SLV-E420CP, SLV-E420VC, SLV-E520CP, SLV-E520UX, SLV-E520VC - Sony VCR Service Manual (repair manual). Page 4

  3-13-3. S Brake ACT Slide and BT Spring Lever

       Assembly ........................................................ 5-20

3-14. Guides .................................................................. 5-21
  3-14-1. Guide Roller Assembly ................................... 5-21
  3-14-2. S and T Incline Mounting Assemblies ............ 5-21
3-15. Wheel Gear 2, Main Cam and Mode Switch ....... 5-22
3-16. Crescent Slide ...................................................... 5-23
3-17. S Load Gear, T Load Gear, S Load Lever

  Assembly and T Load Lever Assembly ............... 5-24

3-18. Tape Sensors, Reel Sensor and EP SW Lever ...... 5-25
  3-18-1. Tape Top Sensor and Tape End Sensor ........... 5-25
  3-18-2. Reel Sensor ..................................................... 5-25
  3-18-3. EP Switch Lever ............................................. 5-25
4. Mechanism Checks and Adjustments ........................ 5-26
4-1. Reel Table Torque Check ....................................... 5-26
4-2. Adjusting the BT Lever Assembly Position and

Checking the Back Tension Torque in Play Mode . 5-26

  4-2-1. BT Lever Pole Position Adjustment ................. 5-26
  4-2-2. Checking the Back Tension Torque

     Play Mode ......................................................... 5-26

4-3. Tape Path Adjustment ............................................ 5-27
  4-3-1. Adjustment Procedure ...................................... 5-27
  4-3-2. Load Lever Assembly Height Adjustment ........ 5-27
  4-3-3. Guide Roller Height Adjustment ...................... 5-28
  4-3-4. Audio R/P Head (ACE HEAD) Height

     Adjustment, Azimuth Adjustment and
     Horizontal Position Adjustment ........................ 5-29

  4-3-5. Checking After Adjustment .............................. 5-30E

Circuit Boards Location ................................................ 6-1
Self -Diagnosis Display ................................................. 6-2
1. Self-Diagnosis Contents and Mechanism Mode
    Display ...................................................................... 6-2
2. Electrical Adjustment ................................................ 6-4
2-1. Servo Circuit Adjustment ....................................... 6-4
  2-1-1. Test Equipment and Standards Required .......... 6-4
  2-1-2. Location of Adjustment Points ......................... 6-4
  2-1-3. Switching Position Adjustment ........................ 6-5
2-2. Video Circuit Relay Jig .......................................... 6-6
  2-2-1. Test Equipment and Standards Required .......... 6-6
2-3. IF Circuit Adjustment ............................................ 6-7E
  2-3-1. Test Equipment and Standard Required ........... 6-7E
  2-3-2. Location of Adjustment Point ........................... 6-7E
  2-3-3. RF AGC  Adjustment ........................................ 6-7E
3. Test Points for Tape Path Adjustment ....................... 6-7E

7-1. Cabinet & Chassis Parts ......................................... 7-1
7-2. Mechanism Parts-1 ................................................. 7-2
7-3. Mechanism Parts-2 ................................................. 7-3E

................................. 8-1

Hardware List ................................................................ 8-9E