Service Manuals, User Guides, Schematic Diagrams or docs for : panasonic Audio AR2 Mech Viewing PDF_VIEW_DATA EU AR2 TG PVAccel

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PVAccel


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    Cassette Mechanism


                  Semi-auto Cassette
     Mechanism Operation Description




                            AR-2




Technical Support Section, Quality Promotion Department, Audio Division
                                              Contents
                                                                                                      page
Mechanism bottom view and part names ................................................... 1
Mechanism top view and part names ......................................................... 2
Drive system............................................................................................... 3
Operation of the main gear from the stop mode to the play mode ............. 4
Switching between forward and reverse during the play mode .................. 5
Operation of the forward/reverse lever and forward/reverse rod ................. 6
Operation of the main gear and forward/reverse lever................................ 6
Head switching operation/Pinch roller switching operation......................... 7
Operational relationship between head substrate and main gear .............. 8
Reel base mode switching operation
       (stop, forward-play, and reverse-play modes) ..................................... 9
Relationship between take-up arm, main gear,
       and reel base gears (during play mode) .......................................... 10
Reel base switching mode (fast-forward, rewind, and stop modes) ......... 11
Eject operation (stop mode) ..................................................................... 12
Eject operation (cassette cover open) ...................................................... 13
Block diagram ........................................................................................... 14
Timing chart ............................................................................................. 15
Fast Forward (FF) and Rewind (REW) ..................................................... 16
Assembly of parts at top of mechanism ...........................................17 ~ 19
Assembly of parts at bottom of mechanism ..................................... 20 ~ 23
Mechanism bottom view and part names


                                                                                      Switch substrate


                                                                                                            13   Take-up lever
               7   Plunger (solenoid)

                                 3   Trigger lever
                                                                                     6   Fast-forward                12   Thrust spring
                                                                                         relay gear
                                                      2
      4   Trigger lever spring                                                                                             10 Take-up   belt
                                                     Eject lever
                                                                                         Reel base gear A                     9   Take-up arm

                     1   Forward/reverse lever



                                                                                                           Reel base gear B

 11 Forward
                                                                                                   5   Forward/reverse lever spring
              flywheel
                                              8   Main gear                              Chassis




                                                                       14 Reverse   flywheel
                     10 Take-up      belt




                                                          6




                                     7
                                                                            9


                                                                                2

                             4                3
                                                                       13                                   14



                                         10                                                            5



                                         11                        8
                                                                                1




                                                              --1--
Mechanism top view and part names

                                                                     Head substrate
                                                                                          Forward/reverse
                                                                                          rod spring

           Brake rod




                              Brake rod spring                   Forward/reverse rod



     Eject rod                                                    Play relay gear




                                                 Reverse-play
                                                 reel base gear Forward-play
                                                                reel base gear
         Head substrate
         return spring

                                                  Reverse
                                                  capstan          Forward capstan




       Reverse pinch roller
                                                                                       Forward pinch roller

                                                          Head




                                                      --2--
Drive system

  1. Transmission of the motor's drive force to the two flywheels via the main belt (capstan drive)
     * Driving of the main gear (1) For changing mode to stop, forward-play, reverse-play, fast-for-
                                      ward, and rewind
                                  (2) For changing direction of the head and pinch rollers
                                  (3) For raising and lowering the head substrate

  2. Transmission of the forward flywheel's drive force to the take-up arm via the take-up belt
     * Driving of the reverse and forward reel bases

  3. Motor always rotates in the same direction (direction indicated by the arrow).

                                                      Take-up arm             Motor pulley
                                    Take-up belt




              Forward flywheel
                                     Main belt          Reverse flywheel




                                              --3--
Operation of the main gear from the stop mode to the play mode

                        
                                       Plunger     Trigger lever
                                                                   Trigger lever boss




                                                                                         Main gear



                 Trigger spring

                         Forward flywheel gear




                       When the plunger is drawn in, the main gear
                       rotates slightly (the flywheelgear and the main
                       gear engage).




  Drive force of the forward flywheel gear            Main gear rotates 120



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