SHARP CX3451 free download

File name TV SHARP CX3451S chassis 14A.pdf

SHARP SERVICE MANUAL PAL SYSTEM COLOUR TELEVISION Chassis No. 74A MODEL cx-3451 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. ELECTRICAL SPECIFICATIONS Convergence ... Self Converging System Focus ... Quadra-Potential Electrostatic Sweep Deflection ... Magnetic Intermediate Frequencies Picture IF Frequency.. ... 36.875 MHz Sound IF Carrier Trap.. ... .31.375 MHz Adjacent Sound Carrier Trap ... 32.445 MHz Power Input ... 220V / 240V AC 50Hz Power Consumption ... 66W at 220V AC 5OHz Audio Power Output Rating . . . . . . . . . . . . . 1.5W (Max.) Speaker Size . . . . . . . . . . . . . . . . 8cm Round Dynamic Type x 1 pc. Voice Coil Impedance . . . . . . . . . . 16 ohms at 400 Hz Aerial Input Impedance . . . . . . . . 75 ohm Unbalanced Receiving System . . . . . . . . . . . . . . . . . . . . . . . . . . . . CCIR PAL B/G Tuning Ranges VHF-Channels ----a- VHF-Channels AU0 - AU 11 UHF-Channels e----s UHF-Channels AU28 - AU69 I Page . ELECTRICAL SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . 1 . IMPORTANT SERVICE NOTES . . . . . ..*... 2 l SERVICE ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 . TROUBLE SHOOTING TABLE . . . . . . . . . . . . . . . . . . . . . . . . 13 . CHASSIS LAYOUT. . . . . . . . . . . . . . . . . . . . . . ..I... 18 Specifications are subject to change without prior notice. CONTENTS Page . PRINTED WIRING BOARD ASSEMBLIES . . . . . . . . . 19 l SCHEMATIC DIAGRAMS AND WAVEFORMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 . BLOCK DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 . REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . 27 I 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 IMPORTANT SERVICE NOTES Maintenance and repair of this receiver should be done by qualified service personnel only. SERVICING OF HIGH VOLTAGE SYSTEM AND PICTURE TUBE When servicing the high voltage system, remove static charge from it by connecting a 10 kohm Resistor in series with an insulated wire (such as a test probe) between picture tube dag and 2nd anode lead. (AC line cord should be disconnected from AC outlet.) 1. 2. 3. 4. Picture tube in this receiver employs integral implosion protection. Replace with tube of the same type number for continued safety. Do not lift picture tube by the neck. Handle the picture tube only when wearing shatterproof goggl