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Extracted text from sony slv ks 1 service manual (Ocr-read)
Page 2
-“ 3 -“ TABLE OF CONTENTS
Section Title Page Section Title Page
SERVICE NOTE ...................................................................... 4
1. GENERAL
Play Timer ...................................................................... 1-1
Cassette Door Lock (Safety Lock) ................................ 1-1
Recording and Tape Speed Buttons ............................. 1-1
Connections .................................................................. 1-2
2. DISASSEMBLY
2-1. Upper Case Removal.................................................... 2-1
2-2. Front Panel Section Removal....................................... 2-1
2-3. Rear Panel (M) Removal.............................................. 2-1
2-4. Mechanism Deck Removal........................................... 2-1
2-5. MA-370 Board Removal................................................ 2-2
2-6. Internal Views................................................................ 2-3
2-7. Circuit Boards Location................................................. 2-4
3. BLOCK DIAGRAMS
3-1. Overall Block Diagram.................................................. 3-1
3-2. Video Block Diagram..................................................... 3-3
3-3. Servo/System Control Block Diagram.......................... 3-5
3-4. Audio Block Diagram..................................................... 3-7
3-5. Power Block Diagram.................................................... 3-9
4. PRINTED WIRING BOARDS AND
SCHEMATIC DIAGRAMS
4-1. Frame Schematic Diagram........................................... 4-3
4-2. Printed Wiring Boards and Schematic Diagrams......... 4-5
MA-370 Printed Wiring Board ....................................... 4-5
MA-370 (Head Amp) Schematic Diagram .................... 4-7
MA-370 (Video, Audio) Schematic Diagram ................. 4-9
MA-370 (Servo/System Control)
Schematic Diagram ....................................................... 4-13
MA-370/QP-1 (Kids Sound) Printed Wiring Board
and Schematic Diagram ................................................ 4-17
MA-370 (Mode Control) Schematic Diagram ............... 4-19
MA-370 (Power Supply) Schematic Diagram ............... 4-21
5. INTERFACE, IC PIN FUNCTION DESCRIPTION
5-1. System Control-Video/RP Block Interface
(MA-370 BOARD IC160) ............................................... 5-1
5-2. System Control-Servo Peripheral Circuit Interface
(MA-370 BOARD IC160) ............................................... 5-1
5-3. System Control-Mechanism Block Interface
(MA-370 BOARD IC160) ............................................... 5-2
5-4. System Control-System Control Peripheral
Circuit Interface (MA-370 BOARD IC160) .................... 5-3
5-5. System Control-Audio Block Interface
(MA-370 BOARD IC160) ............................................... 5-3
5-6. Servo/System Control Microprocessor Pin Function
(MA-370 BOARD IC160) ............................................... 5-4
6. ADJUSTMENTS
6-1. Mechanical Adjustments............................................... 6-1
6-2. Electrical Adjustments................................................... 6-1
2-1. Pre-Adjustment Preparations........................................ 6-1
2-1-1. Instruments to be Used ............................................ 6-1
2-1-2. Connection............................................................... 6-1
2-1-3. Set-up of Adjustment ................................................ 6-1
2-1-4. Alignment Tapes ....................................................... 6-1
2-1-5. Specified I/O Level and Impedance
input/output terminal ................................................ 6-1
2-1-6. Adjusting Sequence ................................................. 6-2
2-2. Power Supply Adjustment............................................. 6-2
2-2-1. Power Supply Check ................................................ 6-2
2-3. Servo System Adjustment............................................. 6-2
2-3-1. RF Switching Position Adjustment ........................... 6-2
2-4. Audio System Adjustments........................................... 6-3
2-4-1. Normal Audio System Adjustment ........................... 6-3
1. ACE Head Adjustment .................................................. 6-3
2. E-E Output Level Check ............................................... 6-3
3. Frequency Response Check ......................................... 6-3
2-5. Parts Arrangement Diagram for Adjustments............... 6-4
7. REPAIR PARTS LIST
7-1. Exploded Views............................................................. 7-1
7-1-1. Front Panel and Chassis Assembly ......................... 7-1
7-1-2. Mechanism Chassis Assembly (1) ........................... 7-2
7-1-3. Mechanism Chassis Assembly (2) ........................... 7-3
7-1-4. Mechanism Chassis Assembly (3) ........................... 7-4
7-2. Electrical Parts List........................................................ 7-5