SLV-E220B, SLV-E420B, SLV-E520B - Sony VCR Service Manual (repair manual). Page 3

Etape 1 Connexion du magnétoscope ........................... 1-1
Etape 2 Syntonisation du magnétoscope sur
les canaux TV ................................................................ 1-1
Etape 3 Réglage de l’horloge ........................................ 1-1
Instructions de syntonisation supplémentaires .............. 1-2
Réglage du décodeur et tuner satellite .......................... 1-2
Lecture d’une cassette ................................................... 1-3
Enregistrement de programmes TV .............................. 1-3
Enregistrement de programmes TV avec
SHOWVIEW ................................................................. 1-4
Lecture/recherche à différentes vitesses ........................ 1-5
Réglage manuel du programmateur .............................. 1-5
Enregistrement des programmes TV avec le
programmateur rapide ................................................... 1-5
Vérification/annulation des programmations ................ 1-6
Montage au moyen d’un autre magnétoscope ............... 1-6
Réglage de l’image ........................................................ 1-6
Index des composants et des commandes ..................... 1-7E

1-1. Removal of Cabinet, Mechanism Unit and Main

Board ..................................................................... 2-1
Removing the Cabinet Parts .................................. 2-1
Removing the Mechanism Main Unit and the
CP-1 PWB Assembly ............................................. 2-1

l-2. Temporarily Setting Up and Connecting

CP-1 PWB Assembly ............................................. 2-3E

1-3. Installation of the Front Panel ................................ 2-3E

Circuit Boards Location ................................................ 3-1
Overall wiring Diagram ................................................ 3-3
Mechanism Connection Diagram .................................. 3-5
Video Circuit Diagram .................................................. 3-6
Audio Circuit Diagram .................................................. 3-8
System Control  & Servo Circuit Diagram ................... 3-9

CP-1 Board (PW-A) Power Supply Circuit Diagram ... 4-1
TM-9 Board PDC/VPS ................................................. 4-2
TM-10 Board FLIP FLOP ............................................. 4-3
Video Circuit Waveforms .............................................. 4-4
CP-1 Board (VA-A) Video & Audio Circuit Diagram .. 4-5
VP-1 Board Video Pre-Amp circuit Diagram
(SLV-E420B/E520B) ..................................................... 4-7
VP-1 Board Video Pre-Amp circuit Diagram
(SLV-E220B) ................................................................. 4-9
CP-1 Board (SV-A) Servo Circuit Diagram .................. 4-11
Servo Circuit Waveforms .............................................. 4-13
CP-1 Board (SY-A) System Control, Timer & Tuner
(SLV-E420B/E520B) ..................................................... 4-15
IC 301 System Control, Timer & Tuning Control MPU Pin
Functions Table ............................................................. 4-16
CP-1 Board (SY-A) System Control, Timer & Tuner
(SLV-E220B) ................................................................. 4-17
TM-1, 2 Board Operation Key & Display
Circuit Diagram ............................................................. 4-23
A7101 Display (FLD) Grid/Anode Assignment
Drawing & Table ........................................................... 4-25E

1. Maintaining and Checking the Mechanism ............... 5-1
l -1.  Regular Checks and Maintenance Items ............... 5-1
  1-1-1.  Regular Checks ................................................ 5-1
  1-1-2. Cleaning ............................................................ 5-1
1-2 Service Tools ........................................................... 5-2
  1-2-1.  Service Tools ................................................... 5-2
  1-2-2. Using the Relay Cable (VHJ-0106) .................. 5-3
2. An Overview of the Mechanism ................................ 5-3
2-1. Names of the Main Parts ........................................ 5-3
  2-1-1. Cassette Mechanism Assembly ........................ 5-3
  2-1-2. Top  View .......................................................... 5-4
  2-1-3. Under Side ........................................................ 5-4
2-2. An Overview of the Mechanism Modes ................ 5-5
  2-2-1. Mechanism Mode Switching Table .................. 5-5
  2-2-2. Movement Check List for the Main Parts of the

     Mechanism ........................................................ 5-6

  2-2-3. How to Check the Mechanism

     Mode Position ................................................... 5-6

  2-2-4. Self-Diagnosis Display ..................................... 5-6
3. Disassembling the Main Parts of the Mechanism ..... 5-7
3-1. How to Make the Mechanism Move ...................... 5-7
  3-1-1. How to Operate the Loading Motor Using

      A DC Voltage Supply ....................................... 5-7

  3-1-2. Operating the Loading Motor

     by the Manual Method ...................................... 5-7

  3-1-3. Making the Mechanism Move

     Using the Manual Method ................................ 5-7

3-2. Mechanism Unit ..................................................... 5-8
3-3. Cassette Drive Mechanism ..................................... 5-8
  3-3-1. Cassette Mechanism Assembly ........................ 5-8
  3-3-2. Cassette Drive Gear .......................................... 5-9
  3-3-3. Door opener, Under Frame and Stand L ........... 5-9
  3-3-4. Start Rack Gear and Front Rack Gear .............. 5-10
3-4. Cleaner Roller Assembly ....................................... 5-10
3-5. Cylinder (DRUM) .................................................. 5-11
  3-5-1. Upper Cylinder Assembly (UPPER DRUM) ... 5-11
  3-5-2. Cylinder Motor (ROTOR and STATOR) .......... 5-12
  3-5-3. Cylinder Assembly ........................................... 5-12
3-6. FE Head and ACE Head ......................................... 5-13
  3-6-1. Audio R/P Head Assembly (ACE HEAD) ........ 5-13
  3-6-2. Full Erase Head ................................................ 5-13
3-7. Capstan Motor ........................................................ 5-14
  3-7-1. Capstan Motor .................................................. 5-14
  3-7-2. Capstan Brake Assembly .................................. 5-14
3-8. Loading Motor Assembly and

Worm Gear Assembly ............................................ 5-15

3-9. Pinch Roller Pressure Mechanism ......................... 5-15
  3-9-1. Pinch Roller Lever Assembly ........................... 5-15
  3-9-2. Pinch Lift Cam and Pinch Cam Gear ............... 5-16
3-10. L Guide Lever Assembly and

  Load Lever Assembly .......................................... 5-17

3-11. BT Lever Assembly ............................................. 5-17
3-12. Reel Drive Mechanism ......................................... 5-18
  3-12-1. Reel belt, Reel Pulley, Friction Gear

       Assembly and Clutch Change Lever ............... 5-18

  3-12-2. Clutch Mounting Assembly ............................ 5-18
  3-12-3. S Soft Lever, Supply Reel Assembly

       and S Reel Gear .............................................. 5-18

  3-12-4. T Soft Brake Assembly, Take Up Reel