Admiral TG2900-A, TGF2900-A free download

File name Service Manual TG-2900A ( Chassis N ).pdf

2 9 "N " Chassis CONTENTS 1. PRECAUTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 6. TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Safety Precaution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 No Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Servicing Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 In stand-by status (POWER OK), TV is switched on, Precautions for Electrostatically Sensitive Devices . . . . . 6 SMPS turns off and LED turns off (ON/OFF) . . . . . . . . . . . 26 2. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 No Picture (sound ok) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 3. DESCRIPTION OF CONTROLS . . . . . . . . . . . . . . . . . . . . . . 8 No Sound . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 4. ALIGNMENT AND ADJUSTMENTS . . . . . . . . . . . . . . . . . . . 9 Vertical Line(Reference Line) . . . . . . . . . . . . . . . . . . . . . . 29 Preadjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7. BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Factory / Service Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 8. PCB LAYOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Other Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 9. PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 5. USING DEVICES AND DESCRIPTION . . . . . . . . . . . . . . . . 16 10. CRICUIT DIAGRAM Main IC (TV Processor/u-com/ TMPA8857) . . . . . . . . . . . 16 15W+15W Dual Bridge Amplifier (TDA7297) . . . . . . . . . . 17 MSP 3420G . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Power (KA5Q1265RF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Vertical deflection output circuit(LA78045) . . . . . . . 23 Triple video output amplifier(TDA6108JF) . . . . . . . 24 1. Precautions Follow these safety, servicing and ESD precautions to prevent damage and protect against potential hazards, such as electrical shock and X-rays. 1-1 Safety Precautions 1. Be sure that all of the built-in protective devices are replaced. Restore any missing protective shields. 2. When reinstalling the chassis and its assemblies, be sure to restore all protective devices, including : nonmetallic control knobs and compartm