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(No.YA232)1-5

1.3

HANDLING LCD PANEL

1.3.1 PRECAUTIONS FOR TRANSPORTATION

When transporting the unit, pressure exerted on the internal LCD
panel due to improper handling (such as tossing and dropping)
may cause damages even when the unit is carefully packed. To
prevent accidents from occurring during transportation, pay
careful attention before delivery, such as through explaining the
handling instructions to transporters.
Ensure that the following requirements are met during
transportation, as the LCD panel of this unit is made of glass and
therefore fragile:

(1) USE A SPECIAL PACKING CASE FOR THE LCD PANEL

When transporting the LCD panel of the unit, use a special
packing case (packing materials). A special packing case
is used when a LCD panel is supplied as a service spare
part.

(2) ATTACH PROTECTION SHEET TO THE FRONT

Since the front (display part) of the panel is vulnerable,
attach the protection sheet to the front of the LCD panel
before transportation. Protection sheet is used when a LCD
panel is supplied as a service spare part.

(3) AVOID VIBRATIONS AND IMPACTS

The unit may be broken if it is toppled sideways even when
properly 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
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.

1.3.2 OPTICAL FILTER (ON THE FRONT OF THE LCD PANEL)

(1) Avoid placing the unit under direct sunlight over a

prolonged period of time. This may cause the optical filter
to deteriorate in quality and COLOUR.

(2) Clean the filter surface by wiping it softly and lightly with a

soft and lightly fuzz cloth (such as outing flannel).

(3) Do not use solvents such as benzene or thinner to wipe the

filter surface. This may cause the filter to deteriorate in
quality or the coating on the surface to come off. When
cleaning the filter, usually use the neutral detergent diluted
with water. When cleaning the dirty filter, use water-diluted
ethanol.

(4) Since the filter surface is fragile, do not scratch or hit it with

hard materials. Be careful enough not to touch the front
surface, especially when taking the unit out of the packing
case or during transportation.

1.3.3 PRECAUTIONS FOR REPLACEMENT OF EXTERIOR

PARTS

Take note of the following when replacing exterior parts (REAR
COVER, FRONT PANEL, etc.):

(1) Do not exert pressure on the front of the LCD panel (filter

surface). It may cause irregular COLOUR.

(2) Pay careful attention not to scratch or stain the front of the

LCD panel (filter surface) with hands.

(3) When replacing exterior parts, the front (LCD panel) should

be placed facing downward. Place a mat, etc. underneath
to avoid causing scratches to the front (filter surface). 

Summary of Contents for InteriArt LT-23C50BJ

Page 1: ... No YA232 2005 8 WIDE LCD PANEL TELEVISION YA232 2005 8 LT 30E45SU LT 30E45SJ LT 30E45SU Z LT 30E45SU N TABLE OF CONTENTS 1 PRECAUTION 1 3 2 SPECIFIC SERVICE INSTRUCTIONS 1 6 3 DISASSEMBLY 1 10 4 ADJUSTMENT 1 16 5 TROUBLESHOOTING 1 16 P MENU BACK PC TV VCR DVD TV ...

Page 2: ...768 dots WXGA Audio Power Output 8W 8W 10 THD Speaker 5 0cm round type 2 Aerial terminal VHF UHF F type connector 75Ω unbalanced coaxial EXT 1 EXT 2 Input Output 21 pin Euro connector SCART socket 2 EXT 3 Input Component Video 625p 525p 625i 525i Audio RCA pin jack 3 Y 1V p p Positive Negative sync provided 75 Ω Cb Cr 0 7V p p 75 Ω 500mV rms 4dBs high impedance RCA pin jack 2 EXT 4 Input S Video V...

Page 3: ...ts 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 shafts ...

Page 4: ...in an emergency such as an earthquake and to prevent accidents ensure that measures are taken to prevent the TV dropping or falling over Use the supplied screws to firmly attach the supplied hooks OPTION to the back of the TV and use commercially available cord to fix the TV to rigid components such as walls and columns 1 2 4 NOTES ON HANDLING 1 WHEN TAKING UNIT OUT OF A PACKING CASE When taking t...

Page 5: ...uring 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 3 2 OPTICAL FILTER ON THE FRONT OF THE LCD PANEL 1 Avoid placing the unit...

Page 6: ...ng 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 75Ω Used Used 8 FUNCTION SW SLOW SW Low...

Page 7: ...IGHT FAULT In this pixel fault a cell that should not light originally is lighting on and off For checking this pixel fault input ALL BLACK SCREEN and find out the cell that is lighting on and off DARK FAULT In this pixel fault a cell that should light originally is not lighting or lighting with the brightness twice as brighter as originally lighting For checking this pixel fault input 100 of each...

Page 8: ...reen 2 5 2 HOW TO EXIT THE SERVICE MODE Press the MENU key to exit the Service mode 2 5 3 CHANGE AND MEMORY OF SETTING VALUE SELECTION OF SETTING MENU ITEM FUNCTION key Select the SETTING MENU ITEM OK key Decision the SETTING MENU ITEM CHANGE OF SETTING VALUE DATA FUNCTION key MEMORY OF SETTING VALUE DATA The setting value will be stored automatically when release the REMOTE CONTROL UNIT keys 2 5 ...

Page 9: ...0K 7500K 9300K 5500K video format auto ntsc pal secam ntsc auto color space RGB YPbPr SMPTE240 YPbPr REC709 YCbCr REC601 RGB test pattern none solid color vert bars none color components all red green blue all solid field level 0 64 33 initial aps on off on deinterlacer black expansion on off These values are notrecorded for this reasonthey are adjust ed to aspecified value dcti 0 255 dlti 0 255 l...

Page 10: ...move the 8 screws F and 2 screws G then remove the MAIN PWB 3 1 4 REMOVING THE POWER PWB Fig 1 Remove the STAND Remove the REAR COVER 1 Remove the 4 screws H then remove the POWER PWB 3 1 5 REMOVING THE POWER UNIT Fig 1 Remove the STAND Remove the REAR COVER 1 Remove the 4 screws J then remove the POWER UNIT 3 1 6 REMOVING THE CONTROL BOTTON PWB Fig 1 Remove the STAND Remove the REAR COVER 1 Remov...

Page 11: ... 1 MAIN PWB M L G E W K D B C J H F T Q N P R A FAV PWB CONTROL BASE CONTROL KNOB REAR COVER STAND TERMINAL BASE NOISE FILTER PWB AMPLIFIER PWB LED PWB POWER UNIT RIGHT FRAME LEFT FRAME POWER PWB CONTROL BUTTON PWB FRONT ...

Page 12: ...NG THE LCD PANEL UNIT Fig 2 Remove the STAND Remove the REAR COVER 1 Remove the 4 screws D and the 12 screws E then remove the LCD PANEL UNIT with the MAIN BASE 2 Remove the 4 screws F then remove the MAIN BASE from the LCD PANEL UNIT NOTE Pay special attention not to break or damage on the LCD PANEL face or frame The LCD PANEL UNIT is fixed to the FRONT COVER at the back side by using double side...

Page 13: ... No YA232 1 13 Fig 2 B B A A F F E D D C C SPEAKER R SPEAKER BASE SUB SPEAKER R SUB SPEAKER L SPEAKER L SPEAKER BASE MAIN BASE FRONT PANEL LCD PANEL UNIT FRONT ...

Page 14: ...tion ZOOM AUTO Setting item Setting position brightness 61 Contrast 36 Sharpness 50 Color 43 tint 50 phase PC signal input only 50 Setting item Setting position image size TV EXT Auto PC Fill all pip size pip selected only 10 pip position pip selected only upper left posision h position PC signal input only 10 v position PC signal input only 21 Setting item Setting position volume 21 hp volume 19 ...

Page 15: ...the 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 i...

Page 16: ...1 16 No YA232 SECTION 4 ADJUSTMENT This service manual does not describe ADJUSTMENT SECTION 5 TROUBLESHOOTING This service manual does not describe TROUBLESHOOTING ...

Page 17: ... No YA232 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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