Sony slv ed 7 kr service manual

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Ð 3 Ð TABLE OF CONTENTS Section Title Page Section Title Page Feature Difference ................................................................... 2 SERVICE NOTE ...................................................................... 4 1. GENERAL Getting Started .............................................................. 1-1 Basic Operations ........................................................... 1-4 Additional Operations .................................................... 1-7 Additional Information ................................................... 1-9 2. DISASSEMBLY 2-1. Upper Case Removal.................................................... 2-1 2-2. NK-11 Board Removal .................................................. 2-1 2-3. Rear Panel Removal..................................................... 2-1 2-4. Front Panel Section Removal....................................... 2-1 2-5. Power Block Removal................................................... 2-2 2-6. Mechanism Deck Removal........................................... 2-2 2-7. MA-323 Board Removal................................................ 2-2 2-8. Internal Views................................................................ 2-3 2-9. Circuit Boards Location................................................. 2-4 3. BLOCK DIAGRAMS 3-1. Overall Block Diagram.................................................. 3-1 3-2. Video1 Block Diagram ................................................... 3-4 3-3. Video2 Block Diagram ................................................... 3-5 3-4. Servo/System Control Block Diagram .......................... 3-7 3-5. Audio Block Diagram ..................................................... 3-9 3-6. Tuner Block Diagram ..................................................... 3-11 3-7. Mode Control Block Diagram ........................................ 3-13 3-8. Power Block Diagram .................................................... 3-15 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-323 (Head Amp) Schematic Diagram .................... 4-5 MA-323 Printed Wiring Board ....................................... 4-9 MA-323 (Video, Audio) Schematic Diagram ................. 4-11 MA-323 (System Control) Schematic Diagram ............ 4-15 MA-323 (Servo Control) Schematic Diagram ............... 4-17 MA-323 (Hi-Fi Audio) Schematic Diagram .................... 4-19 MA-323 (IO) Schematic Diagram .................................. 4-21 MA-323 (Tuner) Schematic Diagram ............................ 4-23 MA-323 (Mode Control) Schematic Diagram ................ 4-25 MA-323 (FL Driver) Schematic Diagram ....................... 4-27 MA-323 (Power Supply) Schematic Diagram ............... 4-29 DS-80 Printed wiring Board and Schematic Diagram ....................................................... 4-31 NK-11 Printed wiring Board and Schematic Diagram ....................................................... 4-33 DM-76, MF-312 Printed Wiring Board and Schematic Diagram ............. 4-35 HS-921SF/921SF1 Printed Wiring Board ..................... 4-37 HS-921SF/921SF1 Schematic Diagram ....................... 4-39 SR-708 Printed Wiring Board ........................................ 4-41 SR-708 Schematic Diagram ......................................... 4-43 5. INTERFACE, IC PIN FUNCTION DESCRIPTION 5-1. System Control-Video Block Interface (MA-323 board IC161) .................................................. 5-1 5-2. System Control-Servo Peripheral Circuit Interface (MA-323 board IC161) .................................................. 5-1 5-3. System Control-Mechanism Block Interface (MA-323 board IC161) .................................................. 5-2 5-4. System Control-Audio Block Interface (MA-323 board IC161) .................................................. 5-3 5-5. Servo/System/Tuner/Timer Control Microprocessor Pin Function (MA-323 board IC161) ............................. 5-4 5-6. Korean Stereo Processor Pin Function (NK-11 board IC1) ......................................................... 5-5 6. ERROR CODES ....................................................... 6-1 7. ADJUSTMENTS 7-1. Mechanical Adjustments............................................... 7-1 7-2. Electrical Adjustments................................................... 7-1 2-1. Pre-Adjustment Preparations........................................ 7-1 2-1-1. Instruments to be Used ............................................ 7-1 2-1-2. Connection ............................................................... 7-1 2-1-3. Set-up of Adjustment ................................................ 7-1 2-1-4. Alignment Tape ......................................................... 7-1 2-1-5. Specified I/O Level and Impedance ......................... 7-1 2-1-6. Adjusting Sequence ................................................. 7-2 2-2. Power Supply Adjustment............................................. 7-2 2-2-1. Power Supply Check ................................................ 7-2 2-2-2. +6V Adjustment ........................................................ 7-2 2-3. Servo System Adjustment ............................................. 7-2 2-3-1. Switching Position Adjustment ................................. 7-2 2-4. Audio System Adjustments........................................... 7-3 2-4-1. Hi-Fi Audio System Adjustment ............................... 7-3 1. AF Switching Position Adjustment ........................... 7-3 2. Frequency Response Check .................................... 7-3 3. Overall Level Characteristic and Distortion Factor Check ........................................... 7-4 4. Overall S/N Check .................................................... 7-4 2-4-2. Normal Audio System Adjustment ........................... 7-4 1. ACE Head Adjustment ............................................. 7-4 2. E-E Output Level Check .......................................... 7-4 3. Frequency Responce Check .................................... 7-4 4. Overall Level Characteristic and Distortion Factor Check ............................................................ 7-5 5. Overall S/N Check .................................................... 7-5 2-5. Tuner System Adjustment ............................................. 7-5 2-5-1. Separation Adjustment ............................................. 7-5 2-6. Parts Arrangement Diagram for Adjustments ............... 7-6 8. REPAIR PARTS LIST 8-1. Exploded Views............................................................. 8-1 8-1-1. Front Panel and Cabinet Assemblies (ED1) ........... 8-1 8-1-2. Chassis Assembly (ED1) ......................................... 8-2 8-1-3. Front panel and Cabinet Assemblies (ED4/ED7/ED8) ........................................................ 8-3 8-1-4. Chassis Assembly (ED4/ED7/EZ8) ......................... 8-4 8-1-5. Mechanism Chassis Assembly (1) ........................... 8-5 8-1-6. Mechanism Chassis Assembly (2) ........................... 8-6 8-1-7. Mechanism Chassis Assembly (3) ........................... 8-7 8-2. Electrical Parts List ....................................................... 8-8