
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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 1-18 Samsung Electronics...
Fig. 2-1 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. 2-2 Tape Travel Diagram Samsung Electronics...
Fig. 2-3 Location of ACE Head Adjustment Screw ADJUSTMENT 1) See “2. Alignment and Adjustment” for ACE Head position (X-Point) adjustment. AUDIO HEAD VIDEO HEAD 0 ~ 0 .25 mm CONTROL HEAD Fig. 2-4 ACE Head Height Adjustment Samsung Electronics...
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) driver to obtain a flat video RF envelope as shown in Fig. 2-8. 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. 2-8 Guide Roller S, T Height Adjustment Samsung Electronics...
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. Samsung Electronics...
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