Video8 B MECHANISM OPERATION MANUAL m MECHANISM DECK A18
CONTENTS 1. Main parts layout diagram 2. Operation of main 3. Operation of 4. parts each part Driving of LS chassis 3-2. Driving of pinch 3-3. Driving of tension 3-4. Driving of S reel 3-5. Driving of T ratchet in each 4-1. Cassette 4-2. STOP _ 4-3. ............................................................................ .............................................................................. 3-1. Operation ....................................................
1. Main parts layout diagram REC proof switch (S001) T reel Cassette down switch (S002) LED Sensor Capstan (M902) S reel motor Sensor S Pinch roller Gooseneck Drum (M901) Loading (M903) motor Fig.
2. Operation of main parts Loading moves in the direction of Tension regulator plate 1 arrow. motor (M903) rotates. ] [ Worm shaft and gear A rotates. [ [ [ Rotary encoder [ rotates. Cam gear rotates. [ f arrow. M slider slides in the direction of [ direction arrow. moves in the Pinch pressof plate Loading ] of arrow. I direction L arm moves in the direction of arrow.
3. Operation 3-1. Driving of each part of LS chassis Cam gear rotates. 1 ! LS arm moves. I I M slider moves in ® direction after first slightly moving in O direction. Pinch press plate moves inOdirection after first slightly moving int_) direction. r I LS chassis moves. i TG4 moves in the | direction of arrow. J I I TG1 moves m the | direction of arrow. 1 Claws on stoppers S and T are released from locked position and guide S (TG2) and guide T (TG3) move in the direction of arrow.
GL slider @ GL arm •Pinch press plate Cam gea= LS arm M slider Fig. 3-1 Guide T (TG3) Pinch roller Guide S (TG2) TG1 uide rail arm Stopper T Stopper S I Viewed from the rear. I Fig.
3-2. Driving of pinch roller M slider moves in the direction of arrow. ! Pinch press plate moves in the direction of arrow (_). ,! Shaft of pinch roller arm is pushed with pinch press plate at!_)portion. Pinch roller moves in the direction of arrow to be pressed with capstan shaft.
Pinch press plate M slider Fig. 3-3 Shaft of pinch roller "-Torsion spring (pinch) press plate Fig.
3-3. Driving of tension regulator Rotary encoder rotates. and TG1 [ | TG1 moves in the direction of arrowf_)as LS chassis moves. I I TG1 shaft touches on!_)portion, I then it moves in the direction of 1 arrow_. I Tension regulator plates 2 i and 1 move in@direction, ! ! TG1 further moves in the direction of arrow(fi). [ I ! I TG1 moves in(_)direction shortly after it moves int_) direction. I TG1 moves inl_)direction.
Tension plate 2 Rotary encoder (S901) reg O slider Tension plate 1 regulator Fig. 3-5 TG1 _1_(_ TG1 moves arrow(_as Tension regulator in the direction LS chassis band regulator plate 2 ® "-Tension regulator plate 1 Fig. 3-6 of moves.
3-4. Driving of S reel and S ratchet I IM slidergear moves in the direction as cam rotates. I of arrow [ ,L S ratchet shaft touches M slider onl_ portion, then S ratchet moves in the direction of arrowl_). 1 S ratchet release plate moves in the direction of arrowt_). * With this operation of S reel the brake is released.
Fig. 3-7 S reel S ratchet release plate Tension spring S ratchet (_) Tension spring S ratchet shaft _. M slider Fig.
3-5. Driving of T ratchet and T soft gear arrow(_), in no time followed by ] M slider moves in the direction of [ movement in the reverse direction. ] ! T soft claw and T soft spring move in the direction of arrow(_), then, immediately returned. I M slider pushes T ratchet only) portion and T ratchet moves in the direction of arrow!_), then, immediately returned. M slider again moves in the direction T soft claw and T soft spring move in the direction of arrow_). of arrow_).
T soft claw T ratchet slider © T soft g Tension spring T soft spring Fig. 3-9 T reel ratchet "T soft spring T soft 'T soft gear M slider Fig.
11 Operation in each mode 4-1. Cassette IN _ STOP Drum (M901) rotates. [ Capstan motor (M902) rotates. [ Change timing gear andbelt. relay gear rotate through T reel slightly direction of arrow. rotates in the I Gooseneck gear moves in the direction of arrow _) to gear into S reel. [ i [ I Loading motor (M903) rotates. Capstan motor (M902)stops. J I Rotary encoder and cam gear rotate via gear A. H f [ LS ann moves in the direction of arrow.
® Loading motor (M903) Drum (M901) HC roller Capstan motor (M902) GL slider Rotary encoder belt Pinch press plate Tension reg plate 1 Cassette compartment Tension reg plate 2 * When cassette compartment is depressed in the direction of arrow_, claw on@portion in cassette compartment touches EJ arm at portion so that EJ arm moves in the Cassette down switch (S002) , '_ locked cassette direction of arrowO. compartment This operation and is turns ON cassette down switch (S002).
4-2. STOP PB I Drum (M901) rotates. I Loading motor (M903) rotates. [ 1 gear A. I rotate otary via encoder and cam gear Tension regulator plates 1 and 2 [ move in the direction of arrow (_)[ in conjunction with the rotation I of rotary encoder. [ I M slider slides in the direction of arrow, allowing pinch press plate to move in the direction of arrow. ,! ITG1 arrow. moves in the direction of * This operation corrects the looseness in tape.
Loading (M903) Drum (M901) motor HC roller Capstan motor (M902) GL slider Gear © Rotary encoder Pinch press plate M T (TG3) TG1 Guide S (TG2) Pinch roller reel Tension regulator band ratchet S ratchet release plate S reel S ratchet / LS arm boss Loading motor (M903) Guide @z_ Gooseneck gear T soft spring T soft gear T soft claw Drum (M901) Capstan / motor (M902) S (TG2) / iX TG1 HCroller / TG4 GLslider / Tension regulator band S ratchet--------- / T ratchet S ratchet
4-3. STOP REC -- Drum (M901) rotates. I Loading motor (M903) rotates. [ I rotate otaryvia encoder gear A.and cam gear 1 Tension regulator plates 1 and 2 [ move in the direction of arrow (_)] in conjunction with the rotation [ of rotary encoder. [ M slider slides in the direction of arrow, allowing pinch press plate to move in the direction of arrow. TG1 moves in the direction of arrow. Pinch roller moves in the direction of arrow to contact with capstan shaft.
Loading motor (M903) Capstan motor (M902) Drum (M901) \ i Gear A Rotary encoder_ ©) J __ _Timing belt Tension regulator plate 1 J / Tension regulator Pinch press plate plate 2 J Cam gear" Change gear M slider Relay gear Fig. 4-5 Mechanism Loading motor (M903) chassis assembly Drum (M901) Capstan motor (M902) Pinchroller TG1 Tension regulator band S ratchet Gooseneck gear S _el Fig.
4-4. STOP FF [ I Drum (M901) rotates. I Loading motor (M903) rotates. [ | Rotary encoder and cam gear rotate via gear A. Tension regulator plates 1 and 2 ] move in the direction of arrow (_)1 in conjunction with the rotation [ of rotary encoder. [ TG1 moves in the direction of arrow. * T lai_ °i_ration looseness co_ects ] I I M slider slides in the direction of arrow, allowing pinch press plate to move in the direction of arrow.
Loading motor (M903) Drum (M901) Capstan motor (M902) Gear Rotary belt Tension regt plate 1 Tension regulator plate 2 Pinch press plate Cam Change gear M slider Relay gear Fig. 4-7 Mechanism Loading motor (M903) chassis assembly Drum (M901) Capstan motor (M902) Pinch roller TG1 Tension regulator band ratchet S reel Fig.
Loading motor (M903) Drum (M901) Capstan motor (M902) Gear Rotary encoder belt Tension reg plate 1 Tension reg plate 2 press plate Cam g Change gear M slider Relay gear Fig. 4-9 Mechanism Loading motor (M903) chassis assembly Drum (M901) Capstan motor (M902) Pinch roller TG1 Tension regulator band ratchet gear S Fig.
4-5. STOP REWIND Drum (M901) rotates. Loading motor (M903) rotates. [ / Rotary encoder and cam gear / rotate via gear A. J Tension regulator plates 1 and 2 [ move in the direction of arrow (_)[ in conjunction with the rotation of rotary encoder. TG 1 moves in the direction of arrow. M slider slides in the direction of arrow, allowing pinch press plate to move in the direction of arrow.
Loading motor (M903) Drum (M901) Capstan motor (M902) © Rotary g belt Tension plate 1 regulator Tension plate 2 regulator ch press plate Cam g M slider Change gear Relay gear Fig. 4-1 1 Mechanism Loading motor (M903) chassis assembly Capstan Drum (M901) motor (M902) Pinch roller TG1 Tension band regulator RVS arm S ratchet I S reel Fig.
4-6. PB _ CUE ! Capstan motor (M902) rotates at the high speed. [ high speed via timing belt, Gooseneck at the change gear gear and rotates relay gear. [ I t m l T reel rotates at the high speed. I Pinch roller rotates at the high speed. [ l * This operation winds tape around T reel. * This operation speed running allows high for tape.
Drum (M901) Capstan motor (M902) g belt Change gear Relay gear Fig. 4-13 Mechanism chassis Drum (M901) assembly Capstan motor (M902) Pinch roller gear Fig.
4-7. PB REVIEW rotates the high speed.reversely Capstan atmotor (M902) [ relay gear reversely rotates at the I Timing belt, change gear and I high speed. [ TG1 slightly moves [ [ in the direction of arrow. I I Gooseneck gear moves in the direction of arrow to contact with S reel, then, rotates in the reverse direction at the high speed. I S reel rotates direction at thein high the reverse speed. * This operation winds tape around S reel.
Capstan motor (M902) belt Change gear Relay gear Fig. 4-15 Mechanism chassis assembly Drum (M901) Capstan TG1 I ./ / motor (M902) Pinch roller i Tension regulator band Gooseneck S reel Fig.
4-8. PB_----_PAUSE Capstan motor (M902) stops. [ Timing belt, change gear and relay gear stop their rotation. I I f ! ! Gooseneck gear and T reel stop rotating. NOTE • Drum continues rotating without stopping the rotation. [ Pinch roller stops rotating. * This operation stops tape running.
Capstan motor (M902) Change gear Relay gear Fig. 4-17 Mechanism chassis assembly Drum (M901) Capstan motor (M902) Pinch roller \ Gooseneck gear m_ L_f reel Fig.
Loading (M903) motor Drum (M901) Capstan motor (M902) Gear Rotary Timing belt Tension plate 1 regulator Tension plate 2 regulator Pinch press plate GL slider Cam gear Change M slider Fig.
Drum (M901) Loading motor (M903) Guide HC roller Capstan motor (M902) Guide T (TG3) S TG1 nch roller Gear Tension reg band RVS S Gooseneck S reel gear T soft spring r reel T soft claw T soft gear Loading motor (M903) Drum (M901) Capstan motor (M902) TG1 =h roller / S reel T reel
® Cassette compartment arrow(_)to push claw on(_)portion * in EJ cassette arm moves in the direction compartment by EJ of arm at@portion so that the claw is releases. When released the i i , lock, the wholeis cassette compartment lifted up in the direction of arrow(_). * When EJ arm moves in the direction of arrow@, cassette down switch is brought into action to stop drum (M901). capstan motor (M902) and loading motor (M903). Fig.
