(14GT15 / 14GT20) Service manual

www.DataSheet4U.com 14GT15 14GT20 SERVICE MANUAL S30Y114GT15// COLOUR TELEVISION Chassis No. UA-1 (14GT15) (14GT20) MODELS 14GT15 14GT20 In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified should be used. FEATURE Ë Ë Ë Ë Favorite Channel Full Auto Channel Preset and Auto Channel Skip 100-CH Program Memory CATV(Hyper Band) Ready Ë AVL(Sound Keeper) Function Ë Black Stretch Circuit Ë On Timer/Sleep Timer/Reminder Timer Ë Ë Ë Ë Ë Ë Ë Ë Blue Back Noise Mute Front AV-In (14GT-20 Only) Rear AV-In/Out Terminals Colour Comb Filter (NTSC Only) High Contrast Picture Hotel Mode Front Headphone JACK (14GT-20 Only) English / Thai OSD CONTENTS Page » » » » » » » » » SPECIFICATIONS ...........................................2 IMPORTANT SERVICE NOTES ..................... 3 ADJUSTMENT PRECAUTIONS ..................... 4 TROUBLE SHOOTING TABLE ..................... 27 SOLID STATE DEVICE BASE DIAGRAM .... 31 CHASSIS LAYOUT ........................................32 WAVEFORMS ................................................34 DESCRIPTION OF SCHEMATIC DIAGRAM . 35 SCHEMATIC DIAGRAM s INFRARED REMOTE CONTROL UNIT .. 36 s TUNER .....................................................37 s 14GT15, 14GT20 HOTEL MODE APPLICATION ..........................................38 Page s HEAD PHONE Unit and CRT Socket Unit ...................................... 39 s MAIN Unit ................................................. 40 » BLOCK DIAGRAM .........................................44 » PRINTED WIRING BOARD ASSEMBLIES .. 49 » REPLACEMENT PARTS LIST s ELECTRICAL PARTS .............................. 54 s MISCELLANEOUS PARTS ...................... 58 s SUPPLIED ACCESSORIES .................... 58 s PACKING PARTS .................................... 58 s CABINET PARTS .................................... 59 WARNING The chassis in this receiver is partially hot. Use an isolation transformer between the line cord plug and power receptacle, when servicing this chassis. To prevent electric shock, do not remove cover. No user – serviceable parts inside. Refer servicing to qualified service personnel. SHARP CORPORATION 1 www.DataSheet4U.com 14GT15 14GT20 J SCHEMATIC DIAGRAM: MODEL 14GT20 HEAD PHONE Unit I H G F CRT SOCKET Unit E D C B A 1 2 3 4 5 6 7 8 9 10 39 14GT15 14GT20 14GT15 14GT20 SCHEMATIC DIAGRAM: MODEL 14GT20 MAIN Unit J I H G F E D C B www.DataSheet4U.com A 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 42 43