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SERVICE MANUAL

COPYRIGHT © 2005 Victor Company of Japan, Limited

No.YA314

2005/10

WIDE LCD PANEL TELEVISION

YA314

2005

10

LT-26A60BU,
LT-26A60SJ, 
LT-26A60SU

TABLE OF CONTENTS

1

PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-3

2

SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-7

3

DISASSEMBLY  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-10

4

ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-15

5

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-19

BASIC CHASSIS

FT

Summary of Contents for InteriArt LT-26A60BU

Page 1: ...apan Limited No YA314 2005 10 WIDE LCD PANEL TELEVISION YA314 2005 10 LT 26A60BU LT 26A60SJ LT 26A60SU TABLE OF CONTENTS 1 PRECAUTION 1 3 2 SPECIFIC SERVICE INSTRUCTIONS 1 7 3 DISASSEMBLY 1 10 4 ADJUSTMENT 1 15 5 TROUBLESHOOTING 1 19 BASIC CHASSIS FT ...

Page 2: ... H 57 6 cm V 32 4 cm Display Pixels Horizontal 1366 dots Vertical 768 dots W XGA Audio Power Output 5 W 5 W Speaker 6 6 cm round type 2 Oblique corn Aerial terminal VHF UHF 75 Ω unbalanced coaxial EXT 1 EXT 2 Input Output 21 pin Euro connector SCART socket 2 EXT 3 Input S Video Video Audio 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 1 V p p Posit...

Page 3: ...omponents 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 isolation check on the exposed metal parts of the cabinet antenna terminals video audio input and output terminals Control knobs metal cabinet screw heads earphone jack control ...

Page 4: ...aracteristics are identified in the Parts List of Service Manual Electrical components having such features are identified by shading on the schematics and by on the Parts List in the Service Manual The use of a substitute replacement which does not have the same safety characteristics as the recommended replacement part shown in the Parts List of Service Manual may cause shock fire or other hazar...

Page 5: ...ping in order to protect against accidents and earthquakes 1 3 3 INSTALLATION REQUIREMENTS To ensure safety in an emergency such as an earthquake and to prevent accidents ensure that measures are taken to prevent the TV dropping or falling over 1 3 4 NOTES ON HANDLING 1 WHEN TAKING UNIT OUT OF A PACKING CASE When taking the unit out of a packing case do not grasp the upper part of the unit If you ...

Page 6: ...ring transportation and storage as the LCD panel is very vulnerable to lateral impacts and may break During transportation ensure that the unit is loaded along the traveling direction of the vehicle and avoid stacking them on one another For storage ensure that they are stacked in 2 layers or less even when placed upright 1 4 2 OPTICAL FILTER ON THE FRONT OF THE LCD PANEL 1 Avoid placing the unit ...

Page 7: ... SILVER Pin No Signal designation Matching value EXT 1 EXT 2 1 AUDIO R output 500mV rms Nominal Low impedance Used TV OUT Used LINE OUT 2 AUDIO R input 500mV rms Nominal High impedance Used R1 Used R2 3 AUDIO L output 500mV rms Nominal Low impedance Used TV OUT Used LINE OUT 4 AUDIO GND Used Used 5 GND B Used Used 6 AUDIO L input 500mV rms Nominal High impedance Used L1 Used L2 7 B input 700mV B W...

Page 8: ... the brightness twice as brighter as originally lighting For checking this pixel fault input 100 of each R G B colour and find out the cell that is not lighting FLICKER FAULT In the pixel fault a cell that should light originally or not light originally is flashing on and off For checking this pixel fault input ALL BLACK SCREEN signal or 100 of each RGB colour and find out the cell that is flashin...

Page 9: ... 26 P2 2 I key scan data 2 76 A14 O Program ROM address for CPU 27 P2 3 I Scaet1 ID H Detect 77 A12 O Program ROM address for CPU 28 NC1 Not used 78 A13 O Program ROM address for CPU 29 HS SSC I Horizontal sync 79 A7 O Program ROM address for CPU 30 VS I Vertical sync 80 FL_RST Test purpose 31 P3 0 O Data Read for Scaler IC 81 A8 O Program ROM address for CPU 32 P3 1 O Comunication for adjustment ...

Page 10: ...REMOVING THE MAIN PWB Remove the STAND Remove the REAR COVER Remove the TERMINAL BASE Remove the BACK BRACKET Remove the POWER PWB SHIELD 1 Remove the 7 screws L and 2 screws N then remove the MAIN PWB SHIELD 2 Remove the 6 screws M then remove the MAIN PWB 3 1 5 REMOVING THE KEY PWB Remove the STAND Remove the REAR COVER 1 Remove the 2 screws P then remove the KEY PWB 3 1 6 REMOVING THE LED PWB R...

Page 11: ...IN BASE INSULATOR TOP FRAME BOTTOM FRAME STAND STAND COVER CABLE COVER JACK COVER REAR COVER POWER PWB POWER CORD LCD PANEL UNIT KEY PWB KNOB BASE LED PWB FRONT PANEL TERMINAL BASE SPEAKER SPEAKER MAIN PWB B A W C D F F L M G H R S R N P V T U U T K S J E Q CONTROL KNOB ...

Page 12: ...setting items according to the given in page later Where these do not agree refer to the OPERATING INSTRUCTIONS and set the items as described 6 SERVICE MODE setting Verify what to set in the SERVICE MODE and set whatever is necessary Fig 1 Refer to the SERVICE ADJUSTMENT for setting 3 2 2 SERVICE MODE SETTING SERVICE MODE SCREEN Fig 1 NOTE As self check feature is not used in this TV 2 SELF_CHECK...

Page 13: ...tion PICTURE MODE BRIGHT COLOUR TEMP COOL FEATURES DIGITAL VNR AUTO LOW COLOUR SYSTEM TV Depends on PR CH EXT AUTO 4 3 AUTO ASPECT PANORAMIC Setting item Setting position STEREO I II Stereo sound BASS Centre TREBLE Centre BALANCE Centre 3D SOUND OFF Setting item Setting position SLEEP TIMER OFF CHILD LOCK ID NO 0000 All CH off APPEARANCE TYPE D BLUE BACK ON FAVOURITE SETTING Reset Setting item Set...

Page 14: ...he tweezers and remove the chip part Transistors diodes variable resistors etc 1 Apply extra solder to each lead 2 As shown in the figure push the part with tweezers and alternately melt the solder at each lead Shift and remove the chip part NOTE After removing the part remove remaining solder from the pattern 2 How to install Chip parts Resistors capacitors etc 1 Apply solder to the pattern as in...

Page 15: ...ITE BALANCE HIGH LIGHT adjustment 4 5 BASIC OPERATION OF SERVICE MODE 4 5 1 HOW TO ENTER THE SERVICE MODE 1 Press INFORMATION key and MUTING key on the remote control unit simultaneously to enter the SERVICE MODE SCREEN 2 In the SERVICE MENU press the 1 key to display ADJUSTMENT MODE SCREEN NOTE As self check feature is not used in this TV 2 SELF_CHECK cannot be selected screen display only Before...

Page 16: ...SETTING ITEM NO Setting item numbers are displayed For the setting item names to be displayed refer to INITIAL SETTING VALUES IN THE SERVICE MODE 7 SETTING VALUE DATA The SETTING VALUE is displayed 4 5 4 CHANGE AND MEMORY OF SETTING VALUE SELECTION OF SETTING ITEM FUNCTION key For scrolling up down the setting items CHANGE OF SETTING VALUE DATA FUNCTION key For scrolling up down the setting values...

Page 17: ...029 HD WM G DR 32 31 00 S030 HD WM B DR 32 31 00 S031 PC R OF 000 255 133 S032 PC G OF 000 255 121 S033 PC B OF 000 255 115 S034 PC R DR 32 31 15 S035 PC G DR 32 31 14 S036 PC B DR 32 31 10 S037 PC CL R DR 32 31 00 S038 PC CL G DR 32 31 00 S039 PC CL B DR 32 31 00 S040 PC WM R DR 32 31 00 S041 PC WM G DR 32 31 00 S042 PC WM B DR 32 31 00 S043 PC AUTO WB 000 001 000 Item No Item name Variable range...

Page 18: ...8 Item No Item name Variable range Setting value Item Measuring instrument Test point Adjustment part Description WHITE BALANCE HIGHLIGHT Remote control unit Signal generator 1 ADJUST S013 R DRIVE Red drive S015 G DRIVE Green drive S017 B DRIVE Blue drive 1 Receive a PAL 75 all white signal 2 Set PICTURE MODE to STANDARD 3 Set ZOOM to FULL 4 Set COLOUR TEMP to NORMAL 5 Select 1 ADJUST from the SER...

Page 19: ... No YA314 1 19 SECTION 5 TROUBLESHOOTING This service manual does not describe TROUBLESHOOTING ...

Page 20: ... No YA314 AV MULTIMEDIA COMPANY DISPLAY CATEGORY 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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