TOSHIBA Toshiba CV27D48 Chassis N4FV training manual free download

File name Toshiba_CV27D48 Chassis N4FV_training_manual.pdf

CONTENTS SECTION I N4VF CHASSIS OVERVIEW 1. N4VF CHASSIS (CV27D48) FEATURES ...1-2 2. SPECIFICATIONS ...1-2 3. N4VF CONFIGURATION ...1-3 3-1. Layout ...1-3 3-2. Service Position...1-3 4. BLOCK DIAGRAM ...1-4 SECTION II POWER SUPPLY CIRCUIT 1. POWER SUPPLY BLOCK DIAGRAM ...2-2 1-1. Power Supply Overview ...2-3 1-2. Main Switching Circuit ...2-3 1-3. Voltage Regulator/Controller IC ...2-4 2. TROUBLESHOOTING...2-4 2-1. Troubleshooting Flow Charts ...2-5 Flow Chart 1 - TV Does Not Turn On ...2-5 Flow Chart 2 - No High B+ ...2-6 Flow Chart 3 - High B+ Supply in Shut-down ...2-7 3. POWER LINE TIMING CHART ...2-8 SECTION III SYSTEM CONTROL 1. SYSTEM CONTROL OVERVIEW ...3-2 1-1. Clock/Reserve Function ...3-2 1-2. Channel Selection Functions (PLL-IC control) ...3-2 1-3. Other Functions ...