JVC LT-42WX70/APT User manual

SERVICE MANUAL
COPYRIGHT © 2009 Victor Company of Japan, Limited No.YA700<Rev.001>
2009/6
LCD MONITOR
YA700<Rev.001>20096SERVICE MANUAL
LT-42WX70/APT, LT-42WX70/AUPT,
LT-42WX70/BPT, LT-42WX70/GPT,
LT-42WX70/TPT, LT-42WX70EU/PP
COPYRIGHT © 2009 Victor Company of Japan, Limited
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
BASIC CHASSIS
MX7
MODEL NO.
RATING LABEL (REAR)
There may be multiple versions of this TV
model.
The TV version is identified by the letters
next to the model number on the TV's
Rating.(See illustration).
Use the service manual that matches the
version of the TV.
LT42WX70APT
LT42WX70UPT
LT42WX70BPT
LT42WX70TPT
LT42WX70GTP
LABEL indication
LT-42WX70/APT
LT-42WX70/AUPT
LT-42WX70/BPT
LT-42WX70/TPT
LT-42WX70/GTP
SERVICE MODEL NAME
LT-42WX70
MODEL NAME
[RM-C2400] [RM-C2420][RM-C2410]
LT-42WX70 series only [Except LT-42WX70EU]

1-2 (No.YA700<Rev.001>)
SPECIFICATION
Design & specifications are subject to change without notice.
Items
Contents
LT-42WX70EU/PP
LT-42WX70/AUPT
LT-42WX70/BPT
LT-42WX70/GPT
LT-42WX70/APT
LT-42WX70/TPT
Dimension (W ×H ×D) 99.0 cm
× 71.68 cm × 17.0 cm [With stand (At the high position)]
99.0 cm
× 68.93 cm × 17.0 cm [With stand (At the middle position)]
99.0 cm
× 66.18 cm × 17.0 cm [With stand (At the low position)]
99.0 cm
× 59.98 cm × 4.25 cm [Without stand]
Mass 12.0 kg (without the speaker unit and the stand)
17.8 kg (including the stand)
19.0 kg (including the speaker unit and the stand)
Power Input AC110V - AC240 V, 50 Hz / 60 Hz
Power Consumption 175 W
Power consumption (on standby) AC 230 V: 0.7 W, AC 100 V: 0.4 W
LCD panel 42 V-inch wide aspect (16 : 9)
Screen Size Diagonal: 107 cm (H: 93.0 cm ×V: 52.3 cm)
Display Pixels Horizontal: 1920 dots ×Vertical: 1080 dots
Audio Power Output 10 W + 10 W
Speaker 3.0 cm ×13.0 cm , Bass Reflex Box ×2
INPUT-1/2/3 HDMI Input HDMI connector ×3 (V.1.3, with Deep Color, with x.v.Colour™, HDMI™CEC Support)
*When you connect a DVI device to INPUT-2 or INPUT-3, only the video signal is played
back, and the sound signal is not.
INPUT-4 RGB input D-sub 3-row 15-pin ×1 (RGB is compatible with DDC2B.)
Video signal G, Y : 1V(p-p) / 75Ω(including sync)
B, R, Pb/Cb, Pr/Cr : 0.7V(p-p) / 75 Ω
Horizontal sync (HD) HD : 0.3 V(p-p) - 5 V(p-p) / 1 kΩ(positive / negative polarity), 31.469 kHz - 75.000 kHz
Vertical sync (VD) VD : 1 V(p-p) - 5 V(p-p) / 1 kΩ(positive / negative polarity), 60 Hz ± 5 Hz
AUDIO INPUT (INPUT-1/4) 3.5 mm stereo mini jack connector ×1, 500 mV(rms) / high impedance
EXT. SPEAKER OUT Output terminal (L/R), impedance 8 Ω
REMOTE D-sub 2-row 9-pin connector ×1 (RS-232C) (for external serial control)
Remote control unit RM-C2400
(AAA/R03 dry cell battery ×2)
RM-C2410
(AAA/R03 dry cell battery ×2)
RM-C2420
(AAA/R03 dry cell battery ×2)

(No.YA700<Rev.001>)1-3
SECTION 1
PRECAUTION
1.1 SAFETY PRECAUTIONS
(1) The design of this product contains special hardware,
many circuits and components specially for safety
purposes. For continued protection, no changes should be
made to the original design unless authorized in writing by
the manufacturer. Replacement parts must be identical to
those used in the original circuits. Service should be
performed by qualified personnel only.
(2) Alterations of the design or circuitry of the products should
not be made. Any design alterations or additions will void
the manufacturer's warranty and will further relieve the
manufacturer of responsibility for personal injury or
property damage resulting therefrom.
(3) Many electrical and mechanical parts in the products have
special safety-related characteristics. These
characteristics are often not evident from visual inspection
nor can the protection afforded by them necessarily be
obtained by using replacement components rated for
higher voltage, wattage, etc. Replacement parts which
have these special safety characteristics 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 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 hazards.
(4) Don't short between the LIVE side ground and
ISOLATED (NEUTRAL) side ground or EARTH side
ground when repairing.
Some model's power circuit is partly different in the GND.
The difference of the GND is shown by the LIVE : ( ) side
GND, the ISOLATED (NEUTRAL) : ( ) side GND and
EARTH : ( ) side GND.
Don't short between the LIVE side GND and ISOLATED
(NEUTRAL) side GND or EARTH side GND and never
measure the LIVE side GND and ISOLATED (NEUTRAL)
side GND or EARTH side GND at the same time with a
measuring apparatus (oscilloscope etc.). If above note will
not be kept, a fuse or any parts will be broken.
(5) When service is required, observe the original lead dress.
Extra precaution should be given to assure correct lead
dress in the high voltage circuit area. Where a short circuit
has occurred, those 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
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, etc.) to be sure the product is safe to operate
without danger of electrical shock.
a) Dielectric Strength Test
The isolation between the AC primary circuit and all metal
parts exposed to the user, particularly any exposed metal
part having a return path to the chassis should withstand a
voltage of 3000V AC (r.m.s.) for a period of one second. (.
. . . Withstand a voltage of 1100V AC (r.m.s.) to an
appliance rated up to 120V, and 3000V AC (r.m.s.) to an
appliance rated 200V or more, for a period of one second.)
This method of test requires a test equipment not generally
found in the service trade.
b) Leakage Current Check
Plug the AC line cord directly into the AC outlet (do not use
a line isolation transformer during this check.). Using a
"Leakage Current Tester", measure the leakage current
from each exposed metal part of the cabinet, particularly
any exposed metal part having a return path to the chassis,
to a known good earth ground (water pipe, etc.). Any
leakage current must not exceed 0.5mA AC (r.m.s.).
However, in tropical area, this must not exceed 0.2mA AC
(r.m.s.).
Alternate Check Method
Plug the AC line cord directly into the AC outlet (do not
use a line isolation transformer during this check.). Use
an AC voltmeter having 1000Ωper volt or more
sensitivity in the following manner. Connect a 1500Ω
10W resistor paralleled by a 0.15µF AC-type capacitor
between an exposed metal part and a known good earth
ground (water pipe, etc.). Measure the AC voltage
across the resistor with the AC voltmeter. Move the
resistor connection to each exposed metal part,
particularly any exposed metal part having a return path
to the chassis, and measure the AC voltage across the
resistor. Now, reverse the plug in the AC outlet and
repeat each measurement. Any voltage measured must
not exceed 0.75V AC (r.m.s.). This corresponds to
0.5mA AC (r.m.s.).
However, in tropical area, this must not exceed 0.3V AC
(r.m.s.). This corresponds to 0.2mA AC (r.m.s.).
AC VOLTMETER
(HAVING 1000 /V,
OR MORE SENSITIVITY)
PLACE THIS PROBE
ON EACH EXPOSED
METAL PART
1500 10W
0.15 F AC-TYPE
GOOD EARTH GROUND

1-4 (No.YA700<Rev.001>)
1.2 SAFETY PRECAUTIONS [FOR UK]
(1) The design of this product contains special hardware and many circuits and components specially for safety purposes. For
continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer.
Replacement parts must be identical to those used in the original circuits. Service should be performed by qualified personnel
only.
(2) Alterations of the design or circuitry of the product should not be made. Any design alterations or additions will void the
manufacturer's warranty and will further relieve the manufacturer of responsibility for personal injury or property damage
resulting therefrom.
(3) Many electrical and mechanical parts in the product have special safety-related characteristics. These characteristics are often
not evident from visual inspection nor can the protection afforded by them necessary be obtained by using replacement
components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics 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 hazards.
(4) The leads in the products are routed 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 designed and manufactured to meet international safety standards.
(2) It is the legal responsibility of the repairer to ensure that these safety standards are maintained.
(3) Repairs must be made in accordance with the relevant safety standards.
(4) It is essential that safety critical components are replaced by approved parts.
(5) If mains voltage selector is provided, check setting for local voltage.
1.3 INSTALLATION
1.3.1 HEAT DISSIPATION
If the heat dissipation vent behind this unit is blocked, cooling
efficiency may deteriorate and temperature inside the unit will
rise. The temperature sensor that protects the unit will be
activated when internal temperature exceeds the pre-determined
level and power will be turned off automatically.Therefore,
please make sure pay attention not to block the heat dissipation
vent as well as the ventilation outlet behind the unit and ensure
that there is room for ventilation around it.
1.3.2 INSTALLATION REQUIREMENTS
Ensure that the minimal distance is maintained, as specified
below, between the unit with and the surrounding walls, as well
as the floor etc.Install the unit on stable flooring or stands.Take
precautionary measures to prevent the unit from tipping in order
to protect against accidents and earthquakes.
1.3.2.1 WHEN FIXING TO FURNITURE
(1) Thread a belt (not supplied) through the hole on the back
of the stand.
(2) Fix the belt to the furniture using a screw.
Ventilation hole
*Diagram differs from actual appearance.
*Diagram differs from actual appearance.
50 mm
50
mm
150
mm 150 mm
200 mm 200
mm
*Diagram differs from actual appearance.
1. 2.

(No.YA700<Rev.001>)1-5
1.3.2.2 MOUNTING THE UNIT TO THE WALL
When selecting a wall mounting unit to mount the unit to the wall,
be sure to keep the distance shown in the figure for good heat
dissipation. This note is only about the heat dissipation to main-
tain normal operation of the unit, and not about the mounting
strength. Please inquire the manufacturer of the wall mounting
unit for the strength of the mounting unit.
CONDITION 1:
When mounting the unit to the wall, set the metal fittings so
that the distance A shown in Fig. 1 stays less than 90mm.
CONDITION 2:
When using the metal fittings with 90mm or more distance A,
set the distance between the metal fittings and the rear cover
more than 40mm as shown in Fig. 2.
1.3.3 NOTES ON HANDLING
When taking the unit out of a packing case, do not grasp the
upper part of the unit. If you take the unit out while grasping the
upper part, the LCD PANEL may be damaged because of a
pressure. Instead of grasping the upper part, put your hands on
the lower backside or sides of the unit.
1.4 HANDLING LCD PANEL
1.4.1 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.
Fig.1
Fig.2
AA
A: Less than 90mm
B
B: More than 40mm
METAL FITTINGS
WALL

1-6 (No.YA700<Rev.001>)
1.4.2 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.
1.4.3 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).
1.4.4 HOW TO CHECK THE OPERATING TIME
This model has a function to count and record the LCD panel
operating time. The operating time can be checked in the
following procedure.
• Maximum count time = 131070 hours
(1) Press [DISPLAY] key and [MUTING] or [INFORMATION]
key on the remote control unit simultaneously to enter the
SERVICE MODE SCREEN.
(2) When the Main Menu is displayed, press [2] key to enter
the self check mode.
(3) The operating time of the LCD panel is displayed in 6-digit
decimal number.
1.4.5 HOW TO RESET THE OPERATING TIME
(1) Press [DISPLAY] key and [MUTING] or [INFORMATION]
key on the remote control unit simultaneously to enter the
SERVICE MODE SCREEN.
(2) When the Main Menu is displayed, press [2] key to enter
the self check mode.
(3) When the self check screen(page-1) is displayed, press
[ASPECT(ZOOM)] key.
(4) "RESET : OK" is displayed under the operating time.
(5) Press the [OK] key to reset the operating time.
NOTE:
When the LCD PANEL UNIT is replaced, be sure to reset the
operating time following the above method.
The operating time is displayed
MAIN MENU SCREEN
SELF CHECK MODE SCREEN
Service Menu
Service Menu
1. Adjust
1. Adjust
2. Self Check
2. Self Check
3. I2C Bus Stop
3. I2C Bus Stop
POW PRO.
POW PRO.
0
INV PRO.
INV PRO.
0
I2C ANALOG
I2C ANALOG
0
0
I2C DIGITAL
I2C DIGITAL
0
0
HOURS
HOURS
131070 MAX
131070 MAX
LAST ERROR
LAST ERROR
0
0
0
RESET :OK
RESET :OK
Press [2] key
Switch the display/ non-display
with the [ASPECT/ZOOM] key.
MAX is displayed when the maximum
count time is exceeded
*When the power is turned off with the remote control unit or the power
button of the main unit, the count restarts from the turn off time.
*When the power is turned off by disconnecting the power cord from the
AC outlet, the recorded time count less than 1 hours is not counted.
*When the operating time exceeds the maximum count time, "MAX" is
displayed to the right of the counted time, and the following count is
discontinued.

(No.YA700<Rev.001>)1-7
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1 FEATURES
Picture Management
This function makes it easier to see the dark areas when a pic-
ture has many dark areas, and makes it easier to see the bright
areas when a picture has many bright areas.
Colour Management
This function ensures dull colours are compensated to pro-
duce natural hues.
Full HD
Full HD models deliver superbly detailed image reproduction
of more than 2 megapixels (1920 x 1080), which represents
double the resolution offered by WXGA panels.
DIGITAL VNR
This function cuts down the amount of noise in the original
picture.
MPEG Noise Reduction
This function effects the block noise removal and mosquito NR
simultaneously.
2.2 MAIN DIFFERENCE LIST
2.3 COMPLIANT SIGNAL FORMATS
Item
LT-42WX70EU/PP LT-42WX70A/PT LT-42WX70G/PT LT-42WX70B/PT LT-42WX70AU/PT LT-42WX70T/PT
REMOTE
CONTROL
UNIT
RM-C2400 RM-C2420 RM-C2410 RM-C2410 RM-C2410 RM-C2420
POWER
CORD
Round 2pin
UK 3pin
Italy type
Swiss type
(It depends on
the destination)
US 3 pin Round 3pin
UK 3pin
(It depends on the
destination)
TISI plug Austraria 3pin Taiwan 3pin
Classification Signal Name
Frequency Total region Effective region
Vertical horizontal Dot clock Pixel Line Pixel Line
Hz kHz MHz pixel/line line/frame pixel/line line/frame
Composite NTSC,
NTSC4.43,
PAL60, PAL-M
59.94 15.734 ---- 858 525 720 483
PAL50, SECAM,
PAL-N 50 15.625 ---- 864 625 720 576
Component 480/60i 59.94 15.734 ---- 858 525 720 483
576/50i 50 15.625 ---- 864 625 720 576
480/60p 59.94 31.469 ---- 858 525 720 483
576/50p 50 31.25 ---- 864 625 720 576
720/60p 59.94 44.955 ---- 1650 750 1280 720
720/50p 50 37.5 ---- 1980 750 1280 720
1080/60i 59.94 33.716 ---- 2200 1125 1920 1080
1080/50i 50 28.125 ---- 2640 1125 1920 1080
1080/60p 59.94 67.433 ---- 2200 1125 1920 1080
1080/50p 50 56.25 ---- 2640 1125 1920 1080
1080/30p 29.97 33.716 ---- 2200 1125 1920 1080
1080/24p 24 27 ---- 2750 1125 1920 1080

1-8 (No.YA700<Rev.001>)
PC (Analog) PC98/56 56.42 24.823 21.05 848 440 640 400
VGA/60 59.94 31.469 25.175 800 525 640 480
VGA/72 72.809 37.861 31.5 832 520 640 480
VGA/75 75 37.500 31.5 840 500 640 480
WVGA/60 60 31.020 33.75 1088 517 848 480
SVGA/60 60.317 37.879 40 1056 628 800 600
SVGA/72 72.188 48.077 50 1040 666 800 600
SVGA/75 75 46.875 49.5 1056 625 800 600
XGA/60 60.004 48.363 65 1344 806 1024 768
XGA/70 70.069 56.476 75 1328 806 1024 768
XGA/75 75.029 60.023 78.75 1312 800 1024 768
WXGA/60(1280) 59.87 47.776 79.5 1664 798 1280 768
WXGA/60(1360) 60.015 47.712 85.5 1792 795 1360 768
WXGA/60(1366) 60.004 48.363 86.715 1793 806 1366 768
SXGA/60 60.02 63.981 108 1688 1066 1280 1024
SXGA+/60 A 60.02 63.981 108 1688 1066 1400 1050
SXGA+/60 B 60 65.220 122.614 1880 1087 1400 1050
720p/60 60 45.000 74.25 1650 750 1280 720
1080p/60 60 67.500 148.5 2200 1125 1920 1080
HDMI 480/60i 59.94 15.734 13.5 858 525 720 483
576/50i 50 15.625 13.5 864 625 720 576
480/60p 59.94 31.469 27 858 525 720 483
576/50p 50 31.25 27 864 625 720 576
720/60p 59.94/60 44.955/45.0 74.176/
74.25 1650 750 1280 720
720/50p 50 37.5 74.25 1980 750 1280 720
1080/60i 59.94/60 33.716/
33.75
74.176/
74.25 2200 1125 1920 1080
1080/50i 50 28.125 74.25 2640 1125 1920 1080
1080/60p 59.94/60 67.433/
67.50
148.352/
148.5 2200 1125 1920 1080
1080/50p 50 56.25 148.5 2640 1125 1920 1080
1080/30p 29.97/30 33.716/
33.75
74.176/
74.25 2200 1125 1920 1080
1080/24p 23.98/24 26.973/27 74.176/
74.25 2750 1125 1920 1080
1080/25p 25 28.125 74.25 2640 1125 1920 1080
Classification Signal Name
Frequency Total region Effective region
Vertical horizontal Dot clock Pixel Line Pixel Line
Hz kHz MHz pixel/line line/frame pixel/line line/frame

(No.YA700<Rev.001>)1-9
2.4 TECHNICAL INFORMATION
2.4.1 LCD PANEL
This unit uses the flat type panel LCD (Liquid Crystal Display)
panel that occupies as little space as possible, instead of the
conventional CRT (Cathode Ray Tube), as a display unit.
Since the unit has the two polarizing filter that are at right angles
to each other, the unit adopts "normally black" mode, where light
does not pass through the polarizing filter and the screen is black
when no voltage is applied to the liquid crystals.
2.4.1.1 SPECIFICATIONS
The following table shows the specifications of this unit.
2.4.1.2 PIXEL FAULT
There are three pixel faults - bright fault, dark fault and flicker
fault - that are respectively defined as follows.
BRIGHT 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 R/G/B color
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 color and find out the cell that is flashing
on and off.
Item Specifications
Screen Size
Diagonal: 105 cm (H: 93.0 cm × V: 52.3 cm)
Aspect ratio 16 : 9
Drive device / system a-Si-TFT active matrix system
Number of Pixels Horizontally 1920 ×Vertically 1080
Pixel pitch (pixel size) H: 0.4845 mm, V: 0.4845 mm
Displayed colour
1073.7M colours
Brightness 450 cd/m2
Contrast ratio 4000 : 1
Response time (G to G) 6.5 ms
View angle Horizontally: 178°, Vertically: 178°
Surface polarizer Anti-Glare type Low reflective coat
Colour filter Vertical stripe
Backlight Cold cathode fluorescent lamp
Panel interface system
LVDS (Low Voltage Differential Signaling)

1-10 (No.YA700<Rev.001>)
2.4.2 MAIN CPU PIN FUNCTION [IC7301 : DIGITAL PWB]
Pin Pin name I/O Function
1 SDM_D13 I/O Data for SDRAM
2 SDM_D12 I/O Data for SDRAM
3 SDM_D11 I/O Data for SDRAM
4 SDM_D10 I/O Data for SDRAM
5 SDM_D9 I/O Data for SDRAM
6 SDM_D8 I/O Data for SDRAM
7 IVSS - GND
8 GEN_D0 I/O Data for flash memory
9 GEN_D1 I/O Data for flash memory
10 GEN_D2 I/O Data for flash memory
11 GEN_D3 I/O Data for flash memory
12 GEN_D4 I/O Data for flash memory
13 GEN_D5 I/O Data for flash memory
14 GEN_D6 I/O Data for flash memory
15 GEN_D7 I/O Data for flash memory
16 IVDD - +3.3V power supply
17 GEN_D15 I/O Data for flash memory
18 GEN_D14 I/O Data for flash memory
19 GEN_D13 I/O Data for flash memory
20 GEN_D12 I/O Data for flash memory
21 MVSS - GND
22 MVDD - +1.5V power supply
23 GEN_D11 I/O Data for flash memory
24 GEN_D10 I/O Data for flash memory
25 GEN_D9 I/O Data for flash memory
26 GEN_D8 I/O Data for flash memory
27 SDM_DQM0 I Byte enable for SDRAM
28 SDM_DQM1 I Byte enable for SDRAM
29 SDM_CLK I Clock feedback input for SDRAM
30 IVDD - +3.3V power supply
31 SDM_CLK O Clock output for SDRAM
32 IVSS - GND
33 SDM_CKE O Clock enable for SDRAM
34 SDM_WE O Write enable for SDRAM
35 SDM_CAS O CAS for SDRAM
36 SDM_RAS O RAS for SDRAM
37 SDM_CS O Chip enable for SDRAM
38 SDM_BS0 O Bank select for SDRAM
39 SDM_BS1 O Bank select for SDRAM
40 SDM_A10 O Address for SDRAM
41 SDM_A11 O Address for SDRAM
42 SDM_A9 O Address for SDRAM
43 SDM_A8 O Address for SDRAM
44 SDM_A7 O Address for SDRAM
45 SDM_A6 O Address for SDRAM
46 SDM_A5 O Address for SDRAM
47 SDM_A4 O Address for SDRAM
48 IVSS - GND
49 IVDD - +3.3V power supply
50 SDM_A3 O Address for SDRAM
51 SDM_A2 O Address for SDRAM
52 SDM_A1 O Address for SDRAM
53 SDM_A0 O Address for SDRAM
54 VSS - GND
55 VDD - +1.5V power supply
56
TCCS_CEDIA_OUT O Serial data transmission for CEDIA/TCCS
57
TCCS_CEDIA_IN I Serial data receive for CEDIA/TCCS
58 SYSCLKA O Not used
59 SBI1 I Not used
60 SBO1 O Not used
61 AMP_MUTE O Speaker output muting [Muting = L]
62 SBI0 I Not used
63 SBO0 O Not used
64 GEN_A16 O Address for flash memory
65 GEN_A15 O Address for flash memory
66 GEN_A14 O Address for flash memory
67 GEN_A13 O Address for flash memory
68 GEN_A12 O Address for flash memory
69 GEN_A11 O Address for flash memory
70 GEN_A10 O Address for flash memory
71 GEN_A9 O Address for flash memory
72 GEN_A8 O Address for flash memory
73 IVDD - +3.3V power supply
74 IVSS - GND
75 GEN_A19 O Address for flash memory
76 GEN_A20 O Address for flash memory
77 GEN_WE O Write enable for flash memory
78 LVDS_RST O Reset for LVDS drive (IC5121 IC5141) [Reset = L]
79 GEN_A18 O Address for flash memory
80 GEN_A17 O Address for flash memory
81 RTCCNT I Oscillation control for RTC [L fixed]
82 GEN_A7 O Address for flash memory
83 GEN_A6 O Address for flash memory
84 GEN_A5 O Address for flash memory
85 IVSS - GND
86 LVDS_SEL O LVDS select for LCD panel [On = H]
87 BL_DET I Detection for LCD backlight [Error = H]
88 IVDD - +3.3V power supply
89 GEN_A4 O Address for flash memory
90 GEN_A3 O Address for flash memory
91 GEN_A2 O Address for flash memory
92 GEN_A1 O Address for flash memory
93 GEN_OE O Read enable for flash memory
94 FL_CS O Chip select for flash memory
95 GEN_A0 O Address for flash memory
96 VSS - GND
97 NRST I CPU reset [Reset = L]
98 VDD - +1.5V power supply
99 PSCNT O Not used
100 SDA2 I/O I2C bus (data) for audio amp (IC6001) etc.
101 SCL2 O I2C bus (clock) for audio amp (IC6001) etc.
102 SDA1 I/O I2C bus (data) for CAPSENS control (IC7701)
103 SCL1 O I2C bus (clock) for CAPSENS control (IC7701)
104 NTEST I Not used
105 OSD_HD I Horizontal sync for OSD
106 IVSS - GND
107 OSD_XI I Clock for OSD
108 IVDD - +3.3V power supply
109 OSD_VD I Vertical sync for OSD
110 OSD_YM O OSD digital output [YM]
111 OSD_YS O OSD digital output [YS]
112 OSD_R4 O OSD digital output R[4]
113 OSD_R3 O OSD digital output R[3]
114 OSD_R2 O OSD digital output R[2]
Pin Pin name I/O Function

(No.YA700<Rev.001>)1-11
115 OSD_R1 O OSD digital output R[1]
116 WRITE_SW I Write/load detection for CEDIA/TCCS [Loader
mode = L]
117 OSD_G4 O OSD digital output G[4]
118 OSD_G3 O OSD digital output G[3]
119 OSD_G2 O OSD digital output G[2]
120 OSD_G1 O OSD digital output G[1]
121 G01 I Not used
122
GEN_SYSCLKB O Clock for local bus
123 OSD_B4 O OSD digital output B[4]
124 OSD_B3 O OSD digital output B[3]
125 OSD_B2 O OSD digital output B[2]
126 OSD_B1 O OSD digital output B[1]
127 IVSS - GND
128 BSW_CTL O Not used
129 IVDD - +3.3V power supply
130 DPMS_HD I Horizontal sync for PC input
131 DPMS_VD I Vertical sync for PC input
132 SDA0A I/O I2C bus (data) for EEPROM (IC7304)
133 SCL0A O I2C bus (clock) for EEPROM (IC7304)
134 VSS - GND
135 RTCXI I Not used
136 RTCXO O Not used
137 VDD - +1.5V power supply
138 RMIN I Remote control
139 ROMCNT I Data bus width select [L fixed]
140 TEST I Not used
141 AVSS1 - GND
142 CVBS0 I Not used
143 AVDD1 - +3.3V power supply
144 VREFL0 I Not used
145 VREFH0 I Not used
146 VCMO0 I Not used
147 IREF0 I Not used
148 VCMO1 I Not used
149 VREFH1 I Not used
150 VREFL1 I Not used
151 CVBS1 I Not used
152 AVSS2 - GND
153 AVDD2 - +3.3V power supply
154 PVDD - +3.3V power supply
155 CLL I Clamp control [H fixed]
156 CLH I Clamp control [L fixed]
157 PVSS - GND
158 IVSS - GND
159 ADIN0 I Not used
160 ADIN1 I Not used
161 LB_PRO I Low-B protect detection [Error protection = H]
162 EE I E. E. sensor [Bright = H]
163 LCD_FRAME O Not used
164 DIN_PHOT I For HDMI
165 CEC_IN I/O Not used
166 P243 O Not used
167 IVSS - GND
168 OSCXO O Oscillation for system clock (10MHz)
169 OSCXI I Oscillation for system clock (10MHz)
170 IVDD - +3.3V power supply
171 TRCD3 O Not used
Pin Pin name I/O Function
172 TRCD2 O Not used
173 TRCD1 O Not used
174 TRCD0 O Not used
175 TRCST O Not used
176 TRCCLK O Not used
177 EXTRG1 I/O For external programming
178 EXTRG0 I/O For external programming
179 SDATA I/O For external programming
180 SCLOCK I For external programming
181 VSS - GND
182 VDD - +1.5V power supply
183
GEN_MYU_CS I/O Chip select for sub CPU
184 EDID_WP O For HDMI
185 FTS_KEY1 I Interrupt detection for CAPSENS control (IC7701)
[On = L/H oscillation]
186 AMP_RST O Reset for analog devices (IC6001 IC6401) [Reset = L]
187 DAV_RST O Not used
188 P105 O Not used
189 MYU_INTPZ I Not used
190 DIN_INT I Interrupt detection for HDMI
191 IVDD - +3.3V power supply
192 IVSS - GND
193 MAIN_POW O Power on/off control for main power supply [On = L]
194 LB_POW O Not used
195 LCD_POW O Power on/off control for LCD panel [On = L]
196 PFC_POW O Power on/off control for PFC [On = L]
197 LED_POW O Lighting for POWER LED [On = H]
198 P112 O Not used
199 FTS_XRES O Reset for CAPSENS control (IC7701) [Reset = H]
200 BL_ON O Lighting for LCD backlight [On = H]
201 IVDD - +3.3V power supply
202 IVSS - GND
203 MVSS - GND
204 MVDD - +1.5V power supply
205 SDM_D0 I/O Data for SDRAM
206 SDM_D1 I/O Data for SDRAM
207 SDM_D2 I/O Data for SDRAM
208 SDM_D3 I/O Data for SDRAM
209 SDM_D4 I/O Data for SDRAM
210 SDM_D5 I/O Data for SDRAM
211 SDM_D6 I/O Data for SDRAM
212 SDM_D7 I/O Data for SDRAM
213 IVSS - GND
214 IVDD - +3.3V power supply
215 SDM_D15 I/O Data for SDRAM
216 SDM_D14 I/O Data for SDRAM
Pin Pin name I/O Function

1-12 (No.YA700<Rev.001>)
SECTION 3
DISASSEMBLY
3.1 CAUTION AT DISASSEMBLY
• Make sure that the power cord is disconnected from the outlet.
• Pay special attention not to break or damage the parts.
• Make sure that there is no bent or stain on the connectors before inserting, and firmly insert the connectors.
• Be sure to reattach the wire clamps removed during the procedure to the original positions. (Attaching the wire clamps in wrong
positions may affect the performance.)
REFERENCE:
When removing each board, remove the connector if necessary. The operation is easier if you write down the connection points
(connector numbers) of the connector. For connection of each board, refer to the "WIRING DIAGRAM" of the Standard Circuit
Diagram.
3.2 DISASSEMBLY PROCEDURE [SPEAKER ASSY]
3.2.1 REMOVING THE SPEAKER UNIT (Fig.3-1)
(1) Remove the REAR SHEET.
(2) Remove the 4 screw [A].
(3) Remove the SPEAKER UNIT(L/R).
3.2.2 REMOVING THE JOINT BRACKET (Fig.3-1)
(1) Remove the 2 screws [B].
(2) Remove the JOINT BRACKET.
Fig.3-1
3.3 DISASSEMBLY PROCEDURE [MAIN UNIT]
3.3.1 REMOVING THE REAR COVER (Fig.3-2)
(1) Remove the TERMINAL COVER(L/R).
(2) Carefully peel off the TOP SHEET.
(3) Remove the 4 screws [A], 2 screws [B], 1 screw [C] and 8
screws [D].
(4) Loosen the 2 screws [E] to the same length as the screws
[A]. (So that the lengths a and b become the same.)
(5) Push in the loose screws [E], then remove the REAR
COVERS (L/R) by pulling them up to the direction of the
arrows.
NOTE:
• Store the peeled off TOP SHEET avoiding dust adherence.
• Do not use any substitute double-faced tape other than the
original one used with the TOP SHEET.
3.3.2 REMOVING THE INVERTER-1 (Fig.3-2)
• Remove the REAR COVER.
(1) Remove the 5 screw [F].
(2) Remove the INVERTER-1.
3.3.3 REMOVING THE INVERTER-2 (Fig.3-2)
• Remove the REAR COVER.
(1) Remove the 12 screw [G].
(2) Remove the INVERTER-2(L/R).
3.3.4 REMOVING THE AC INLET PWB (Fig.3-2)
• Remove the REAR COVER.
(1) Remove the 2 screws [H].
(2) Remove the AC INLET PWB.
AA
AA
BB
SPEAKER UNIT
REAR SHEET
CONN ROD
JOINT BRACKET
SPEAKER UNIT

(No.YA700<Rev.001>)1-13
3.3.5 REMOVING THE MAIN POWER PWB (Fig.3-2)
• Remove the REAR COVER.
(1) Remove the 4 screws [I].
(2) Remove the MAIN POWER PWB.
3.3.6 REMOVING THE PFC POWER PWB (Fig.3-2)
• Remove the REAR COVER.
(1) Remove the 6 screws [J].
(2) Remove the PFC POWER PWB.
3.3.7 REMOVING THE SIDE PWB (Fig.3-2)
• Remove the REAR COVER.
(1) Remove the 6 screws [K].
(2) Remove the SIDE PWB.
3.3.8 REMOVING THE CAPSENS PWB (Fig.3-2)
• Remove the REAR COVER.
(1) Carefully peel off the double-faced tape, then remove the
CAPSENS PWB.
3.3.9 REMOVING THE STAND (Fig.3-2)
(1) Remove the 1 screw [L].
(2) Remove the STAND by sliding it to the direction of the
arrow.
3.3.10 REMOVING THE DIGITAL PWB (Fig.3-2)
• Remove the REAR COVER.
• Remove the STAND.
(1) Remove the 12 screws [M] and 1 screw [N].
(2) Remove the CENTER FRAME.
(3) Remove the 1 screw [P] and 7 screws [Q].
(4) Remove the HEAT SINK.
(5) Remove the DIGITAL PWB.
3.3.11 REMOVING THE T-CON PWB (Fig.3-2)
• Remove the REAR COVER.
• Remove the STAND.
• Remove the CENTER FRAME.
(1) Remove the 4 screws [R].
(2) Remove the T-CON SHIELD.
(3) Remove the T-CON PWB.
3.3.12 REMOVING THE SIGNAL PWB (Fig.3-2)
• Remove the REAR COVER.
• Remove the STAND.
• Remove the CENTER FRAME.
(1) Remove the 5 screws [S].
(2) Remove the SIGNAL PWB.
3.3.13 REMOVING THE LED PWB (Fig.3-2)
• Remove the REAR COVER.
• Remove the STAND.
• Remove the CENTER FRAME.
(1) Remove the 1 screw [T].
(2) Remove the LED PWB.
3.3.14 REMOVING THE TERMINAL BASE (Fig.3-2)
• Remove the REAR COVER.
• Remove the STAND.
• Remove the CENTER FRAME.
(1) Remove the 4 screws [U].
(2) Remove the TERMINAL BASE.
3.3.15 REMOVING THE FRONT PANEL (Fig.3-2)
• Remove the REAR COVER.
• Remove the STAND.
• Remove the CENTER FRAME.
(1) Remove the 2 screws [V].
(2) Remove the SPEAKER BRACKET.
(3) Remove the 4 screws [W] and 5 screws [X].
(4) Remove the LCD PANEL UNIT.
(5) Remove the 8 screws [Y] and 2 screws [E].
(6) Remove the SLIDE BRACKET(L/R) from the FRONT
PANEL.
NOTE:
When the FRONT PANEL is removed, 6 COFs (Chip on Film)
on the LCD MODULE are exposed (Fig.3-2).
If a COF is bent and the wiring/chip is broken, the LCD MOD-
ULE cannot be used.
When removing/attaching the FRONT PANEL, following cau-
tion is required to avoid damaging the COFs:
• Do not grab the COFs with hands.
• Prevent the COFs from being bumped, scratched, or
pinched.
More than one person is required to remove/attach the FRONT
PANEL with caution.
COF(Chip on Film)

1-14 (No.YA700<Rev.001>)
Fig.3-2
T-CON
SHIELD
YY
YY
DD
AA
AA LL
MM
BB
CC
BB
II
PP
GG
FF
VV
RR
SS
UU
HH
VV
WW
WW
GG
MM
MM
NN
JJ
QQ
EE
EE
TT
KK
PFC POWER
PWB
STAND ASSY
CENTER FRAME
REAR COVER(R)
REAR COVER(L)
TERMINAL
COVER(R)
TERMINAL
COVER(L)
MAIN POWER PWB
CAPSENS PWB
SLIDE BRACKET(L)
SLIDE
BRACKET(R)
AC INLET
PWB
LED PWB
FRONT PANEL
SIDE PWB
EARTH
STRAP
SIGNAL PWB
HEAT SINK
T-CON PWB
DIGITAL PWB
NARROW CONNECTOR
WIDE CONNECTOR
COF(Chip on Film)
COF(Chip on Film)
TOP SHEET
INSULATOR
INSULATOR
INSULATOR
TERMINAL BASE
LCD
INVERTER-2
LCD INVERTER-1
LCD PANEL UNIT
SPEAKER BRACKET
SPEAKER
BRACKET
LCD
INVERTER-2
DD
XX
XX
DD
XX
DD
XX
XX
DD
EE
AA
b
a

(No.YA700<Rev.001>)1-15
3.4 MEMORY IC REPLACEMENT
• This model uses the memory IC.
• This memory IC stores data for proper operation of the video and drive circuits.
• When replacing, be sure to use an IC containing this (initial value) data.
3.4.1 MEMORY IC REPLACEMENT PROCEDURE
1. Power off
Switch off the power and disconnect the power plug from the
AC outlet.
2. Replace the memory IC
Be sure to use the memory IC written with the initial setting
values.
3. Power on
Connect the power plug to the AC outlet and switch on the
power.
4. User setting
Check the user 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.
5. SERVICE MODE setting
Verify what to set in the SERVICE MODE, and set whatever is
necessary (Fig.3-3). Refer to the SERVICE ADJUSTMENT for
setting.
3.4.2 SERVICE MODE SETTING
SERVICE MODE SCREEN
Fig.3-3
SETTING ITEM
Setting items Setting Setting items
White balance setting Adjust S001 - S003
Other setting Fix S004 - S013
Press [1] key
MAIN MENU SCREEN
ADJUSTMENT MODE SCREEN
Service Menu
Service Menu
1. Adjust
1. Adjust
2. Self Check
2. Self Check
3. I2C Bus Stop
3. I2C Bus Stop
S001 R DRIVE 137
S001 R DRIVE 137
08 PAL50
08 PAL50
Full Warm2 0
Full Warm2 0

1-16 (No.YA700<Rev.001>)
3.4.3 SETTINGS OF FACTORY SHIPMENT
3.4.3.1 PICTURE MENU SETTING
Setting Item
Setting Data
Dynamic
(Memory2)
Standard
(Memory1)
Theater
(Memory3)
Monitor
(Memory4)
Photo Pro
(Memory5)
Game
(Memory6)
Tint 000000
TintSetting BYGain 220000
BY/RYAngle 024000
Color 500000
Contrast 400000
Cotrast Setting Black Stretch High Medium Low Off Off Off
Dynamic DC Offset On On On Off Off Off
Auto Contrast On Off Off Off Off Off
Brightness 000000
Sharpness 10 0 0 -30 0 -15
Enhancer Mode3 Mode3 Mode4 Mode5 Mode5 Mode5
Enhancer Setting Detail 0 -5 0 0 -15 0
H.Sharp 15 10 5 0 -5 0
V.Sharp 15100000
Backlight 30 10 0 0 10 10
Backlight Setting Smart Picture Off On On Off Off On
Dynamic Backlight High Medium Low Off Off Off
Color System Auto Auto Auto Auto Auto Auto
Color Matrix Auto Auto Auto Auto Auto Auto
Color Space PC Monitor Mode=On sRGB sRGB sRGB sRGB sRGB sRGB
PC Monitor Mode=Off Auto Auto Normal Normal sRGB Auto
Color Temperature Cool2 Normal Warm2 Warm2 Warm2 Cool2
WhiteBalanceSettingRDrive 000000
GDrive 000000
BDrive 000000
RCutoff 000000
GCutoff 000000
BCutoff 000000
Color Management Mode1 Mode2 Mode3 Off Off Mode2
ColorMngmt.SettingRedTint 000000
RedColor 000000
YellowTint 000000
YellowColor 000000
GreenTint 000000
GreenColor 000000
CyanTint 000000
CyanColor 000000
SkinTint 000000
SkinColor 000000
Color:BrightArea 000000
Color:DarkArea 000000
Gamma Mode1 Mode2 Mode4 Mode4 Mode4 Mode3

(No.YA700<Rev.001>)1-17
3.4.3.2 SOUND MENU SETTING
3.4.3.3 SETUP MENU SETTING
3.4.3.4 HDMI MENU SETTING
Dynamic Gamma High Medium Low Off Off Medium
Noise Reduction Digital VNR Auto Auto Auto Off Auto Auto
Mpeg NR Low Low Low Off Off Low
3DY/C On On On Off On On
Natural Cinema Auto Auto Auto Off Off Off
Picture Delay Time Normal Normal Normal Normal Normal Middle
PC Monitor Mode Off Off Off Off Off Off
Smart Sensor Off Off Off Off Off Off
Other Real Bit Driver On On On On On On
Clear Motion Drive On On On On Off On
Setting Item
Setting Data
Dynamic
(Memory2)
Standard
(Memory1)
Theater
(Memory3)
Monitor
(Memory4)
Photo Pro
(Memory5)
Game
(Memory6)
Setting Item Setting Data
Bass +2
Treble 0
Balance 0
Auto Volume Control Off
Lip Sync 0
PEQ On
Turn On Volume Current
Volume Limit 50
Setting Item Setting Data
Menu Language It depends on the
destination
Front Panel Lock Off
Auto Shut Off On
Aspect / Zoom -
Position Adjustment Center
Power Indicator On
Information / Display On
Input Label -
4:3 Aspect Setting Regular
1080 Auto Setting Full
Input-4Setting PC
PC Setting Sampling Mode STD
WVGA Select 1280 x 768
SXGA/SXGA+ SXGA
H Size 0
V Size 0
Dot Clock 0
Clock Phase 0
PC Position Adjust -
Auto Position Adjustment -
Setting Item Setting Data
Contro with HDMI On
One Touch Play On
Power Off Link On
AMP Control Off
Input-1 Audio AUTO

1-18 (No.YA700<Rev.001>)
3.5 REPLACEMENT OF CHIP COMPONENT
3.5.1 CAUTIONS
(1) Avoid heating for more than 3 seconds.
(2) Do not rub the electrodes and the resist parts of the pattern.
(3) When removing a chip part, melt the solder adequately.
(4) Do not reuse a chip part after removing it.
3.5.2 SOLDERING IRON
(1) Use a high insulation soldering iron with a thin pointed end of it.
(2) A 30w soldering iron is recommended for easily removing parts.
3.5.3 REPLACEMENT STEPS
1. How to remove Chip parts
[Resistors, capacitors, etc.]
(1) As shown in the figure, push the part with tweezers and
alternately melt the solder at each end.
(2) Shift with 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 indicated in the figure.
(2) Grasp the chip part with tweezers and place it on the
solder. Then heat and melt the solder at both ends of the
chip part.
[Transistors, diodes, variable resistors, etc.]
(1) Apply solder to the pattern as indicated in the figure.
(2) Grasp the chip part with tweezers and place it on the
solder.
(3) First solder lead Aas indicated in the figure.
(4) Then solder leads Band C.
SOLDER SOLDER
A
B
C
A
B
C

(No.YA700<Rev.001>)1-19
SECTION 4
ADJUSTMENT
4.1 ADJUSTMENT PREPARATION
(1) There are 2 ways of adjusting this TV : One is with the
REMOTE CONTROL UNIT and the other is the
conventional method using adjustment parts and
components.
(2) The adjustment using the REMOTE CONTROL UNIT is
made on the basis of the initial setting values. The
setting values which adjust the screen to the optimum
condition can be different from the initial setting
values.
(3) Make sure that connection is correctly made AC to AC
power source.
(4) Turn on the power of the TV and measuring instruments for
warming up for at least 30 minutes before starting
adjustments.
(5) If the receive or input signal is not specified, use the most
appropriate signal for adjustment.
(6) Never touch the parts (such as variable resistors,
transformers and condensers) not shown in the adjustment
items of this service adjustment.
4.2 PRESET SETTING BEFORE ADJUSTMENTS
Unless otherwise specified in the adjustment items, preset the
following functions with the REMOTE CONTROL UNIT.
4.3 MEASURING INSTRUMENT AND FIXTURES
• Signal generator (Pattern generator)
• Remote control unit
4.4 ADJUSTMENT ITEMS
VIDEO CIRCUIT
• WHITE BALANCE (HIGH LIGHT) adjustment
4.5 BASIC OPERATION OF SERVICE MODE
4.5.1 HOW TO ENTER THE SERVICE MODE
(1) Press [INFORMATION(DISPLAY)] key and [MUTING]
key on the remote control unit simultaneously to enter the
SERVICE MODE.
4.5.2 HOW TO EXIT THE SERVICE MODE
Press the [MENU] key to exit the Service mode.
4.5.3 SERVICE MODE SELECT KEY LOCATION
Setting item Settings position
Picture Mode Standard
Smart Picture Off
Dynamic Backlight Off
Colour Temp. Normal
Zoom Full
Service Menu
Service Menu
1. Adjust
1. Adjust
2. Self Check
2. Self Check
3. I2C Bus Stop
3. I2C Bus Stop
SERVICE MODE
[LT-42WX70EU/PP] [LT-42WX70/AUPT]
[LT-42WX70/BPT]
[LT-42WX70/GPT]
[LT-42WX70/APT]
[LT-42WX70/TPT]
[FUNCTION /] key
[Function/] key
[MUTING] key +
[INFORMATION] key
Enter The Factry Mode.
Scrolling up / down the
setting value.
Select the setting item.
[FUNCTION /] key
[Function/] key
[MUTING] key +
[INFORMATION
(DISPLAY)] key
Enter The Factry Mode.
Scrolling up / down the
setting value.
Select the setting item.
[FUNCTION /] key
[Function/] key
[MUTING] key +
[DISPLAY] key
Enter The Factry Mode.
Scrolling up / down the
setting value.
Select the setting item.

1-20 (No.YA700<Rev.001>)
4.5.4 ADJUSTMENT MODE
This mode is used to adjust the VIDEO CIRCUIT.
4.5.4.1 HOW TO ENTER THE ADJUSTMENT MODE
When the SERVICE MENU SCREEN of SERVICE MODE is
displayed, press [1] key to enter the ADJUSTMENT MODE.
4.5.5 DESCRIPTION OF STATUS DISPLAY
(1) SIGNAL SYSTEM
The currently input signal is displayed.
(2) SCREEN MODE
The currently selected ZOOM/ASPECT is displayed.
(3) WHITE BALANCE
The currently selected WHITE BALANCE is displayed.
(4) HDMI DEEP COLOR (BIT)
The HDMI input DEEP COLOR is displayed.
(5) SETTING ITEM NAME
The setting item name is displayed. The setting item numbers
to be displayed are listed below.
(6) SETTING ITEM NO.
The setting item number is displayed. For the setting item
names to be displayed, refer to "Initial setting value of
adjustment mode".
(7) SETTING VALUE (DATA)
The setting value is displayed.
PAL50 : PAL50Hz
PAL60 : PAL60Hz
SECAM : SECAM
NTSC3 : NTSC3.58
NTSC4 : NTSC4.43
PALM : PAL M
PALN : PAL N
A480i : Analog 480i
A480p : Analog 480p
A576i : Analog 576i
A576p : Analog 576p
A720p50 : Analog 720p 50Hz
A720p60 : Analog 720p 60Hz
A1080i50 : Analog 1080i 50Hz
A1080i60 : Analog 1080i 60Hz
A1080p50 : Analog 1080p 50Hz
A1080p60 : Analog 1080p 60Hz
A1080p24 : Analog 1080p 24Hz
A1080p30 : Analog 1080p 30Hz
H480i : HDMI 480i
H480p : HDMI 480p
H576i : HDMI 576i
H576p : HDMI 576p
H720p50 : HDMI 720p 50Hz
H720p60 : HDMI 720p 60Hz
H1080i50 : HDMI 1080i 50Hz
H1080i60 : HDMI 1080i 60Hz
H1080p50 : HDMI 1080p 50Hz
H1080p60 : HDMI 1080p 60Hz
H1080p24 : HDMI 1080p 24Hz
H1080p25 : HDMI 1080p 25Hz
H1080p30 : HDMI 1080p 30Hz
HVGA : HDMI VGA
D480i : Digital 480i
D480p : Digital 480p
D576i : Digital 576i
D576p : Digital 576p
D720p50 : Digital 720p 50Hz
D1080i50 : Digital 1080i 50Hz
D1080i60 : Digital 1080i 60Hz
D1080p50 : Digital 1080p 50Hz
DVGA : Digital VGA
DWVGA852*480 : Digital WVGA852*480
DSVGA800*600 : Digital SVGA800*600
DXGA1024*768 : Digital XGA1024*768
DWXGA1280*768 : Digital WXGA1280*768
DWXGA1360*768 : Digital WXGA1360*768
S001 R DRIVE 137
S001 R DRIVE 137
08 PAL50
08 PAL50
Full Warm2 0
Full Warm2 0
ADJUSTMENT MODE
SIGNAL SYSTEM
ZOOM MODE
SETTING VALUE (DATA)
SETTING ITEM No.
SETTING ITEM
COLOUR TEMP.(WHITE BALANCE)
HDMI DEEP COLOR (BIT)
DWXGA1366*768 : Digital WXGA1366*768
DSXGA1280*1024 : Digital SXGA1280*1024
DSXGA+1400*1050A : Digital SXGA+1400*1050A
DSXGA+1400*1050B : Digital SXGA+1400*1050B
D720p60 : Digital 720p 60Hz
D1080p60 : Digital 1080p 60Hz
PC98 640*400 56p : PC98 640*400 56Hz
PCVGA : PC VGA
PCVGA640*480 72p : PC VGA 640*480 72Hz
PCVGA640*480 75p : PC VGA 640*480 75Hz
PCWVGA852*480 : PC WVGA852*480
PCSVGA800*600 : PC SVGA800*600
PCSVGA800*600 72p : PC SVGA800*600 72Hz
PCSVGA800*600 75p : PC SVGA800*600 75Hz
PCXGA1024*768 : PC XGA1024*768
PCXGA1024*768 70p : PC XGA1024*768 70p
PCXGA1024*768 75p : PC XGA1024*768 75p
PCWXGA1280*768 : PC WXGA1280*768
PCWXGA1360*768 : PC WXGA1360*768
PCWXGA1366*768 : PC WXGA1366*768
PCSXGA1280*1024 : PC SXGA1280*1024
PCSXGA+1400*1050A : PC SXGA+1400*1050A
PCSXGA+1400*1050B : PC SXGA+1400*1050B
PC720p60 : PC 720p 60Hz
PC1080p60 : PC 1080p 60Hz
HDMI NG : -
YPbPr NG : -
PC NG : -
Full : Full
Pano : Panorama, Panorama zoom
16 : 9 : 16:9 zoom
16 : 9S : 16:9 zoom subtitle
Slim : Regular, Slim
14 : 9 : 14:9 zoom
FullN : Full Native
Just : Just
1 : 1 : 1 : 1
COOL1 : COOL1
COOL2 : COOL2
NORMAL : NORMAL
WARM1 : WARM1
WARM2 : WARM2
08 : 8 bit
10 : 10 bit
12 : 12 bit
Setting items Settings Item No.
Video system setting Adjust S001 - S003
Fix S004 - S012