SHARP LC20S5U Service Manual

LC-20S5U

S26R7LC20S5U/

LCD COLOR TELEVISION

MODEL

In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified should be used.

LC-20S5U

CONTENTS

Page

» IMPORTANT SERVICE SAFETY PRECAUTION .........................................................................................2

» SPECIFICATIONS ........................................................................................................................................ 5

» OPERATION MANUAL .................................................................................................................................6

» DIMENSIONS ...............................................................................................................................................8

» REMOVING OF MAJOR PARTS .................................................................................................................. 9

» ADJUSTING PROCEDURE OF EACH SECTION .....................................................................................13

» PUBLIC MODE SETTING PROCEDURE ..................................................................................................25

» TROUBLE SHOOTING TABLE .................................................................................................................. 30

» MAJOR IC INFORMATIONS ......................................................................................................................34

» BLOCK DIAGRAM ......................................................................................................................................36

» OVERALL WIRING DIAGRAM ...................................................................................................................38

» DESCRIPTION OF SCHEMATIC DIAGRAM .............................................................................................40

» SCHEMATIC DIAGRAM

ËINVERTER Unit ....................................................................................................................................... 41

ËMAIN Unit .................................................................................................................................................42

ËSUB Unit ..................................................................................................................................................58

ËR/C, LED Unit ..........................................................................................................................................70

» PRINTED WIRING BOARD ASSEMBLIES ................................................................................................ 71

» REPLACEMENT PARTS LIST....................................................................................................................86

» PACKING OF THE SET ..............................................................................................................................99

This document has been published to be used for after sales service only. The contents are subject to change without notice.

LC-20S5U

IMPORTANT SERVICE SAFETY PRECAUTION

Service work should be performed only by qualified service technicians who are thoroughly familiar with all safety checks and the servicing guidelines which follow:

WARNING

1. For continued safety, no modification of any circuit should be attempted.

2. Disconnect AC power before servicing.

CAUTION: FOR CONTINUED PROTECTION AGAINST A RISK OF FIRE REPLACE ONLY WITH SAME TYPE F6700 (1A, AC250V), F6701

A V

(1A, AC250V), F6702 (1A, AC250V) , F6703 (1A, AC250V), F6704 (1A, AC250V), F7701 (3.15A, 250V) AND F7702 (5A, 250V) FUSE.

BEFORE RETURNING THE RECEIVER (Fire & Shock Hazard)

Before returning the receiver to the user, perform the following safety checks:

1. Inspect all lead dress to make certain that leads are not pinched, and check that hardware is not lodged between the chassis and other metal parts in the receiver.

2. Inspect all protective devices such as non-metallic control knobs, insulation materials, cabinet backs, adjustment and compartment covers or shields, isolation resistor-capacitor networks, mechanical insulators, etc.

3. To be sure that no shock hazard exists, check for leakage current in the following manner.

• Plug the AC cord directly into a 110~240 volt AC outlet, and connect the DC power cable into the receiver's DC jack. (Do not use an isolation transformer for this test).

• Using two clip leads, connect a 1.5k ohm, 10 watt resistor paralleled by a 0.15µF capacitor in series with all exposed metal cabinet parts and a known earth ground, such as electrical conduit or electrical ground connected to an earth ground.

• Use an AC voltmeter having with 5000 ohm per volt, or higher, sensitivity or measure the AC voltage drop across the resistor.

• Connect the resistor connection to all exposed metal parts having a return to the chassis (antenna, metal cabinet, screw heads, knobs and control shafts, escutcheon, etc.) and measure the AC voltage drop across the resistor. All checks must be repeated with the AC cord plug connection reversed. (If necessary, a nonpolarized adaptor plug must be used only for the purpose of completing these checks.) Any reading of 0.75V peak (this corresponds to 0.5 mA. peak AC.) or more is excessive and indicates a potential shock hazard which must be corrected before returning the monitor to the owner.

DVM

AC SCALE

1.5k ohm 10W

0.15 µF

TEST PROBE

TO EXPOSED METAL PARTS

CONNECT TO KNOWN EARTH GROUND

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SAFETY NOTICE

Many electrical and mechanical parts in LCD television have special safety-related characteristics. These characteristics are often not evident from visual inspection, nor can protection afforded by them be necessarily increased by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in this manual; electrical

and shaded areas in the

Schematic Diagrams

For continued protection, replacement parts must be identical to those used in the original circuit. The use of substitute replacement parts which do not have the same safety characteristics as the factory recommended replacement parts shown in this service manual, may create shock, fire or other hazards.

components having such features are identified by " å"

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Replacement Parts Lists

and

LC-20S5U

PRECAUTIONS A PRENDRE LORS DE LA REPARATION

La réparation ne peut être effectuée que par un technicien spécialisé qui s'est parfaitement accoutumé à toute vérification de sécurité et aux conseils suivants.

AVERTISSEMENT

exposées du coffret et une terre connue comme une conduite électrique ou une prise de terre branchée à la

1. Pour la sécurité continue, n'entreprendre aucune modification de tout circuit.

2. Débrancher l'alimentation CA avant la réparation.

PRECAUTION: POUR LA PROTECTION CONTINUE CONTRE LES RISQUES D'INCENDIE, REMPLACER LE FUSIBLE PAR UN FUSIBLE DE

A V

MEME TYPE F6700 (1A, AC250V), F6701 (1A, AC250V), F6702 (1A, AC250V) , F6703 (1A, AC250V), F6704 (1A, AC250V), F7701 (3.15A, 250V) et F7702 (5A, 250V).

AVANT DE RENDRE LE RECEPTEUR A L’UTILISATEUR (Incendie et choc électrique)

Avant de rendre le récepteur à l'utilisateur, effectuer

terre.

• Utiliser un voltmètre CA d'une sensibilité d'au moins 5000Ω/V pour mesurer la chute de tension CA en travers de la résistance.

• Toucher avec la sonde d'essai les pièces métalliques exposées qui présentent une voie de retour au châssis (antenne, coffret métallique, tête des vis, arbres de commande et des boutons, écusson, etc.) et mesurer la chute de tension CA en travers de la résistance. Toutes les vérifications doivent être refaites après avoir inversé la fiche du cordon d'alimentation. (Si nécessaire, une prise d'adpatation non polarisée doit être utilisée dans le but de terminer ces vérifications.) La tension de pointe mesurèe ne doit pas dépasser

0.75V (correspondante au courant CA de pointe de

0.5mA). Dans le cas contraire, il y a une possibilité de choc électrique qui doit être supprimée avant de rendre le récepteur au client.

les vérifications suivantes.

1. Inspecter tous les faisceaux de câbles pour s'assurer que les fils ne soient pas pincés ou qu'un outil ne soit pas placé entre le châssis et les autres pièces métalliques du récepteur.

2. Inspecter tous les dispositifs de protection comme les boutons de commande non-métalliques, les isolants,

DVM

ECHELLE CA

1.5k ohm 10W

le dos du coffret, les couvercles ou blindages de réglage et de compartiment, les réseaux de résistance-capacité, les isolateurs mécaniques, etc.

3. S'assurer qu'il n'y ait pas de danger d'électrocution en vérifiant la fuite de courant, de la facon suivante:

0.15 µF

SONDE D'ESSAI

• Brancher le cordon d'alimentation directem-ent à une prise de courant de 110-240V. (Ne pas utiliser de transformateur d'isolation pour cet essai).

• A l'aide de deux fils à pinces, brancher une résistance de 1.5kΩ 10 watts en parallèle avec un condensateur de 0.15µF en série avec toutes les pièces métalliques

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AUX PIECES METALLIQUES EXPOSEES

BRANCHER A UNE TERRE CONNUE

AVIS POUR LA SECURITE

De nombreuses pièces, électriques et mécaniques, dans les téléviseurs de l'afficharge à cristaux liquides présentent des caractéristiques spéciales relatives à la sécurité. Ces caracténstiques ne sont souvent pas évidentes à vue. Le degré de protection ne peut pas être nécessairement augmentée en utilisant des pièces de remplacement étalonnées pour haute tension, puissance, etc. Les pièces de remplacement qui présentent ces caractéristiques sont identifiées dans ce manuel; les

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pièces électriques qui présentent ces particularités sont identifiées par la marque " å " et hachurées dans la

des pièces de remplacement schématiques

et les

diagrammes

Pour assurer la protection, ces pièces doivent être identiques à celles utilisées dans le circuit d'origine. L'utilisation de pièces qui n'ont pas les mêmes caractéristiques que les pièces recommandées par l'usine, indiquées dans ce manuel, peut provoquer des électrocutions, incendies ou autres accidents.

liste

LC-20S5U

Precautions for using lead-free solder

1 Employing lead-free solder

"All PWBs" of this model employs lead-free solder. The LF symbol indicates lead-free solder, and is attached on the PWBs and service manuals. The alphabetical character following LF shows the type of lead-free solder. Example:

L Fa

Indicates lead-free solder of tin, silver and copper.

2 Using lead-free wire solder

When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional lead wire solder may cause damage or accident due to cracks. As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40°C, we recommend you to use a dedicated soldering bit, if you are not familiar with how to obtain lead-free wire solder or soldering bit, contact our service station or service branch in your area.

3 Soldering

As the melting point of lead-free solder (Sn-Ag-Cu) is about 220°C which is higher than the conventional lead solder by 40°C, and as it has poor solder wettability, you may be apt to keep the soldering bit in contact with the PWB for extended period of time. However, Since the land may be peeled off or the maximum heat-resistance temperature of parts may be exceeded, remove the bit from the PWB as soon as you confirm the steady soldering condition. Lead-free solder contains more tin, and the end of the soldering bit may be easily corroded. Make sure to turn on and off the power of the bit as required. If a different type of solder stays on the tip of the soldering bit, it is alloyed with lead-free solder. Clean the bit after every use of it. When the tip of the soldering bit is blackened during use, file it with steel wool or fine sandpaper.

Be careful when replacing parts with polarity indication on the PWB silk.

Lead-free wire solder for servicing

Part No, ★ Description Code ZHNDAi123250E J φ0.3mm 250g(1roll) BL ZHNDAi126500E J φ0.6mm 500g(1roll) BK ZHNDAi12801KE J φ1.0mm 1kg(1roll) BM

SPECIFICATIONS

LC-20S5U

Items

LCD panel Number of dots Video color systems

TV Standard (CCIR)

TV function

Y/C FILTER Brightness Viewing angles Audio amplifier Speakers

Terminals

OSD language Power supply Power consumption

Weight

Operating temperature

As a part of policy of continuous improvement, SHARP reserves the right to make design and specification changes for the LCD TV set improvement without prior notice. The performance specification figures indicated are nominal values of production units. There may be some deviations from these values in individual units.

TV Tuning System STEREO CATV

INPUT1 INPUT2 INPUT3/OUTPUT Antenna Headphone

Display only

Display with stand

Model

20" Advanced Super View & BLACK TFT LCD 921,600 dots VGA N358, N443, PAL, PAL-M, PAL-N, SECAM, PAL-60

NTSC/PAL-M/PAL-N PLL 181 ch.

MTS+SAP 125 ch. 3D Y/C FILTER 450 cd/m

H: 170° V: 170°

2.1 W × 2 1

AUDIO-IN, COMPONENT-IN AUDIO-IN, VIDEO-IN, S-VIDEO-IN AUDIO-IN, VIDEO-IN/AUDIO-OUT, VIDEO-OUT F-Type

Mini-jack for stereo (ø3.5 mm)

English/Spanish/French AC 110-240V, 50/60Hz 72 W (0.6 W standby): AC 120V

13.9 lbs./6.3 kg

15.9 lbs./7.2 kg

+32°F to +104°F (0°C to +40°C)

/64 × 421/64 in. (4 × 11 cm), 2 pcs.

LC-20S5U

Carrying handle

Rear View

Round lock for

Kensington Security

Standard slot*

* Using the Kensington Lock

• This LCD TV set has a Kensington Security

Standard slot for use with a Kensington

MicroSaver Security System. Refer to the

information that came with the system for

instructions on how to use it to secure the

LCD TV set.

ANT. (Antenna terminal)

AUDIO (R)

AUDIO (L)

AUDIO (R)

AUDIO (L)

VIDEO

S-VIDEO

INPUT3/OUTPUT

INPUT1

(COMPONENT)

INPUT2

AC INPUT

terminal

Part Names of the Main Unit

Controls

Upper control panel

CH ( )/( )

INPUT

POWER

VOL ( )/( )

Tilt the display by grabbing onto the

carrying handle while securely holding

down the stand with your other hand.

Speaker

OPC (Optical Picture

Control) sensor

Remote sensor

Headphone jack ( )

OPC (Optical Picture Control) indicator

POWER/WAKE UP TIMER indicator

Plug the headphone mini-plug into the headphone jack located

on the front of the main unit.

The OPC indicator lights up green when "OPC" is set to "ON".

POWER/WAKE UP TIMER indicator lights up green when the power is on,

and red when in the standby mode (the indicator will not light when the main

power is off), and orange when the wake up timer is set (the indicator will

light when in the standby mode).

To change the vertical angle of the LCD TV

set, tilt the screen up to 2.5 degrees forward

or 10 degrees backward. Please adjust

the angle so that the LCD TV set can be

watched most comfortably.

INPUT, CH ( )/( ), VOL (–)/( ) and MENU

on the main unit have the same functions as the same buttons on the remote control.

Fundamentally, this operation manual provides a description based on operation using the remote control.

Listening with Headphones

Plug the headphone mini-plug into the headphone jack located on the front of the main unit.

Adjust the sound volume using VOL (+)/(–) on the

remote control.

Secure cables and cords with the supplied cable clamp so that they do not get caught when mounting the cover.

On-screen display

VOLUME

Headphones

Headphones are not included in the supplied accessories.

No sound is heard from the main unit speakers when a headphone mini-plug is connected into the headphone jack.

Do not set the volume at a high level. Hearing experts advise against extended listening at high volume levels.

How to adjust the angle

Cable clamp

How to Fix the Cables

OPERATION MANUAL

LC-20S5U

CH ( )/( )

Selects a channel.

VIEW MODE

Selects the screen size.

SLEEP

Sets the sleep timer.

MENU RETURN

Returns to the previous screen.

AV MODE

Selects preferred AV MODE.

VOL ( )/( )

Sets the volume.

AUDIO ONLY

Outputs audio without screen image.

MUTE

Mutes the sound.

MTS

Selects audio settings.

Channel Select

Sets the channel.

POWER

Switches the Liquid Crystal

Television power on or standby.

INPUT

Switches the input source between

INPUT1, INPUT2, INPUT3 and TV

mode.

FLASHBACK

Returns to the previous channel.

DISPLAY

Displays the receiving channel and

the current time for 10 seconds.

ENTER

Executes a command.

/ / / (Cursor control)

Selects a desired item on the screen.

Displays the menu screen.

Displays Closed Caption subtitles.

BACKLIGHT

Adjusts the brightness of the screen.

17' (5m)

30°

Remote

sensor

Preparation

Part Names of the Remote Control

Installing Batteries in the Remote Control

Using the Remote Control

Before using the LCD TV set for the first time, install the two “AAA” size batteries supplied in the remote control. When the

batteries become depleted and the remote control fails to operate, replace the batteries with new “AAA” size batteries.

Open the battery cover.

Insert two “AAA” size batteries.

Close the battery cover.

pressing the ( )

Slide the cover while

part.

Place batteries with their

terminals corresponding

to the (+) and (–)

indications in the battery

compartment.

Engaging the lower

claw with the remote

control, close the cover.

Caution!

Precautions regarding batteries

Improper use of batteries can result in a leakage of chemicals and/or explosion. Be sure to follow the instructions below.

Place batteries with their terminals corresponding to the (+) and (–) indications.

Different types of batteries have different characteristics. Do not mix batteries of different types.

Do not mix old and new batteries. Mixing old and new batteries can shorten the life of new batteries and/or cause old

batteries to leak chemicals.

Remove batteries as soon as they are depleted. Chemicals that leak from batteries can cause a rash. If chemical

leakage is found, wipe it off with a cloth.

The batteries supplied with the LCD TV set may have a shorter operating time due to storage conditions.

If the remote control is not to be used for a long period of time, remove the batteries from the remote control.

Use the remote control by pointing it towards the remote sensor

window of the main unit. Objects between the remote control and

sensor window may prevent proper operation.

Do not apply shock to the remote control. In addition, do not

expose the remote control to liquids, and do not place it in an area

with high humidity.

Do not install or place the remote control in direct sunlight. The

heat may cause deformation of the unit.

The remote control may not work properly if the remote sensor

window is in direct sunlight or strong lighting. In such a case,

change the angle of the lighting or main unit, or operate the

remote control closer to the remote sensor window.

Cautions regarding use of the remote control

TV Signals in Your Region

This product is factory set to comply with the TV broadcasting system in the United States. For Brazil, Argentina and Uruguay,

set the color system according to the country before using this product by following the table below.

The VIDEO INPUT mode is compatible with color systems worldwide and is automatically set.

The World Multi Auto System

is compatible with all color

systems indicated below.

TV broadcasting

Country

system

Factory setting of color system

User setting

Video

TV TV

Color: NTSC

U.S.A.

TV ch: US ch

Color: PAL-M

Color: PAL-N

Brazil

Canada, Mexico,

Latin America

Argentina,

Uruguay

NTSC (N358)

US ch

World Multi

Auto System

Not required or N/A

Set color system to

PAL-M

PAL-N

The 3 Dimensional Y/C separation circuit* works only in the following cases:

the color system is set to N358 in TV mode or Video mode

the color system is set to AUTO (N358 signal is received) in Video mode

The 3 Dimensional Y/C separation circuit is used to remove flickering and color bleeding.

The 3 Dimensional Y/C separation circuit does not function when S-VIDEO signals are input.

1 N358

2 N443

3 PAL

4 PAL-M

5 PAL-N

6 SECAM

7 PAL-60

LC-20S5U

(379.7)

(482.9)

DIMENSIONS

(61.9)

Unit: inch (mm)

/8 (142.4)

(101.1)

(475.4)

(100)

(432.5)

(42.9)

/ 2

(62.6)

/8 (403.1)

(457.5)

(300.8)

(100)

(293)

(241.6)

REMOVING OF MAJOR PARTS

1. Remove the stand cover fixing screw (1 pc.).

2. Remove the stand fixing screws (4 pcs.).

3. Remove the carrying handle fixing screws (4 pcs.).

4. Remove the terminal cover.

5. Remove the terminal screws (2 pcs.).

6. Remove the cabinet B fixing screws (9 pcs.).

7. Remove the cabinet B after opening from the direction of an arrow.

8. Disconnect all the connectors from all the PWBs.

Cabinet B

LC-20S5U

Terminal Cover

Carrying Handle

Stand Cover

Cabinet A

Main PWB Sub PWB

Stand

SC1701

SC5204

P5005

P6705

P6703

P6702

P5001

P6701

P6700

SC4000

R/C, LED PWB

Inverter PWB

LC-20S5U

9. Remove the chassis frame fixing screws (2 pcs.).

10. Remove the 2 lock screws from the main PWB. Detach the chassis frame, together with its terminals, from the main PWB.

11. Remove the 5 lock screws from the sub PWB and the PWB fixing angle. Detach the chassis frame together with its terminals, from the sub PWB.

12. Remove the inverter PWB fixing screws (3 pcs.).

13. Remove the R/C, LED PWB fixing screws (2 pcs.).

14. Remove the 3 lock screws each from the right and left speakers and take out both the speakers.

Main PWB

Chassis Frame

R/C, LED PWB

Sub PWB

Inverter PWB

Speaker (L)

Speaker (R)

LC-20S5U

Back Shield (PSLDMA946WJFW)

Backlight Case (LHLDZ3104TPZA)

Lamp Unit, x5 (RLMPC2401TPZZ)

Diffusion Plate (PSLDK2553TPZZ)

Diffusion Sheet (Bottom) (PSLDK2554TPZZ)

Lens Sheet (POFMA0220TPZZ)

Bezel (LANGK3261TPZA)

Diffusion Sheet (Top), x2 (PSLDK2567TPZZ)

20" LCD Panel

» Precautions in handling the LCD panel

1. Handle it in a clean room. (above 50% humidity)

2. The worker must wear an earth band.

3. Be careful not to drop, vibrate and shock the panel.

4. Use an ionizer. (within 30 cm)

15. Detach the back shield.

16. Remove the 5 lock screws from the bezel and detach the bezel. Note: Carefully undo the hooks in the four directions.

17. Detach the LCD panel from the backlight case.

Note1: Carefully undo the hooks in the four directions. Note2: Do not remove the LCD panel from the panel chassis. Be careful not to touch the LCD panel's glass faces,

driver IC, PWBs and other components with bare hands. (Otherwise defects may be caused in the production line.)

18. Remove the diffusion sheets (top), lens sheet, diffusion sheet (bottom) and diffusion plate. Note: Fit the diffusion plate and sheets tightly in the backlight casing. If set out of position, the panel may get cracked.

19. Detach the lamp unit from the backlight case.

LC-20S5U

»Precautions in servicing the side-B (backside) of the main PWB unit

1. Remove the lock screws (2 pcs.) from the main PWB, detach the PWB from the chassis frame, and then turn it over.

2. Connect the service-specific extension cable (QCNW-E540WJQZ) between the main PWB (SC5201) and the sub PWB (P5002).

3. Connect the service-specific extension cable (QCNW-E540WJQZ) between the main PWB (SC5202) and the sub PWB (P5003).

4. Connect the service-specific extension cable (QCNW-E540WJQZ) between the main PWB (SC5203) and the sub PWB (P5004).

SC5201

SC5202

Main PWB (Side-B)

SC5203

CN1

SC1701

P5002

P5003

P5004

Sub PWBMain PWB

P5005

SC6701

R/C, LED PWB

Inverter PWB

Step Part No. Description

2 QCNW-E540WJQZ Extension Cable 26-pin Main (SC5201)-Sub (P5002) 3 QCNW-E540WJQZ Extension Cable 26-pin Main (SC5202)-Sub (P5003) 4 QCNW-E540WJQZ Extension Cable 26-pin Main (SC5203)-Sub (P5004)

» Other extension cable

Step Part No. Description

QCNW-C458WJQZ Extension Cable 80-pin Main (SC1701)-LCD (CN1) QCNW-D449WJQZ Extension Cable 13-pin Sub (P5005)-Inverter (SC6701)

LC-20S5U

ADJUSTING PROCEDURE OF EACH SECTION

The best adjustment is made before shipping. If any position deviation is found or after part replacement is

performed, adjust as follows.

1. Preparations

(1) Plug the AC power cord directly into a wall outlet. [1] Adjustment procedure 1-1. Adjusting the checker

Turning on the power (initialization) → Making the model and size settings → Transferring the model-related data to the setting E2PROM (I2C)

1-2. Adjusting the finish process

Final assembling →Turning on the power → Calling the adjustment process mode (bus connector) → Adjusting the common bias, TAMP and white balance (cut-off and gain) settings

[2] Calling the checker mode/adjustment process mode 2-1. Calling the checker mode

Keep KEY5 (pin (82) of microprocessor) at "L" and turn on the power.

KEY-4 KEY-5 Mode shift

H H Normal mode (Data is written and stored on EEP is brand-new.)

L H Shift to adjustment mode

H L Activated with the checker-oriented master ROM values (EEP still brand-new even after the

checker mode)

L L The EEP gets initialized and the microprocessor's master values are written.

(Process-adjusted settings not reprogrammed)

2-2. Calling the adjustment process mode There are two ways to call this mode. * Turn on the power and press the "ADJUST PROCESS" key on the remote controller. * Keep KEY4 (pin (81) of microprocessor) at "L" and turn on the power. * For servicing: Hold down the INPUT key and VOL (–) key at once, and turn on the power switch.("K" appears at

the top left of the screen to indicate the inspection process mode.) → Press the CH (ù) key and VOL (–) key at once. (The adjustment process mode screen shows up.) _ To quit, turn off the power. (Or turn off the power switch or turn off the remote controller.)

[3] Key operation in the adjustment process

Basic operation

3-1. Selecting the receiving channels * Using the CH (Ù)/(ù) keys, turn up and down an actual receiving channel.

Snap press: The channels are turned up and down one by one. Continuous press: The next receivable channel is searched.

* Various adjustments: The items are adjusted one by one by selecting on the menu screen and using the cursor

key and VOL (+)/(–) keys. * With the CURSOR UP/DOWN keys, select an adjustment item. * Using the MENU key, the adjustment items are selected one after another. When the bottom item on a page is

already selected and the MENU key is pressed, the top item on the next page is selected. * If any item on a page is selected and the preset key is pressed, the top item on the next page is selected.

Page 1 → Page 2 → Page 3 → Page 7→ Page 9 → Page 1 ... * If any item on a page is selected and the manual memory key is pressed, the top item on the same page is

selected. * Using the CURSOR LEFT/RIGHT keys and VOL (+)/(–) keys, turn up and down the setting of a selected item.

Hierarchical shift * When the ENTER key is pressed on any item other than I2C DATA on page 4, the setting page of the item shows

up. * To quit the setting page, press the front screen key.

LC-20S5U

3-2. ADC target level adjustment * Using the UP/DOWN keys, enter RGTAR, GGTAR, BGTAR of Service Menu Page 7 * Press CH12 of remote control, enter adjustment situation "A3 A3 A3" * Using the LEFT/RIGHT keys, make the first A3 correspond to RGTAR, the second A3 correspond GGTAR, and

the third A3 correspond BGTAR

* It is not adjusted usually.

[4] Initialization 4-1. Ground pins (81) and (82) of IC2001 (microprocessor) and turn on the power. 4-2. Make sure the screen size is set at 20 inches. 4-3. Make sure the model number is A634.

(Adjustment Process Menu Page 1)

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

MO D E L 6A3

INCH SIZE

ERR OR NO R ESE T

PUB L I C MOD E

–

EXT

CH I P

CO NTRO L

4 0

VER ROM 1. 00A GAIBU 0.000

[5] 5-1. Model-by-model sending data

Separately published.

5-2. ROM collection

Separately published.

[6] Adjustment 6-1. Common bias adjustment

1) Feed a built-in signal.

2) Apply the specified instrument at the center of the screen.

3) Observe the instrument output on an oscilloscope.

4) Adjust the "COM BIAS" setting on Adjustment Process Page 2 so that the peak-to-peak of the wave be minimized.

6-2. ADC Convert Output level adjustment

Component Input

1) 1080I 75% color bar input from Y(only Y connect) instrument : LEADER LT446 signal : COLOR BAR 75% settings : 01: 1920×1080/60I

H: 33.72kHz V: 29.97Hz

2) Service Menu page 7, "AUTO Gain-Offset1" change to "ON"

LC-20S5U

6-3. TAMP adjustment

1) Receive the standard color bar signal.

2) See if the "Y" reading (maximum) on Adjustment Process Page 2 is within the range in the following table. If not, adjust the "NTSC TAMP" setting on the same page to have the "Y" reading (maximum) within this range.

Model LC-20S5U

SETTING VALUE(NTSC)

Reference (Adjustment Process Menu Page 2)

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

COM B I A S

TAMP L

YDA T A

TAMP H

NTSC TAMP

PA L

–

155-158

TMAMP

TNAMP

45510

Y data

(white 100%)

3) The value of PAL/M TAMP and PAL/N TAMP is 6 more than the value of NTSC TAMP

6-4. White balance adjustment

1) Adjustment procedure Adjust the RGB CUTOFF2 setting for white 40% first and then the RGB-GAIN setting for white 80%. (1) Adjusting the test signal

[Input signal]White 80% (191 gradations) for the left of screen, and white 40% (92 gradations) for the right. [Specification]RGB CUTOFF2 and RGB-GAIN settings on Adjustment Process Page 3.

Adjustment spec. / Inspection spec.

White 80% x=0.276 ±0.004 ±0.01 Radius from center point

y=0.284 ±0.004 ±0.01 Radius from center point

White 40% x=0.262 ±0.002 ±0.01 Radius from center point

y=0.272 ±0.002 ±0.01 Radius from center point [Adjusting with the bus] Cut-off (RGB CUTOFF2): Fix the G setting at "0". Vary the R and B settings accordingly.

Adjustment range: -40(R) -50(B)

Gain (RGB-GAIN): Reduce the two strong colors. Adjustment range: ±40(R) -70(B)

(Reading with Minolta CA-210)

LC-20S5U

[7] Factory settings 7-1. Making factory settings

Use the adjustment remote controller for the factory settings.

1) Hold down the remote controller's FACTORY SETTING key.

2) Several seconds later, "SETTING COMPLETE" appears at the center of the screen. Now the settings are complete.

SETTING COMPLETE

7-2. Description of Factory Settings.

Setting content/range Initial

Value

(AV1) (AV2) (COMPONENT1)

MENU PICTURE AV MODE STANDARD/DYNAMIC/DYNAMIC(FIXED)/MOVIE/GAME DYNAMIC DYNAMIC DYNAMIC DYNAMIC

OPC ON/OFF

ON/OFF ON/OFF

INTERLACE/PROGRESSIVE

OFF

BACKLIGHT BRIGHT/NORMAL/DARK BRIGHT

(STANDARD) (DYNAMIC) (DYNAMIC(FIXED) (MOVIE) (GAME)

1 (DARK) ~9 (NORMAL)~17 (BRIGHT) 17 17 7 9 CONTRAST 0~60 30 40 30 30 BRIGHTNESS -30~+30

-30~+30

-10~+10

-10(L)~+10(R)

00 00

00 0 0

COLOR 0+5 TINT 00 0 SHARPNESS 00 0 ADVANCED COLOR TEMP. USER/HIGH/MIDDLE/LOW

RED 0 GREEN 0 BLUE I/P SETTING NOISE CLEAN FILM MODE

RESET YES/NO NO

AUDIO TREBLE 0

BASS 0 BALANCE 0 RESET YES/NO NO

SETUP CH-SETTING EZ-SETUP YES/NO YES

LANGUAGE ENGLISH/ESPANOL/FRANCAIS ENGLISH CH SEARCH ON/OFF ON AUTO CLOCK ON/OFF ON

START EZ SETUP YES/NO YES AIR/CABLE AIR/CABLE AIR CH SEARCH CH MEMORY -

MTS STEREO/SAP/MONO STEREO CLOCK SET AUTO/MANUAL AUTO

AUTO AUTO/[2]~[69] or EDS CH AUTO MANUAL DST ON/OFF OFF

OFF OFF

TIME 12:00AM~11:59PM 6:00AM

TIME DISPLAY ON/OFF ON INPUT3 SELECT IN/OUT /OUT IN V-CHIP BLOCK SECRET No. 4 digits input Clear

MPAA G (NONE)/BLOCK NONE

PG (NONE)/BLOCK NONE PG-13 (NONE)/BLOCK NONE R (NONE)/BLOCK NONE NC-17 (NONE)/BLOCK NONE X (NONE)/BLOCK NONE

TV GUIDELINES TV-Y (NONE)/BLOCK NONE

TV-Y7 (NONE)/BLOCK NONE TV-G (NONE)/BLOCK NONE TV-PG (NONE)/BLOCK NONE TV-14 (NONE)/BLOCK NONE TV-MA (NONE)/BLOCK NONE BLOCK CONTENT

D (BLANK)/BLOCK BLANK (UN BLOCK) L (BLANK)/BLOCK BLANK (UN BLOCK) S (BLANK)/BLOCK BLANK (UN BLOCK) V (BLANK)/BLOCK BLANK (UN BLOCK)

FV (BLANK)/BLOCK BLANK (UN BLOCK) CAN.ENGLISH RATINGS

C (NONE)/BLOCK NONE C8+ (NONE)/BLOCK NONE G (NONE)/BLOCK NONE PG (NONE)/BLOCK NONE 14+ (NONE)/BLOCK NONE

18+ (NONE)/BLOCK NONE CAN.FRENCH RATINGS

G (NONE)/BLOCK NONE

8 ans+ (NONE)/BLOCK NONE

13 ans+ (NONE)/BLOCK NONE

16 ans+ (NONE)/BLOCK NONE

18 ans+ (NONE)/BLOCK NONE STATUS ON/OFF OFF

CLOSED CAPTION OFF/CC1/CC2/T1/T2 T1

(TV) (AV1) (AV2)

COLOR SYSTEM 20 N358 N358 N358

LANGUAGE ENGLISH/ESPANOL/FRANCAIS ENGLISH

OPTION VIEW MODE 4:3/16:9/ZOOM/STRETCH 4:3

AUDIO ONLY ON/OFF OFF BLUE SCREEN ON/OFF OFF SLEEP TIMER OFF/30/60/90/120/150MIN OFF(Clear) WAKE UP TIMER TIMER ON/OFF OFF

TIME 12:00AM~11:59PM CHANNEL CH1~125/COMPONENT1/COMPONENT2 or AV1/AV2 CH2 VOL. 0~60 20

NO SIGNAL OFF ENABLE/DISABLE NO OPERATION OFF ENABLE/DISABLE PICTURE FLIP NORMAL/MIRROR/ROTATE/UPSIDE DOWN NORMAL

(Items other than MENU)

ONEZ SETUP LAST CHANNEL LAST TV/INPUT

2ch

TV FLASH BACK SKIP DATA_CATV ALL SKIP SKIP DATA_AIR ALL SKIP VOLUME 20 LINE OUT LEVEL(VAO)

0 EDS CH (AUTO)

USER

PROGRESSIVE

DISABLE

12:00AM

LC-20S5U

N358/N443/PAL/PAL-M/PAL-N/SECAM/PAL60

(Only for N358/PAL-M/PAL-N in TV mode)

LC-20S5U

8. Lamp error detection

8-1. Functional description

This LCD color television has a function (lamp error detection) to be turned off automatically for safety when the lamp or lamp circuit is abnormal. If the lamp or lamp circuit is abnormal, or some other errors happen, and the lamp error detection is executed, the followings occur. 1 The main unit of television is turned off 5 seconds after it is turned on. (The power LED on the front side of

TV turns from green to red.)

2 If the situation 1 happens 5 times sequentially, television can not be turned on. (The power LED remains

red.)

8-2. Countermeasures 8-2-1. Check when turning off the lamp error detection

When television is turned off by the lamp error detection mentioned above, it enters the adjustment process with the power LED red. Entering the adjustment process turns off the error detection and turns on TV. This enables the operation check to detect errors in the lamp or lamp circuit. Check whether "ERROR NO RESET" on line 4, page 1 of the adjustment process is 1 or more. If it is 1 or more, it indicates the lamp error detection was executed.

8-2-2. Resetting of the lamp error count

After confirming that the lamp or lamp circuit is normal, reset the lamp error count. Select "ERROR NO RESET" on line 4, page 1 of the adjustment process and set the number to 0 using the "VOL (+)/(–)" keys.

Page 1 of the adjustment process

M O D E L A634

I N C H S I Z E 20

E R R O R N O R E S E T 5

P U B L I C M O D E OFF

V – C H I P 1

E X T C O N T R O L OFF

V E R R O M 1. X X A G AI B U X. X X X

Reset 0

Afterwards, perform the operation check to confirm that the lamp error detection does not function.

LC-20S5U

LIST OF THE ADJUSTMENT PROCESS MODE MENU

For calling the adjustment process mode and keying in this mode, refer back to "ADJUSTING PROCEDURE OF EACH SECTION".

ADJUSTMENT PROCESS 1st LEVEL ITEM DEFAULT TABLE

Page No. Item

BASIC SETTINGS

1 MODEL A634

INCH SIZE 20

ERROR NO RESET 0 PUBLIC MODE OFF V-CHIP 1 EXT CONTROL OFF ROM AND GAIBU VERSION NUMBERS DISPLAYED AT THE BOTTOM.

Initial

Value (Do not change other items than designated.)

MODEL NUMBER SELECT NOT MODIFIABLE SCREEN SIZE SELECT (20-INCH AND 13/15-INCH SETTINGS NOT SWITCHABLE IN CASE OF DIFFERENT SYSTEMS) LAMP ERROR COUNT AND RESET SEE THE LAMP ERROR DETECTION. HOTEL MODE SETTING NOT USED VCHIP LINE MUTE SETTING NOT USED BUS, UART OPEN NOT USED

Function

Response precautions on servicing

USED FOR ADJUSTMENT PROCESS INITIALIZATION, NOT MODIFIABLE FOR

OTHER CASES. DATA REWRITE AND READJUSTMENT REQUIRED WHEN INITIALIZED.

VIDEO ADJUSTMENT

2 COM BIAS 450

TAMP L 155 YDATA 59

TAMP H 158 NTSC TAMP 90 TAMP ADJUSTMENT SEE THE ADJUSTMENT PROCEDURES. PAL-M TAMP 96 TAMP ADJUSTMENT SEE THE ADJUSTMENT PROCEDURES. PAL-N TAMP 96 TAMP ADJUSTMENT SEE THE ADJUSTMENT PROCEDURES.

BACKGROUND ADJUSTMENT

COMPONENT AD ADJUSTMENT

7 AUTO GAIN-OFFSET1 OFF

R CUTOFF2 0 RED CUT-OFF ADJUSTMENT 2 SEE THE ADJUSTMENT PROCEDURES. G CUTOFF2 0 GREEN CUT-OFF ADJUSTMENT 2 SEE THE ADJUSTMENT PROCEDURES. B CUTOFF2 0 BLUE CUT-OFF ADJUSTMENT 2 SEE THE ADJUSTMENT PROCEDURES. R-GAIN 0 WHITE BALANCE ADJUSTMENT 2 SEE THE ADJUSTMENT PROCEDURES. G-GAIN 0 WHITE BALANCE ADJUSTMENT 2 SEE THE ADJUSTMENT PROCEDURES. B-GAIN 0 WHITE BALANCE ADJUSTMENT 2 SEE THE ADJUSTMENT PROCEDURES. RGB GAMMA 1.0 RGB γ COEFFICIENT SETTING NOT USED

AD R GAIN AD G GAIN 180

AD B GAIN 180 AD R OFFSET 126 AD G OFFSET 128 AD B OFFSET R GTAR G GTAR B GTAR R GCAL G GCAL B GCAL R OCAL G OCAL B OCAL

180

126 A3 A3 A3 00 36 00 81 35 81

COMMON BIAS ADJUSTMENT SEE THE ADJUSTMENT PROCEDURES. Y LOWER LIMIT SETTING AT TAMP ADJUSTMENT DATA READ VALUE AT TAMP ADJUSTMENT Y UPPER LIMIT SETTING AT TAMP ADJUSTMENT

1080I/720P INPUT RED GAIN ADJUSTMENT 1080I/720P INPUT GREEN GAIN ADJUSTMENT 1080I/720P INPUT BLUE GAIN ADJUSTMENT 1080I/720P INPUT RED OFFSET ADJUSTMENT 1080I/720P INPUT GREEN OFFSET ADJUSTMENT 1080I/720P INPUT BLUE OFFSET ADJUSTMENT 1080I/720P INPUT RED/GREEN/BLUE ADJUSTMENT TARGET DISPLAY OF Y LEVEL/CHROMA CALCULATED VALUES DISPLAY OF Y LEVEL/WHITE LEVEL CALCULATED VALUES IN CLAMP FIELD

NOT USED SEE THE ADJUSTMENT PROCEDURES. NOT USED

SEE THE ADJUSTMENT PROCEDURE SEE THE ADJUSTMENT PROCEDURE SEE THE ADJUSTMENT PROCEDURE NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED

TABLE OF VARIOUS SETTINGS

9 I2C DATA 0

I2C DATA SOUND —

DVP — TUNER — OTHERS —

I2C BUS CONTROL IC DATA WRITE AND READ

WAIT WRITE AND READ EXECUTED NOT USED

SHIFT TO THE SOUND ADJUSTMENT PAGE SHIFT TO THE DVP ADJUSTMENT PAGE SHIFT TO THE TUNER ADJUSTMENT PAGE SHIFT TO THE OTHER ADJUSTMENT PAGE

NOT USED

USE ENTER KEY TO GO TO THE SOUND ADJUSTMENT PAGE. USE ENTER KEY TO GO TO THE TC ADJUSTMENT PAGE. USE ENTER KEY TO GO TO THE TUNER ADJUSTMENT PAGE. USE ENTER KEY TO GO TO THE OTHER ADJUSTMENT PAGE.

LC-20S5U

AUDIO ADJUSTMENT PROCESS SPECIFICATIONS

Page No. Item

AUDIO ADJUSTMENT

SOUND1 VOLUME 20 SOUND VOLUME

MSP DATA 0 MSP DATA CARRIER MUTE ON IGR THR 12D IGR THRESH LEVEL

AUDIO ADJUSTMENT

SOUND2 PRESCALE SCART 27

PRESCALE FM/AM-M 31 PRE-SCALE SETTING (TV) NOT USED HPF VDS OFF OFF

AUDIO ADJUSTMENT

SOUND3 BAND1 MIN TV -0450

OTHER -0450

BAND1 CNT TV +0350

OTHER +0350

BAND1 MAX TV +1150

OTHER +1150

BAND2 MIN TV -0475

OTHER -0475

BAND2 CNT TV -0175

OTHER -0175

BAND2 MAX TV +0125

OTHER +0125

BAND3 MIN TV -0425

OTHER -0425

Initial

Value (Do not change other items than designated.)

AUDIO IC MSP DATA WRITE AND READ

WAIT

WRITE AND READ EXECUTED AUDIO OUTPUT SETTING WITHOUT TV SYNC

PRE-SCALE SETTING (EXTERNAL INPUT)

HIGH-PASS FILTER SETTING WITH DOLBY VIRTUAL OFF

EQUALIZER SETTING (WITH TV INPUT) EQUALIZER SETTING (WITH OTHER INPUT THAN TV) EQUALIZER SETTING (WITH TV INPUT) EQUALIZER SETTING (WITH OTHER INPUT THAN TV) EQUALIZER SETTING (WITH TV INPUT) EQUALIZER SETTING (WITH OTHER INPUT THAN TV) EQUALIZER SETTING (WITH TV INPUT) EQUALIZER SETTING (WITH OTHER INPUT THAN TV) EQUALIZER SETTING (WITH TV INPUT) EQUALIZER SETTING (WITH OTHER INPUT THAN TV) EQUALIZER SETTING (WITH TV INPUT) EQUALIZER SETTING (WITH OTHER INPUT THAN TV) EQUALIZER SETTING (WITH TV INPUT) EQUALIZER SETTING (WITH OTHER INPUT THAN TV)

Function

Response precautions on servicing

NOT USED NOT USED NOT USED NOT USED NOT USED

NOT USED

NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED

AUDIO ADJUSTMENT

SOUND4 BAND4 MIN TV -0150

OTHER -0150

BAND4 CNT TV +0150

OTHER +0150

BAND4 MAX TV +450

OTHER +450

BAND5 MIN TV -0700

OTHER -0700

BAND5 CNT TV +0100

OTHER +0100

BAND5 MAX TV +0900

OTHER +0900

NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED

VIDEO ADJUSTMENT PROCESS SPECIFICATIONS

Page No. Item

VIDEO ADJUSTMENT

DVP1 DVP DATA 0000 00 ------(----)

DVP TEST PATTERN 0 TEST PATTERN SELECT VCDOFFSET 15 VCDWINDOW 30

VIDEO ADJUSTMENT

DVP3 N358 TV CONTRAST 128 IMAGE SETTING (TV) Change to 126

N358 AV CONTRAST 128 N358 TV BRIGHT 128 BRIGHTNESS SETTING (TV) Change to 118 N358 AV BRIGHT 128 N358 TV COLOR 42 COLOR DENSITY SETTING (TV) Change to 46 N358 AV COLOR 42 N358 TV TINT 128 TINT SETTING (TV) Change to 121 N358 AV TINT 128 N358 TV SHARP V 100 V PICTURE QUALITY SETTING (TV) NOT USED N358 AV SHARP V 100 N358 TV SHARP H1 120 H PICTURE QUALITY SETTING 1 (TV) NOT USED N358 AV SHARP H1 130 N358 TV SHARP H2 80 H PICTURE QUALITY SETTING 2 (TV) Change to 120 N358 AV SHARP H2 90

Initial

Value (Do not change other items than designated.)

—

DVP-RELATED GENERAL-PURPOSE VARIABLE SETTINGS

VERTICAL COUNT-DOWN MINIMUM OSCILLATION CYCLE VERTICAL COUNT-DOWN SYNC RANGE

IMAGE SETTING (COMPOSITE, S VIDEO)

BRIGHTNESS SETTING (COMPOSITE, S VIDEO)

COLOR DENSITY SETTING (COMPOSITE, S VIDEO)

TINT SETTING (COMPOSITE, S VIDEO)

V PICTURE QUALITY SETTING (COMPOSITE, S VIDEO)

H PICTURE QUALITY SETTING 1 (COMPOSITE, S VIDEO)

H PICTURE QUALITY SETTING 2 (COMPOSITE, S VIDEO)

Function

NOT USED SEE THE ADJUSTMENT PROCESS MODE TEST PATTERNS. NOT USED NOT USED

Change to 126

Change to 118

Change to 46

Change to 117

NOT USED

LC-20S5U

Response precautions on servicing

VIDEO ADJUSTMENT

DVP4 N443 AV CONTRAST 128

N443 AV BRIGHT 128 N443 AV COLOR 37 N443 AV TINT 128 N443 AV SHARP V 100 N443 AV SHARP H1 150 N443 AV SHARP H2 150

VIDEO ADJUSTMENT

DVP5 PAL AV CONTRAST 128

PAL AV BRIGHT 128 PAL AV COLOR 37 PAL AV TINT 128 PAL AV SHARP V 100 PAL AV SHARP H1 150 PAL AV SHARP H2 150

VIDEO ADJUSTMENT

DVP6 SECAM AV CONTRAST 128

SECAM AV BRIGHT 128 SECAM AV COLOR 37 SECAM AV TINT 128 SECAM AV SHARP V 100 SECAM AV SHARP H1 150 SECAM AV SHARP H2 150

IMAGE SETTING (COMPOSITE, S VIDEO) BRIGHTNESS SETTING (COMPOSITE, S VIDEO) COLOR DENSITY SETTING (COMPOSITE, S VIDEO) TINT SETTING (COMPOSITE, S VIDEO) V PICTURE QUALITY SETTING (COMPOSITE, S VIDEO) H PICTURE QUALITY SETTING 1 (COMPOSITE, S VIDEO) H PICTURE QUALITY SETTING 2 (COMPOSITE, S VIDEO)

Change to 126 Change to 127 NOT USED Change to 126 NOT USED NOT USED NOT USED

Change to 114 Change to 129 Change to 43 Change to 120 NOT USED NOT USED NOT USED

Change to 117 Change to 125 Change to 39 Change to 130 NOT USED NOT USED NOT USED

VIDEO ADJUSTMENT

DVP7 PAL60 AV CONTRAST 128

PAL60 AV BRIGHT 128 PAL60 AV COLOR 37 PAL60 AV TINT 128 PAL60 AV SHARP V 100 PAL60 AV SHARP H1 150 PAL60 AV SHARP H2 150

NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED

LC-20S5U

Page No. Item

VIDEO ADJUSTMENT

DVP8 PAL-M TV CONTRAST 128 IMAGE SETTING (TV) Change to 110

PAL-M AV CONTRAST 128 PAL-M TV BRIGHT 128 BRIGHTNESS SETTING (TV) Change to 122 PAL-M AV BRIGHT 128 PAL-M TV COLOR 37 COLOR DENSITY SETTING (TV) Change to 39 PAL-M AV COLOR 37 PAL-M TV TINT 128 TINT SETTING (TV) Change to 130 PAL-M AV TINT 128 PAL-M TV SHARP V 100 V PICTURE QUALITY SETTING (TV) NOT USED PAL-M AV SHARP V 100 PAL-M TV SHARP H1 150 H PICTURE QUALITY SETTING 1 (TV) NOT USED PAL-M AV SHARP H1 150 PAL-M TV SHARP H2 130 H PICTURE QUALITY SETTING 2 (TV) NOT USED PAL-M AV SHARP H2 150

VIDEO ADJUSTMENT

DVP9 PAL-N TV CONTRAST 128 IMAGE SETTING (TV) Change to 120

PAL-N AV CONTRAST 128 PAL-N TV BRIGHT 128 BRIGHTNESS SETTING (TV) Change to 116 PAL-N AV BRIGHT 128 PAL-N TV COLOR 37 COLOR DENSITY SETTING (TV) Change to 40 PAL-N AV COLOR 37 PAL-N TV TINT 128 TINT SETTING (TV) Change to 130 PAL-N AV TINT 128 PAL-N TV SHARP V 100 V PICTURE QUALITY SETTING (TV) NOT USED PAL-N AV SHARP V 100 PAL-N TV SHARP H1 150 H PICTURE QUALITY SETTING 1 (TV) NOT USED PAL-N AV SHARP H1 150 PAL-N TV SHARP H2 130 H PICTURE QUALITY SETTING 2 (TV) NOT USED PAL-N AV SHARP H2 150

Initial

Value (Do not change other items than designated.)

IMAGE SETTING (COMPOSITE, S VIDEO)

BRIGHTNESS SETTING (COMPOSITE, S VIDEO)

COLOR DENSITY SETTING (COMPOSITE, S VIDEO)

TINT SETTING (COMPOSITE, S VIDEO)

V PICTURE QUALITY SETTING (COMPOSITE, S VIDEO)

H PICTURE QUALITY SETTING 1 (COMPOSITE, S VIDEO)

H PICTURE QUALITY SETTING 2 (COMPOSITE, S VIDEO)

IMAGE SETTING (COMPOSITE, S VIDEO)

BRIGHTNESS SETTING (COMPOSITE, S VIDEO)

COLOR DENSITY SETTING (COMPOSITE, S VIDEO)

TINT SETTING (COMPOSITE, S VIDEO)

V PICTURE QUALITY SETTING (COMPOSITE, S VIDEO)

H PICTURE QUALITY SETTING 1 (COMPOSITE, S VIDEO)

H PICTURE QUALITY SETTING 2 (COMPOSITE, S VIDEO)

Function

NOT USED

Change to 40

Change to 127

NOT USED

Change to 123

NOT USED

Change to 39

Change to 130

NOT USED

Response precautions on servicing

VIDEO ADJUSTMENT

DVP10 525I CONT 128 IMAGE SETTING (TV) Change to 118

525I BRIGHT 128 BRIGHTNESS SETTING (TV) Change to 121 525I COLOR 70 COLOR DENSITY SETTING (TV) Change to 80 525I TINT 128 TINT SETTING (TV) Change to 118 525I SHARP V 100 V PICTURE QUALITY SETTING (TV) NOT USED 525I SHARP H1 130 H PICTURE QUALITY SETTING 1 (TV) NOT USED 525I SHARP H2 90 H PICTURE QUALITY SETTING 2 (TV) NOT USED 525P CONT 144 525P BRIGHT 122 525P COLOR 78 525P TINT 146 525P SHARP V 130 V PICTURE QUALITY SETTING (TV) NOT USED 525P SHARP H1 120 H PICTURE QUALITY SETTING 1 (TV) NOT USED 525P SHARP H2 120 H PICTURE QUALITY SETTING 2 (TV) NOT USED

IMAGE SETTING (COMPOSITE, S VIDEO) BRIGHTNESS SETTING (COMPOSITE, S VIDEO) COLOR DENSITY SETTING (COMPOSITE, S VIDEO) TINT SETTING (COMPOSITE, S VIDEO)

Change to 110 Change to 128 Change to 80 Change to 127

LC-20S5U

Page No. Item

VIDEO ADJUSTMENT

DVP11 625I CONT 128 IMAGE SETTING (TV) NOT USED

625I BRIGHT 128 BRIGHTNESS SETTING (TV) Change to 130 625I COLOR 70 COLOR DENSITY SETTING (TV) Change to 66 625I TINT 128 TINT SETTING (TV) Change to 120 625I SHARP V 100 V PICTURE QUALITY SETTING (TV) NOT USED 625I SHARP H1 130 H PICTURE QUALITY SETTING 1 (TV) NOT USED 625I SHARP H2 90 H PICTURE QUALITY SETTING 2 (TV) NOT USED 625P CONT 144 625P BRIGHT 122 625P COLOR 78 625P TINT 146 625I SHARP V 130 V PICTURE QUALITY SETTING (TV) NOT USED 625I SHARP H1 120 H PICTURE QUALITY SETTING 1 (TV) Change to 180 625I SHARP H2 120 H PICTURE QUALITY SETTING 2 (TV) Change to 180

VIDEO ADJUSTMENT

DVP12 1125I CONT 144 IMAGE SETTING (TV) Change to 109

1125I BRIGHT 122 BRIGHTNESS SETTING (TV) Change to 135 1125I COLOR 28 COLOR DENSITY SETTING (TV) Change to 77 1125I TINT 146 TINT SETTING (TV) Change to 119 1125I SHARP V 100 V PICTURE QUALITY SETTING (TV) NOT USED 1125I SHARP H1 100 H PICTURE QUALITY SETTING 1 (TV) NOT USED 1125I SHARP H2 100 H PICTURE QUALITY SETTING 2 (TV) NOT USED 750P 60 CONT 144 750P 60 BRIGHT 122 750P 60 COLOR 78 750P 60 TINT 146 750P 60 SHARP V 100 V PICTURE QUALITY SETTING (TV) NOT USED 750P 60 SHARP H1 100 H PICTURE QUALITY SETTING 1 (TV) NOT USED 750P 60 SHARP H2 100 H PICTURE QUALITY SETTING 2 (TV) NOT USED

Initial

Value (Do not change other items than designated.)

IMAGE SETTING (COMPOSITE, S VIDEO) BRIGHTNESS SETTING (COMPOSITE, S VIDEO) COLOR DENSITY SETTING (COMPOSITE, S VIDEO) TINT SETTING (COMPOSITE, S VIDEO)

Function

Change to 128 Change to 141 Change to 73 Change to 122

Change to 113 Change to 135 Change to 75 Change to 128

Response precautions on servicing

LC-20S5U

ADJUSTMENT PROCESS TUNER ITEM DEFAULT TABLE

Page No. Item

TUNER SETTINGS

TUNER1 AFT UP 1.80

AFT DOWN 1.20 LSYNC 150 HSYNC 162 LSYNC2 150

HSYNC2 162

AVSYNC 1 COMPSYNC 3 EDS TEST 10

TUNER SETTINGS

TUNER2 AFT FARTIME 50

AFT NEARTIME 30 AFT NEARMTIME 10 AFT 1STEPTIME 10 AFT CSYNCTIME 50 SYNC ON 10 SYNC WIDTH 1

Initial

Value (Do not change other items than designated.)

AFT VOLTAGE REFERENCE LEVEL (ALL BANDS) AFT VOLTAGE REFERENCE LEVEL (ALL BANDS) SYNC JUDGMENT THRESHOLD (TV) SYNC JUDGMENT THRESHOLD (TV) SYNC DETECT THRESHOLD LEVEL (ONLY FOR AFT-EQUIPPED TV CHANNEL SELECTION (1CH)) SYNC DETECT THRESHOLD LEVEL (ONLY FOR AFT-EQUIPPED TV CHANNEL SELECTION (1CH)) SYNC JUDGMENT THRESHOLD (EXTERNAL INPUT) SYNC JUDGMENT THRESHOLD (COLOR DIFFERENCE INPUT) DURATION UNTIL JUDGMENT OF NO EDS TIME DATA (SECONDS)

CHANNEL PRESET TIME ADJUSTMENT 1 CHANNEL PRESET TIME ADJUSTMENT 2 CHANNEL PRESET TIME ADJUSTMENT 3 CHANNEL PRESET TIME ADJUSTMENT 4 CHANNEL PRESET TIME ADJUSTMENT 5 CHANNEL PRESET TIME ADJUSTMENT 6 CHANNEL PRESET TIME ADJUSTMENT 7

Function

Response precautions on servicing

NOT USED NOT USED NOT USED NOT USED NOT USED

NOT USED

NOT USED NOT USED NOT USED

NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED NOT USED

OTHERS

OTHERS1 DAC DATA 00--- —

L ERROR WAIT 15s L ERROR H TIME 1.0s LAMP ERROR DETECT TIME NOT USED TV AUTO GAIN OFF AUTO GAIN SETTING FOR TV NOT USED PWM FREQ 150 PWM DUTY 0 OPC THRESHOLD 24 INPUT LEVEL THRESHOLD FROM NOT USED

HOTEL POWERFIX OFF COMP SYSTEM AUTO REMOCON CODE DISPLAYED AT THE BOTTOM

DAC-RELATED GENERAL-PURPOSE VARIABLE SETTINGS LAMP ERROR DETECT WAIT TIME

DIMMER FREQUENCY SETTING (IN HZ) DIMMER DUTY SETTING

BRIGHTNESS SENSOR STOP MODE TO OPERATION MODE USED FOR FIXED HOTEL MODE POWER ON COMPONENT SIGNAL SELECT IN ADJUSTMENT PROCESS

NOT USED

NOT USED NOT USED

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