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JVC LT-19DA1BJ/AK Service Manual Download Page 49

2-18(No.YA683<Rev.001>)

(No.YA683<Rev.001>)2-17

CURRENT
CONTROL
SWITCH

Q408

Q410

Q402

Q406

Q405

Q404

Q403

Q401

Q411

CN401

LCD PANEL UNIT

BACK
LIGHT

BACK
LIGHT

1

2

CN402

1

2

TO POWER 
SUPPLY
BLOCK 
DIAGRAM
(CN105A)

INVERTER PWB

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

INV+22V

3,4

3,4

BACKLIGHT-SW

9

9

+35V

1

PROTECT3

8

FEEDBACK

2

INV+22V

3,4

BACKLIGHT-SW

9

JUNCTION
PWB

CN403B

CN403B

CL403

CN403A

CL403

CN403A

TO SYSTEM 
CONTROL
BLOCK 
DIAGRAM
(CN105A)

INVERTER BLOCK DIAGRAM

!

!

Summary of Contents for LT-19DA1BJ/AK

Page 1: ...INTEGRATED DIGITAL TERRESTRIAL LCD TELEVISION YA683 Rev 001 2009 3 SERVICE MANUAL LT 19DA1BJ AK LT 19DA1BU AK COPYRIGHT 2009 Victor Company of Japan Limited TABLE OF CONTENTS 1 PRECAUTION 1 3 2 SPECIFIC SERVICE INSTRUCTIONS 1 6 3 DISASSEMBLY 1 10 4 ADJUSTMENT 1 13 5 TROUBLESHOOTING 1 16 ...

Page 2: ...ker 3 0 cm 11 0 cm oval type 2 Aerial terminal VHF UHF 75 Ω unbalanced coaxial 1 EXT 1 Input S Video Mini DIN 4 pin 1 Y 1 V p p Positive Negative sync provided 75 Ω C 0 286 V p p Burst signal 75 Ω Video 1V p p Positive Negative sync provided 75 Ω RCA pin jack 1 Audio 500 mV rms High impedance RCA pin jack 2 EXT 2 Input Output 21 pin Euro connector SCART socket 1 EXT 3 Input Component Video 750p 11...

Page 3: ...components that indicate evidence of overheating should be replaced Always use the manufacturer s replacement components 6 Isolation Check Safety for Electrical Shock Hazard After re assembling the product always perform an isola tion check on the exposed metal parts of the cabinet an tenna terminals video audio input and output terminals Control knobs metal cabinet screw heads earphone jack contr...

Page 4: ... and dressed with ties clamps tubing s barriers and the like to be separated from live parts high temperature parts moving parts and or sharp edges for the prevention of electric shock and fire hazard When service is required the original lead routing and dress should be observed and it should be confirmed that they have been returned to normal after re assembling WARNING 1 The equipment has been ...

Page 5: ...erly packed Continuous vibration may shift the gap of the panel and the unit may not be able to display images properly Ensure that the unit is carried by at least 2 persons and pay careful attention not to exert any vibration or impact on it 4 DO NOT PLACE EQUIPMENT HORIZONTALLY Ensure that it is placed upright and not horizontally during transportation and storage as the LCD panel is very vulner...

Page 6: ...ttings automatically There are Standard Dynamic Movie and News in the PICTURE MODE ZOOM This function can change the screen size according to the picture aspect ratio 2 2 MAIN DIFFERENCE LIST Items Contents LT 19DA9BJ LT 19DA9BU Teletext System Digital MHEG 5 UK profile EBU TEXT POWER CORD UK TYPE 3 pins EU TYPE 2 pins MAIN PWB FU 1ESA19688 1 FU 1ESA19148 1 FUNCTION PWB FU 1ESA19688 2 FU 1ESA19148...

Page 7: ...t Pack IC about 5 to 6 seconds Fig 2 1 Fig 2 1 2 Remove the flat pack IC with tweezers while applying the hot air 3 Bottom of the flat pack IC is fixed with glue to the PWB 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 2 6 4 Release the flat pack IC from the PWB using tweezers Fig 2 6 CAUTION 1 The Flat Pa...

Page 8: ...x which is applied to all pins of the flat pack IC you can remove it easily Fig 2 3 2 Affix the wire to a workbench or solid mounting point as shown in Fig 2 5 3 While heating the pins using a fine tip soldering iron or hot air blower pull up the wire as the solder melts so as to lift the IC leads from the PWB contact pads as shown in Fig 2 5 4 Bottom of the flat pack IC is fixed with glue to the ...

Page 9: ...semi conductors may occur due to a potential difference caused by electrostatic charge during unpacking or repair work 2 3 5 1 GROUND FOR HUMAN BODY Be sure to wear a grounding band 1MΩ that is properly grounded to remove any static electricity that may be charged on the body 2 3 5 2 GROUND FOR WORKBENCH Be sure to place a conductive sheet or copper plate with proper grounding 1MΩ on the workbench...

Page 10: ...rews S 2 2 L 2 two Locking Tabs L 2 5 Refer to the following Reference Notes in the Table 7 Digital Main Unit 5 Jack PWB 12 IR Sensor PWB 1 Stand Cover 2 Stand Neck 4 Rear Cabinet 13 Function PWB 15 Speaker s 3 Stand Hinge 6 Shield Box 16 Front Cabinet 9 Main PWB 8 Shield T 11 Inverter PWB 10 Junction PWB 14 LCD Module Assembly Step Loc No Part Removal Fig No Remove Unhook Unlock Release Unplug Un...

Page 11: ... No YA683 Rev 001 1 11 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 ...

Page 12: ...ield Box 10 Junction PWB 11 Inverter PWB 16 Front Cabinet 9 Main PWB 8 Shield T 13 Function PWB 15 Speaker S 9 S 5 S 5 S 6 S 12 S 11b S 11b S 11a S 12 7 Digital Main Unit 14 LCD Module Assembly S 13 S 13 S 7 S 8 S 8 S 8 S 12 15 Speaker Connector IC Card OSU FFC Shield Fig D2 ...

Page 13: ... REQUIRED 1 Pattern Generator 2 Color Analyzer 4 3 HOW TO ENTER THE SERVICE MODE 1 Turn the power on 2 While pressing MUTE button press i button on the remote control unit 4 4 PURITY CHECK MODE This mode cycles through full screen displays of red green blue and white to check for non active pixels 1 Enter the Service mode 2 Each time pressing 7 key on the service remote control unit the display ch...

Page 14: ...r to the CHROMA mode and bring the optical receptor to the center on the LCD Panel surface af ter zero point calibration as shown above NOTE The optical receptor must be set perpendicularly to the LCD Panel surface 4 Enter the Service mode Press VOLUME button on the service remote control unit and select C D mode 5 CUTOFF Press 3 key to select COB for Blue Cutoff adjustment Press 1 key to select C...

Page 15: ...key on the remote control unit 3 Press AV key on the service remote control unit to initial ize the LCD television 4 INITIALIZED will appear in the upper right of the screen INITIALIZED color will change to green from red when initializing is complete INDICATION DESCRIPTION Safety_Non The power supply circuit is normal Safety1 The power supply circuit is abnormal Protect1 Safety2 The reduced volta...

Page 16: ...e presence that the rectifying diode or circuit is shorted in each rectifying circuit of secondary side and service it if defective After servicing replace the fuse F601 When the output voltage fluctuates FLOW CHART NO 3 Does the photocoupler circuit on the secondary side operate normally No Yes Check IC601 Q900 D913 and their periphery and service it if defective When buzz sound can be heard in t...

Page 17: ...924 C917 and their periphery circuit and service it if defective Check Q901 D916 and their periphery circuit and service it if defective Is approximately 8V voltage supplied to the collector of Q936 Replace Q936 No See FLOW CHART No 9 LCD 24 5V is not output FLOW CHART NO 9 Yes No Is approximately 38V voltage supplied to the cathode of D903 Is approximately 38V voltage supplied to the collector of...

Page 18: ...riphery circuit and service it if defective Yes No Yes Replace Q908 Yes Replace Q902 Replace Q922 See FLOW CHART No 9 No Check D924 C917 and their periphery circuit and service it if defective No Check D920 R930 and their periphery circuit and service it if defective No LCD 6 8V is not output FLOW CHART NO 11 Is approximately 12V voltage supplied to the anode of D905 Is approximately 11V voltage s...

Page 19: ...NO 14 Is approximately 5V voltage supplied to the Pin 1 of IC902 Yes Check D900 C900 and their periphery circuit and service it if defective Check D904 C904 and their periphery circuit and service it if defective No When pressing each switches SW201 SW202 SW203 SW204 SW205 SW206 SW207 do the voltage of Pin 1 on CN104A increase Yes No The key operation is not functioning FLOW CHART NO 16 Are the co...

Page 20: ...gnal line and service it if defective Check the component video Y Pb Pr signal line and service it if defective Check the line between each pin of CN101A and CN102A and input terminal and service it if defective No No No No No Yes Are the luminance signals outputted to the Pin 23 of CN101A Are the chrominance signals outputted to the Pin 25 of CN101A Are the component video Y Pb Pr signals outputt...

Page 21: ...3 4 of CN103A No Yes Check the line between Pin 3 4 of CN103A and each Audio input terminal JK14 JK15 JK723 JK724 JK725 JK751 and IC850 and service it if defective Audio is not outputted normally Audio input terminals FLOW CHART NO 21 No Are the audio L R signals outputted to the Pin 14 15 of IC802 No Yes Are the audio data signal outputted to the Pin 13 of CN101A Yes Check IC802 and the periphery...

Page 22: ... No YA683 Rev 001 VPT Printed in Japan Victor Company of Japan Limited Display Division 12 3 chome Moriya cho Kanagawa ku Yokohama city Kanagawa prefecture 221 8528 Japan ...

Page 23: ...e Capacitor MF R Metal Film Resistor MF CAP Metalized Film Capacitor MG R Metal Glazed Resistor MM CAP Metalized Mylar Capacitor MP R Metal Plate Resistor MP CAP Metalized Polystyrol Capacitor OM R Metal Oxide Film Resistor PP CAP Polypropylene Capacitor CMF R Coating Metal Film Resistor PS CAP Polystyrol Capacitor UNF R Non Flammable Resistor TF CAP Thin Film Capacitor CH V R Chip Variable Resist...

Page 24: ...0 MAIN P W BOARD ASS Y FU 1ESA19148 1 3 10 FUNCTION P W BOARD ASS Y FU 1ESA19148 2 3 12 IR SENSOR P W BOARD ASS Y FU 1ESA19148 3 3 12 JACK P W BOARD ASS Y FU 1ESA19148 4 3 12 INVERTER P W BOARD ASS Y FU 1ESA19502 1 3 13 JUNCTION P W BOARD ASS Y FU 1ESA19502 2 3 13 PACKING 3 14 PACKING PARTS LIST 3 15 USING P W BOARD P W B ASS Y name P W B ASS Y No LT 19DA1BJ AK LT 19DA1BU AK MAIN P W B FU 1ESA1968...

Page 25: ...P3100 SCREW M3x10 x7 42 FU GBHP4180 SCREW M4x18 x2 43 FU GBHS3060 SCREW M3x6 x2 44 FU GBHS3040 SCREW M3x4 x2 50 FU WX1A8CN0 012 WIRE ASSEMBLY 7pin CL107 51 FU WX1A8CN0 013 WIRE ASSEMBLY 2pin CL451 52 FU WX1A8CN0 013 WIRE ASSEMBLY 2pin CL802 53 FU WX1A8CN0 006 WIRE ASSEMBLY 25pin CL3601 54 FU WX1A8CN0 006 WIRE ASSEMBLY 25pin CL3701 55 FU WX1A8CN0 005 WIRE ASSEMBLY 23pin CL3704 56 FU WX1A8A70 101 FF...

Page 26: ...PLODED VIEW 35 35 37 37 106 106 105 105 101 101 35 35 38 38 32 32 35 35 54 54 53 53 3 3 35 35 35 35 35 35 35 35 7 7 35 35 103 103 102 102 57 57 56 56 33 33 52 52 5 5 4 4 33 33 22 22 6 6 51 51 11 11 33 33 39 39 39 39 33 33 2 2 ...

Page 27: ...4 104 12 12 31 31 13 13 16 16 29 29 36 36 36 36 41 41 42 42 41 41 10 10 43 43 41 41 1 1 25 25 39 39 41 41 25 25 35 35 39 39 25 25 35 35 35 35 28 28 50 50 35 35 26 26 35 35 59 59 55 55 7 7 107 107 TU1 TU1 40 40 58 58 4 4 27 27 44 44 35 35 40 40 30 30 35 35 ...

Page 28: ...FU QDTZ001SS133 SI DIODE D987 FU QDTZ001SS133 SI DIODE D988 FU QDTZ001SS133 SI DIODE D989 FU QDTZ001SS133 SI DIODE D990 FU QDLZ030PHA20 SB DIODE C102 FU CHD1JJ3CH102 C CAPACITOR 1000pF 50V J C103 FU CHD1JJ3CH102 C CAPACITOR 1000pF 50V J C104 FU CHD1JZ30F104 C CAPACITOR 0 1uF 50V C105 FU CHD1JZ30F104 C CAPACITOR 0 1uF 50V C508 FU CHD1JK30B103 C CAPACITOR 0 01uF 50V K C510 FU CE1AMASDL101 E CAPACITO...

Page 29: ... 1 10W J Ref No Part No Part Name Description Local R739 FU RRXAJR5Z0473 MG RESISTOR 47kΩ 1 10W J R740 FU RRXAJR5Z0470 MG RESISTOR 470Ω 1 10W J R741 FU RCX4JATZ0561 C RESISTOR 560Ω 1 4W J R746 FU RCX4JATZ0561 C RESISTOR 560Ω 1 4W J R751 FU RRXAJR5Z0750 MG RESISTOR 75Ω 1 10W J R752 FU RCX4JATZ0101 C RESISTOR 100Ω 1 4W J R756 FU RCX4JATZ0153 C RESISTOR 15kΩ 1 4W J R757 FU RRXAJR5Z0512 MG RESISTOR 5 ...

Page 30: ...Z0272 C RESISTOR 2 7kΩ 1 4W J R986 FU RRXAFR5H2400 MG RESISTOR 240Ω 1 10W F R987 FU RRXAJR5Z0101 MG RESISTOR 100Ω 1 10W J R994 FU RRXAFR5H3301 MG RESISTOR 3 3kΩ 1 10W F R995 FU RRXAFR5H0433 MG RESISTOR 43kΩ 1 10W F R997 FU RN02R22ZU001 O M F RESISTOR 0 22Ω 2W J L501 FU LLARKBSTU100 INDUCTOR 10uH L502 FU LLARKBSTU100 INDUCTOR 10uH L601 FU LLEG0Z0XB008 LINE FILTER L701 FU LLAXJATTU2R2 INDUCTOR 2 2uH...

Page 31: ...451 FU CHD1JK30B102 C CAPACITOR 1000pF 50V K R401 FU RRXAJR5Z0152 MG RESISTOR 1 5kΩ 1 10W J R402 FU RCX4JATZ0273 C RESISTOR 27kΩ 1 4W J R404 FU RRXAJR5Z0332 MG RESISTOR 3 3kΩ 1 10W J R405 FU RRXAJR5Z0103 MG RESISTOR 10kΩ 1 10W J R406 FU RCX4JATZ0101 C RESISTOR 100Ω 1 4W J R407 FU RCX4JATZ0101 C RESISTOR 100Ω 1 4W J R408 FU RCX4JATZ0101 C RESISTOR 100Ω 1 4W J R409 FU RCX4JATZ0101 C RESISTOR 100Ω 1 ...

Page 32: ... FU QDTZ001SS133 SI DIODE D987 FU QDTZ001SS133 SI DIODE D988 FU QDTZ001SS133 SI DIODE D989 FU QDTZ001SS133 SI DIODE D990 FU QDLZ030PHA20 SB DIODE C102 FU CHD1JJ3CH102 C CAPACITOR 1000pF 50V J C103 FU CHD1JJ3CH102 C CAPACITOR 1000pF 50V J C104 FU CHD1JZ30F104 C CAPACITOR 0 1uF 50V C105 FU CHD1JZ30F104 C CAPACITOR 0 1uF 50V C508 FU CHD1JK30B103 C CAPACITOR 0 01uF 50V K C510 FU CE1AMASDL101 E CAPACIT...

Page 33: ...Ω 1 10W J Ref No Part No Part Name Description Local R739 FU RRXAJR5Z0473 MG RESISTOR 47kΩ 1 10W J R740 FU RRXAJR5Z0470 MG RESISTOR 470Ω 1 10W J R741 FU RCX4JATZ0561 C RESISTOR 560Ω 1 4W J R746 FU RCX4JATZ0561 C RESISTOR 560Ω 1 4W J R751 FU RRXAJR5Z0750 MG RESISTOR 75Ω 1 10W J R752 FU RCX4JATZ0101 C RESISTOR 100Ω 1 4W J R756 FU RCX4JATZ0153 C RESISTOR 15kΩ 1 4W J R757 FU RRXAJR5Z0512 MG RESISTOR 5...

Page 34: ...Z0272 C RESISTOR 2 7kΩ 1 4W J R986 FU RRXAFR5H2400 MG RESISTOR 240Ω 1 10W F R987 FU RRXAJR5Z0101 MG RESISTOR 100Ω 1 10W J R994 FU RRXAFR5H3301 MG RESISTOR 3 3kΩ 1 10W F R995 FU RRXAFR5H0433 MG RESISTOR 43kΩ 1 10W F R997 FU RN02R22ZU001 O M F RESISTOR 0 22Ω 2W J L501 FU LLARKBSTU100 INDUCTOR 10uH L502 FU LLARKBSTU100 INDUCTOR 10uH L601 FU LLEG0Z0XB008 LINE FILTER L701 FU LLAXJATTU2R2 INDUCTOR 2 2uH...

Page 35: ...No YA683 Rev 001 3 13 INVERTER P W BOARD ASS Y FU 1ESA19502 1 REFER TO PARTS LIST IN PAGE 3 9 FOR THIS P W BOARD JUNCTION P W BOARD ASS Y FU 1ESA19502 2 REFER TO PARTS LIST IN PAGE 3 9 FOR THIS P W BOARD ...

Page 36: ...3 14 No YA683 Rev 001 PACKING FRONT FRONT Tape Packing Tape Packing Tape Packing Tape Packing Tape SERIAL NO LABEL 1 1 3 3 3 3 10 10 4 4 7 7 12 12 13 13 6 6 2 2 14 14 ...

Page 37: ...ON Not supply 3 BOTTOM CUSHION Not supply 4 SET BAG Not supply 6 STAND BAG Not supply 7 WARRANTY CARD BT 54038 1L 10 POLY BAG Not supply 235mmx365mm 12 FU 1EMN24540 INST BOOK English LT 19DA1BJAK 12 FU 1EMN24539 INST BOOK English French German Spanish Czech LT 19DA1BUAK 13 RM C1893B REMOTE CONTROL UNIT 14 BATTERY x2 ...

Page 38: ...DVD ROM No SML2008Q4 COPYRIGHT 2009 Victor Company of Japan Limited No YA683 Rev 001 2009 3 SCHEMATIC DIAGRAMS INTEGRATED DIGITAL TERRESTRIAL LCD TELEVISION LT 19DA1BJ AK LT 19DA1BU AK ...

Page 39: ...Power Supply Type MM Metalized mylar capacitor PP Polypropylene capacitor MPP Metalized polypropylene capacitor MF Metalized film capacitor TF Thin film capacitor BP Bipolar electrolytic capacitor TAN Tantalum capacitor 3 Coils No unit Others µH As specified No indication Ceramic capacitor 2 Capacitors Capacitance value 1 or higher pF less than 1 µF Withstand voltage No indication DC50 V Others DC...

Page 40: ...AM 2 19 CIRCUIT DIAGRAMS 2 21 MAIN PWB CIRCUIT DIAGRAM 2 21 MAIN 2 3 AND JACK PWB CIRCUIT DIAGRAM 2 23 INVERTER AND JUNCTION PWB CIRCUIT DIAGRAM 2 27 FUNCTION PWB CIRCUIT DIAGRAM 2 29 IR SENSOR PWB CIRCUIT DIAGRAM 2 31 DIGITAL MAIN PWB CIRCUIT DIAGRAM 2 33 PATTERN DIAGRAMS 2 45 MAIN PWB PATTERN 2 45 INVERTER PWB PATTERN 2 47 FUNCTION PWB PATTERN 2 47 IR SENSOR PWB PATTERN 2 47 JACK PWB PATTERN 2 4...

Page 41: ...E C B E C B No YA683 Rev 001 2 3 USING P W BOARD P W B ASS Y name MAIN P W BOARD FUNCTION P W BOARD IR SENSOR P W BOARD JACK P W BOARD INVERTER P W BOARD JUNCTION P W BOARD DIGITAL MAIN P W BOARD FU 1ESA19688 1 FU 1ESA19688 2 FU 1ESA19688 3 FU 1ESA19688 4 FU 1ESA19502 1 FU 1ESA19502 2 FU 1ESA19709 LT 19DA1BJ AK LT 19DA1BU AK FU 1ESA19148 1 FU 1ESA19148 2 FU 1ESA19148 3 FU 1ESA19148 4 FU 1ESA19153 ...

Page 42: ... CN202 CN401 CN4501 CN4502 CN11 DIGITAL MAIN PWB JACK PWB To Speaker CN201 JUNCTION PWB CN3704 CN4503 CN3701 CN3601 CN103A CN102A CN101A CN104A INVERTER PWB To LCD PANEL UNIT CN403B CN403A CL403 To LCD PANEL UNIT CN107 To Speaker WIRING DIAGRAM TV CABLE 2 4 No YA683 Rev 001 ...

Page 43: ...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 15 17 19 23 21 20 22 25 21 23 17 19 24 22 20 18 16 12 14 8 10 15 13 11 9 7 3 GND 24 2 VIDEO 25 1 5 6 4 CL802 1 CN802 2 SP L SP GND SP802 SPEAKER L CH JACK PWB CN201 CN106 1 3 2 4 5 GND REMOTE AL 3 3V P ON...

Page 44: ...ESET 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 PWM 21 VCOM PWM AA2 AMP MUTE MAIN AMP MUTE SCL SDA 19 20 IC3102 MEMORY 5 6 SDA SCL PROTECT2 RESET 23 PROTECT1 21 5 CN101A CN3701 PROTECT2 20 6 RESET 17 9 PROTECT3 19 7 PROTECT3 4 IC3706 MEMORY SPI CLK SPI DO SPI DI SPI CS SCK...

Page 45: ... 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 SCL SDA TO SYSTEM CONTROL BLOCK DIAGRAM AUDIO SIGNAL INPUT2 TO SYSTEM CONTROL BLOCK DIAGRAM MAIN PWB DIGITAL MAIN PWB 15 11 7 VIDEO B VIDEO G VIDEO R JK721 S VIDEO IN C Y 8 19 20 VIDEO IN VIDEO OUT SLOW S...

Page 46: ... 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 CONTROL BLOCK DIAGRAM MAIN PWB IC850 INPUT SELECT SW CTL 13 1 2 4 5 12 11 14 9 10 L CH R CH AUDIO L IN JK723 JK724 AUDIO R IN 3 15 JK751 3 1 AUDIO L OUT AUDIO R OUT 6 AUDIO L IN 2 AUDIO R IN IC851 INPUT SELE...

Page 47: ... SPEAKER L CH CN802 CL802 SP L 1 SP GND 2 MAIN PWB 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 CN3701 AMP MUTE 9 17 ACLK BCLK LRCLK ADATA TO DIGITAL SIGNAL PROCESS BLOCK DIAGRAM AMP MUTE TO SYSTEM CONTROL BLOCK DIAGRAM JUNCTION PWB SP R 11 11 SP R 11 11 CN403A CN105A CN403B CL403 INVERTER PWB Q802 SWITCHI...

Page 48: ...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 DIAGRAM SW W3 U3 V3 V4 Y2 Y1 AA1 COMP Pb T3 COMP Y U4 T4 TU CVBS Y3 VGA HSYNC VGA VSYNC HDMI IN1 JK4001 TMDS D0 TMDS D0 TMDS D1 TMDS D1 TMDS D2 TMDS D2 SDA SCL 7 9 4 6 1 3 10 12 16 15 A9 B9 C8 C9 B8 A8 B10 A10 E9 C10 Q4002 BUF...

Page 49: ...K DIAGRAM CN105A INVERTER PWB 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 INV 22V 3 4 3 4 BACKLIGHT SW 9 9 35V 1 PROTECT3 8 FEEDBACK 2 INV 22V 3 4 BACKLIGHT SW 9 JUNCTION PWB CN403B CN403B CL403 CN403A CL403 CN403A TO SYSTEM CONTROL BLOCK DIAGRAM CN105A INVERTER BLOCK DIAGRAM ...

Page 50: ... 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 LCD 13V P ON 3 3V 3 5V 3 0V LCD 3 3V AL 3 3V P ON 5V P ON 9V DIGITAL MAIN PWB TO INVERTER BLOCK DIAGRAM CL403 NOTE The voltage for parts in hot circuit is measured using hot GND as a common terminal CAUTION ...

Page 51: ...U 1ESA19688 1 LT 19DA1BJ AK FU 1ESA19148 1 LT 19DA1BU AK A8CN8SCM1_12 15_1 3_0 0 CIRCUIT DIAGRAMS MAIN PWB CIRCUIT DIAGRAM 1 3 MAIN PWB 3 3 DIGITAL MAIN PWB 5 6 CN3704 DIGITAL MAIN PWB 2 6 CN3701 MAIN PWB 2 3 MAIN PWB 3 3 MAIN PWB 2 3 FUNCTION PWB CN201 MAIN PWB 3 3 ...

Page 52: ...1ESA19688 1 LT 19DA1BJ AK FU 1ESA19148 1 LT 19DA1BU AK JACK PWB ASS Y FU 1ESA19688 4 LT 19DA1BJ AK FU 1ESA19148 4 LT 19DA1BU AK MAIN PWB 1 3 MAIN PWB 1 3 MAIN PWB 1 3 DIGITAL MAIN PWB 2 6 CN4503 MAIN PWB 3 3 A8CN8SCM2_1215_2 3_0 0 MAIN 2 3 AND JACK PWB CIRCUIT DIAGRAM ...

Page 53: ...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 connect the AC plug to the AC power supply Otherwise it may cause some components in the power supply circuit to fail CAUTION For continued protection against fire hazard replace only with the same type fuse NOTE The voltage for p...

Page 54: ...683 Rev 001 2 27 2 28 No YA683 Rev 001 MAIN PWB 3 3 CN105A INVERTER PWB ASS Y FU 1ESA19502 1 JUNCTION PWB ASS Y FU 1ESA19502 2 A8CN8SCINV_1215_1 1_0 0 LCD PANEL UNIT INVERTER AND JUNCTION PWB CIRCUIT DIAGRAM ...

Page 55: ... No YA683 Rev 001 No YA683 Rev 001 2 29 FUNCTION PWB ASS Y FU 1ESA19688 2 LT 19DA1BJ AK FU 1ESA19148 2 LT 19DA1BU AK MAIN PWB 1 3 CN106 IR SENSOR PWB CN301 A8CN8SCF_1215_1 1_0 0 FUNCTION PWB CIRCUIT DIAGRAM ...

Page 56: ... No YA683 Rev 001 2 31 2 32 No YA683 Rev 001 IR SENSOR PWB ASS Y FU 1ESA19688 3 LT 19DA1BJ AK FU 1ESA19148 3 LT 19DA1BU AK FUNCTION PWB CN202 A8CN8SCIR_1215_1 1_0 0 IR SENSOR PWB CIRCUIT DIAGRAM ...

Page 57: ...from that of actual IC4513 IC4513 is divided into five and shown as IC4513 1 5 IC4513 5 5 in this Digital Main Schematic Diagram Section 1 NOTE DIGITAL MAIN PWB CIRCUIT DIAGRAM 1 6 LCD PANEL UNIT LCD PANEL UNIT DIGITAL MAIN PWB 3 6 DIGITAL MAIN PWB 6 6 DIGITAL MAIN PWB 3 6 OPEN DIGITAL MAIN PWB 6 6 This schematic is only for reference Avoid replacing individual parts Relpace the entire PWB ASS Y o...

Page 58: ...actual IC4513 IC4513 is divided into five and shown as IC4513 1 5 IC4513 5 5 in this Digital Main Schematic Diagram Section 1 NOTE DIGITAL MAIN PWB CIRCUIT DIAGRAM 2 6 DIGITAL MAIN PWB 5 6 DIGITAL MAIN PWB 3 6 DIGITAL MAIN PWB 6 6 MAIN PWB 2 3 CN102A DIGITAL MAIN PWB 5 6 DIGITAL MAIN PWB 3 6 MAIN PWB 1 3 CN101A This schematic is only for reference Avoid replacing individual parts Relpace the entir...

Page 59: ...C4513 5 5 in this Digital Main Schematic Diagram Section 1 NOTE DIGITAL MAIN PWB CIRCUIT DIAGRAM 3 6 DIGITAL MAIN PWB 6 6 DIGITAL MAIN PWB 4 6 DIGITAL MAIN PWB 4 6 DIGITAL MAIN PWB 6 6 DIGITAL MAIN PWB 2 6 DIGITAL MAIN PWB 6 6 DIGITAL MAIN PWB 1 6 DIGITAL MAIN PWB 5 6 DIGITAL MAIN PWB 1 6 DIGITAL MAIN PWB 2 6 DIGITAL MAIN PWB 5 6 DIGITAL MAIN PWB 6 6 DIGITAL MAIN PWB 2 6 OPEN This schematic is onl...

Page 60: ...t of actual IC4513 IC4513 is divided into five and shown as IC4513 1 5 IC4513 5 5 in this Digital Main Schematic Diagram Section 1 NOTE DIGITAL MAIN PWB CIRCUIT DIAGRAM 4 6 DIGITAL MAIN PWB 6 6 DIGITAL MAIN PWB 3 6 DIGITAL MAIN PWB 5 6 DIGITAL MAIN PWB 3 6 DIGITAL MAIN PWB 6 6 HDMI CONNECTOR 1 CI CARD SLOT This schematic is only for reference Avoid replacing individual parts Relpace the entire PWB...

Page 61: ...CN8SCD5_1215_5 6_0 0 DIGITAL MAIN PWB CIRCUIT DIAGRAM 5 6 DIGITAL MAIN PWB 3 6 DIGITAL MAIN PWB 6 6 DIGITAL MAIN PWB 3 6 DIGITAL MAIN PWB 2 6 MAIN PWB 1 3 CN103A DIGITAL MAIN PWB 2 6 DIGITAL MAIN PWB 4 6 DIGITAL MAIN PWB 3 6 This schematic is only for reference Avoid replacing individual parts Relpace the entire PWB ASS Y only ...

Page 62: ...13 IC4513 is divided into five and shown as IC4513 1 5 IC4513 5 5 in this Digital Main Schematic Diagram Section 1 NOTE DIGITAL MAIN PWB CIRCUIT DIAGRAM 6 6 DIGITAL MAIN PWB 5 6 DIGITAL MAIN PWB 4 6 DIGITAL MAIN PWB 2 6 DIGITAL MAIN PWB 1 6 DIGITAL MAIN PWB 3 6 MAIN PWB 3 3 CN104A DIGITAL MAIN PWB 4 6 DIGITAL MAIN PWB 3 6 This schematic is only for reference Avoid replacing individual parts Relpac...

Page 63: ...2 46 No YA683 Rev 001 No YA683 Rev 001 2 45 TOP PATTERN DIAGRAMS MAIN PWB PATTERN ...

Page 64: ... No YA683 Rev 001 2 47 2 48 No YA683 Rev 001 INVERTER PWB PATTERN FUNCTION PWB PATTERN IR SENSOR PWB PATTERN JACK PWB PATTERN JUNCTION PWB PATTERN TOP TOP FRONT TOP TOP TOP ...

Page 65: ...ms 0 5ms WF2 Pin 23 of CN101A S VIDEO Y S VIDEO Y 0 2V 0 2V 10 10µs WF3 Pin 25 of CN101A S VIDEO C S VIDEO C 0 2V 0 2V 20 20µs WF4 Pin 5 of CN102A B 0 5V 0 5V 5µs WF7 Pin 1 of CN102A WF5 Pin 4 of CN102A G 0 5V 0 5V 20 20µs VIDEO VIDEO 0 2V 0 2V 20 20µs WF6 Pin 3 of CN102A R 0 5V 0 5V 10 10µs VIDEO B VIDEO B 0 5V 0 5V 20 20µs VIDEO G VIDEO G 0 5V 0 5V 20 20µs VIDEO R VIDEO R 0 5V 0 5V 20 20µs WAVEF...

Page 66: ... No YA683 Rev 001 Display Division 12 3 chome Moriya cho Kanagawa ku Yokohama city Kanagawa prefecture 221 8528 Japan Victor Company of Japan Limited VPT Printed in Japan ...

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