JVC LT32EX19 Diagram

SERVICE MANUAL

LCD COLOUR TELEVISION

YA702<Rev.005>20097SERVICE MANUAL

LT-32EX19/AT, LT-32EX19/BT, LT-32EX19/BBT, LT-32EX19 LT-32EX19 LT-32EX19 LT-32EX19

/EBT,LT-32EX19/MAT, LT-32EX19/MBT,

/NBSK

/RBCK

/VBSK

, LT-32EX19/PAT, LT-32EX19/PBT,

, LT-32EX19/SAT, LT-32EX19/SBT,

LT-32EX29/NBSK

BASIC CHASSIS

FU3

No.YA702

No.YA708

1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-28

: LT-32EX19 No.YA703: LT-32BX19 No.YA704: LT-42EX19

: LT-42Z49 No.YA709: LT-32Z49

TABLE OF CONTENTS

No.YA702<Rev.005>

2009/7

SPECIFICATION

LT-32EX19/AT, LT-32EX19/BT, LT-32EX19/BBT, LT-32EX19/EBT, LT-32EX19/NBSK, LT-32EX19/SAT, LT-32EX19/SBT, LT32EX19/VBSK, LT-32EX29/NBSK

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

Intermediate Frequency

Colour Sub Carrier

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 Ω unbalanced, coaxial

Video / Audio Input-1/2

PC (RGB) Input Video D-sub 15 pin × 1

HDMI Input Video HDMI connector × 3

Video / Audio Output Video 1V (p-p), Positive (Negative sync provided), 75 Ω, RCA pin jack × 1

Headphone 3.5 mm stereo mini jack × 1 Remote Control Unit RM-C2020 (AAA/R6 dry cell battery × 2)

Component Video

625p / 525p / 625i / 525i

VHF Low

VHF High

SECAM

750p / 1125i

46.25 MHz - 140.25 MHz

147.25 MHz - 423.25 MHz

UHF

431.25 MHz - 863.25 MHz

CATV

Mid (X - Z+2, S1 - S10) / Super (S11 - S20) / Hyper (S21 - S41) bands

VIF

38.9 MHz (B, G, I, D, K, M)

SIF

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)

PAL

4.43 MHz

4.40625 MHz / 4.25 MHz

NTSC

3.58 MHz / 4.43 MHz

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

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

(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]

Audio 500mV (rms), Low impedance, RCA pin jack × 2

Design & specifications are subject to change without notice.

1-2 (No.YA702<Rev.005>)

LT-32EX19/MAT, LT-32EX19/MBT

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

Intermediate Frequency

Colour Sub Carrier

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 Ω unbalanced, coaxial

Video / Audio Input-1/2

PC (RGB) Input Video D-sub 15 pin × 1

HDMI Input Video HDMI connector × 3

Video / Audio Output Video 1V (p-p), Positive (Negative sync provided), 75 Ω, RCA pin jack × 1

Headphone 3.5 mm stereo mini jack × 1 Remote Control Unit RM-C2020 (AAA/R6 dry cell battery × 2)

Component Video

625p / 525p / 625i / 525i

VHF Low

VHF High

SECAM

750p / 1125i

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)

UHF

431.25 MHz - 863.25 MHz (Area-1) / 367.25MHz - 801.25MHz (Area-2)

CATV

Mid (X - Z+2, S1 - S10) / Super (S11 - S20) / Hyper (S21 - S41) bands

VIF

38.9 MHz (B, G, I, D, K, M)

SIF

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)

PAL

4.43 MHz

4.40625 MHz / 4.25 MHz

NTSC

3.58 MHz / 4.43 MHz

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

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

(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]

Audio 500mV (rms), Low impedance, RCA pin jack × 2

Design & specifications are subject to change without notice.

(No.YA702<Rev.005>)1-3

LT-32EX19/PAT, LT-32EX19/PBT

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

Intermediate Frequency

Colour Sub Carrier

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 Ω unbalanced, coaxial

Video / Audio Input-1/2

PC (RGB) Input Video D-sub 15 pin × 1

HDMI Input Video HDMI connector × 3

Video / Audio Output Video 1V (p-p), Positive (Negative sync provided), 75 Ω, RCA pin jack × 1

Headphone 3.5 mm stereo mini jack × 1 Remote Control Unit RM-C2020 (AAA/R6 dry cell battery × 2)

Component Video

625p / 525p / 625i / 525i

VHF Low

VHF High

SECAM

750p / 1125i

55.25MHz - 127.25MHz

133.25MHz - 361.25MHz

UHF

367.25MHz - 801.25MHz

CATV

Mid (X - Z+2, S1 - S10) / Super (S11 - S20) / Hyper (S21 - S41) bands

VIF

45.75 MHz

SIF

33.5 MHz (4.5 MHz)

PAL

4.43 MHz

4.40625 MHz / 4.25 MHz

NTSC

3.58 MHz / 4.43 MHz

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

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

(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]

Audio 500mV (rms), Low impedance, RCA pin jack × 2

Design & specifications are subject to change without notice.

1-4 (No.YA702<Rev.005>)

LT-32EX19/RBCK

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

Intermediate Frequency

Colour Sub Carrier

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 Ω unbalanced, coaxial

Video / Audio Input-1/2

PC (RGB) Input Video D-sub 15 pin × 1

HDMI Input Video HDMI connector × 3

Video / Audio Output Video 1V (p-p), Positive (Negative sync provided), 75 Ω, RCA pin jack × 1

Headphone 3.5 mm stereo mini jack × 1 Remote Control Unit RM-C2020 (AAA/R6 dry cell battery × 2)

Design & specifications are subject to change without notice.

Component Video

625p / 525p / 625i / 525i

VHF Low

VHF High

SECAM

750p / 1125i

46.25 MHz - 140.25 MHz

147.25 MHz - 423.25 MHz

UHF

431.25 MHz - 863.25 MHz

CATV

Mid (X - Z+2, S1 - S10) / Super (S11 - S20) / Hyper (S21 - S41) bands

VIF

38.0 MHz

SIF

33.5 MHz (4.5 MHz)

PAL

4.43 MHz

4.40625 MHz / 4.25 MHz

NTSC

3.58 MHz / 4.43 MHz

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

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

(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]

Audio 500mV (rms), Low impedance, RCA pin jack × 2

(No.YA702<Rev.005>)1-5

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 1000Ω per 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)

1-6 (No.YA702<Rev.005>)

0.15 F AC-TYPE

GOOD EARTH GROUND

1500 10W

PLACE THIS PROBE ON EACH EXPOSED ME TAL PAR T

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.

VENTILATION HOLE

*Diagram differs from actual appearance.

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.

150 mm

200 mm

POWER

150 mm

200 mm

50 mm

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.

*Diagram differs from actual appearance.

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.

It fixes in a band.

TV STAND

*Diagram differs from actual appearance.

(No.YA702<Rev.005>)1-7

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)

SERVICE MODE SCREEN

SERVICE MENU Ver.xxx

1. ADJUST

2. SELF CHECK

3. I2C STOP

Press [2] key

SELF CHECK MODE SCREEN

The operating time is displayed.

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

The total operating time is displayed.

[Can not reset.]

*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.

MAX is displayed when the maximum count time is exceeded.

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.

1-8 (No.YA702<Rev.005>)

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.

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)

OSD Language Eng, Chi, Rus, Ara,

Fre, Thai, Viet, Ukr, Spa, Mal

Stereo System A2/NICAM A2/NICAM A2/NICAM A2/NICAM (Area-1)

Teletext TELETEXT TELETEXT TELETEXT TELETEXT (Area-1)

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

Eng, Chi, Rus, Ara, Fre, Thai, Viet, Ukr, Spa, Mal

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.

Round pin type Round pin type Round pin type

Eng, Chi, Rus, Ara, Fre, Thai, Viet, Ukr, Spa, Mal

Eng, Chi, Spa, Por, Rus

MTS (Area-2)

CLOSED CAPTION (Area-2)

Eng, Chi, Rus, Ara, Fre, Thai, Viet, Ukr, Spa, Mal

A2/NICAM

TELETEXT

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

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

Eng, Chi, Spa, Por, Rus

Eng, Chi, Rus, Ara, Fre, Thai, Viet, Ukr, Spa, Mal

(No.YA702<Rev.005>)1-9

Eng, Chi, Rus, Ara, Fre, Thai, Viet, Ukr, Spa, Mal

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

2.3 HOW TO IDENTIFY MODELS

Distinguish name is added at the bottom of the rating label.

MODEL No.

LT-32EX19

LT-32EX19AT

LT-32EX19SAT

LT-32EX19BT

LT-32EX19SBT

LT-32EX19

LT-32EX19PAT

LT-32EX19PBT

LT-32EX19BBT

LT-32EX29

LT-32EX19

LT-32EX19MAT

LT-32EX19MBT

32EX19-NBSK

32EX19-RBCK

LT-32EX19EBT

1-10 (No.YA702<Rev.005>)

32EX29-VBSK

32EX29-NBSK

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.

Item

QLD0566-001 QLD0620-001

Specifications

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/m

500cd/m

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)

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.

(No.YA702<Rev.005>)1-11

2.4.2 MAIN CPU PIN FUNCTION [IC7001

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

27 GPIO14/CSIO0_RXD/

UART0_RXD/MSD

28 GPIO15/CSIO0_SCLK/

MST

29 GPIO16/CSIO0_RTS/

UART0_RTS/MSN

30 GPIO17/CSIO0_CTS/

UART0_CTS

31 GPIO20/CSIO1_TXD/

UART1_TXED

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

38 GPIO22/CSIO1_SCLK/

SODIF

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

O Reset for HDMI-2 [Reset=L]

O Power LED(blue lighting [ON=H]

- Not used

O Power on/off control main power [ON=L]

O Power on/off control PFC [ON=L]

Power on/off control for low bias line [ON= L]

O Reset for HDMI-1 [Reset=L]

: DIGITAL PWB]

Pin Pin name I/O Function

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

1-12 (No.YA702<Rev.005>)

Pin Pin name I/O Function

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

125 GOIO24/CSIO1_CTS/

UART1_CTS/ UART3_RXD

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

135 GPIO01/MFT1A/MFT0B/

PWD1

136 GPIO02/MFT2A/MFT7B/

UART2_TXD

137 GPIO03/MFT3A/MFT2B/

UART2_RXD

138 GPIO04/MFT4A/MFT3B/

CSIO2_TXD

139 GPIO05/MFT5A/MFT4B/

CSIO2_RXD

140 GPIO06/MFT6A/MFT5B/

CSIO2_SCLK

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

154 ADIN3/INPUT03 I Key scan for side control (Input/Vol+/Vol-)

155 ADIN2/INPUT02/INT2 I Key scan for side control (Power/ CH+/

156 ADIN1/INPUT01/INT1 - Not used

157 ADIN0/INPUT00/INT0 I Power abnormality detection [Emer-

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

- Not used

O DC dimming control for back-light inverter

PWM dimming control for back-light inverter

Power on/off control for back-light [60Hz=H]

I Headphone detect [Detect=H]

O Power on/off control for LCD [ON=L]

I Remote control sensor input

O Rest for HDMI-3

I AFT voltage for VHF/UHF tuner

CH-/Menu)

gent=H]

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

(No.YA702<Rev.005>)1-13

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.

3.2.8 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.

3.2.4 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.

3.2.11 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.

1-14 (No.YA702<Rev.005>)

POWER CORD

POWER CORD COVER

REAR COVER

POWER PWB

CHOKE COIL [LT-32EX19/NBSK] [LT-32EX29/NBSK]

TERMINAL

BASE

LCD PANEL UNIT

ANALOG PWB

DIGITAL PWB

MAIN BASE

STAND

BOTTOM FRAME

SW PWB

TOP FRAME

CONTROL KNOB

LCD SUPPORT BRACKET

LED PWB

REMOTE PWB

SPEAKER

FRONT

SPEAKER

Fig.3-1

(No.YA702<Rev.005>)1-15

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].

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.

(2) Remove the CONTROL PWB COVER. (3) Remove the CONTROL PWB.

FRONT

LCD PANEL UNIT

LCD CONTROL PWB

INVERTER PWB

Fig.3-2

1-16 (No.YA702<Rev.005>)

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.

CONTROL PWB

LCD CONTROL PWB

COVER

INVERTER PWB COVER

LCD PANEL UNIT

INVERTER PWB

PANEL FRAME

LCD PANEL

BACK LIGHT UNIT

Fig.3-3

(No.YA702<Rev.005>)1-17

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

Symbol Number of pins Mounting PWB Main content of data

IC7002

IC7003

8-pin DIGITAL PWB Setting value of IC7001 (MAIN CPU) is memorized.

8-pin DIGITAL PWB Programming data of IC7001 (MAIN CPU) is memorized.

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.

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

SERVICE MODE SCREEN

SERVICE MENU Ver.xxx

1. ADJUST

2. SELF CHECK

3. I2C STOP

ADJUST MODE SCREEN

S001 R DRIVE MID 128 PAL FULL STD M

Press [8] key

SYSTEM CONSTANT SCREEN

Press [1] key

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

Fig.3-4

* Input PAL White Raster signal 75% ( Y = 525 mV and SYNC

= 0.3 V ) at VDO 2 for adjustment.

1-18 (No.YA702<Rev.005>)

SYSTEM CONSTANT SETTING

Setting value

Setting item

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

3.5.3 SETTINGS OF FACTORY SHIPMENT [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]

3.5.3.1 BUTTON OPERATION

Setting item Setting position

Power Off

Channel PR1

Volume 15

TV/AV TV

3.5.3.2 REMOTE CONTROL DIRECT OPERATION

Setting item Setting position

Channel PR1

Volume 15

Sub Power Off

3.5.3.3 REMOTE CONTROL MENU OPERATION

(1) PICTURE

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

Zoom Auto (Panoramic)

Other models

EXT Auto

LT-32EX19/MAT LT-32EX19/MBT

LT-32EX19/PAT LT-32EX19/PBT

(2) SOUND

Setting item Setting position

STEREO / I•II Stereo sound

Sound Meister Dynamic

Treble -

Bass -

Surround -

Balance Centre

Voice Enhancer Off

Al Volume On

(3) FEATURES

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

(4) SET UP

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

LT-32EX19/SAT LT-32EX19/SBT

LT-32EX19/RBCK

(No.YA702<Rev.005>)1-19

3.5.4 SETTINGS OF FACTORY SHIPMENT [LT-32EX19/MAT, LT-32EX19/MBT]

3.5.4.1 BUTTON OPERATION

Setting item Setting position

POWER Off

CHANNEL PR01 (Area-1)

CH 02 (Area-2)

VOLUME 15

TV/AV TV

3.5.4.2 REMOTE CONTROL DIRECT OPERATION

Setting item Setting position

CHANNEL PR01 (Area-1)

CH 02 (Area-2)

VOLUME 15

SUB POWER OFF

3.5.4.3 REMOTE CONTROL MENU OPERATION

(1) PICTURE

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)

(2) SOUND

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

(3) FEATURES

Setting item Setting position

On Timer 00:00 (PR01) (Area-1)

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

(4) SET UP

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)

00:00 (PR02) (Area-2)

1-20 (No.YA702<Rev.005>)

3.5.5 SETTINGS OF FACTORY SHIPMENT [LT-32EX19/PAT, LT-32EX19/PBT, LT-32EX19/RBCK]

3.5.5.1 BUTTON OPERATION

Setting item Setting position

POWER Off

CHANNEL CH 02

VOLUME 15

TV/AV TV

3.5.5.2 REMOTE CONTROL DIRECT OPERATION

Setting item Setting position

CHANNEL CH 02

VOLUME 15

SUB POWER OFF

3.5.5.3 REMOTE CONTROL MENU OPERATION

(1) PICTURE

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)

(2) SOUND

Setting item Setting position

MTS Stereo

Sound Meister Dynamic

Treble -

Bass -

Surround -

Balance Centre

Voice Enhancer Off

Al Volume On

(3) FEATURES

Setting item Setting position

On Timer 00:00 (PR02)

Sleep Timer Off

Channel Guard Off (ID:0000)

Blue Back On

Child Lock Off

Favorite Setting Blank

Power Lamp On

Eco Mode Off

(4) SET UP

Setting item Setting position

Auto Program TV channel automatically set

Channel Summary Preset CH only

Language English

Video-1 Setting Component

AI Volume On

Appearance Size-1

HDMI SETTING

HDMI-1/2/3 Size Auto

HDMI-1 Audio Auto

PC Setting Center

Closed caption Off (Caption: CC1, Text: T1)

(No.YA702<Rev.005>)1-21

3.5.6 VSM PRESET SETTING VALUES [LT-32EX19/AT, LT-32EX19/MAT, LT-32EX19/PAT, LT-32EX19/SAT]

Soft Bright Standard Game Mode White MID COOL WARM

Back Light 16 32 24 16

Contrast 16 18 16 16

Bright 16 16 16 16

Sharp 16201616

Colour 16 16 16 16

Tint 16 16 16 16

3.5.7 VSM PRESET SETTING VALUES [LT-32EX19/BT, LT-32EX19/BBT, LT-32EX19/EBT, LT-32EX19/NBSK, LT-32EX19/ MBT, LT-32EX19/PBT, LT-32EX19/RBCK, LT-32EX19/SBT, LT-32EX19/VBSK, LT-32EX29/NBSK]

Soft Bright Standard Game Mode White MID COOL WARM

Back Light 16 32 24 16

Contrast 16 18 16 16

Bright 16 16 16 16

Sharp 16201616

Colour 16 16 16 16

Tint 16 16 16 16

R*-15000

G*-35-32

B*00-140

R*-15700

G*-33-20

B*00-120

1-22 (No.YA702<Rev.005>)

3.6 REPLACEMENT OF CHIP COMPONENT

3.6.1 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.

3.6.2 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.

3.6.3 REPLACEMENT STEPS

1. How to remove Chip parts

2. How to install 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.

SOLDER

[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 A as indicated in the figure.

(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.

(4) Then solder leads B and C.

(No.YA702<Rev.005>)1-23

SECTION 4

ADJUSTMENT

4.1 ADJUSTMENT PREPARATION

(1) This TV is adjusted by using REMOTE CONTROL UNIT. (2) The adjustment using the REMOTE CONTROL UNIT is made on the basic 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)[PAL]

• Remote control unit

4.4 BASIC OPERATION OF SERVICE MODE

4.4.1 HOW TO ENTER THE SERVICE MODE

(1) Press [DISPLAY] key and [MUTING] key on the remote

control unit simultaneously to enter the SERVICE MODE SCREEN.

4.4.2 HOW TO EXIT THE SERVICE MODE

Press the [MENU] key to exit the Service mode.

SERVICE MODE SCREEN

SERVICE MENU Ver.XXX

1. ADJUST

2. SELF CHECK

3. I2C STOP

Refer to SECTION5

NOT USED

Setting item Settings position

Picture Mode Standard

PICTURE adjustments Centre

White Balance Mid

4.4.4 SERVICE MODE SELECT KEY LOCATION

MUTING

FUNCTION

4.4.3 CHANGE AND MEMORY OF SETTING VALUE

SELECTION OF SETTING ITEM

• [[FUNCTION /] key.

For scrolling up / down the setting items.

CHANGE OF SETTING VALUE (DATA)

• [[FUNCTION /] key.

For scrolling up / down the setting values.

MEMORY OF SETTING VALUE (DATA)

The setting value will be stored automatically when release the REMOTE CONTROL UNIT keys.

1-24 (No.YA702<Rev.005>)

DISPLAY

FUNCTION

4.4.5 ADJUSTMENT MODE

This mode is used to adjust the VIDEO CIRCUIT.

4.4.5.1 HOW TO ENTER THE ADJUSTMENT MODE

When the SERVICE MENU SCREEN of SERVICE MODE is displayed, press [1] key to enter the ADJUSTMENT MODE.

NOTE:

• When a number key other than the [1] key is pressed in the SERVICE MODE SCREEN, the other relevant screen may be displayed. This is not used in the adjustment procedure. Press the

[MENU] key to return to the SERVICE MODE SCREEN.

4.4.5.2 DESCRIPTION OF STATUS DISPLAY

SERVICE MODE SCREEN

PCVGA : PC VGA/60 PCXGA : PC XGA/60 PCSXGA : SXGA/60 PCSVGA : PC SVGA/60 PCWXGA : WideXGA(1360)/60 H525I : HDMI 525i H525P : HDMI 525p H625I : HDMI 625i H625P : HDMI 625p H750P5 : HDMI 750p 50Hz H750P6 : HDMI 750p 60Hz H125I5 : HDMI 1125i 50Hz H125I6 : HDMI 1125i 60Hz H125P5 : HDMI 1125P 50Hz H125P6 : HDMI 1125P 60Hz H125P2 : HDMI 1125P 24Hz HXGA : HDMI XGA

ADJUST MODE SCREEN

(5)SETTING ITEM No.

S001 R DRIVE MID 128 NTSC3 FULL STD M

(1)SIGNAL SYSTEM

SERVICE MENU Ver.XXX

1. ADJUST

2. SELF CHECK

3. I2C STOP

Press [1] key

(6)SETTING ITEM

(2)ZOOM MODE

(3)PICTURE MODE

(7)

SETTING VALUE (DATA)

(4)WHITE BALANCE

(2) ZOOM MODE

State of the ZOOM MODE is displayed.

FUL : Full PANO : Panoramic 1609 : 16 : 9 Zoom REGU : Regular 14Z : 14 : 9 Zoom TEXT : TEXT SLIM : Slim SUBT : 16:9 Zoom Subtitle PANZ : Panoramic Zoom FULN : Full Native

(3) PICTURE MODE

State of the PICTURE MODE is displayed.

STD : Standard BRI : Bright SOFT : Soft GAME : Game mode

(4) WHITE BALANCE MODE

State of the WHITE BALANCE MODE is displayed.

H: Cool M: Mid L: Warm

(1) SIGNAL SYSTEM

The signal displayed on the screen is displayed.

PAL50 : PAL50Hz PAL60 : PAL60Hz SECAM : SECAM NTSC3 : NTSC3.58 NTSC4 : NTSC4.43 525I : 525i 525P : 525p 625I : 625i 625P : 625p 750P5 : 750p 50Hz 750P6 : 750p 60Hz 1125I5 : 1125i 50Hz 1125I6 : 1125i 60Hz 1125P5 : 1125P 50Hz 1125P6 : 1125P 60Hz

--- : Others HXGA : HDMI XGA

(5) SETTING ITEM No.

State of the Setting Item No. are displayed.

(6) SETTING ITEM NAME

Setting item name are displayed.

(7) SETTING VALUE (DATA)

The SETTING VALUE is displayed.

(No.YA702<Rev.005>)1-25

4.4.6 VSM PRESET MODE

This mode is used to adjust the VSM.

4.4.6.1 HOW TO ENTER THE VSM PRESET MODE

When the SERVICE MENU SCREEN of SERVICE MODE is displayed, press [6] key to enter the VSM PRESET MODE.

4.4.6.2 DESCRIPTION OF STATUS DISPLAY

SERVICE MODE SCREEN

SERVICE MENU Ver.XXX

1. ADJUST

2. SELF CHECK

3. I2C STOP

Press [6] key

VSM PRESET MODE SCREEN

VSM PRESET

Back Light Soft XX Contrast Soft XX Bright Soft XX Sharp Soft XX Colour Soft XX Tint Soft XX Back Light Bright XX Contrast Bright XX Bright Bright XX Sharp Bright XX Colour Bright XX Tint Bright XX Back Light Standard XX Contrast Standard XX Bright Standard XX Sharp Standard XX Colour Standard XX Tint Standard XX Back Light Game mode XX Contrast Game mode XX Bright Game mode XX Sharp Game mode XX Colour Game mode XX Tint Game mode XX

(1) SETTING ITEM NAME

Setting item name are displayed.

(2) PICTURE MODE

The picture mode name are dispalayed.

(3) SETTING VALUE (DATA)

The setting values are displayed. The setting value to be displayed are listed below.

Soft Bright Standard

Game mode

Back Light 16 32 24 16

Contrast 16 18 16 16

Bright 16 16 16 16

Sharp 16201616

Colour 16 16 16 16

Tint 16 16 16 16

(1)SETTING ITEM

(2)PICTURE MODE

(3)

SETTING VALUE (DATA)

4.5 INITIAL SETTING VALUES IN THE SERVICE MODE

• Perform fine-tuning based on the "initial values" using the remote control when in the Service mode.

• The "initial values" serve only as an indication rough standard and therefore the values with which optimal display can be achieved may be different from the default values.

• <S004> to <S009> are the off set values.

4.5.1 ADJUSTMENT MODE [LT-32EX19/AT, LT-32EX19/

MAT, LT-32EX19/PAT, LT-32EX19/SAT]

Item No. Item name Variable range Setting value

S001 R DRIVE MID 0000 - 0255 ∗ S002 G DRIVE MID 0000 - 0255 ∗ S003 B DRIVE MID 0000 - 0255 ∗

S004 R DRIVE COOL 0000 - 0255 -150

S005 G DRIVE COOL 0000 - 0255 -35

S006 B DRIVE COOL 0000 - 0255 00

S007 R DRIVE WARM 0000 - 0255 00

S008 G DRIVE WARM 0000 - 0255 -32

S009 B DRIVE WARM 0000 - 0255 -140

4.5.2 ADJUSTMENT MODE [LT-32EX19/BT, LT-32EX19/ BBT, LT-32EX19/EBT, LT-32EX19/NBSK, LT-32EX19/ MBT, LT-32EX19/PBT, LT-32EX19/RBCK, LT-32EX19/ SBT, LT-32EX19/VBSK, LT-32EX29/NBSK]

Item No. Item name Variable range Setting value

S001 R DRIVE MID 0000 - 0255 ∗ S002 G DRIVE MID 0000 - 0255 ∗ S003 B DRIVE MID 0000 - 0255 ∗

S004 R DRIVE COOL 0000 - 0255 -157

S005 G DRIVE COOL 0000 - 0255 -33

S006 B DRIVE COOL 0000 - 0255 00

S007 R DRIVE WARM 0000 - 0255 00

S008 G DRIVE WARM 0000 - 0255 -20

Note: " ∗ " Adjustable range is -256 ~ 00 only and one colour(R

or G or B) should be "00"

S009 B DRIVE WARM 0000 - 0255 -120

Note: " ∗ " Adjustable range is -256 ~ 00 only and one colour(R

or G or B) should be "00"

1-26 (No.YA702<Rev.005>)

4.6 ADJUSTMENT PROCEDURE

4.6.1 VIDEO CIRCUIT

Item

WHITE BALANCE (HIGH LIGHT)

VSM PRESET Remote

Measuring

instrument

Remote control unit

Signal generator

control unit

Adjustment part Description

[1.ADJUST] S001: R DRIVE MID S002: G DRIVE MID S003: B DRIVE MID

[VSM PRESET] Back Light Contrast Bright Sharp Colour Tint

(1) Receive a PAL 75% all white signal. (2) Set PICTURE MODE to "STANDARD". (3) Set ZOOM to "FULL". (4) Set WHITE BALANCE. to "MID". (5) Select "1.ADJUST" from the SERVICE MODE. (6) Adjustment is select item from <S001>(R DRIVE

MID), <S002>(G DRIVE MID), <S003>(B DRIVE MID).

(7) Select <S001> item fix to 128 Other color

<S002>, <S003> should be less than 128.

NOTE:

Adjusttable range is 0000-0128 only (Don't over "0128").

(8) Must check white balance adjustment correctry

with low light to high light.

(1) Select "VSM PRESET" from the SERVICE

MODE.

(2) Set the initilal setting value of <Back Light> -

<Tint>.

(No.YA702<Rev.005>)1-27

SECTION 5

TROUBLESHOOTING

5.1 SELF CHECK FEATURE

5.1.1 OUTLINE

This unit comes with the "Self check" feature, which checks the operational state of the circuit and displays/saves it during failure.Diagnosis is performed when power is turned on, and information input to the main microcomputer is monitored at all time.Diagnosis is displayed in 2 ways via screen display and LED flashes. Failure detection is based on input state of I the various control lines connected to the main microcomputer.

5.1.2 HOW TO ENTER THE SELF CHECK MODE

(1) Press the [DISPLAY] key and [MUTING] key

simultaneously, then enter the SERVICE MODE.

(2) Press the [2] key then enter the SELF CHECK MODE.

NOTE:

When a number key other than the [2] key is pressed in the SERVICE MODE screen, the other relevant screen may be displayed. This is not used in the SELF CHECK MODE. Press the

[MENU] key to return to the MAIN MENU SCREEN.

5.1.3 HOW TO EXIT THE SELF CHECK MODE To Save Failure History:

Turn off the power by unplugging the AC power cord plug when in the Self check display mode.

To Clear (Reset) Failure History:

Turn off the power by pressing the [POWER] key on the remote control unit when in the Self check display mode.

5.1.4 FAILURE HISTORY

Failure history can be counted up to 9 times for each item. When the number exceeds 9, display will remain as 9. Failure history will be stored in the memory unless it has been deleted.

NOTE:

Only SYNC (with/without sync signals) will be neither counted nor stored.

C bus and

SERVICE MODE SCREEN

Diagnosis OK:Normal NG:Abnormal

SELF CHECK MODE SCREEN

SERVICE MENU Ver.xxx

1. ADJUST

2. SELF CHECK

3. I2C STOP

NOT USED

Press [2] key

Failure history

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

Refer to SECTION1

Fig.5-1

5.1.5 POINTS TO NOTE WHEN USING THE SELF CHECK FEATURE

In addition to circuit failures (abnormal operation), the following cases may also be diagnosed as "Abnormal" and counted.

(1) Temporary defective transmissions across circuits due to

pulse interruptions.

(2) Misalignment in the on/off timing of power for I

C bus (Vcc)

when turning on/off the main power. Therefore, turn on the main power, and then wait for about 3 seconds before starting Self check. If recurrences are expected, ensure to clear (reset) the failure history and record the new diagnosis results.

1-28 (No.YA702<Rev.005>)

5.1.6 DETAILS

Self check is performed for the following items:

Item OSD Content Condition to detect

LOB protect LOB LOB protect detected Start to detect 3sec after LOB is turned on.

Power off if it is being NG for 200ms. Count is 0-9

EEPROM MEMORY MEN Total count of I

C error of EEPROM Start to detect 3sec after LOB is turned on.

Count NG of acquisition I

C or NACK.

Count is 0-9

Sound Meister MEI Total count of I

C error of Eala IC. Start to detect 3sec after LOB is turned on.

Count NG of acquisition I

C or NACK.

Count is 0-9

RF Tuner TUN Total count of I

C error of RF Tuner Start to detect 3sec after LOB is turned on.

Count NG of acquisition I

C or NACK.

Count is 0-9

HDMI HDM Total count of I

C error of HDMI Start to detect 3sec after LOB is turned on.

Count NG of acquisition I

C or NACK.

Count is 0-9

Synchronous SYN Whether there is Synchronous signal or not? It displays it to the input selecte signal.

The display is OK or NG.

Lamp using time TIME Display of panel drive time When LOB is turned It will be displayed in every

one hour. (Refer to Secton 1)

Clear motion drive CMD - Not used.

AV SW AV SW Total count of I

C error of AV SW Start to detect 3sec after LOB is turned on.

Count NG of acquisition I

C or NACK.

Count is 0-9

HDMI SW HDMI SW Total count of I

C error of HDMI SW Start to detect 3sec after LOB is turned on.

Count NG of acquisition I

C or NACK.

Count is 0-9

5.1.7 METHOD OF DISPLAY WHEN A RASTER IS NOT OUTPUT

In the state where a raster is not output by breakdown of the set, an error is displayed by blink of the POWER LED.

Type of error POWER LED flash cycle

Low bias line short protection Power LED turnig on and off at 1 second intervals.

< Explanation of operation >

If error is detected, the power is turned off. Shortly after the power is turned off, POWER LED will be blinked. When the protection of low bias line short operates, the power cannot be turned on until the power cord takes out and inserts, after the power is turned off.

(No.YA702<Rev.005>)1-29

Victor Company of Japan, Limited

Display Division 12, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama-city, Kanagawa-prefecture, 221-8528, Japan

(No.YA702<Rev.005>)

Printed in Japan

VSE

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JVC LT32EX19 Diagram

Specifications and Main Features

Frequently Asked Questions

User Manual