1. Main parts layout diagram

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1 H MECHANSM OPERATON MANUAL SONY

2 Contents 1. Main parts layout diagram Tape path Cassette N _ Loading ---" Stop Stop _ Playback Stop _ Power OFF Playback _ CUE Playback ---"REV Stop _ Fast forward (FF) Stop _ Rewind (REW) Stop ---"Unloading _ Eject M, 2_

3 -_- R17 1. Main parts layout diagram Drum (M901) ACE head Capstan motor (M902) roller FE head End sensor-- T/S LED _ sensor Rotary encoder (cam ) switch Cassette N T reel! S reel (PH40t) (PH402) Fig. 1-1

4 2. Tape path TG4 TG5 ACE head TG3 Drum (M901) TG6 TG7 Capstan motor (M902) FE TG8 TG2 TG1 Pinch roller Top sensor End S reel T/S LED T reel Fig A--

5 3. Cassette N --- Loading --- Stop Cassette loading. [ Right claw is released. [ Cassette \ N sw Left CassettelN J lever [ Left claw is rcleased. ] [Cassetteholderslidesinthedirectionofarrowmark (_)'1 Left claw Right claw FL driving Left swings and cassette N lever is released form [ cassette N switch. Cam molor is rotated. [ i (see Page 7-8) Cassette Cassette holder! [ Worm wheel is rotated. ] Right Gear slide plate [ Cam is rotated. CasseHe Relay [ FL driving is rotated. [ Fig.3-1 [ Gear slide plate slides. ] [ Relay rotatcs to swing right/lefl. [ Cassette holder is retracted to set cassette in DOWN position. Cassette N switch is pressed by cassette N lever. (Continues to loading) - _- G G20

6 0 Pinch roller moves Capstan shaft O Pinch moves in the direction of arrow mark _)and contacts capstan Shuttle (T) compulsion MC roller MC Capstan motor (M902) (Capstan shaft) TG8 Pinch roller of arrow mark _. shaft.. e_! Capstan shaft O,,_! Pinch roller An opening _) is O ' Drum Pinch Press Elevator _,,,/_,..._/_'\ "_ ',_ pinch rollor and _ *"/'_0 '_'1_ L_r-_ given between Press,_'<:_=_=_/' \Press pinch block by \ press cam. O Press and elevator / _ Pinch\ roller is pressed in the direction are rotated in the direction of // of arrow mark _) by the tension of spring. arrow mark 0. / _1 Pinch block moves in the direction of arrow mark O through press cam. TG1 Shuttle Tension reg_ band FL driving RVS brake brake (T) Fig.3-2 Main brake (T) Fixed release S reel RKB brock T reel Soft brake (S) Main slider moves in the direction of arrow mark O, and RKB pushed up by step _) moves in the direction of arrow mark _. dler (S) Neutrality? Capstan motor Loading (T) (M902) \ Capstan brake Drum (M901) Upper/L wa_ ron _ {'--" j Loading (S) gea_ riming belt gfi_nvln 'gg ear - Main slider belt RKB brock i_ RKB moves in the direction of arrow mark i_, then RKB block moves in the direction of arrow mark i_ to i_ change the mesh of pendulum. Cam,_,_ Fixed release Timing belt L_.L Worm wheel RKB brock dler (S) RKB S reel Fig.3-3 Fig.3-4 H3 -,o- H4

7 4. Stop Playback Drum (M901) Capstan motor (M902) (Capstan shaft) Press PLAY button. ] roller Drum is rotating. ] Capstan motor is rotated, l RKB block is rotated through dining belt (clutch ON). compulsion is meshed with dler (T) and rotated. [ T reel is rotated. J f [ Pinch roller is rotated. J dler (S) T reel RKB brock dler (T) Capstan motor (M c02) N /- Tension wheel t Timing belt RKB brock --_ k '...._/_ Tre_l_,dlerg_; P_-nd! ear(s) J- Fig ll

8 5. Stop -- Power OFF Press power button. _ f power is ON, it turns OFF automatically about 5 minutes later. Capstan shaft is rotated, 0 Pinch block is operated and pinch roller moves in the direction of arrow mark until it is released from capstan shaft, block Worm wheel is rotated. Cam is rotated. Pinch brock Soft brake (T) s operated. Pinch-block moves in the directionof arrow mark and pinch roller is released from capstan shaft. communication is rotated. t TG8 is rotated. [ Press is rotated. [ Elevator is rotated. ] L Main brake (S/T) is operated. [ Brake is given to S/Freel. Main slider slides.- ] RKB is ] Neutrality pressed, compulsion [is operated. is operated. moves down. RKB block 1 RKB block becomes free. [ is released from T reel. ] Fixed release is operated. tenslon becomes weak to Tension make Sreel regulator brake band weak. Press, O Press is rotated in the direction of arrow mark 0 and pinch block pin pushed to press cam is released from cam while pinch block moves in the direction of arrow mark _. Fig. 5-2 Drum (M901) Capstan motor (M902) Elevator (Capstan shaft) / Pinch roller/ Pinch Capstan motor Capstan brake Drum (M901) Tension band _/--//_/ //Pinch block o _/_ j Press _/ J --, TG8 _l_--_ "_'_" communication commu Cam Main slider Fixed release S _/-" Solt brake(t)... _-"_'-'-'- --_ Main brake (S) RKB brock Main brake (T) compulsion Neutrality Fig. 5-1 Cam moto Worm wheel dler (T) RKB Fixed release H H8

9 6. Playback CUE Drum (M901) Capstan motor (M902) (Capstan shaft) Pinch roller Drum is rotating. Capstan motor is rotated at high speed. through timing belt. RKB block is rotated (clutch ON) and idler (T) are rotated at h gb speed. T reel is rotated at high speed. [! f Pinch roller is rotated 1 at high speed. dler (S) T reel dler (T) _ Difference from (Stop -- Playback) (_) Capstan motor is rotating at high speed. (_) is meshed with idler (T) from the beginning. Capstan motor (Mi02) N Tension Timing belt RKB brock T reel dler (T) Fig

10 7. Playback -,- REW is rotated. ] Drum is rotating. Drum compulsion Capstan motor (M902) (Capstan shaft) i ] Wonn wheel is rotated. [ [ Cam is rotated. [ Brake is given to T reel by reverse brake ann. Main slider slides. TG1 rg8 ;ommunication Fixed release / Brake is given is operated: l [ to softs brake reel by(s). compulsion ann is operated. l Brake is given to [ S winding ann is capstan motor by operated to slightly capstan brake. ] rotate S reel. ] S brake ( TG1 tension ) \ becomes weak. S reel T reel is free on [.Capstan motor is rotated J S reel only. lin reverse at high speed. Soft brake (S) dler (S) RKB brock S reel RKB block is rotated ] through timing belt. (clutch ON)! Capstan Capstan brake Tension wheel motor (M902) is meshed with idler (S) and rotated. slider SrWi_ing f belt S reel is rotated in reverse at high speed. Pinch roller is rotated in reverse at high RKB Main slider"- When main slider moves in the direction of arrow mark _), S winding pressed by main slider cam moves in the direction of arrow mark(_ and S reel is rotated a little in the direction of arrow mark. speed. dler, S reel Fixed release Fig. 7-1 Fig. 7-2 Hll -18- H12

11 8. Stop ---, Fast foward (FF) When this operation is mode is rotated. ] before cassette tape is loaded for / playback, CUE mode is started J_ to read tape signal and then tape T is set in fast forward mode. [ Worm wheel is rotated. Drum is rotating. ] Brake is given to T reel by soft Lbrake03. communication is rotated. TG8 is rotated. i Fixed release is operated to make TG l tension weak. [ Cam is rotated. Main slider slides. ] Brake is given to capstan motor bycapstan lbrake. _rak0isgiveo _rakeisgiveo to S reel by main brake (S). [ to T reel by main brake (T). ] Neutrality is operated. set in clutch OFF by RKB KB blockis l alto. Press is rotated.,r Trigger slides. lever [compulsion is operated. released from Pinch capstan miler shaft. is in the center between is locked J S reel and T reel. ] Capstan brake is Main brake <S) Main brake (T) released from [ is released ]is released capstan motor, from S reel. J [ form T reel. Neutrality operated is again. compulsion is operated. ( ;e?d_lurtgere_a;. is free n ) Capstan motor is rotated at h gh speed. RKB block is rotated through timing belt.! is meshed with idler 03 and rotated. T reel is rotated at high speed. m

12 Drum (M901) Capstan motor (M902) TG8 (Capstan shaft) Pinch roller Elevator Main brake (S) block eutrality brake (T) (T) Fixed release S re/el T reel RKB brock dler Capstan brake Drum (M901) Capstan motor Tension wheel (M902) communication Main slider Cam =be_ RKB Main brake (S) Worm wheel dler (T) Trigger lever RKB Fixed release T reel dler Fig _- H15 - _- H16

13 9. Stop --" Rewind (REW) _ When this operation is mode [ n before cassette tape is loaded for playback, REV mode is started to read tape signal and then tape is set in rewind mode. is rotated. Worm wheel is rotated. Drum is rotating. [ "_eis_veo_ll communication T reel by soft ] is rotated. brake 03. ] TG8 is rotated. Fixed release is operated to make TG 1 tension weak. Cam is rotated. Main slider slides. Brake is given to capstan motor by capstan brake. _rakeis_ivon orakeisgiven to S reel by to T reel by man brake (S). main brake (T). Neutrality ann is operated. RKB block is set in clutch OFF by RKB. Press rotated. is compulsion is operated. Pinch roller is released from capstan shaft. f 1 _ Trigger slides. lever it is locked in the center between S reel and T reel. Capstan brake is released from capstan motor. Main brake (S) is released from S reel. Main brake (T) isreleased ][formtr_l Neutrality ann is operated again. compulsion is operated. Capstan Motor is rotated in reverse at high speed. i ( eende_lur_gre2;.isfree on ) RKB block is rotated through timing belt. - l is meshed with idler (S) and rotated. t S reel is rotated in reverse at high speed. J

14 com Drum (M901) \ Capstan motor (M902) (Capstan shaft) TG8 Pinch roller Main brake (S) h block ' Main brake (T) (T) Fixed release S reel RKB brock T reel dler (S) Capstan brake Drum (M901) Capstan motor (M902) Tension wheel co belt Cam erlever RKB brock Main brake (S) Worm wheel RKB dler (T) _ear (S) S reel Fixed release Fig _- H19 - _- H20

15 10. Stop Unloading Eject is rotated. ] Dram is rotating. [ Worm wheel is rotated. [ Cam is rotated. ] Brake is given to capstan [motorby Lcapstanbrake. S winding operated _ S reel a little. Main slider slides. Brake is given Fiaxed is rotate Brake is given to S reel by release to T reel by soft brake (S). is operated, man brake (T). [w la unloading. J Tension regulator band releases the brake from S reel. Loading (S) is rotated. Loading (T) is rotated. compulsion is operated. ' is free on S reel only. 1 Reverse brake gives brake to T reel landis released immediately. Upper/Lo.wer commumcatlon rotated. is ]_ess isrotated ] released from capstan motor. rotated. [Pinch rollermoves upj Capstan motor is rotated. RKB block is rotatedthrough timing belt. (dutch ON) -1 meshed with idler is (S) and rotated. Shuttle unloading, (S) ] Shuttle unloading. (T) ] cleaning by Drum MC roller. ] [ TG8 ann unloading. ] [ S reel is rotated. J ( Tape is wound into cassette. / Capstanmotor.l Main brake (T) ] is released from T reel. RKB block is set in clutch OFF by RKB. i, FL driving Brake is is [ given to [ soft brake Treelby (T). Cassette operation. OUT (see Page 31, 32)

16 Shuttle (S) compulsion Capstan motor (M902) \ MC (Capstan shaft) Drum (M901) _Shuttle (T) TG8 Pinch roller Elevator in) Main slider moves in the direction of arrow mark O and RKB is pushed up in the direction of arrow mark 0 by step (_). Main slider TG1 Pinch RKB brock TG8 Tension regulator band S reel T reel communication FL driving RVS brake Soft brake (T) Main brake (T) riming belt OWhen RKB moves in the direction of RKB brock 7 arrow mark 0, RKB block moves in the, ] / J direction f arr w mark 0 t change /! [ ' _ /10 the mesh ofpenduum i, 1 1 ','.'l,- i' [ 7 ing Oelt Soft brake (S) dler (S) RKB brock Fig Capstan motor (M902) Capstan brake Shuttle (T) Drum (M901) Shuttle (S) slider 0 Pinch roller moves up in the direction of arrow mark 0. shall 0 Pinch moves in the direction of arrow mark 0 and pinch roller is released from capstan shaft. haft FL dr v n! Pinch roller Press Cam i ed release Elevator Worm wheel RKB dler (S) S reel Press and elevator are rotated in the direction of arrow mark 0. 0 Pinch block pushed by press cam moves in the direction of arrow mark 0. Fig 10-1 Fig

17 (From unloading) Doorlever Gear slide plate slides. Relay right/left. is rotated to swing Cassette N level Cassette N! Left Door is opened by door lever. Cassette N lever is released form cassette N switch. [ [ Cassette holder slides. Cassette is ejected. 1 1 Left <> FL driving Cassette N switch is pressed by cassette N lever. Cassette N level stops. ] Cassette holder Right Gear slide plate Cassette Relay Fig l

i:i H MECHANISM OPERATION MANUAL

i:i H MECHANISM OPERATION MANUAL i: H MECHANSM OPERATON MANUAL S 1-16 Contents 1. Main parts layout diagram... 3 2. Tape path... 4 3. Cassette N --_ Loading --_ Stop... 5 4. Stop --_ Playback... 11 5. Stop --_ Power OFF... 13 6. Playback