Table Of Contents - Toshiba SD-2050 Service Manual

1. OPERATING INSTRUCTIONS
Specifications
2. LOCATION OF MAIN PARTS AND
MECHANISM PARTS
2-1. Location of Main Parts
2-2. Location of Mechanism Parts
1. REPLACEMENT OF MECHANICAL PARTS
1-1. Cabinet Replacement
1-1-1. Top Cover
1-1-2. Tray Panel
1-1-3. Front Panel
1-1-4. Rear Panel
1-2. PC Board Replacement
1-2-1. Main PC Board
1-2-2. Output PC Board
1-2-3. Power Supply PC board
1-2-4. Front Display and Power SW PC Boards
1. STANDING PC BOARDS FOR SERVICING
2. CIRCUIT SYMBOLS AND
SUPPLEMENTARY EXPLANATION
2-1. Precautions for Part Replacement
2-2. Solid Resistor Indication
2-3. Capacitance Indication
2-4. Inductor Indication
2-5. Waveform and Voltage Measurement
2-6. When Replaced ROM ICs or Upgraded Firmware
3. PRINTED WIRING BOARD AND
SCHEMATIC DIAGRAM
4. BLOCK DIAGRAMS
4-1. Overall Block Diagram
4-2. Power Supply Block Diagram
4-3. Front Display, Power Switch Block Diagram
SAFETY PRECAUTION
NOTICE
ABBREVIATIONS
1. Integrated Circuit (IC)
2. Capacitor (Cap)
3. Resistor (Res)
CONTENTS
SECTION 1
GENERAL DESCRIPTIONS
SECTION 2
PART REPLACEMENT AND ADJUSTMENT PROCEDURES
SECTION 3
SERVICING DIAGRAMS
SECTION 4
PARTS LIST
3. TROUBLESHOOTING
3-1. Main Circuit
3-1-1. Servo System
3-1-2. Location Diagram of Servo Test Point
1-3. Mechanism Parts Replacement
1-3-1. Mechanism Chassis Assembly
1-3-2. Loading Belt
1-3-3. Loading Motor
1-3-4. Pickup Mechanism Assembly
1-3-5. Gear A Assembly, Gear B and
Rack Gear Assembly
1-3-6. Feed Motor
1-4. Tray Replacement
1-4-1. Tray Removal
1-4-2. Tray Mounting
4-4. Main Block Diagrams
4-5. Output Block Diagram
5. CIRCUIT DIAGRAMS
5-1. Power Supply Circuit Diagram
5-2. Front Display, Power Switch Circuit Diagram
5-3. Main Circuit Diagram
5-4. Output Circuit Diagram
5-5. Motor System Circuit Diagrams
6. PC BOARDS
6-1. Power Supply PC Board
6-2. Power Switch PC Board
6-3. Main PC Board
6-4. Output PC Board
6-5. Front Display PC Board
4. EXPLODED VIEWS
4-1. Packing Assembly
4-2. Chassis Assembly
4-3. Mechanism Assembly
5. PARTS LIST