Toshiba M-653 free download

File name Toshiba VCR Training M-653.pdf

TOSHIBA NTDVCR06 TECHNICAL TRAINING MANUAL VIDEO CASSETTE RECORDER M-653 ELECTRICAL TOSHIBA AMERICA CONSUMER PRODUCTS, INC. NATIONAL SERVICE DIVISION TRAINING DEPARTMENT 1420-B TOSHIBA DRIVE LEBANON, TENNESSEE 37087 PHONE: (615) 449-2360 FAX: (615) 444-7520 www.toshiba.com/tacp ©1997 CONTENTS 1. POWER SUPPLY CIRCUIT ... 1-1 1-1. Outline ... 1-1 1-2. Circuit Operation ... 1-1 1-2-1. Input Filter Circuit ... 1-1 1-2-2. Primary Side Rectifier and Smoothing Circuit ... 1-1 1-2-3. Switching Circuit ... 1-2 1-2-4. Current Limiter Circuit ... 1-2 1-2-5. Snubber Circuit ... 1-2 1-2-6. Voltage Control Circuit ... 1-3 1-2-7. Secondary Rectifier Circuit ... 1-3 1-2-8. ON/OFF 9V Circuit ... 1-4 1-2-9. EVER 5V ... 1-4 1-2-10. ON/OFF 5V Circuit ... 1-4 2. KEY DISPLAY CIRCUIT ... 2-1 2-1. Microcontroller Unit ... 2-1 2-2. Display Unit ... 2-2 2-3. Key Matrix Unit ... 2-2 2-4. Infrared-Red Receiver Unit ... 2-2 2-5. Interface Unit ... 2-2 2-6. Resonator Circuitry ... 2-2 2-7. Reset Circuitry ... 2-2 3. SERVO CIRCUIT ... 3-1 3-1. Cylinder Servo Circuit ... 3-1 3-1-1. Cylinder Rotation Detection Signal (FG/PG) ... 3-1 3-1-2. SW Pulse Generation Circuit ... 3-1 3-1-3. Phase Detection Control (APC) and Speed Detection Control (AFC) ... 3-2 3-1-4. Cylinder Control Output Circuit ... 3-2 3-1-5. fH Correction Circuit ... 3-2 3-1-6. Pseudo V Output Circuit ... 3-2 3-1-7. Motor Drive System ... 3-2 3-2. Capstan Servo Circuit ... 3-3 3-2-1. FG Pulse Generation/FG Amplifier/ FG Schmidt Circuit ...