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SERVICE MANUAL

This Service Manual is for the
LT6-M19WB(A8CNBFP) model.
For the LT6-M19WB(A8CNBFP)
model, the letter (A8CNBFP) is
printed on the Serial No. Label.
Refer to the Serial No. Label on the
right.

Serial No. Label

"A8CNBFP"

″

COLOR LCD TELEVISION

LT6-M19WB

Содержание LT6-M19WB

Страница 1: ...Manual is for the LT6 M19WB A8CNBFP model For the LT6 M19WB A8CNBFP model the letter A8CNBFP is printed on the Serial No Label Refer to the Serial No Label on the right Serial No Label A8CNBFP 19 COL...

Страница 2: ...5 1 How to Initialize the LCD Television 6 1 Block Diagrams 7 1 Schematic Diagrams CBA and Test Points 8 1 Waveforms 9 1 Wiring Diagram 10 1 Exploded View 11 1 Mechanical Parts List 12 1 Electrical Pa...

Страница 3: ...to 80 Description Condition Unit Nominal Limit 1 RECEIVED FREQ RANGE 60dBm 45ch 1 kHz kHz 1000 900 500 150 2 INPUT DYNAMIC RANGE mix max 1 VHF HIGH 7ch UHF 45ch dBm dBm 82 5 2 81 1 2 75 10 75 10 3 C N...

Страница 4: ...ow these specifications Limit specifications represent the absolute worst condition that still might be considered acceptable In no case should a unit fail to meet limit specifications Description Con...

Страница 5: ...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...

Страница 6: ...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...

Страница 7: ...PVC tubing 3 Spacers 4 Insulators for transistors E When replacing AC primary side components transformers power cord etc wrap ends of wires securely about the terminals before soldering F Observe tha...

Страница 8: ...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 between...

Страница 9: ...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...

Страница 10: ...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...

Страница 11: ...ccur 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 s...

Страница 12: ...to the following Reference Notes in the Table Step Loc No Part Removal Fig No Remove Unhook Unlock Release Unplug Unclamp Desolder Note 1 Stand Cover D1 2 S 1 2 Stand Neck D1 2 S 2 3 Stand Hinge D1 4...

Страница 13: ...4 2 A8CNBDC 4 Rear Cabinet S 4 S 4 S 1 S 2 S 3 S 4 1 Stand Cover 2 Stand Neck 3 Stand Hinge S 4 L 1 L 1 S 4 L 1 L 1 L 1 Fig D1...

Страница 14: ...x 10 Junction CBA 11 Inverter CBA 16 Front Cabinet 9 Main CBA 8 Shield T 13 Function CBA 15 Speaker S 8 S 5 S 5 H 1 S 12 S 11 S 11 S 10 S 12 7 Digital Main CBA Unit 14 LCD Module Assembly S 13 S 13 S...

Страница 15: ...2 CN451 CN301 Main CBA CN802 CN202 CN401 CN4501 CN4502 CN11 Digital Main CBA Unit Jack CBA To Speaker CN201 Junction CBA CN3704 CN4503 CN3701 CN3601 CN103A CN102A CN101A CN104A Inverter CBA To LCD Mod...

Страница 16: ...ts have been completed Also do not attempt these adjustments unless the proper equipment is available Test Equipment Required 1 DC Voltmeter 2 Pattern Generato 3 Color Analyzer How to make the Service...

Страница 17: ...above Note The optical receptor must be set perpendicularly to the LCD Panel surface 3 Enter the Service mode 4 VCOM1 Press 2 button on the service remote control unit VCOM2 Press 3 button on the ser...

Страница 18: ...the LCD Panel surface 4 Enter the Service mode Press button on the service remote control unit and select C D mode 5 CUTOFF Press 3 button to select COB for Blue Cutoff adjustment Press 1 button to se...

Страница 19: ...ce button on the service remote control unit Refer to page 5 1 To cancel the service mode Press button on the remote control unit 3 Press button on the service remote control unit to initialize the LC...

Страница 20: ...UTE SUB 18 REMOTE R22 RESET MAIN 5 RESET MAIN TO AUDIO 2 BLOCK DIAGRAM V24 LED1 4 4 REMOTE 2 2 P ON H1 5 5 CN201 KEY IN1 6 6 CN106 LED1 18 8 CN101A P ON H2 13 13 CN3701 KEY IN1 25 1 KEY IN1 24 VCOM PW...

Страница 21: ...EO G VIDEO B TO DIGITAL SIGNAL PROCESS BLOCK DIAGRAM S VIDEO Y S VIDEO C TO DIGITAL SIGNAL PROCESS BLOCK DIAGRAM COMP Pb COMP Y COMP Pr TS DATA TO DIGITAL SIGNAL PROCESS BLOCK DIAGRAM 25 26 SCL SDA SC...

Страница 22: ...ELECT SW CTL 13 12 15 10 9 11 1 2 14 IC3822 AUDIO D A CONVERTER D A CONVERTER L CH R CH 15 14 5 6 8 7 L CH R CH Q3831 BUFFER Q3832 BUFFER Q3833 Q3834 SCART MUTE CN3704 CN103A SIF 9 15 ADATA1 TO SYSTEM...

Страница 23: ...D 2 SP802 SPEAKER L CH CN802 CL802 SP L 1 SP GND 2 MAIN CBA MUTE STANDBY CONTROL IC802 AUDIO D A CONVERTER D A CONVERTER L CH R CH 15 14 5 6 7 8 ACLK 14 12 ADATA 13 13 BCLK 12 14 LRCLK 11 15 CN101A CN...

Страница 24: ...C3701 MEMORY 5 6 SDA SCL D SUB 3 12 15 1 2 RED GREEN BLUE DATA CLOCK JK3701 T5 R4 R3 R5 A D CONVERTER 14 13 HSYNC VSYNC K5 L5 COMP Pr VIDEO S VIDEO Y S VIDEO C VIDEO R VIDEO G VIDEO B TO VIDEO BLOCK D...

Страница 25: ...UPPLY BLOCK DIAGRAM CN105A INVERTER CBA OVER CURRENT PROTECTOR T401 12 11 13 14 9 4 5 10 7 2 1 6 8 3 SW 22V OVER VOLTAGE PROTECTOR Q412 OVER CURRENT PROTECTOR JS411 35V 1 1 PROTECT3 8 8 FEEDBACK 2 2 I...

Страница 26: ...18 AL 3 3V 3 23 P ON 5V 1 2 24 25 LCD 3 3V 12 14 P ON 9V 14 12 LCD 6 8V 10 16 LCD 13V 5 7 19 21 P ON 3 3V 15 17 9 11 3 5V 22 24 2 4 3 0V 18 19 7 8 Q908 SW 6 8V IC902 3 3V REG 1 2 4 LCD 24 5V LCD 6 8V...

Страница 27: ...in the schematic diagram and the parts list Before replacing any of these components read the parts list in this manual carefully The use of substitute replacement parts that do not have the same safe...

Страница 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...

Страница 29: ...8 3 A8CNBSCM1 Main 1 3 Schematic Diagram...

Страница 30: ...8 4 A8CNBSCM2 Main 2 3 Jack Schematic Diagram...

Страница 31: ...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...

Страница 32: ...8 6 A8CNBSCINV Inverter Junction Schematic Diagram...

Страница 33: ...8 7 Function Schematic Diagram A8CNBSCF...

Страница 34: ...8 8 IR Sensor Schematic Diagram A8CNBSCIR...

Страница 35: ...ain 1 6 Schematic Diagram The order of pins shown in this diagram is different from that of actual IC4513 IC4513 is divided into five and shown as IC4513 1 5 IC4513 5 5 in this Digital Main Schematic...

Страница 36: ...Main 2 6 Schematic Diagram The order of pins shown in this diagram is different from that of actual IC4513 IC4513 is divided into five and shown as IC4513 1 5 IC4513 5 5 in this Digital Main Schematic...

Страница 37: ...Main 3 6 Schematic Diagram The order of pins shown in this diagram is different from that of actual IC4513 IC4513 is divided into five and shown as IC4513 1 5 IC4513 5 5 in this Digital Main Schematic...

Страница 38: ...Main 4 6 Schematic Diagram The order of pins shown in this diagram is different from that of actual IC4513 IC4513 is divided into five and shown as IC4513 1 5 IC4513 5 5 in this Digital Main Schematic...

Страница 39: ...8 13 A8CNBSCD5 Digital Main 5 6 Schematic Diagram...

Страница 40: ...Main 6 6 Schematic Diagram The order of pins shown in this diagram is different from that of actual IC4513 IC4513 is divided into five and shown as IC4513 1 5 IC4513 5 5 in this Digital Main Schematic...

Страница 41: ...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...

Страница 42: ...voltage or Auto voltage selectable power supply circuit is used in this unit If Main Fuse F601 is blown check to see that all components in the power supply circuit are not defective before you connec...

Страница 43: ...8 17 BA8CN0F01023 1 Inverter CBA Top View...

Страница 44: ...8 18 BA8CN0F01023 1 Inverter CBA Bottom View...

Страница 45: ...8 19 IR Sensor CBA Top View Function CBA Top View Function CBA Bottom View BA8CN6F01013 2 BA8CN6F01013 3 IR Sensor CBA Bottom View...

Страница 46: ...8 20 Jack CBA Top View Jack CBA Bottom View BA8CN6F01013 4 Junction CBA Top Bottom View BA8CN0F01023...

Страница 47: ...hown in Schematic Diagram WF1 Pin 14 of IC801 AUDIO 0 1V 0 5ms WF2 Pin 23 of CN101A S VIDEO Y 0 2V 10 s WF3 Pin 25 of CN101A S VIDEO C 0 2V 20 s WF4 Pin 5 of CN102A B 0 5V 5 s WF7 Pin 1 of CN102A WF5...

Страница 48: ...2 P ON 5V 25 1 5 6 4 VIDEO R GND NU NU GND TU AUDIO L TU VIDEO TU AUDIO R GND P ON 9V NU GND NU NU GND GND NU FBIN1 SLOW SW1 NU NU CN102A VIDEO G VIDEO B CN4503 1 5 3 9 7 2 4 6 8 10 14 12 18 16 11 13...

Страница 49: ...1 SP802 Main CBA Inverter CBA Digital Main CBA Unit Jack CBA AC601 Function CBA IR Sensor CBA B20 L9 L9 L9 L10 B36 A4 L3 L10 L10 L37 L37 L10 L5 A24 L10 B9 L3 L17 B15 B3 L3 B3 A12 L30 L30 L25 LCD1 A9 L...

Страница 50: ...11 2 A8CNBPEX Packing S1 FRONT FRONT S2 S4 Tape Packing Tape S3 S3 X1 Some Ref Numbers are not in sequence X4 X3 Packing Tape Packing Tape Packing Tape S6 X2 4 S5...

Страница 51: ...04 WIRE ASSEMBLY 23PIN WX1A8CN0 005 WX1A8CN0 005 CL4501 WIRE ASSEMBLY FFC 55PIN FFC WIRE 55PIN 42MM WX1A8A70 101 CL4502 WIRE ASSEMBLY FFC 55PIN FFC WIRE 55PIN 42MM WX1A8A70 101 CL4503 WIRE ASSEMBLY 25...

Страница 52: ...AMIC CAP 1608 CH J 1000pF 50V CHD1JJ3CH102 C710 CHIP CERAMIC CAP 1608 CH J 100pF 50V CHD1JJ3CH101 C711 ELECTROLYTIC CAP 47 F 16V M H7 CE1CMAVSL470 C712 CHIP CERAMIC CAP 1608 B K 5600pF 50V CHD1JK30B56...

Страница 53: ...NT OSU S6B PH K S LF SN or J3PHC06JG030 CONNECTOR PRINT OSU C R 440055 6 or J344C06AP006 CONNECTOR PRINT OSU JS 1125R 06 J3JT06CHY003 CN107 FPC FFC CONNECTOR IMSA 9615S 07A PP A or JC96J07ER007 FMN CO...

Страница 54: ...DE SCHOTTKY 30PHA20 QDLZ030PHA20 ICS IC601 PHOTO COUPLER PS2561L1 1 A V L QPEL561L11AV IC801 IC AN17812A or QSZBA0SMS017 IC AUDIO SA7412 NSZBA0SQ0007 Ref No Description Part No IC802 IC AUDIO D A PCM1...

Страница 55: ...ANSISTOR POWER 2SC4881F HFE MAX320 or QQWZ2SC4881F TRANSISTOR PB FREE KTC2026 Y P or NQEYKTC2026P NPN TRANSISTOR STC403 NQEZ00STC403 Ref No Description Part No RESISTORS R102 CHIP RES 1 10W J 10 or RR...

Страница 56: ...00 or RCX4101T1001 RES CARBON FILM 1 4W J 100 RCX4101FS002 R761 CARBON RES 1 4W J 470 or RCX4JATZ0471 Ref No Description Part No RES CARBON FILM T 1 4W J 470 or RCX4471T1001 RES CARBON FILM 1 4W J 470...

Страница 57: ...J 100k or RRXAJR5Z0104 RES CHIP 1608 1 10W J 100k RRXA104YF002 Ref No Description Part No R847 CARBON RES 1 4W J 100k or RCX4JATZ0104 RES CARBON FILM T 1 4W J 100k or RCX4104T1001 RES CARBON FILM 1 4...

Страница 58: ...4W J 2 7k or RCX4JATZ0272 RES CARBON FILM T 1 4W J 2 7k or RCX4272T1001 Ref No Description Part No RES CARBON FILM 1 4W J 2 7k RCX4272FS002 R945 CHIP RES 1 10W J 10k or RRXAJR5Z0103 RES CHIP 1608 1 10...

Страница 59: ...CK HPEP SML PCB S PJ 358H or JXSJ020YUQ01 JACK HPEP SML PCB S 02 MSJ 035 29D ABS JXSJ020LY001 JK751 JACK RGB PCB S 21PIN MRC 021H 02 JXGJ210LY001 JK801 JACK SE HPEP SML PCM S MSJ 035 04A LF or JYSJ020...

Страница 60: ...Y031 JK15 JACK SW RCA PCB S RED RCA 102H RD or JYRJ010YUQ03 Ref No Description Part No JACK SW RCA PCB S RED 01 MTJ 032 04A 75 FE JYRJ010LY031 Ref No Description Part No MUT CBA Consists of the follow...

Страница 61: ...NPN TRANSISTOR 2SC5343MG AT NQSG2SC5343M RESISTORS R401 CHIP RES 1 10W J 1 5k or RRXAJR5Z0152 Ref No Description Part No RES CHIP 1608 1 10W J 1 5k RRXA152YF002 R402 CARBON RES 1 4W J 27k or RCX4JATZ...

Страница 62: ...OXIDE FILM RES 2W J 0 33 or RN02R33ZU001 METAL OXIDE FILM RES 2W J 0 33 RN02R33DP004 R455 CHIP RES 1 10W J 22k or RRXAJR5Z0223 RES CHIP 1608 1 10W J 22k RRXA223YF002 R456 CHIP RES 1608 1 10W 0 or RRXA...

Страница 63: ...LT6 M19WB A8CNBFP 2009 05 14...

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