SERVICE MANUAL Colour Television - diagramas.diagram...

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Contents Safety Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Chassis Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4 IC Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-6 IC201 Port function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Service Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Service Adjustments with replacing Memory IC (IC801) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-13 Service Mode Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-15 Service Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Special Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Purity and Convergence Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-19 Cabinet Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Chassis Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21-31 Component Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32-34 Voltages and Waveforms Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34-35 Safety Notice SAFETY PRECAUTIONS 1: An isolation transformer should be connected in the power line between the receiver and the AC line when a service is performed on the primary of the converter transformer of the set. 2: Comply with all caution and safety-related notes provided on the cabinet back, inside the cabinet, on the chassis or the picture tube. 3: When replacing a chassis in the cabinet, always be certain that all the protective devices are installed properly, such as, control knobs, adjustment covers or shields, barriers, isolation resistor-capacitor networks etc.. Before returning any television to the customer, the service technician must be sure that it is completely safe to operate without danger of electrical shock. X-RADIATION PRECAUTION The primary source of X-RADIATION in television receiver is the picture tube. The picture tube is specially constructed to limit X-RADIATION emissions. For continued X-RADIATION protection, the replacement tube must be the same type as the original including suffix letter. Excessive high voltage may produce potentially hazardous X - RADIATION. To avoid such hazards, the high voltage must be maintained within specified limit. Refer to this service manual, high voltage adjustment for specific high voltage limit. If high voltage exceeds specified limits, take necessary corrective action. Carefully follow the instructions for + B1 volt power supply adjustment, and high voltage check to maintain the high voltage within the specified limits. PRODUCT SAFETY NOTICE Product safety should be considered when a component replacement is made in any area of a receiver. Components indicated by mark in the parts list and the schematic <strong>diagram</strong> designate components in which safety can be of special significance. It is particularly recommended that only parts designated on the parts list in this manual be used for component replacement designated by mark . No deviations from resistance wattage or voltage ratings may be made for replacement items designated by mark . -2-
Chassis Block Diagrams MAIN SIGNAL PROCESSING CIRCUIT SP901 SP902 AV1-OUT AV1-IN DVD-IN K104 AV2-IN V-OUT L-OUT R-OUT V-IN L-IN R-IN V-IN L-IN R-IN IC001 AUDIO AMP. IC3701 AUDIO CONTROL LCH-A RCH-A L-OUT R-OUT L-IN L-OUT R-IN L+R-OUT R-OUT LCH-C RCH-C IC1001 VIDEO SWITCH IC3702 WOOFER AMP. FRONT CONTROL KEYS SW1901~ SW1906 A1901A RC RECEIVER FM-OUT 5 IC201 IF/CPU/ VIDEO/ CHROMA/ DEF. IC801 EEPROM D1910 LED X161 SAW FILTER Q111 IF AMP. A101 TUNER CRT HV L902 DY IC501 5/6 3 VERT. /DEF. T431 H-DRIVE TRANS. Q431 H-DRIVE Q432 H-OUT T471 FBT FOCUS SCREEN PCC CIRCUIT Q461-Q462 HV POWER SUPPLY CIRCUIT 145V 28V 18V FBT 36V TUNER HORIZ. DEF. VERT. DEF. 16V 13V 9V 9V 5V MAIN SOUND AMP. SURROUND. AV SW AUDIO CTL / 1 CHIP IC CPU / EEPROM KEY-IN RC-IN POWER ON-OFF K1102 HEADPHONE JACK K1101 WOOFER OUT S-TERMINAL K1003 L-OUT R-OUT CR-IN CB-IN Y-IN Y-IN C-IN 9 11 2 1 VIDEO MONITOR OUT AUDIO MONITOR OUT(LEFT) 3 1 7 7 15 39 52 26 36 64 63 CR-IN CB-IN Y-IN VIDEO/ S-Y IN S-IN C-IN 51 49 48 46 24 45 28 27 12 13 14 17 21 54 SCL SDA 6 5 R-OUT G-OUT B-OUT VERT. OUT HORIZ. OUT V-IN CRT UNIT R G B HEATER -3-
Page 1: -/-- CH x CH SCAN CH BASS SOUND S.
Page 5 and 6: I BUS IC Block Diagrams IC201 < CPU
Page 7 and 8: IC201 Port Function Pin No. Functio
Page 9 and 10: Service Adjustments with Replacing
Page 15 and 16: Service Mode Adjustments Items 30-3
Page 17 and 18: Special Function The following spec
Page 19 and 20: Purity and Convergence Adjustment C
Page 21 and 22: Chassis Electrical Parts List BA6R/
Page 23 and 24: BA6R/BA6RA Ref. No. Part No. Descri
Page 33 and 34: -33- Component Locations Main Board
Page 35 and 36: Voltages and Waveforms Charts IC001
Page 37: W10B03901 1 2 1 1 2 1 2 1 2 1 2 1 2

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