JVC LT-32EX19/AT User manual

SERVICE MANUAL
COPYRIGHT © 2009 Victor Company of Japan, Limited No.YA702<Rev.005>
2009/7
LCD COLOUR TELEVISION
YA702<Rev.005>20097SERVICE MANUAL
LT-32EX19/AT, LT-32EX19/BT, LT-32EX19/BBT,
LT-32EX19/EBT,LT-32EX19/MAT, LT-32EX19/MBT,
LT-32EX19 /NBSK , LT-32EX19/PAT, LT-32EX19/PBT,
LT-32EX19 /RBCK , LT-32EX19/SAT, LT-32EX19/SBT,
LT-32EX19 /VBSK , LT-32EX29/NBSK
COPYRIGHT © 2009 Victor Company of Japan, Limited
<FU3 CHASSIS LINEUP>
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28
No.YA702: LT-32EX19 No.YA703: LT-32BX19 No.YA704: LT-42EX19
No.YA708: LT-42Z49 No.YA709: LT-32Z49
BASIC CHASSIS
FU3

1-2 (No.YA702<Rev.005>)
SPECIFICATION
LT-32EX19/AT, LT-32EX19/BT, LT-32EX19/BBT, LT-32EX19/EBT, LT-32EX19/NBSK, LT-32EX19/SAT, LT-32EX19/SBT, LT-
32EX19/VBSK, LT-32EX29/NBSK
Design & specifications are subject to change without notice.
Items Contents
Dimensions ( W ×H ×D ) 79.1 cm ×57.17 cm ×23.05 cm [with stand]
79.1 cm ×52.05 cm ×10.39 cm [without stand]
Mass 12.5 kg [with stand]
11.5 kg [without stand]
Power Input AC110V - AC240 V, 50 Hz / 60 Hz (Other models)
AC220V - AC240 V, 50 Hz / 60 Hz (LT-32EX19/EBT, LT-32EX19/NBSK, LT-32EX29/NBSK)
Power Consumption 131 W (Standby:1.8 W)
TV RF System B, G, I, D, K, M
Colour System PAL / SECAM / NTSC 3.58 / NTSC 4.43
Stereo System A2 (B/G, D/K), NICAM (B/G, I, D/K)
Teletext System FLOF (Fastext), WST (World Standard System)
Receiving
Frequency
VHF Low
VHF High
UHF
CATV
46.25 MHz - 140.25 MHz
147.25 MHz - 423.25 MHz
431.25 MHz - 863.25 MHz
Mid (X - Z+2, S1 - S10) / Super (S11 - S20) / Hyper (S21 - S41) bands
Intermediate
Frequency
VIF
SIF
38.9 MHz (B, G, I, D, K, M)
32.26 MHz (5.74 MHz: B), 32.15 MHz (5.85 MHz: G), 31.45 MHz (6.55 MHz: I)
31.75 MHz (6.25 MHz: D), 32.15 MHz (5.85 MHz: K)
Colour Sub
Carrier
PAL
SECAM
NTSC
4.43 MHz
4.40625 MHz / 4.25 MHz
3.58 MHz / 4.43 MHz
LCD panel 32V-inch wide aspect (16 : 9)
Screen Size Diagonal : 80.0 cm (H: 69.7 cm ×V:39.2 cm)
Display Pixels Horizontal : 1366 pixels ×Vertical : 768 pixels (W-XGA)
Audio Power Output 6 W + 6 W
Speaker 4.0 cm ×16.0 cm, oval type ×2
Aerial terminal (VHF/UHF) 75 Ωunbalanced, coaxial
Video / Audio
Input-1/2
Component Video
750p / 1125i
625p / 525p / 625i / 525i
RCA pin jack ×3
Y : 1V (p-p) (Sync signal: ±0.35V(p-p), 3-value sync.), 75 Ω/ Pb/Pr : ±0.35V(p-p), 75 Ω
Y : 1V (p-p), Positive (Negative sync provided), 75 Ω/ Pb/Pr : 0.7V(p-p), 75 Ω
Video 1V (p-p), Positive (Negative sync provided), 75 Ω, RCA pin jack ×2
Audio 500mV (rms), High impedance, RCA pin jack ×4
PC (RGB) Input Video D-sub 15 pin ×1
R/G/B : 0.7 V (p-p), 75Ω
HD / VD : 1 V (p-p) to 5 V (p-p), high impedance
< Available signal >
VGA : 640 pixels ×480 pixels (Horizontal : 31.5 kHz / Vertical : 60 Hz)
XGA : 1024 pixels ×768 pixels (Horizontal : 48.4 kHz / Vertical : 60 Hz)
Audio 3.5 mm stereo mini jack ×1
HDMI Input Video HDMI connector ×3
(Digital-input terminal is not compatible with picture signals of computer signal)
Audio Digital: HDMI connector ×3
Analog: 500mV(rms) (-4dBs), high impedance, RCA pin jack ×2 [HDMI-1]
Video / Audio Output Video 1V (p-p), Positive (Negative sync provided), 75 Ω, RCA pin jack ×1
Audio 500mV (rms), Low impedance, RCA pin jack ×2
Headphone 3.5 mm stereo mini jack ×1
Remote Control Unit RM-C2020 (AAA/R6 dry cell battery ×2)

(No.YA702<Rev.005>)1-3
LT-32EX19/MAT, LT-32EX19/MBT
Design & specifications are subject to change without notice.
Items Contents
Dimensions ( W ×H ×D ) 79.1 cm ×57.17 cm ×23.05 cm [with stand]
79.1 cm ×52.05 cm ×10.39 cm [without stand]
Mass 12.5 kg [with stand]
11.5 kg [without stand]
Power Input AC110V - AC240 V, 50 Hz / 60 Hz
Power Consumption 131 W (Standby:1.8 W)
TV RF System For Area-1 setting : B, G, I, D, K, M
For Area-2 setting : M, N
Colour System For Area-1 setting : PAL / SECAM / NTSC 3.58 / NTSC 4.43
For Area-2 setting : NTSC / PAL-M / PAL-N
Stereo System For Area-1 setting : A2 (B/G, D/K), NICAM (B/G. I,DK)
For Area-2 setting : MTS (Multi-channel Television Sound)
Teletext System For Area-1 setting : FLOF (Fastext), WST (World Standard System)
For Area-2 setting : CLOSED CAPTION
Receiving
Frequency
VHF Low
VHF High
UHF
CATV
46.25 MHz - 140.25 MHz (Area-1) / 55.25MHz - 127.25MHz (Area-2)
147.25 MHz - 423.25 MHz (Area-1) / 133.25MHz - 361.25MHz (Area-2)
431.25 MHz - 863.25 MHz (Area-1) / 367.25MHz - 801.25MHz (Area-2)
Mid (X - Z+2, S1 - S10) / Super (S11 - S20) / Hyper (S21 - S41) bands
Intermediate
Frequency
VIF
SIF
38.9 MHz (B, G, I, D, K, M)
32.26 MHz (5.74 MHz: B), 32.15 MHz (5.85 MHz: G), 31.45 MHz (6.55 MHz: I)
31.75 MHz (6.25 MHz: D), 32.15 MHz (5.85 MHz: K)
Colour Sub
Carrier
PAL
SECAM
NTSC
4.43 MHz
4.40625 MHz / 4.25 MHz
3.58 MHz / 4.43 MHz
LCD panel 32V-inch wide aspect (16 : 9)
Screen Size Diagonal : 80.0 cm (H: 69.7 cm ×V:39.2 cm)
Display Pixels Horizontal : 1366 dots ×Vertical : 768 dots (W-XGA)
Audio Power Output 6 W + 6 W
Speaker 4.0 cm ×16.0 cm, oval type ×2
Aerial terminal (VHF/UHF) 75 Ωunbalanced, coaxial
Video / Audio
Input-1/2
Component Video
750p / 1125i
625p / 525p / 625i / 525i
RCA pin jack ×3
Y : 1V (p-p) (Sync signal: ±0.35V(p-p), 3-value sync.), 75 Ω/ Pb/Pr : ±0.35V(p-p), 75 Ω
Y : 1V (p-p), Positive (Negative sync provided), 75 Ω/ Pb/Pr : 0.7V(p-p), 75 Ω
Video 1V (p-p), Positive (Negative sync provided), 75 Ω, RCA pin jack ×2
Audio 500mV (rms), High impedance, RCA pin jack ×4
PC (RGB) Input Video D-sub 15 pin ×1
R/G/B : 0.7 V (p-p), 75Ω
HD / VD : 1 V (p-p) to 5 V (p-p), high impedance
< Available signal >
VGA : 640 pixels ×480 pixels (Horizontal : 31.5 kHz / Vertical : 60 Hz)
XGA : 1024 pixels ×768 pixels (Horizontal : 48.4 kHz / Vertical : 60 Hz)
Audio 3.5 mm stereo mini jack ×1
HDMI Input Video HDMI connector ×3
(Digital-input terminal is not compatible with picture signals of computer signal)
Audio Digital: HDMI connector ×3
Analog: 500mV(rms) (-4dBs), high impedance, RCA pin jack ×2 [HDMI-1]
Video / Audio Output Video 1V (p-p), Positive (Negative sync provided), 75 Ω, RCA pin jack ×1
Audio 500mV (rms), Low impedance, RCA pin jack ×2
Headphone 3.5 mm stereo mini jack ×1
Remote Control Unit RM-C2020 (AAA/R6 dry cell battery ×2)

1-4 (No.YA702<Rev.005>)
LT-32EX19/PAT, LT-32EX19/PBT
Design & specifications are subject to change without notice.
Items Contents
Dimensions ( W ×H ×D ) 79.1 cm ×57.17 cm ×23.05 cm [with stand]
79.1 cm ×52.05 cm ×10.39 cm [without stand]
Mass 12.5 kg [with stand]
11.5 kg [without stand]
Power Input AC110V - AC240 V, 50 Hz / 60 Hz
Power Consumption 131 W (Standby:1.8 W)
TV RF System M
Colour System TV mode NTSC 3.58
Video mode PAL / SECAM / NTSC 3.58 / NTSC 4.43
Stereo System MTS (Multi-channel Television Sound)
Teletext System CLOSED CAPTION
Receiving
Frequency
VHF Low
VHF High
UHF
CATV
55.25MHz - 127.25MHz
133.25MHz - 361.25MHz
367.25MHz - 801.25MHz
Mid (X - Z+2, S1 - S10) / Super (S11 - S20) / Hyper (S21 - S41) bands
Intermediate
Frequency
VIF
SIF
45.75 MHz
33.5 MHz (4.5 MHz)
Colour Sub
Carrier
PAL
SECAM
NTSC
4.43 MHz
4.40625 MHz / 4.25 MHz
3.58 MHz / 4.43 MHz
LCD panel 32V-inch wide aspect (16 : 9)
Screen Size Diagonal : 80.0 cm (H: 69.7 cm ×V:39.2 cm)
Display Pixels Horizontal : 1366 dots ×Vertical : 768 dots (W-XGA)
Audio Power Output 6 W + 6 W
Speaker 4.0 cm ×16.0 cm, oval type ×2
Aerial terminal (VHF/UHF) 75 Ωunbalanced, coaxial
Video / Audio
Input-1/2
Component Video
750p / 1125i
625p / 525p / 625i / 525i
RCA pin jack ×3
Y : 1V (p-p) (Sync signal: ±0.35V(p-p), 3-value sync.), 75 Ω/ Pb/Pr : ±0.35V(p-p), 75 Ω
Y : 1V (p-p), Positive (Negative sync provided), 75 Ω/ Pb/Pr : 0.7V(p-p), 75 Ω
Video 1V (p-p), Positive (Negative sync provided), 75 Ω, RCA pin jack ×2
Audio 500mV (rms), High impedance, RCA pin jack ×4
PC (RGB) Input Video D-sub 15 pin ×1
R/G/B : 0.7 V (p-p), 75Ω
HD / VD : 1 V (p-p) to 5 V (p-p), high impedance
< Available signal >
VGA : 640 pixels ×480 pixels (Horizontal : 31.5 kHz / Vertical : 60 Hz)
XGA : 1024 pixels ×768 pixels (Horizontal : 48.4 kHz / Vertical : 60 Hz)
Audio 3.5 mm stereo mini jack ×1
HDMI Input Video HDMI connector ×3
(Digital-input terminal is not compatible with picture signals of computer signal)
Audio Digital: HDMI connector ×3
Analog: 500mV(rms) (-4dBs), high impedance, RCA pin jack ×2 [HDMI-1]
Video / Audio Output Video 1V (p-p), Positive (Negative sync provided), 75 Ω, RCA pin jack ×1
Audio 500mV (rms), Low impedance, RCA pin jack ×2
Headphone 3.5 mm stereo mini jack ×1
Remote Control Unit RM-C2020 (AAA/R6 dry cell battery ×2)

(No.YA702<Rev.005>)1-5
LT-32EX19/RBCK
Design & specifications are subject to change without notice.
Items Contents
Dimensions ( W ×H ×D ) 79.1 cm ×57.17 cm ×23.05 cm [with stand]
79.1 cm ×52.05 cm ×10.39 cm [without stand]
Mass 12.5 kg [with stand]
11.5 kg [without stand]
Power Input AC110V - AC240 V, 50 Hz / 60 Hz
Power Consumption 131 W (Standby:1.8 W)
TV RF System M, N
Colour System NTSC / PAL-M / PAL-N
Stereo System MTS (Multi-channel Television Sound)
Teletext System CLOSED CAPTION
Receiving
Frequency
VHF Low
VHF High
UHF
CATV
46.25 MHz - 140.25 MHz
147.25 MHz - 423.25 MHz
431.25 MHz - 863.25 MHz
Mid (X - Z+2, S1 - S10) / Super (S11 - S20) / Hyper (S21 - S41) bands
Intermediate
Frequency
VIF
SIF
38.0 MHz
33.5 MHz (4.5 MHz)
Colour Sub
Carrier
PAL
SECAM
NTSC
4.43 MHz
4.40625 MHz / 4.25 MHz
3.58 MHz / 4.43 MHz
LCD panel 32V-inch wide aspect (16 : 9)
Screen Size Diagonal : 80.0 cm (H: 69.7 cm ×V:39.2 cm)
Display Pixels Horizontal : 1366 dots ×Vertical : 768 dots (W-XGA)
Audio Power Output 6 W + 6 W
Speaker 4.0 cm ×16.0 cm, oval type ×2
Aerial terminal (VHF/UHF) 75 Ωunbalanced, coaxial
Video / Audio
Input-1/2
Component Video
750p / 1125i
625p / 525p / 625i / 525i
RCA pin jack ×3
Y : 1V (p-p) (Sync signal: ±0.35V(p-p), 3-value sync.), 75 Ω/ Pb/Pr : ±0.35V(p-p), 75 Ω
Y : 1V (p-p), Positive (Negative sync provided), 75 Ω/ Pb/Pr : 0.7V(p-p), 75 Ω
Video 1V (p-p), Positive (Negative sync provided), 75 Ω, RCA pin jack ×2
Audio 500mV (rms), High impedance, RCA pin jack ×4
PC (RGB) Input Video D-sub 15 pin ×1
R/G/B : 0.7 V (p-p), 75Ω
HD / VD : 1 V (p-p) to 5 V (p-p), high impedance
< Available signal >
VGA : 640 pixels ×480 pixels (Horizontal : 31.5 kHz / Vertical : 60 Hz)
XGA : 1024 pixels ×768 pixels (Horizontal : 48.4 kHz / Vertical : 60 Hz)
Audio 3.5 mm stereo mini jack ×1
HDMI Input Video HDMI connector ×3
(Digital-input terminal is not compatible with picture signals of computer signal)
Audio Digital: HDMI connector ×3
Analog: 500mV(rms) (-4dBs), high impedance, RCA pin jack ×2 [HDMI-1]
Video / Audio Output Video 1V (p-p), Positive (Negative sync provided), 75 Ω, RCA pin jack ×1
Audio 500mV (rms), Low impedance, RCA pin jack ×2
Headphone 3.5 mm stereo mini jack ×1
Remote Control Unit RM-C2020 (AAA/R6 dry cell battery ×2)

1-6 (No.YA702<Rev.005>)
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
0.7mA AC (r.m.s.).
However, in tropical area, this must not exceed 0.35V
AC (r.m.s.). This corresponds to 0.3mA 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

(No.YA702<Rev.005>)1-7
1.2 INSTALLATION
1.2.1 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.
1.2.2 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.
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.
1.2.3 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.
1.3 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.
VENTILATION HOLE
*Diagram differs from actual appearance.
*Diagram differs from actual appearance.
150 mm
200 mm
150 mm
200 mm
50 mm
POWER
It fixes in a band.
TV STAND
*Diagram differs from actual appearance.

1-8 (No.YA702<Rev.005>)
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).
1.3.4 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 = 131072 hours
(1) Press the [DISPLAY] key and [MUTING] key simultaneously,
then enter the SERVICE MODE.
(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.(Refer to the below figure)
1.3.5 HOW TO RESET THE OPERATING TIME
(1) Press the [DISPLAY] key and [MUTING] key
simultaneously, then enter the SERVICE MODE.
(2) When the Main Menu is displayed, press [2] key to enter
the self check mode.
(3) When the self check screen is displayed, press [ZOOM]
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.
• Cannot reset Toytal operating time.
Press [2] key
*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 2 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.
SERVICE MODE SCREEN
SELF CHECK MODE SCREEN
SERVICE MENU Ver.xxx
1. ADJUST
2. SELF CHECK
3. I2C STOP
The operating time is displayed.
MAX is displayed when the maximum
count time is exceeded.
The total operating time is displayed.
[Can not reset.]
LOB 9 AV SW
MEM 0 MEI 3
TUN 0 HDM 3
SYN NG SMD 3
CMD 0 HDMI SW 0
SCL2:H SDA2:H SMD RST0000
TIME 685536
TOTAL 1371072 MAX

(No.YA702<Rev.005>)1-9
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
2.1 FEATURES
Clear SD
LCD picture is unstable due to a large number of signal noise.
Such noise appears extensively especially when an LCD
displays SD signals. Clear SD mode resolves disadvantage for
better picture quality.
HDMI INPUT
By connecting a HDMI compatible device, high definition
pictures can be displayed on your TV in their digital form.
COLOUR MANAGEMENT
This function ensures dull colours are compensated to
produce natural hues.
2.2 MAIN DIFFERENCE LIST
Item LT-32EX19/AT LT-32EX19/BBT LT-32EX19/EBT LT-32EX19/MAT LT-32EX19/NBSK
Paint Color Glossy Black Glossy Black Glossy Black Glossy Black Glossy Black
Power Input AC110V - AC240V AC110V - AC240V AC220V - AC240V AC110V - AC240V AC220V - AC240V
Choke Coil NO NO YES NO YES
Plug Type Round pin type Round pin type (TISI
Plug)
Round pin type Round pin type Round pin type
OSD Language Eng, Chi, Rus, Ara,
Fre, Thai, Viet, Ukr,
Spa, Mal
Eng, Chi, Rus, Ara,
Fre, Thai, Viet, Ukr,
Spa, Mal
Eng, Chi, Rus, Ara,
Fre, Thai, Viet, Ukr,
Spa, Mal
Eng, Chi, Spa, Por,
Rus
Eng, Chi, Rus, Ara,
Fre, Thai, Viet, Ukr,
Spa, Mal
Stereo System A2/NICAM A2/NICAM A2/NICAM A2/NICAM (Area-1)
MTS (Area-2)
A2/NICAM
Teletext TELETEXT TELETEXT TELETEXT TELETEXT (Area-1)
CLOSED CAPTION
(Area-2)
TELETEXT
LCD Panel Unit QLD0566-001 QLD0620-001 QLD0620-001 QLD0566-001 QLD0620-001
DIGITAL PWB SFU0D601A-H2 SFU0D604A-H8 SFU0D604A-H2 SFU0D608A-H2 SFU0D613A-H2
POWER PWB SFU-9601A-H2 SFU-9607A-H8 SFU-9608A-H2 SFU-9601A-H2 SFU-9608A-H2
LED PB PWB SFU-8601A-H2 SFU-8601A-H8 SFU-8601A-H2 SFU-8601A-H2 SFU-8603A-H2
SW PWB SFU-7601A-H2 SFU-7601A-H8 SFU-7601A-H2 SFU-7601A-H2 SFU-7604A-H2
REMOTE PWB SFU-7602A-H2 SFU-7602A-H8 SFU-7602A-H2 SFU-7602A-H2 SFU-7605A-H2
ANALOG PWB SFU-1601A-H2 SFU-1601A-H8 SFU-1601A-H2 SFU-1601A-H2 SFU-1604A-H6
Item LT-32EX19/PAT LT-32EX19/RBCK LT-32EX19/SAT LT-32EX19/VBSK LT-32EX29/NBSK
Power Input Glossy Black Glossy Black Glossy Black Glossy Black Silver
Power Input AC110V - AC240V AC110V - AC240V AC110V - AC240V AC110V - AC240V AC220V - AC240V
Choke Coil NO NO NO NO YES
Plug Type Flat pin type Argentina pin type UK pin type Round pin type Round pin type
OSD Language Eng, Chi, Spa, Por,
Rus
Eng, Chi, Spa, Por,
Rus
Eng, Chi, Rus, Ara,
Fre, Thai, Viet, Ukr,
Spa, Mal
Eng, Chi, Rus, Ara,
Fre, Thai, Viet, Ukr,
Spa, Mal
Eng, Chi, Rus, Ara,
Fre, Thai, Viet, Ukr,
Spa, Mal
Stereo System MTS MTS A2/NICAM A2/NICAM A2/NICAM
Teletext CLOSED CAPTION CLOSED CAPTION TELETEXT TELETEXT TELETEXT
LCD PANEL UNIT QLD0566-001 QLD0620-001 QLD0566-001 QLD0620-001 QLD0620-001
DIGITAL PWB SFU0D609A-H2 SFU0D623A-CK SFU0D610A-H2 SFU0D612A-H2 SFU0D613A-H2
POWER PWB SFU-9601A-H2 SFU-9605A-CK SFU-9601A-H2 SFU-9607A-H2 SFU-9608A-H2
LED PWB SFU-8601A-H2 SFU-8604A-CK SFU-8601A-H2 SFU-8601A-H2 SFU-8603A-H2
SW PWB SFU-7601A-H2 SFU-7607A-CK SFU-7601A-H2 SFU-7601A-H2 SFU-7604A-H2
REMOTE PWB SFU-7602A-H2 SFU-7608A-CK SFU-7602A-H2 SFU-7602A-H2 SFU-7605A-H2
ANALOG PWB SFU-1603A-H2 SFU-1605A-CK SFU-1601A-H2 SFU-1601A-H2 SFU-1604A-H6

1-10 (No.YA702<Rev.005>)
2.3 HOW TO IDENTIFY MODELS
Item LT-32EX19/AT LT-32EX19/BT Description
LCD PANEL UNIT QLD0566-001 QLD0620-001 No compatible
DIGITAL PWB SFU0D601A-H2 SFU0D604A-H2 No compatible
POWER PWB SFU-9601A-H2 SFU-9607A-H2 No compatible
Item LT-32EX19/MAT LT-32EX19/MBT Description
LCD PANEL UNIT QLD0566-001 QLD0620-001 No compatible
DIGITAL PWB SFU0D608A-H2 SFU0D605A-H2 No compatible
POWER PWB SFU-9601A-H2 SFU-9607A-H2 No compatible
Item LT-32EX19/PAT LT-32EX19/PBT Description
LCD PANEL UNIT QLD0566-001 QLD0620-001 No compatible
DIGITAL PWB SFU0D609A-H2 SFU0D606A-H2 No compatible
POWER PWB SFU-9601A-H2 SFU-9607A-H2 No compatible
Item LT-32EX19/SAT LT-32EX19/SBT Description
LCD PANEL UNIT QLD0566-001 QLD0620-001 No compatible
DIGITAL PWB SFU0D610A-H2 SFU0D611A-H2 No compatible
POWER PWB SFU-9601A-H2 SFU-9607A-H2 No compatible
Distinguish name is added at the bottom of the rating label.
LT-32EX19
LT-32EX19PAT
LT-32EX19PBT
LT-32EX19BBT
LT-32EX19
LT-32EX19SAT
LT-32EX19AT
LT-32EX19SBT
LT-32EX19BT
MODEL No.
LT-32EX19
LT-32EX19MAT
LT-32EX19EBT
LT-32EX19MBT
32EX19-RBCK
32EX19-NBSK
LT-32EX19
32EX29-VBSK
MODEL No.
LT-32EX29
32EX29-NBSK

(No.YA702<Rev.005>)1-11
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 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 flashing on
and off.
Item Specifications
QLD0566-001 QLD0620-001
Maximum dimensions ( W ×H ×D ) 76.0 cm ×45.0 cm ×4.5 cm 76.0 cm ×45.0 cm ×4.8 cm
Weight 6.5 kg 5.7 kg
Screen size Diagonal : 80.0 cm (H: 69.7 cm ×V:39.2 cm)
Aspect ratio 16 : 9
Drive device / system a-Si-TFT active matrix system
Resolution Horizontally 1366 ×Vertically 768 ×RGB <W-XGA> 3147264 dots in total
Pixel pitch (pixel size) Horizontally: 0.51075 mm, Vertically: 0.17025 mm
Displayed colour 16777216 colours 256 colours for R G and B
Brightness 450cd/m2500cd/m2
Contrast ratio 2500 : 1 1200 : 1
Response time (Tr) less than 6.5 ms less than 8 ms
View angle (Horizontally) 178°
View angle (Vertically) 178°
Surface polarizer Anti-Glare type Low reflective coat
Colour filter Vertical stripe
Backlight Cold cathode fluorescent lamp ×7(U-type) Cold cathode fluorescent lamp ×12
Power supply voltage in LCD 12 V
Power supply voltage in inverter 24 V
Panel interface system LVDS (Low Voltage Differential Signaling)

1-12 (No.YA702<Rev.005>)
2.4.2 MAIN CPU PIN FUNCTION [IC7001 : DIGITAL PWB]
Pin Pin name I/O Function
1 SDVDD - 3.3V power supply
2 VDD33BIAS - 3.3V power supply
3 REFRIN I Bias setting for LVDS
4 VSS33GIAS - GND
5 OTXOUT4P - Not used
6 OTXOUT4M - Not used
7 OTXOUT3P - Not used
8 OTXOUT3M - Not used
9 OTXCLKOUTP - Not used
10 OTXCLKOUTM - Not used
11 VDD33LVDS - 3.3V power supply
12 OTXOUT2P - Not used
13 OTXOUT2M - Not used
14 VSS33LVDS - GND
15 OTXOUT1P - Not used
16 OTXOUT1M - Not used
17 OTXOUT0P - Not used
18 OTXOUT0M - Not used
19 LPF2 I LPF setting for PLL
20 PLLAVDD - 3.3V power supply
21 VCCQ33 - 3.3V power supply
22 VCCQ10 - 1.05V power supply
23 VCCQ10 - 1.05V power supply
24 SXIN I 36.864MHz oscillation for sampling clock
25 SXOUT O 36.864MHz oscillation for sampling clock
26 GPIO13/CSIO0_TXD/
UART0_TXD/MSQ
O Reset for HDMI-2 [Reset=L]
27 GPIO14/CSIO0_RXD/
UART0_RXD/MSD
O Power LED(blue lighting [ON=H]
28 GPIO15/CSIO0_SCLK/
MST
- Not used
29 GPIO16/CSIO0_RTS/
UART0_RTS/MSN
- Not used
30 GPIO17/CSIO0_CTS/
UART0_CTS
O Power on/off control main power [ON=L]
31 GPIO20/CSIO1_TXD/
UART1_TXED
O Power on/off control PFC [ON=L]
32 I2SMCLK O Master clock for I2S BUS
33 I2SSD1 I/O Data for I2S bus
34 VCCQ33 - 3.3V power supply
35 I2SWS1 O Word select for I2S bus
36 I2SSCLK1 O Clock for I2S bus
37 GPIO21/CSIO1_RXD/
UART1_RXD
O
Power on/off control for low bias line [ON= L]
38 GPIO22/CSIO1_SCLK/
SODIF
O Reset for HDMI-1 [Reset=L]
39 SDVDD - 3.3V power supply
40 VCCQ10 - 1.05V power supply
41 VCCQ10 - 1.05V power supply
42 VBUSUSB - Not used
43 R_OUT1 O Audio out R for Monitor
44 SDAVSS1 - GND
45 VCOM1_DAC O Reference voltage setting
46 SDAVDD1 - 3.3V power supply
47 L_OUT1 O Audio out L for Monitor
48 VCCQ33 - 3.3V power supply
49 R_OUT2 O Audio out R for Main
50 SDAVSS2 - GND
51 VCOM2_DAC O Reference voltage setting
52 SDAVDD2 - 3.3V power supply
53 L_OUT2 - Audio out L for Main
54 SDVDD - 3.3V power supply
55 DGND - GND
56 SMUX_AVDD33 O 3.3V power supply
57 SMUX_AVSS - GND
58 VREF1 I Reference voltage setting
59 VREF2 I Reference voltage setting
60 SIF I SIF for VHF/UHF tuner
61 SADC_AVDD33 - 3.3V power supply
62 SADC_AVSS - GND
63 R_IN/I2SWS3 I Audio input R
64 DMY/I2SSCK3 - Not used
65 SADC_AVSS - GND
66 SADC_AVDD33 - 3.3V power supply
67 VCOM_SOUNDADC I Reference voltage setting
68 SADC_AVDD33 - 3.3V power supply
69 SADC_AVSS - GND
70 L_IN/I2SSD3 I Audio input L
71 SADC_AVSS - GND
72 SADC_AVDD33 - 3.3V power supply
73 VCCQ10 - 1.05V power supply
74 VCCQ33 - 3.3V power supply
75 DFPUSB - Not Used
76 DFMUSB - Not Used
77 VCCQ10 - 1.05V power supply
78 VCCQ10 - 1.05V power supply
79 VCCQ10 - 1.05V power supply
80 AVDDPLL - 3.3V power supply
81 PLLXFCA I Filter setting for HDMI
82 AVSSPLL - GND
83 PLLXFCP I Filter setting for HDMI
84 AVSSPLL - GND
85 PLLXFCX I Filter setting for HDMI
86 AVSSPLL - GND
87 PWR I Power status detect for HDMI
88 HDMISCL I Clock for I2C bus (for HDMI)
89 HDMISCA I/O Data for I2C bus (for HDMI)
90 VSSE - GND
91 VDDE - 3.3V power supply
92 AVDDHDMI - 3.3V power supply
93 RXCN I TMDS clock for HDMI
94 RXCP I TMDS clock for HDMI
95 AVSSHDMI - GND
96 RX0N I TMDS data for HDMI
97 RX0P I TMDS data for HDMI
98 AVDDHDMI - 3.3V power supply
99 AVSSHDMI - GND
100 RX1N I TMDS data for HDMI
101 RX1P I TMDS data for HDMI
102 AVDDHDMI - 3.3V power supply
103 RX2N I TMDS data for HDMI
104 RX2P I TMDS data for HDMI
105 AVSSHDMI - GND
106 EXTRES I For external resister
107 PVDD - 3.3V power supply
108 PVSS - GND
109 DGND - GND
110 VCCQ10 - 1.05V power supply
111 SDVDD - 3.3V power supply
112 VDDQ - GND
113 XOUT O 27MHz oscillation for CPU system clock
114 XIN I 27MHz oscillation for CPU system clock
115 VCCQ10 - 1.05V power supply
116 VCCQ33 - 3.3V power supply
117 MPSEL I Mode select for external operation [Exter-
nal=L]
118 SDO O Data for external flash memory
Pin Pin name I/O Function

(No.YA702<Rev.005>)1-13
119 SDI I Data for external flash memory
120 CS O Chip select for external flash memory
121 RESET I CPU reset [Reset=L]
122 VCCQ10 - 1.05V power supply
123 SCK O Clock for external flash memory
124 GOIO23/CSIO1_RTS/
UART1_RTS/
UART3_TXD
- Not used
125 GOIO24/CSIO1_CTS/
UART1_CTS/
UART3_RXD
- Not used
126 SDITDO O Data for external flash memory
127 SDITDI I Data for external flash memory
128 SDITCK I Clock for external flash memory
129 VCCQ10 - 1.05V power supply
130 SDVDD - 3.3V power supply
131 VCCQ33 - 3.3V power supply
132 SDITRST I Reset for external flash memory
133 SDITMS I Mode select for external flash memory
134 GPIO00/MFT0A/MFT1B/
PWD0
O DC dimming control for back-light inverter
135 GPIO01/MFT1A/MFT0B/
PWD1
O
PWM dimming control for back-light inverter
136 GPIO02/MFT2A/MFT7B/
UART2_TXD
O Power on/off control for back-light [60Hz=H]
137 GPIO03/MFT3A/MFT2B/
UART2_RXD
I Headphone detect [Detect=H]
138 GPIO04/MFT4A/MFT3B/
CSIO2_TXD
O Power on/off control for LCD [ON=L]
139 GPIO05/MFT5A/MFT4B/
CSIO2_RXD
I Remote control sensor input
140 GPIO06/MFT6A/MFT5B/
CSIO2_SCLK
O Rest for HDMI-3
141 GPIO07/SCL0 O Clock for I2C bus (EEPROM)
142 GPIO10/_SDA0 I/O Data for I2C bus (EEPROM)
143 VCCQ10 - 1.05V power supply
144 GPIO11/SCL1 O Clock for I2C bus (fro tuner/audio/HDMI)
145 GPIO12/SDA1 I/O Data for I2C bus (fro tuner/audio/HDMI)
146 HDIN(PC) I H sync for PC
147 VDIN(PC) I V sync for PC
148 VCCQ33 - 3.3V power supply
149 PLLSAVDD - 3.3V power supply
150 SDVDD - 3.3V power supply
151 PLLDVDD - 3.3V power supply
152 PLLMAVDD - 3.3V power supply
153 ADIN4/INPUT04/
CSIO_CTS/UART0_CTS
I AFT voltage for VHF/UHF tuner
154 ADIN3/INPUT03 I Key scan for side control (Input/Vol+/Vol-)
155 ADIN2/INPUT02/INT2 I Key scan for side control (Power/ CH+/
CH-/Menu)
156 ADIN1/INPUT01/INT1 - Not used
157 ADIN0/INPUT00/INT0 I Power abnormality detection [Emer-
gent=H]
158 MAVDD - 3.3V power supply
159 SSIN1 I Y sync input
160 SSIN2 - Not used
161 VINFB - Not used
162 DGND - GND
163 ADCVDDA18 - 1.8V power supply
164 VIN1A I PC G for input-PC
165 ADCVSSA - GND
166 VIN2A I Y for input-1
167 ADCVDDA18 - 1.8V power supply
168 VVIN3A - Not used
169 ADCVSSA - GND
170 VREFA I Reference voltage setting
171 ADCVDDA33 - 3.3V power supply
Pin Pin name I/O Function
172 AVSSSL - GND
173 AVDDSL - 3.3V power supply
174 ADCVDDMX33 - 3.3V power supply
175 ADCVDDMX18 - 1.8V power supply
176 REXT I For external resistor
177 VRP I Reference voltage setting
178 VRM I Reference voltage setting
179 ADCVSSMX - GND
180 ADCVDDB18 - 1.8V power supply
181 VIN1B I PC B for input-PC
182 ADCVSSB - GND
183 VIN2B I Pb for input-1
184 ADCVDDB18 - 1.8V power supply
185 VIN3B - Not used
186 ADCVSSB - GND
187 VREFB I Reference voltage setting
188 ADCVDDB33 - 3.3V power supply
189 ADCVDDC18 - 1.8V power supply
190 VIN1C I PC R for input-PC
191 ADCVSSC - GND
192 VIN2C I Pr for input-1
193 ADCVDDC18 - 1.8V power supply
194 VREFC I Reference voltage setting
195 ADCVSSC - GND
196 ADCVDDC33 - 3.3V power supply
197 PLL1VDD33A - 3.3V power supply
198 LPF1 I LPF setting for PLL
199 PLL1VSS33A - GND
200 PLL1VDDD - 3.3V power supply
201 PLL1VSSD - GND
202 VCCQ10 - 1.05V power supply
203 ETXOUT4P - Not used
204 ETXOUT4M - Not used
205 ETXOUT3P O LVDS data for LCD panel
206 ETXOUT3M O LVDS data for LCD panel
207 ETXCLKOUTP O LVDS data for LCD panel
208 ETXCLKOUTM O LVDS data for LCD panel
209 VDD33LVDS - 3.3V power supply
210 ETXOUT2P O LVDS data for LCD panel
211 ETXOUT2M O LVDS data for LCD panel
212 VSS33LVDS - GND
213 ETXOUT1P O LVDS data for LCD panel
214 ETXOUT1M O LVDS data for LCD panel
215 ETXOUT0P O LVDS data for LCD panel
216 ETXOUT0M O LVDS data for LCD panel
Pin Pin name I/O Function

1-14 (No.YA702<Rev.005>)
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 (MAIN UNIT)
3.2.1 REMOVING THE REAR COVER (Fig.3-1)
(1) Remove the 1 screw [A].
(2) Remove the POWER CORD COVER.
(3) Remove the POWER CORD.
(4) Remove the 2 screws [B], 16 screws [C] and 3 screws [D].
(5) Remove the REAR COVER.
3.2.2 REMOVING THE POWER PWB (Fig.3-1)
• Remove the REAR COVER.
• Remove the POWER CORD.
(1) Remove the 6 screws [E].
(2) Remove the POWER PWB.
3.2.3 REMOVING THE CHOKE COIL (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the 2 screws [F].
(2) Remove the CHOKE COIL.
3.2.4 REMOVING THE ANALOG PWB (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the 3 screws [G].
(2) Remove the ANALOG PWB.
3.2.5 REMOVING THE DIGITAL PWB (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the 1 screw [H].
(2) Remove the TERMINAL COVER.
(3) Remove the 4 screws [J].
(4) Remove the DIGITAL PWB.
3.2.6 REMOVING THE SW PWB (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the 2 hooks [a].
(2) Remove the CONTROL KNOB with SW PWB.
(3) Remove the SW PWB from the CONTROL KNOB.
3.2.7 REMOVING THE REMOTE PWB (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the 1 screw [K].
(2) Remove the REMOTE PWB.
3.2.8 REMOVING THE SPEAKER (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the SPEKAER.
3.2.9 REMOVING THE STAND (Fig.3-1)
(1) Remove the 4 screws [L].
(2) Remove the STAND.
3.2.10 REMOVING THE LED PWB (Fig.3-1)
• Remove the REAR COVER.
• Remove the STAND.
(1) Remove the 6 screws [M], 2 screws [N] and 3 screws [P].
(2) Remove the MAIN BASE.
(3) Remove the 2 screws [Q] and 2 screws [R].
(4) Remove the BOTTOM FRAME.
(5) Remove the 2 screws [S].
(6) Remove the LED PWB.
3.2.11 REMOVING THE LCD PANEL UNIT (Fig.3-1)
• Remove the REAR COVER.
• Remove the STAND.
• Remove the MAIN BASE.
• Remove the BOTTOM FRAME.
(1) Remove the 1 screw [K].
(2) Remove the REMOTE PWB and LCD SUPPORT
BRACKET(R).
(3) Remove the 1 screw [T].
(4) Remove the LCD SUPPORT BRACKET(L).
(5) Remove the 3 screws [U].
(6) Remove the TOP FRAME.
(7) Remove the LCD PANEL UNIT from the FRONT PANEL.

(No.YA702<Rev.005>)1-15
Fig.3-1
FRONT
UU
QQ
RR
TT
SS
KK
NN
GG
JJ
LL
HH
NN
EE
MM
PP
BB DD
AA
CC
aa
REAR COVER
POWER CORD
POWER CORD
COVER
POWER PWB
STAND
DIGITAL PWB
ANALOG PWB
MAIN BASE
SPEAKER
LCD SUPPORT BRACKET
LCD SUPPORT BRACKET
BOTTOM FRAME
SPEAKER
LED PWB
REMOTE PWB
SW PWB
CONTROL KNOB
TERMINAL
BASE
TOP FRAME
LCD PANEL UNIT
FF
CHOKE COIL
[LT-32EX19/NBSK]
[LT-32EX29/NBSK]

1-16 (No.YA702<Rev.005>)
3.3 DISASSEMBLY PROCEDURE (LCD PANEL UNIT [QLD0566-001])
3.3.1 REMOVING THE CONTROL PWB (Fig.3-2)
• Remove the REAR COVER.
• Remove the STAND.
• Remove the MAIN BASE.
(1) Remove the 4 screws [A].
(2) Remove the CONTROL PWB COVER.
(3) Remove the CONTROL PWB.
3.3.2 REMOVING THE INVERTER PWB (Fig.3-2)
• Remove the REAR COVER.
(1) Remove the 6 screws [B].
(2) Remove the INVERTER PWB COVER.
(3) Remove the INVERTER PWB.
Fig.3-2
A
B
LCD CONTROL PWB
INVERTER PWB
LCD PANEL UNIT
FRONT

(No.YA702<Rev.005>)1-17
3.4 DISASSEMBLY PROCEDURE (LCD PANEL UNIT [QLD0620-001])
3.4.1 REMOVING THE LCD CONTROL PWB (Fig.3-3)
• Remove the REAR COVER.
• Remove the STAND.
• Remove the MAIN BASE.
(1) Remove the 2 screws [A].
(2) Remove the LCD CONTROL PWB COVER.
(3) Remove the LCD CONTROL PWB.
3.4.2 REMOVING THE INVERTER PWB (Fig.3-3)
• Remove the REAR COVER.
• Remove the STAND.
• Remove the MAIN BASE.
(1) Remove the 3 screws [B].
(2) Remove the INVERTER PWB COVER.
(3) Remove the INVERTER PWB.
3.4.3 REMOVING THE BACK LIGHT UNIT (Fig.3-3)
• Remove the REAR COVER.
• Remove the LCD PANEL UNIT.
(1) Remove the 4 screws [C].
(2) Remove the PANEL FRAME.
(3) Remove the LCD PANEL from the BACK LIGHT UNIT.
Fig.3-3
LCD PANEL
PANEL FRAME
BACK LIGHT UNIT
LCD PANEL UNIT
INVERTER PWB
COVER
LCD CONTROL PWB
COVER
B
C
A
INVERTER PWB
CONTROL PWB

1-18 (No.YA702<Rev.005>)
3.5 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.
3.5.1 MEMORY IC TABLE
3.5.2 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. SERVICE MODE SETTING [SYSTEM CONSTANT SETTING]
(1) Press the [DISPLAY] key and [MUTING] key
simultaneously, then enter the SERVICE MODE.
(2) Press the [8] key, then enter the SYSTEM CONSTANT
SET SCREEN.
(3) Check the setting values of the SYSTEM CONSTANT
SET. If the value is different, set the correct value with
the [FUNCTION /]key.
5. RECEIVING CHANNEL SETTING
Refer to the OPERATING INSTRUCTIONS and set the
receive channels (Channels Preset) as described.
6. 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.
7. SERVICE MODE SETTING [ADJUST MODE SETTING]
Verify what to set in the SERVICE MODE, and set whatever is
necessary (Fig.3-4). Refer to the SERVICE ADJUSTMENT for
setting.
* Input PAL White Raster signal 75% ( Y = 525 mV and SYNC
= 0.3 V ) at VDO 2 for adjustment.
SERVICE MODE SCREEN
Fig.3-4
Symbol Number of pins Mounting PWB Main content of data
IC7002 8-pin DIGITAL PWB Setting value of IC7001 (MAIN CPU) is memorized.
IC7003 8-pin DIGITAL PWB Programming data of IC7001 (MAIN CPU) is memorized.
Setting mode Iitem No. Setting items
1.ADJUST S001 R DRIVE MID
S002 G DRIVE MID
S003 B DRIVE MID
S004 R DRIVE COOL
S005 G DRIVE COOL
S006 B DRIVE COOL
S007 R DRIVE WARM
S008 G DRIVE WARM
S009 B DRIVE WARM
SERVICE MODE SCREEN
Press [1] key
Press [8] key
ADJUST MODE SCREEN
SERVICE MENU Ver.xxx
1. ADJUST
2. SELF CHECK
3. I2C STOP
S001 R DRIVE MID 128
PAL FULL STD M
System Constant
1. For Saudi Arabia : xxx
2. Area Menu : xxx
3. Area : xxx
4. For Argentina : xxx
5. For Philippines : xxx
6. Language Number : xxx
7. Clear SD : xxx
Version
Model=FU2 LT-22EX19
Soft=x.xx, E2PROM =xxxx
Trans ver=x.xx
Para ver=xxxxxx
Date=xxxxxxx
SYSTEM CONSTANT SCREEN

(No.YA702<Rev.005>)1-19
SYSTEM CONSTANT SETTING
3.5.3 SETTINGS OF FACTORY SHIPMENT [LT-32EX19/AT, LT-32EX19/BT, LT-32EX19/BBT, LT-32EX19/EBT, LT-32EX19/NB-
SK, LT-32EX19/SAT, LT-32EX19/SBT, LT-32EX19/VBSK, LT-32EX29/NBSK]
3.5.3.1 BUTTON OPERATION
3.5.3.2 REMOTE CONTROL DIRECT OPERATION
3.5.3.3 REMOTE CONTROL MENU OPERATION
(1) PICTURE
(2) SOUND
(3) FEATURES
(4) SET UP
Setting item
Setting value
Other models LT-32EX19/MAT
LT-32EX19/MBT
LT-32EX19/PAT
LT-32EX19/PBT
LT-32EX19/SAT
LT-32EX19/SBT LT-32EX19/RBCK
1.For Saudi Arabia No No No Yes No
2.Area Menu Off On Off Off Off
3.Area 11212
4.For Argentina No No No No Yes
5.For Philipines No No Yes No No
6.Language Number 10 5 5 10 5
7.HDMI 33333
8.Clear SD RV RV RV RV RV
Setting item Setting position
Power Off
Channel PR1
Volume 15
TV/AV TV
Setting item Setting position
Channel PR1
Volume 15
Sub Power Off
Setting item Setting position
Picture Mode Bright
White balance Cool
FEATURES
Clear SD RF Mode-1
Ohter Off
Digital VNR On
DigiPure On
Pull Down Off
Colour Management On
Picture Management On
Smart Picture On
Dynamic Backlight On
MPEG Noise Reduction Off
Colour System TV Depends on PR/CH
EXT Auto
Zoom Auto (Panoramic)
Setting item Setting position
STEREO / I•II Stereo sound
Sound Meister Dynamic
Treble -
Bass -
Surround -
Balance Centre
Voice Enhancer Off
Al Volume On
Setting item Setting position
On Timer 00:00
Sleep Timer Off
Channel Guard Off (ID:0000)
Blue Back On
Child Lock Off
Auto Shutoff Off
Favorite Setting Blank
Power Lamp On
Eco Mode Off
Setting item Setting position
Auto Program TV channel automatically set
Edit/manual Preset CH only
Language English
Video-1 Setting Component
Appearance Size-1
Teletext Language Group-1
HDMI SETTING
HDMI-1/2/3 Size Auto
HDMI-1 Audio Auto
PC Setting Center

1-20 (No.YA702<Rev.005>)
3.5.4 SETTINGS OF FACTORY SHIPMENT [LT-32EX19/MAT, LT-32EX19/MBT]
3.5.4.1 BUTTON OPERATION
3.5.4.2 REMOTE CONTROL DIRECT OPERATION
3.5.4.3 REMOTE CONTROL MENU OPERATION
(1) PICTURE
(2) SOUND
(3) FEATURES
(4) SET UP
Setting item Setting position
POWER Off
CHANNEL PR01 (Area-1)
CH 02 (Area-2)
VOLUME 15
TV/AV TV
Setting item Setting position
CHANNEL PR01 (Area-1)
CH 02 (Area-2)
VOLUME 15
SUB POWER OFF
Setting item Setting position
Picture Mode Bright
White balance Cool
FEATURES
Clear SD RF Mode-1
Ohter Off
Digital VNR On
DigiPure On
Pull Down Off
Color Management On
Picture Management On
Smart Picture On
Dynamic Backlight On
MPEG Noise Reduction Off
Color System TV Depends on PR/CH
EXT Auto
Zoom Auto (Panoramic)
Setting item Setting position
STEREO / I•II (Area-1) Stereo sound
MTS (Area-2) Stereo
Sound Meister Dynamic
Treble -
Bass -
Surround -
Balance Centre
Voice Enhancer Off
Al Volume On
Setting item Setting position
On Timer 00:00 (PR01) (Area-1)
00:00 (PR02) (Area-2)
Sleep Timer Off
Channel Guard Off (ID:0000)
Blue Back On
Child Lock Off
Auto Shutoff Off
Favorite Setting Blank
Power Lamp On
Eco Mode Off
Setting item Setting position
Auto Program TV channel automatically set
Edit/manual (Area-1) Preset CH only
Channel Summary (Area-2) Preset CH only
Language English
Video-1 Setting Component
AI Volume On
Appearance Size-1
Teletext Language (Area-1) Group-1
HDMI SETTING
HDMI-1/2/3 Size Auto
HDMI-1 Audio Auto
PC Setting Center
Closed caption (Area-2) Off (Caption: CC1, Text: T1)