Sony SLV-690HF Operation Manual
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Sony SLV-690HF Operation Manual

H mechanism
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i:I
H MECHANISM
OPERATION
MANUAL
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Questions and answers

Russ Stewart
February 24, 2025

shuttle arms in play position cannot get them to release no tape in machine

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2 comments:
Russ Stewart
February 24, 2025

@Russ Stewart

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Mr. Anderson
May 14, 2025

The issue with the shuttle arms in the play position on a Sony SLV-690HF that prevents them from releasing when there is no tape in the machine could be due to the Cassette IN switch being pressed by the Cassette IN lever, causing the mechanism to assume a cassette is present. This may prevent the shuttle arms from releasing properly.

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Russ Stewart
February 24, 2025

from my first ? how can I move the arms to function right again ?

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1 comments:
Mr. Anderson
February 24, 2025

To fix the arm movement issue on a Sony SLV-690HF, check the following components:

1. Neutrality Arm and RK Bar Movement – Ensure that the neutrality arm and RK bar are moving properly in the direction of the arrow marks as described in the manual.
2. Pendulum Gear and Idler Gear (T) – Verify that the pendulum gear is correctly meshing with the idler gear (T) and rotating as expected.
3. Springs and Arms – Inspect the spring (ACE) compression (part no. 3-960-439-02), arm HC (part no. 3-958-508-02), arm neutrality (part no. 3-960-139-01), and arm pendulum compulsion (part no. 3-960-138-01) for any damage or misalignment.
4. Timing Belt and Cam Gear – Confirm that the timing belt and cam gear are properly engaged and not slipping.
5. Capstan Motor and Loading Gear – Ensure that the capstan motor and loading gear (T) are functioning correctly and not obstructed.

If any part is damaged or out of place, replace or realign it accordingly.

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Russ Stewart
February 24, 2025

are parts available for this machine ?

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1 comments:
Mr. Anderson
February 24, 2025

Some parts for the Sony SLV-690HF VCR are listed, but certain parts, like part #997362382, are no longer made and have no substitute.

This answer is automatically generated

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Summary of Contents for Sony SLV-690HF

  • Page 1 H MECHANISM OPERATION MANUAL...

  • Page 2: Table Of Contents

    Contents 1. Main parts layout diagram ..................2. Tape path ........................3. Cassette IN --_ Loading --_ Stop ................. 4. Stop --_ Playback ...................... 5. Stop --_ Power OFF ....................6. Playback --_ CUE ..................... 7. Playback --_ REV ..................... 8.

  • Page 3: Main Parts Layout Diagram

    1. Main parts layout diagram Pinch roller FE head Top sensor End sensor-- Rotary encoder T/S LED -_ ot.._.Q____.__..,I,_ (cam gea r> ..Cassette IN I_ "_" T reel switch Cam motor (M903) T reel sensor S reel S reel sensor (PH402) (PH401) Fig.

  • Page 4: Tape Path

    2. Tape path ACE head Capstan motor S reel T/S LED T reel Fig. 2-1...

  • Page 5: Cassette In -- Loading

    3. Cassette IN -- Loading --- Stop Cassette loading. Cassette IN lever Right claw is released. Cassette IN switch Left claw is released. Left claw ICassottc hol_e, s,_cs ,n the _ ,rcc, on o_ a _ow ma_k Right claw Leftarm FL driving gear Left arm swings and cassette IN lever is released form I Cassette IN levi...
  • Page 6 (From cassette compartment operation) I Cammotor is rotated. [ Wormwheel is rotated. I Cam gear is rotated. € Drum is Upper/Lower rotated. Soft brake (T) i commu'nication FL driving gear is rotated. is released gear is rotated. form T reel. RKB block is TG8 gear is I rotated through...
  • Page 7 Pendulum Capstan motor (M902) compulsion (Capstan shaft) Pinch roller moves Capstan shaft _ Pinch arm moves in the direction of TG8 arm Pinch roller Shuttle (T) down in the direction _ arrow mark_ and contacts capstan MC roller MC arm gear ofarrowmarkt_..._7/_'_.._ shaft.

  • Page 8: Stop --_ Playback

    4. Stop --* Playback Drum M901) (Capstanshaft) Capstan motor (M902) Press PLAY button. .._...j Pinch roller ID'_m'sr°t_'_n_" Capstan motor is rotated. Pendulum compulsion a rm RKB block is rotated through I timing belt (clutch ON). Pendulum gear is meshed with idler gear (T) and rotated.

  • Page 9: Stop --+Power Off

    5. Stop --+Power OFF Capstan shaft Press power button. '_ If power is ON, it turns OFF automatically about 5 minutes later. • Pinch block is operated and pinch roller Cam motor is rotated. Pinch block moves in the direction of arrow mark O until it is released from capstan shaft.

  • Page 10: Playback Cue

    Drum(M901) Capstan motor (M902) (Capstan shaft) 6. Playback Pinch roller Drum is rotating. Capstan motor is rotated at high speed. RKB block is rotated through timing belt. (clutch ON) RKBbrock Pendulum gear and idler gear I (T) are rotated at high speed. I Pendulumgear T reel IT reel is rotated at high speed.
  • Page 11 7. Playback ---,REW Pendulum Capstan motor (M902) Drum compulsion arm Cam motor is rotated. Drum is rotating. (Capstan shaft) roller [ Worm wheel is rotated. ] Elevator gear gear [ Cam gear is rotated. TG1 arm TG8 gear Main slider slides. Upper/Lower Brake is given to T reel by communication...

  • Page 12: Stop --_ Fast Forward (Ff)

    8. Stop --, Fast foward (FF) •_ When this operation is mode Drumis rotating. Cam motor is rotated. before cassette tape is loaded for playback, CUE mode is started to read tape signal and then tape is set in fast forward mode. I Worm wheel is rotated.
  • Page 13 Capstan motor (M902) Drum (M901) Pendulum TG8 gear (Capstan shaft) Pinch roller compulsion gear Main brake (S) Pinch block Press gear Upper/Lower _mmunication gear Neutrality arm Main brake (T) brake (T) Fixed release Cam motor Pendulum gear T reel (M903) RKB brock Idler Capstan brake...

  • Page 14: Stop -_ Rewind (Rew)

    9. Stop -_ Rewind (REW) •_ When this operation is mode Cam motor is rotated. Drum is rotating. before cassette tape is loaded for playback, REV mode is started to read tape signal and then tape Worm wheel is rotated. is set in rewind mode.
  • Page 15 Drum (M901) Capstan motor (M902) (Capstan shaft) Pendulum TG8 gear Pinch roller compulsion gear Main brake (S) Pinch block Press gear Upper/Lower )mmunication gear LJtrality arm Main brake (T) Soft brake (T) Fixed release. S reel Cam motor RKB brock T reel (M903) Idler gear (S)

  • Page 16: Stop -* Unloading

    !l'!_i p, 10. Stop -* Unloading Eject Drum is rotating. am motor is rotated. I worm w heelisrotated. I am ea s otat I Upper/Lower Main slider slides. communication gear is [ rotated. I C_pa_e7 mOtOr i s .I Pendulum [Reverse brake IBrake is given Brake is given[ Fiaxed...
  • Page 17 Pendulum 0 Main slider moves in the direction compulsion Capstan motor (M902) of arrow mark 0 and RKB arm is Shuttle (S) MC arm (Capstan shaft) pushed up in the direction of Main slider arrow mark • by step @. Shuttle (T) TG8 arm Pinch roller...
  • Page 18 (From unloading) Gear slidc plate slidcs. right/left arm, elay gear is rotated to swing Cassette holder slides. IDoor is opened by form cassette 1N switch. door lever. Left arm FL driving gear Cassette is ejected. Door Cassette IN switch is pressed by Cassette IN lever cassette IN lever.

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