Sharp LC-20SH6U Schematic

LC-20SH6U

N46A1LC20SH6U

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-20SH6U

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 ..................................................................................................23

» TROUBLESHOOTING TABLE ....................................................................................................................28

» MAJOR IC INFORMATIONS ...................................................................................................................... 32

» BLOCK DIAGRAM ......................................................................................................................................34

» OVERALL WIRING DIAGRAM ...................................................................................................................36

» DESCRIPTION OF SCHEMATIC DIAGRAM ............................................................................................. 38

» SCHEMATIC DIAGRAM

ËINVERTER Unit .......................................................................................................................................39

ËMAIN Unit.................................................................................................................................................40

ËSUB Unit ..................................................................................................................................................54

ËLED/HP Unit.............................................................................................................................................66

» PRINTED WIRING BOARD ASSEMBLIES ................................................................................................68

» REPLACEMENT PARTS LIST.................................................................................................................... 84

» PACKING OF THE SET ..............................................................................................................................97

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

LC-20SH6U

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 120 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-20SH6U

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 120V. (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-20SH6U

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-20SH6U

Items

Model

LCD panel 20" Advanced Super View

Number of dots 921,600 dots VGA Video color systems N358

TV Standard (CCIR) NTSC

TV function

Brightness 430 cd/m Viewing angles H: 170° V: 170° Audio amplifier 1.0 W 2 Speakers 113/20 41/3in. (42 110 mm), 2 pcs

Terminals INPUT3/OUTPUT VIDEO-IN, AUDIO-IN / VIDEO-OUT, AUDIO-OUT

OSD language English/Spanish/French Power supply AC 120V, 60Hz Power consumption

Weight

Operating temperature +32°F to +104°F (0°C to +40°C)

TV Tuning System PLL 181 ch. STEREO MTS+SAP CATV 125 ch.

INPUT1 COMPONENT-IN, AUDIO-IN INPUT2 VIDEO-IN, S-VIDEO-IN, AUDIO-IN

Antenna F-Type Headphone Mini-jack for stereo (ø3.5 mm)

Display only

Display with stand

& BLACK TFT LCD

71 W (0.8 W standby): AC 120V

14.1 lbs./ 6.4 kg

16.1 lbs./ 7.3 kg

LC-20SH6U

* Typical time for power output decrease of about one-half assuming continuous use in a room with normal lighting, normal brightness and

temperature at 77°F/25°C

As a part of policy of continuous improvement, SHARP reserves the right to make design and specification changes for product 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.

LC-20SH6U

Terminals

PBY

INPUT1

AUDIO (L)

INPUT3/OUTPUT

AUDIO (L)

VIDEO

AUDIO (R)

ANT. (Antenna terminal)

INPUT2

AUDIO (L)

VIDEO

AUDIO (R)

S-VIDEO

Round lock for Kensington

Security Standard slot*

AC INPUT

terminal

(AC120 V)

Using the Kensington Lock *

How to Fix the Cables

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.

ï This LCD TV set has a Kensington Security Standard slot for

Be sure to secure the cables and AC cord with the supplied cable clamp.

Cable clamp

CH (Channel)

Upper control panel

Controls

Part Names of Main Unit

OPERATION MANUAL

The examples used throughout this manual are based on the LC-20SH6U model.

POWER

INPUT

)/( ) (

VOL (Volume)

(–)/(+)

To change the vertical angle of the LCD

TV set, tilt the screen up to 2.5 degrees

forwards or 10 degrees backwards.

Please adjust the angle so that the LCD

TV set can be watched most comfortably.

Headphone jack

Plug the headphone mini-plug into the headphone jack

located on the front of the main unit.

Speaker

Remote sensor

Plug the headphone mini-plug into the headphone jack

located on the front of the LCD TV set.

Adjust the sound volume using VOL (+)/(ñ) on the remote

SLEEP TIMER indicator

The SLEEP TIMER indicator lights up red when the

SLEEP TIMER is set to ìONî.

control.

Listening with Headphones

POWER indicator

The POWER indicator lights up green

when the power is on, and red when in the

standby mode (the indicator will not light

up when the main power is off).

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

NOTE

ï INPUT, CH ( )/( ), VOL (–)/(+) and MENU on the main unit have the same functions as the same buttons on the remote control.

VOLUME

On-screen display

NOTE

headphone mini-plug is connected into the headphone jack.

against extended listening at high volume levels.

ï Headphones are not included in the supplied accessories.

ï No sound is heard from the main unit speakers when a

ï Do not set the volume at a high level. Hearing experts advise

LC-20SH6U

Close the battery cover.

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.

Insert two “AAA” size batteries.

Open the battery cover.

Installing Batteries in the Remote Control

Preparation

• Align the tab on the battery cover ( ) and place

it while pressing the tab ( ) to close it.

Remote

17' (5m)

sensor

Using the Remote Control

terminals corresponding

to the (+) and (–)

indications in the battery

compartment.

• Place batteries with their

batteries

() part.

Caution!

batteries to leak chemicals.

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

Precautions regarding

leakage is found, wipe it off with a cloth.

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

• 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 an extended 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.

Cautions regarding use of the remote control

•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.

heat may cause deformation of the unit.

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

window is under 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.

•The remote control may not work properly if the remote sensor

•Detach the cover

while pressing the

Part Names of the Remote Control

DISPLAY

Displays the receiving channel

and the current time for 10

seconds.

POWER

Channel Select

Sets the channel.

Switches the Liquid Crystal

Television power on or standb

INPUT ( )/( )

Switches the input source

between INPUT1, INPUT2,

INPUT3 and TV modes.

MUT

Mutes the sound.

Selects audio settings

CH ( )/( )

Selects channel.

VOL (+)/(–)

Sets the volum

SLEEP

Sets the sleep timer.

AV MODE

Selects preferred AV MODE.

channel.

FLASHBACK

AUDIO ONL

Returns to the previous

Outputs audio without screen

ecutes a command.

ENTER

image

subtitles

Displays Closed Caption

/ / / (Cursor control)

Selects a desired item on the

screen.

Displays the menu screen.

screen.

PIC. FLIP

BACKLIGHT

Sets the orientation of the

Adjusts the brightness of the

picture

screen.

MENU RETURN

Returns to the previous

TV parental guidelines

content based

FV V S L D

Violence) Situation) Language) Suggestive

Rating (Fantasy (Violence) (Sexual (Adult (Sexually

Dialog)

TV-Y (All children)

×××

TV-Y7 (Direct to Older Children) ×

TV-G (General Audience)

TV-PG (Parental Guidance Suggested) ××

TV-14 (Parents Strongly Cautioned) × ×

TV-MA (Mature Audience Only) ×

age

based

: The content rating can be set, but this rating is not normally broadcast by TV stations.

based ratings, but only in the combinations indicated

• Age-based ratings can be modified by the content-

NOTE

Example:

When TV-Y7 in the age-based rating is set to BLOCK, this will automatically block the higher ratings: TV-G, TV-PG, TV-14 and TV-MA. In addition,

×:The content rating can be set.

D, L, S, V and FV in BLOCK CONTENT are automatically blocked unless you manually set BLOCK CONTENT.

TV parental guidelines

by an X in the table above.

age-based ratings regardless of content rating

settings.

CONTENT will display all items.

• Choosing a lower age-based rating blocks the higher

• If you set TV-Y and TV-Y7 to BLOCK, BLOCK

LC-20SH6U

DIMENSIONS

Unit: inch (mm)

REMOVING OF MAJOR PARTS

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

2. Remove the stand fixing screws (5 pcs.).

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

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

5. Disconnect all the connectors from all the PWBs.

Cabinet B

Cabinet A

LC-20SH6U

Stand Cover

Stand

Main PWB Sub PWB

SC1701

SC5204

P5005

P6705

P6703

P6702

P5001

P6701

SC4000

PWB HOLDER

P6700

Inverter PWBLED/HP PWB

LC-20SH6U

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

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

8. Remove the 4 lock screws from the sub PWB and the PWB fixing angle. Detach the chassis frame together with its terminals, from the sub PWB.

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

10. Remove the LED/HP PWB fixing screws (2 pcs.).

11. Remove the 4 lock screws each from the right and left speakers and take out both the speakers.

Main PWB

LED/HP PWB

Chassis Frame

Sub PWB

Inverter PWB

Speaker (L)

Speaker (R)

LC-20SH6U

» 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)

12. Detach the back shield.

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

14. 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.)

15. 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.

16. Detach the lamp unit from the backlight case.

Lens Sheet (POFMA0220TPZZ)

20" LCD Panel

Diffusion Plate (PSLDK2553TPZZ)

Diffusion Sheet (Bottom)

(PSLDK2554TPZZ) Diffusion Sheet (Top), x2 (PSLDK2567TPZZ)

Back Shield (PSLDM

Backlight Case (LHLDZ3104TPZA)

Lamp Unit, x5 (RLMPC2401TPZZ)

B019WJFW)

Bezel (LANGK3261TPZA)

LC-20SH6U

» 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

LED/HP 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-20SH6U

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

Tu r ning 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 →Tu rn ing 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

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

LHShift to adjustment mode

HLActivated with the checker-oriented master ROM values (EEP still brand-new even after the

checker mode)

LLThe 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-20SH6U

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 A635A.

(Adjustment Process Menu Page 1)

01234567891011 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

0 1 2 3 4 5 6

MOD E L 365A

INCH S I ZE ERR OR NO R ESE T PUB L I C MODE

–

V EXT

CH I P

CON T R O L

A 0

0 F

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.

LC-20SH6U

01234567891011 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 2

COM B I A S

45510

1 1

TAMP L YDA T A TAMP H

0 1 2 3 4

NTS C TAMP PAL

–

TMAMP

PAL

–

TNAMP

5 6

Y data

(white 100%)

6-2. 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 A3KL20SH6U

SETTING VALUE(NTSC)

Reference (Adjustment Process Menu Page 2)

155-158

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

6-3. 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=0.271 ±0.004 ±0.01 Radius from center point

y=0.278 ±0.004 ±0.01 Radius from center point

White 40% x=0.258 ±0.002 ±0.01 Radius from center point

y=0.261 ±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)

[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

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7-2. Description of Factory Settings.

Setting content/range Initial

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

(Items other than MENU)

LAST CHANNEL LAST TV/INPUT FLASH BACK SKIP DATA_CATV ALL SKIP SKIP DATA_AIR ALL SKIP VOLUME 20 LINE OUT LEVEL(VAO) EDS CH (AUTO)

BACKLIGHT BRIGHT/NORMAL/DARK/VARIABLE VARIABLE

CONTRAST 0~60 30 45 BRIGHTNESS -30~+30 COLOR 0+5 TINT 00 SHARPNESS 00 ADVANCED COLOR TEMP. USER/HIGH/MIDDLE/LOW

RESET YES/NO NO

AUDIO TREBLE 0

BASS 0 BALANCE 0 RESET YES/NO NO

SETUP CH-SETTING EZ-SETUP YES/NO YES

MTS STEREO/SAP/MONO STEREO INPUT3 SELECT IN/OUT /OUT IN V-CHIP BLOCK SECRET No. 4 digits input Clear

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

COLOR SYSTEM 20 N358 N358 N358

LANGUAGE ENGLISH/ESPANOL/FRANCAIS ENGLISH

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

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

ONEZ SETUP 2ch TV 2ch

RED 0 GREEN 0 BLUE 0 RESET YES/NO NO

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

AIR/CABLE AIR/CABLE AIR CH SEARCH CH MEMORY -

MPAA G (NONE)/BLOCK NONE

TV GUIDELINES TV-Y (NONE)/BLOCK NONE

CAN.ENGLISH RATINGS

CAN.FRENCH RATINGS

STATUS ON/OFF OFF

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

START YES/NO YES

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

C(NONE)/BLOCK NONE C8+ (NONE)/BLOCK NONE G(NONE)/BLOCK NONE PG (NONE)/BLOCK NONE 14+ (NONE)/BLOCK NONE 18+ (NONE)/BLOCK NONE G(NONE)/BLOCK NONE 8 ans+ (NONE)/BLOCK NONE 13 ans+ (NONE)/BLOCK NONE 16 ans+ (NONE)/BLOCK NONE 18 ans+ (NONE)/BLOCK NONE

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)

1 (DARK) ~9 (NORMAL)~17 (BRIGHT) 17 17

-30~+30

-10~+10

-30~+30

-10~+10

-10(L)~+10(R)

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

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

Value

(STANDARD) (DYNAMIC)

MIDDLE

(TV) (AV1) (AV2)

12:00AM

DISABLE DISABLE

(AV1) (AV2)

(DYNAMIC(FIXED)

(COMPONENT1)

DYNAMIC

(MOVIE)

0 0 0 0

(GAME)

0 0 0 0

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.

LC-20SH6U

Page 1 of the adjustment process

M O D E L A635A 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-20SH6U

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 A635A MODEL NUMBER SELECT NOT MODIFIABLE

VIDEO ADJUSTMENT

2 COM BIAS 450 COMMON BIAS ADJUSTMENT SEE THE ADJUSTMENT PROCEDURES.

Initial

Value (Do not change other items than designated.)

INCH SIZE 20 SCREEN SIZE SELECT USED FOR ADJUSTMENT PROCESS

(20-INCH AND 13/15-INCH INITIALIZATION, NOT MODIFIABLE FOR SETTING NOT SWITCHABLE IN OTHER CASES. DATA REWRITE AND CASE OF DIFFERENT SYSTEMS) READJUSTMENT REQUIRED WHEN

ERROR NO RESET 0 0 PUBLIC MODE OFF HOTEL MODE SETTING NOT USED V-CHIP 1 VCHIP LINE MUTE SETTING NOT USED EXT CONTROL OFF BUS, UART OPEN NOT USED ROM AND GAIBU VERSION NUMBERS DISPLAYED AT THE BOTTOM.

TAMP L 155 YDATA Ñ 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.

LAMP ERROR COUNT AND RESET

Y LOWER LIMIT SETTING AT TAMP ADJUSTMENT DATA READ VALUE AT TAMP ADJUSTMENT Y UPPER LIMIT SETTING AT TAMP ADJUSTMENT

Function

Response precautions on servicing

INITIALIZED. SEE THE LAMP ERROR DETECTION.

NOT USED SEE THE ADJUSTMENT PROCEDURES. NOT USED

BACKGROUND ADJUSTMENT

3R 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

TABLE OF VARIOUS SETTINGS

C DATA 0 I2C DATA WAIT WRITE AND READ EXECUTED NOT USED SOUND DVP TUNER OTHERS

I2C BUS CONTROL IC DATA WRITE AND READ

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.

AUDIO ADJUSTMENT PROCESS SPECIFICATIONS

Page No. Item

AUDIO ADJUSTMENT

SOUND1 VOLUME 20 SOUND VOLUME NOT USED

MSP DATA 0 MSP DATA WAIT CARRIER MUTE ON IGR THR 12D IGR THRESH LEVEL NOT USED

Initial

Value (Do not change other items than designated.)

AUDIO IC MSP DATA WRITE AND READ WRITE AND READ EXECUTED AUDIO OUTPUT SETTING WITHOUT TV SYNC

Function

Response precautions on servicing

NOT USED NOT USED NOT USED

AUDIO ADJUSTMENT

SOUND2 PRESCALE SCART 27

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

PRE-SCALE SETTING (EXTERNAL INPUT)

NOT USED

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Page No. Item

AUDIO ADJUSTMENT

SOUND3 BAND1 MIN TV -0400

OTHER

BAND1 CNT TV +0400

OTHER

BAND1 MAX TV +1200

OTHER

BAND2 MIN TV -0175

OTHER

BAND2 CNT TV -0125

OTHER

BAND2 MAX TV +0425

OTHER

BAND3 MIN TV -0250

OTHER

AUDIO ADJUSTMENT

SOUND4 BAND4 MIN TV +200

OTHER

BAND4 CNT TV +500

OTHER

BAND4 MAX TV +800

OTHER

BAND5 MIN TV -675

OTHER

BAND5 CNT TV +125

OTHER

BAND5 MAX TV +925

OTHER

Value (Do not change other items than designated.)

+0400

+1200

+0425

Initial

EQUALIZER SETTING (WITH TV INPUT)

-0400

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)

-0175

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

-0125

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

-0250

EQUALIZER SETTING (WITH OTHER INPUT THAN TV)

EQUALIZER SETTING (WITH TV INPUT)

+200

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

+500

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

+800

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

-675

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

+125

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

+925

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 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 F0 ------(----)

DVP TEST PATTERN 0 TEST PATTERN SELECT VCDOFFSET 15 VCDWINDOW 30

VIDEO ADJUSTMENT

DVP3 N358 TV CONTRAST 134 IMAGE SETTING (TV) NOT USED

N358 AV CONTRAST 134 N358 TV BRIGHT 115 BRIGHTNESS SETTING (TV) NOT USED N358 AV BRIGHT 115 N358 TV COLOR 40 COLOR DENSITY SETTING (TV) NOT USED N358 AV COLOR 40 N358 TV TINT 128 TINT SETTING (TV) NOT USED N358 AV TINT 128 N358 TV SHRAP V 100 V PICTURE QUALITY SETTING (TV) NOT USED N358 AV SHARP V 100 N358 TV SHRAP H1 150 H PICTURE QUALITY SETTING 1 (TV) NOT USED N358 AV SHARP H1 150 N358 TV SHRAP H2 130 H PICTURE QUALITY SETTING 2 (TV) NOT USED N358 AV SHARP H2 150

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

NOT USED

Response precautions on servicing

LC-20SH6U

Page No. Item

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

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)

Function

Response precautions on servicing

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

VIDEO ADJUSTMENT

DVP7 PAL60 AV CONT 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

VIDEO ADJUSTMENT

DVP8 PAL-M TV CONTRAST 128 IMAGE SETTING (TV) NOT USED

PAL-M AV CONTRAST 128 PAL-M TV BRIGHT 128 BRIGHTNESS SETTING (TV) NOT USED PAL-M AV BRIGHT 128 PAL-M TV COLOR 37 COLOR DENSITY SETTING (TV) NOT USED PAL-M AV COLOR 37 PAL-M TV TINT 128 TINT SETTING (TV) NOT USED PAL-M AV TINT 128 PAL-M TV SHRAP V 100 V PICTURE QUALITY SETTING (TV) NOT USED PAL-M AV SHARP V 100 PAL-M TV SHRAP H1 150 PAL-M AV SHARP H1 150 PAL-M TV SHRAP H2 130 PAL-M 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 (TV) H PICTURE QUALITY SETTING 1 (COMPOSITE, S VIDEO) H PICTURE QUALITY SETTING 2 (TV) H PICTURE QUALITY SETTING 2 (COMPOSITE, S VIDEO)

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

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Page No. Item

VIDEO ADJUSTMENT

DVP9 PAL-N TV CONTRAST 128 IMAGE SETTING (TV) NOT USED

PAL-N AV CONTRAST 128 PAL-N TV BRIGHT 128 BRIGHTNESS SETTING (TV) NOT USED PAL-N AV BRIGHT 128 PAL-N TV COLOR 37 COLOR DENSITY SETTING (TV) NOT USED PAL-N AV COLOR 37 PAL-N TV TINT 128 TINT SETTING (TV) NOT USED 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 PAL-N AV SHARP H1 150 PAL-N TV SHARP H2 130 PAL-N AV SHARP H2 150

VIDEO ADJUSTMENT

DVP10 525I CONT 134 IMAGE SETTING (TV) NOT USED

525I BRIGHT 115 BRIGHTNESS SETTING (TV) NOT USED 525I COLOR 60 COLOR DENSITY SETTING (TV) NOT USED 525I TINT 128 TINT SETTING (TV) NOT USED 525I SHARP V 100 V PICTURE QUALITY SETTING (TV) NOT USED 525I SHARP H1 100 525I SHARP H2 100 525P CONT 120 525P BRIGHT 134 525P COLOR 60 525P TINT 128 525P SHARP V 130 V PICTURE QUALITY SETTING (TV) NOT USED 525P SHARP H1 120 525P SHARP H2 120

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)

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

H PICTURE QUALITY SETTING 1 (TV) H PICTURE QUALITY SETTING 2 (TV)

Function

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

Response precautions on servicing

VIDEO ADJUSTMENT

DVP11 625I CONT 133 IMAGE SETTING (TV) NOT USED

625I BRIGHT 128 BRIGHTNESS SETTING (TV) NOT USED 625I COLOR 52 COLOR DENSITY SETTING (TV) NOT USED 625I TINT 128 TINT SETTING (TV) NOT USED 625I SHARP V 100 V PICTURE QUALITY SETTING (TV) NOT USED 625I SHARP H1 150 625I SHARP H2 150 625P CONT 133 625P BRIGHT 128 625P COLOR 52 625P TINT 128 625I SHARP V 130 V PICTURE QUALITY SETTING (TV) NOT USED 625I SHARP H1 120 625I SHARP H2 120

H PICTURE QUALITY SETTING 1 (TV) H PICTURE QUALITY SETTING 2 (TV)

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

NOT USED NOT USED

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Page No. Item

VIDEO ADJUSTMENT

DVP12 1125I CONT 133 IMAGE SETTING (TV) NOT USED

1125I BRIGHT 128 BRIGHTNESS SETTING (TV) NOT USED 1125ICOLOR 52 COLOR DENSITY SETTING (TV) NOT USED 1125I TINT 128 TINT SETTING (TV) NOT USED 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 CONT 133 750P BRIGHT 128 750P COLOR 52 750P TINT 128 750P SHARP V 100 V PICTURE QUALITY SETTING (TV) NOT USED 750P SHARP H1 100 H PICTURE QUALITY SETTING 1 (TV) NOT USED 750P 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

NOT USED NOT USED NOT USED NOT USED

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

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 JUDGMENT THRESHOLD (EXTERNAL INPUT) SYNC JUDGMENT THRESHOLD (COLOR DIFFERENCE INPUT) DURATION UNTIL JUDGMENT OF NO EDS TIME DATA (SECONDS)

Function

NOT USED NOT USED NOT USED NOT USED

NOT USED NOT USED NOT USED

Response precautions on servicing

TUNER SETTINGS

TUNER2 AFT FARTIME 50

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

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

OTHERS2 3D Y/C 0 0 3D ON/OFF SETTING NOT USED

3DY/C DATA 0 0 3D YC DATA WRITE AND READ NOT USED 3DY/C DATA WAIT WAIT WRITE AND READ EXECUTED NOT USED KIL OFF OFF FORCED KILLER SETTING FOR NOT USED

CLOSED CAPTION 15 15

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

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

SIGNAL WITHOUT COLOR BURST CLOSED CAPTION THRESH LEVEL

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

NOT USED

NOT USED NOT USED

NOT USED

PUBLIC MODE SETTING PROCEDURE

1. How to start Public Mode

• There are the following two ways to get the public mode setup screen displayed. 1 In the adjustment process mode, turn on "PUBLIC MODE". Also press the "CH (ù)" and "VOL (+)" keys on

the set at once and turn on the power.

2 1) Press the "INPUT" and "VOL (+)" keys on the set at once and turn on the power.

2) Get the password input screen displayed.

Procedure

• The input starts with the leftmost digit.

• Use the numeric keys [1] thru [9] and [10/0] keys on the remote con-

troller. The other keys are not acceptable.

• With a numeric-key input, "–" will change to " will move one digit to the right.

• With all the 3 digits entered, the password will be verified.

". The input position

LC-20SH6U

3) The 3-digit password is now verified. The password [0] [2] [7] provides for the public mode screen. (This screen comes on with whatever adjustment process settings.) With any other passwords, the screen changes to the normal mode.

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