LG LG LH-T550.1.2.3TB_LH-T750.1.2.3TB_XH-TK550X_XH-TK750X free download

File name LG LH-T550.1.2.3TB_LH-T750.1.2.3TB_XH-TK550X_XH-TK750X.pdf

SERVICE MANUAL DVD/CD & KARAOKE RECEIVER SERVICE MANUAL MODELS : LH-T550,1,2,3TB [ Speakers: LHS-55TBC, LHS-55TBS, LHS-55TBW ] MODELS : LH-T750,1,2,3TB [ Speakers: LHS-75TBC, LHS-75TBS, LHS-75TBW ] MODELS : XH-TK550X [ Speakers: XHS-75TBC, XHS-75TBS, XHS-75TBW ] MODELS : XH-TK750X [ Speakers: XHS-75TBC, XHS-75TBS, XHS-75TBW ] MODELS : LH-T550,1,2,3TB/XH-TK550X/LH-T750,1,2,3TB/XH-TK750X P/NO : 3829RGP018A APRIL, 2005 Printed in Korea LH-T550,1,2,3TB/XH-TK550X LH-T750,1,2,3TB/XH-TK750X [CONTENTS] SECTION 1.GENERAL · SERVICING PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 · ESD PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4 · SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5 SECTION 2. AUDIO PART · AUDIO TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 · WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-4 · BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6 · SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-8 · PRINTED CIRCUIT DIARGAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-22 SECTION 3.DVD & AMP PART · ELECTRICAL TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1 · DVD PART SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-22 SECTION 4. EXPLODED VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1 SECTION 5. SPEAKER PART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-1 SECTION 6. REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1 1-1 SECTION 1. GENERAL SERVICING PRECAUTIONS NOTES REGARDING HANDLING OF THE PICK-UP 1. Notes for transport and storage 1) The pick-up should always be left in its conductive bag until immediately prior to use. 2) The pick-up should never be subjected to external pressure or impact. Storage in conductive bag Drop impact 2. Repair notes 1) The pick-up incorporates a strong magnet, and so should never be brought close to magnetic materials. 2) The pick-up should always be handled correctly and carefully, taking care to avoid external pressure and impact. If it is subjected to strong pressure or impact, the result may be an operational malfunction and/or damage to the printed-circuit board. 3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reason the adjustment point and installation screws should absolutely never be touched. 4) Laser