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SERVICE MANUAL

32

"

 COLOR LCD TELEVISION

 LCD-A3206/LCD-B3206/

LCD-C3206/LCD-D3206

Summary of Contents for LCD-A3206

Page 1: ...SERVICE MANUAL 32 COLOR LCD TELEVISION LCD A3206 LCD B3206 LCD C3206 LCD D3206...

Page 2: ...LCD Television 5 1 Electrical Adjustment Instructions 6 1 Block Diagrams 7 1 Schematic Diagrams CBA s and Test Points 8 1 Waveforms 9 1 Wiring Diagram 10 1 Exploded View 11 1 Mechanical Parts List 12...

Page 3: ...nal Limit 1 Intermediate Freq Picture Sound MHz MHz 45 75 41 25 2 Color Killer Sens CH 2 CH 10 CH 55 dB V dB V dB V 17 17 17 23 23 23 3 AFT Pull In Range 10 mV input MHz 2 4 2 1 Description Condition...

Page 4: ...terminal screw and if applicable to the coaxial connector If the measured resistance is less than 1 0 megohm or greater than 5 2 megohm an abnormality exists that must be corrected before the instrum...

Page 5: ...near thermally hot parts be sure that leads and components do not touch thermally hot parts c the AC supply d high voltage and e antenna wiring Always inspect in all areas for pinched out of place or...

Page 6: ...s H When a power cord has been replaced check that 5 6 kg of force in any direction will not loosen it I Also check areas surrounding repaired locations J Use care that foreign objects screws solder d...

Page 7: ...prongs and externally exposed accessible parts RF terminals an tenna terminals video and audio input and output ter minals microphone jacks earphone jacks etc Measuring Method Power ON Insert load Z...

Page 8: ...the flat pack IC is fixed with glue to the CBA when removing entire flat pack IC first apply soldering iron to center of the flat pack IC and heat up Then remove glue will be melted Fig S 1 6 4 Relea...

Page 9: ...ins of the flat pack IC you can remove it easily Fig S 1 3 2 Affix the wire to a workbench or solid mounting point as shown in Fig S 1 5 3 While heating the pins using a fine tip soldering iron or hot...

Page 10: ...ur due to a potential difference caused by electrostatic charge during unpacking or repair work 1 Ground for Human Body Be sure to wear a grounding band 1 M that is properly grounded to remove any sta...

Page 11: ...Unplug Unclamp Desolder Note 1 Stand Base Plate D1 4 S 1 6 S 2 5 S 3 2 Stand Hinge D1 3 Stand Cover D1 4 Rear Cabinet D1 12 S 4 4 S 5 5 Function CBA D1 D5 3 S 6 CN10 CN11 CN11B 6 Chassis Bracket D2 1...

Page 12: ...4 2 L5920DC 4 Rear Cabinet 5 Function CBA 3 Stand Cover 2 Stand Hinge 1 Stand Base Plate S 6 S 4 S 4 S 5 S 4 S 2 S 2 S 3 S 3 S 4 S 4 S 4 S 4 S 4 S 4 S 5 S 4 S 1 S 4 S 2 Fig D1...

Page 13: ...Shield Box 8 Jack Holder A 6 Chassis Bracket S 7 S 9 S 10 S 11 S 11 S 11 S 11 S 7 S 7 S 7 S 8 S 7 Fig D2 10 Main CBA 12 Inverter CBA 13 PCB Holder 11 Digital Main CBA Unit S 12 S 12 S 13 S 13 S 16 S...

Page 14: ...Panel Holder 14 Panel Holder 16 LCD Module Assembly 17 LED CBA 19 Speaker L 18 Speaker R 20 Front Cabinet S 17 S 18 S 18 S 17 S 17 S 18 S 18 S 18 S 18 S 22 S 21 S 20 S 18 S 17 S 17 S 17 15 T CON CBA S...

Page 15: ...t To Speaker CN10 CN11 CN11B Function CBA CN703 CN104A CN103A CN102A CN101A CN101B CN102B CN103B CN104B CN400 CN11A CN111 CN54B CN54 CN214 CN213 CN211 CN212 CN111 To LCD Module Assembly T CON CBA CN10...

Page 16: ...o initialize the LCD television 1 Turn the power off 2 To enter the service mode while pressing SETUP button press STANDBY ON button on the TV unit To cancel the service mode press STANDBY ON button o...

Page 17: ...NDBY ON button on the TV unit To cancel the service mode press STANDBY ON button on the TV unit 1 Initial Setting General Enter the Service mode Set the each initial data as shown on table 1 below Tab...

Page 18: ...1 VOL p 3 131 DR 1 C D S 1 VOL p 4 134 DG 1 C D S 1 VOL p 5 119 DB 1 C D S 1 VOL p 6 114 SBR 1 C D S 1 VOL p 7 63 SBB 1 C D S 1 VOL p 9 63 COR 2 C D S 2 VOL p 1 111 COG 2 C D S 2 VOL p 2 110 COB 2 C D...

Page 19: ...he Auto Calibration adjustment mode press 5 button on the service remote control unit 4 To start auto adjustment press CH o button on the service remote control unit In the auto adjustment mode Please...

Page 20: ...peatedly until both values are within specification 6 YUV APL 70 Press 6 button to select DB 2 C D S 2 for Blue adjustment Press 4 button to select DR 2 C D S 2 for Red adjustment When x value and y v...

Page 21: ...CN11B CN11A 17 LED 2 51 LED 1 SDA SCL SDA SCL SDA SDA SCL WP SCL SDA SCL BUS OPEN 37 28 27 26 AUDIO MUTE VOLUME 77 1 5 6 7 KEY IN1 93 AUDIO MUTE VOLUME P ON H1 59 P ON H2 P ON H3 56 57 P ON H1 P ON H2...

Page 22: ...COMPONENT Y 6 COMPONENT Pb 8 COMPONENT Pr 9 VIDEO IN1 VIDEO IN2 JK704 SCART 20 41 VIDEO OUT1 VIDEO OUT2 JK704 SCART 19 40 32 28 36 11 7 15 17 16 4 24 28 30 8 6 73 71 69 22 49 47 44 45 SDA SCL I2C I F...

Page 23: ...IN JK701 AUDIO R IN3 AUDIO L IN3 JK702 IF SIGNAL PROCESS IC701 AUDIO SELECTOR IC801 AUDIO AMP 31 7 2 30 AUDIO 6 43 I2C I F I2C I F AMP 13 12 93 91 44 45 89 87 85 81 79 94 92 90 88 86 82 80 AUDIO SW L...

Page 24: ...IDEO C COMPONENT Y COMPONENT Pb COMPONENT Pr LVDS TX3 19 LVDS CLK 16 LVDS CLK 15 Q401 Q400 SDA SCL IC201 HDMI INTERFACE IC200 HDMI MEMORY 7 9 4 6 1 3 10 12 16 15 35 34 38 37 41 40 43 44 22 23 27 21 20...

Page 25: ...9 8 7 3 4 T1100 2 5 1 6 10 9 8 7 3 4 T1150 2 5 1 6 10 9 8 7 3 4 T1200 2 5 1 6 10 9 8 7 3 4 T1250 2 5 1 6 10 9 8 7 3 4 T1300 2 5 1 6 10 9 8 7 3 4 INV 24V 1 8 13 20 BACKLIGHT ADJ 19 2 BACKLIGHT SW 20 1...

Page 26: ...P ON 1 8V AL 1 5V Q510 SW 3 3V Q532 SW 5V Q502 9V REG Q804 Q805 Q806 SW 22V IC516 5V REG 1 2 4 Q534 Q533 Q801 Q512 IC513 3 3V REG 1 2 IC515 5V REG 1 3 IC514 3 3V REG 1 2 4 IC531 1 8V REG 1 2 4 IC532...

Page 27: ...ings for ordering The correct part number is shown in the parts list and may be slightly different or amended since these drawings were prepared 2 All resistance values are indicated in ohms K 103 M 1...

Page 28: ...d 2 To maintain original function and reliability of repaired units use only original replacement parts which are listed with their part numbers in the parts list section of the service manual 4 Volta...

Page 29: ...8 3 L5920SCM1 Main 1 5 Schematic Diagram NOTE is an unnecessary part of the circuit configuration therefore servicing is not required for this product operates independently of this part...

Page 30: ...8 4 L5920SCM2 Main 2 5 Schematic Diagram NOTE is an unnecessary part of the circuit configuration therefore servicing is not required for this product operates independently of this part...

Page 31: ...8 5 L5920SCM3 Main 3 5 Schematic Diagram CN103A 1 4 6 2 4 6 3 2 5 4 2 5 5 0 6 3 8 7 0 8 0 9 0 10 0 11 2 4 12 0 13 2 5 14 2 4 15 0 16 17 18 19 20 21 5 0 22 5 0 23 VOLTAGE CHART Pin No Voltage...

Page 32: ...4 16 16 0 17 17 2 4 18 18 0 19 19 20 20 1 4 21 21 0 22 22 23 23 3 3 CN102A 1 0 2 3 0 4 5 0 6 2 7 7 3 2 8 0 9 10 0 2 11 3 7 12 0 6 13 0 14 5 0 15 0 16 0 17 3 3 18 3 3 19 0 20 1 6 21 0 22 3 3 23 0 VOLTA...

Page 33: ...hat all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply Otherwise it may cause some components in the power supply circuit to fail CAUTIO...

Page 34: ...8 8 Function Schematic Diagram L5920SCF CN11B 1 2 3 5 0 4 5 0 5 5 0 6 0 7 5 2 8 5 2 9 0 10 0 VOLTAGE CHART Pin No Voltage...

Page 35: ...8 9 L5920SCL LED Schematic Diagram CN54B 1 0 2 5 0 3 5 0 4 3 5 5 0 1 VOLTAGE CHART Pin No Voltage...

Page 36: ...8 10 Inverter Schematic Diagram L5920SCINV...

Page 37: ...8 11 L5920SCD1 Digital Main 1 5 Schematic Diagram NOTE is an unnecessary part of the circuit configuration therefore servicing is not required for this product operates independently of this part...

Page 38: ...8 12 L5920SCD2 Digital Main 2 5 Schematic Diagram...

Page 39: ...8 13 L5920SCD3 Digital Main 3 5 Schematic Diagram NOTE is an unnecessary part of the circuit configuration therefore servicing is not required for this product operates independently of this part...

Page 40: ...8 14 L5920SCD4 Digital Main 4 5 Schematic Diagram...

Page 41: ...8 15 L5920SCD5 Digital Main 5 5 Schematic Diagram...

Page 42: ...nit If Main Fuse F601 is blown check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply Otherwise it may cause some componen...

Page 43: ...common terminal Because a hot chassis ground is present in the power supply circut an isolation transformer must be used Also in order to have the ability to increase the input slowly when troublesho...

Page 44: ...8 18 Function CBA Top View Function CBA Bottom View BL5820F01011 2 BL5820F01011 3 LED CBA Top View LED CBA Bottom View...

Page 45: ...8 19 Inverter CBA Top View BL4400F01022...

Page 46: ...8 20 Inverter CBA Bottom View BL4400F01022...

Page 47: ...at Waveform check points Shown in Schematic Diagram S VIDEO Y 0 2V WF2 Pin 14 of CN103A 20 s S VIDEO C 0 2V WF3 Pin 13 of CN103A 20 s COMPONENT Y 0 2V 20 s 20 s Pin 6 of CN103A WF4 COMPONENT Pr 0 2V...

Page 48: ...h 1kHz Audio Signal WF7 WF10 Waveforms to be observed at Waveform check points Shown in Schematic Diagram B 0 5V WF7 Pin 13 of CN104A WF8 Pin 14 of CN104A WF9 Pin 15 of CN104A AUDIO 0 5V 0 5ms WF10 Pi...

Page 49: ...N703 1 3 2 5 4 7 6 8 9 10 12 11 GND GND GND INV 24V INV 24V INV 24V INV 24V INV 24V INV 24V INV 24V INV 24V GND NU NU NU CN102A 1 3 2 5 4 7 6 8 9 10 13 12 11 14 15 17 16 19 18 21 20 22 23 PROTECT 1 PR...

Page 50: ...L2 L6 L5 L5 L5 L1 L1 L1 L1 L1 L9 L9 L4 L3 L3 L3 L3 L3 L3 L5 L8 L8 L8 L8 L8 L13 L10 L10 L10 L8 L8 L8 B28 L3 L3 L5 L1 L5 L5 L5 B1 L3 L3 See Electrical Parts List for parts with this mark Main CBA Invert...

Page 51: ...cking Tape Packing Tape Packing Tape Packing Tape S7 Packing Tape Packing Tape Packing Tape FRONT X2 1 X2 2 X2 3 X2 4 X2 5 X2 6 X2 7 X2 8 A B X2 1 X2 7 X2 9 X2 10 X2 11 X2 12 X2 13 X2 14 D X2 2 X2 4 X...

Page 52: ...SCREW S TIGHT M3X6 BIND HEAD GBJS3060 L9 SCREW B TIGHT 3X10 BIND HEAD BLK GBHB3100 L10 SCREW P TIGHT M3X12 DISH HEAD GDJP3120 L13 DOUBLE SEMS SCREW M4X9 BLACK L0130UA 0EM408146A SP801 SPEAKER S0516F0...

Page 53: ...P085 C502 ELECTROLYTIC CAP 470 F 16V M or CE1CMASDL471 ELECTROLYTIC CAP 470 F 16V M or CE1CMASTM471 ELECTROLYTIC CAP 470 F 16V M CA1C471SP085 C503 ELECTROLYTIC CAP 3300 F 35V M or CE1GMZNDL332 CAP ELE...

Page 54: ...on Part No C612 ACROSS THE LINE CAP 0 1U 250V or CT2E104DC015 ACROSS THE LINE CAP 0 1 F 250V K or CT2E104DC011 METALIZED FILM CAP 0 1 F 250V CT2E104MS037 C613 ACROSS THE LINE CAP 0 1U 250V or CT2E104D...

Page 55: ...C814 ALUMINUM ELECTROLYTIC CAP 1000 F 35V M or CE1GMZNTM102 ELECTROLYTIC CAP 1000 F 35V M or CE1GMZPDL102 ELECTROLYTIC CAP 1000 F 35V M or CE1GMZADL102 ELECTROLYTIC CAP 1000 F 35V M CA1G102SP084 C815...

Page 56: ...HING DIODE KDS160E RTK P ND1ZKDS160EP D547 SWITCHING DIODE 1SS400 or QD1Z001SS400 SWITCHING DIODE KDS160E RTK P ND1ZKDS160EP Ref No Description Part No D548 RECTIFIER DIODE ERA22 02 QDPZ0ERA2202 D549...

Page 57: ...R DIODE EDZTE61 5 6B or QD1B00EDZ5R6 DIODE ZENER SMD 015AZ5 6 Y QD1Y015AZ5R6 D986 ZENER DIODE EDZTE61 5 6B or QD1B00EDZ5R6 DIODE ZENER SMD 015AZ5 6 Y QD1Y015AZ5R6 Ref No Description Part No D987 ZENER...

Page 58: ...10W J 100 RRXA101YF002 R33 CHIP RES 1 10W J 100 or RRXAJR5Z0101 RES CHIP 1608 1 10W J 100 RRXA101YF002 Ref No Description Part No R39 CHIP RES 1608 1 10W 0 or RRXAJR5Z0000 RES CHIP 1608 1 10W J 0 RRXA...

Page 59: ...611 CARBON RES 1 4W J 820k RCX4JATZ0824 R612 PCB JUMPER D0 6 P5 0 JW5 0T Ref No Description Part No R613 CARBON RES 1 4W J 220k RCX4JATZ0224 R614 PCB JUMPER D0 6 P5 0 JW5 0T R615 CARBON RES 1 4W J 560...

Page 60: ...CHIP RES 1 10W J 1 2k or RRXAJR5Z0122 Ref No Description Part No RES CHIP 1608 1 10W J 1 2k RRXA122YF002 R810 CHIP RES 1 10W J 1 2k or RRXAJR5Z0122 RES CHIP 1608 1 10W J 1 2k RRXA122YF002 R811 CHIP RE...

Page 61: ...L DIN 435C JYEL040YUQ02 JK704 JACK RGB PCB L SC 201Z4 JXGL420SNJ01 JS501 PCB JUMPER D0 6 P5 0 JW5 0T JS502 PCB JUMPER D0 6 P15 0 JW15 0T L4 SCREW B TIGHT D3X8 BIND HEAD GBJB3080 SA601 SURGE ABSORBER 4...

Page 62: ...CHIP CERAMIC CAP 1608 B K 0 1 F 50V CHD1JK30B104 C1104 CHIP CERAMIC CAP CH J 180pF 50V CHD1JJBCH181 C1105 CHIP CERAMIC CAP CH J 180pF 50V CHD1JJBCH181 C1106 CHIP CERAMIC CAP CH J 180pF 50V CHD1JJBCH1...

Page 63: ...ODE ERA81 004Q QDLZRA81004Q D1264 SWITCHING DIODE 1SS133 T 77 QDTZ001SS133 D1265 SWITCHING DIODE 1SS133 T 77 QDTZ001SS133 D1266 SWITCHING DIODE 1SS133 T 77 QDTZ001SS133 D1267 SWITCHING DIODE 1SS133 T...

Page 64: ...0W J 68 or RRXAJR5Z0680 RES CHIP 1608 1 10W J 0 or RRXA000YF002 RES CHIP 1608 1 10W J 68 RRXA680YF002 Ref No Description Part No R1101 CHIP RES 1608 1 10W 0 or RRXAZR5Z0000 CHIP RES 1 10W J 68 or RRXA...

Page 65: ...HIP RES 1 10W J 1k or RRXAJR5Z0102 RES CHIP 1608 1 10W J 1 0k RRXA102YF002 R1500 CHIP RES 1 10W F 9 1k or RRXAFR5H9101 CHIP RES 1608 1 10W F 9 1k or RRXAFR5Z9101 RES CHIP 1608 1 10W F 9 10k RTW9101YF0...

Page 66: ...060818 13 14 L5920EL Ref No Mark Description Part No MISCELLANEOUS AC601 A C D AC CORD CEE 1800MM BLACK WAE0182LW004 AC601 B AC CORD BS 1800MM BLACK WAB0182LW017 TU31 TUNER UNIT TMFE2X402A UTUNPSGAL01...

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