SHARP LC20S2US Service Manual

LC-20S2U-S

SERVICE MANUAL

S73F4LC-20S2U

LCD COLOR TELEVISION

MODEL

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

CONTENTS

» 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 ..................................................................................................35

» TROUBLE SHOOTING TABLE ...................................................................................................................42

» CHASSIS LAYOUT .....................................................................................................................................46

» BLOCK DIAGRAM ......................................................................................................................................48

» OVERALL WIRING DIAGRAM ...................................................................................................................50

» DESCRIPTION OF SCHEMATIC DIAGRAM .............................................................................................52

» SCHEMATIC DIAGRAM .............................................................................................................................53

» PRINTED WIRING BOARD ASSEMBLIES................................................................................................74

» REPLACEMENT PARTS LIST....................................................................................................................85

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

LC-20S2U-S

Page

SHARP CORPORATION

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

LC-20S2U-S

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 A GAINST A RISK OF FIRE REPLACE ONLY WITH S AM E TYPE F3701 (2.0A, 250V), F3301 (1.25A, 250V), F6700 (1.25A, 250V),

A V

F6701 (1.25A, 250V), F6702 (1.25A, 250V), F6703 (1.25A, 250V) AND F6704 (1.25A, 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 A C 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 ha ving 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 e xcessive 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 , w attage , 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 a 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-20S2U-S

VTVM

ECHELLE CA

1.5k ohm 10W

0.15 µF

SONDE D'ESSAI

AUX PIECES METALLIQUES EXPOSEES

BRANCHER A UNE TERRE CONNUE

PRECAUTIONS A PRENDRE LORS DE LA REPARATION

Ne peut effectuer la réparation qu' un technicien spécialisé qui s'est parfaitement accoutumé à toute vérification de sécurité et aux conseils suivants.

AVERTISSEMENT

conduite électrique ou une prise de terre branchée à la terre.

1. N'entreprendre aucune modification de tout circuit. C'est dangereux.

2. Débrancher le récepteur av ant toute répar ation.

PRECAUTION: POUR LA PROTECTION CONTINUE CONTRE LES RISQUES D'INCENDIE, REMPLACER LE FUSIBLE PAR UN FUSIBLE DE MEME TYPE F3701 (2.0A, 250V),

A V

F3301 (1.25A, 250V), F6700 (1.25A, 250V), F6701 (1.25A, 250V), F6702 (1.25A, 250V), F6703 (1.25A, 250V), F6704 (1.25A, 250V).

• Utiliser un voltmètre CA d'une sensibilité d'au moins 5000Ω/V pour mesurer la chute de tension 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. T outes les vérifications doivent être ref aites après avoir inversé la fiche du cordon d'alimentation. (Si nécessaire, une prise d'adpatation non polarisée peut être utilisée dans le but de terminer ces vérifications.) Tous les courants mesurés ne doivent pas dépasser 0,5 mA.

VERIFICATIONS CONTRE L'INCEN-DIE ET LE CHOC ELECTRIQUE

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

Avant de rendre le récepteur à l'utilisateur, effectuer 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, 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:

• 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 exposées du coffret et une terre connue comme une

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AVIS POUR LA SECURITE

De nombreuses pièces, électriques et mécaniques, dans les téléviseurs présentent des caractéristiques spéciales relatives à la sécurité, qui 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 pièces électriques qui présentent ces particularités sont

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identifiées par la marque " å " et hachurées dans la liste des pièces de remplacement et les diagrammes schématiques. 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, radiations X ou autres accidents.

LC-20S2U-S

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 ho w 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 y ou 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 allo yed 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-20S2U-S

Items

LCD panel Number of dots 921,600 dots VGA

Video color systems N358, N443, PAL, PAL-M, PAL-N, SECAM, PAL-60

TV Standard (CCIR) NTSC/PAL-M/PAL-N

TV function

Y/C FILTER 3D Y/C FILTER Brightness 430 cd/m Lamp life (Fluorescent lamp) 60,000 hours Viewing angles H: 170° V: 170° Audio amplifier 2.1 W x 2 Speakers 4 x 7 cm, 2 pcs.

Terminals COMPONENT COMPONENT-IN, AUDIO-IN

OSD language English/French/Spanish Power supply DC 12 V, AC 110–240 V, 50/60 Hz (AC Adapter), AC 125V MAX (AC Cord) Weight 15.9 lbs. (7.2 kg),w/o accessories

Accessories Remote control, Battery (x2), Antenna cable, AC adapter,

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

AV-IN1 AV-IN1, S-VIDEO-IN AV-IN2 AV-IN2, S-VIDEO-IN/AV-OUT

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

Model

LC-20S2U

19.7” Advanced Super View & BLACK TFT LCD

AC cord, Cable clamp (x2), Operation manual

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-20S2U-S

• TV/VIDEO, CH (

)/(

), VOL (–)/(+), and MENU on the main unit have the same functions as the same buttons

on the remote control. Basically, this operation manual provides a description based on operation with the remote

control.

DISPLAY AND CONTROL OVERVIEW

MAIN POWER

TV/VIDEO

CH (

)/( )

VOL (–)/(+)

Upper control panel

Speaker

Controls

* The examples used throughout this manual are based

on the LC-20S2U model.

HEADPHONE jack

Plug the headphone mini-plug into the HEADPHONE

jack located on the front of the TV set.

OPC sensor

Remote control sensor

OPC indicator (Optical Picture Control)

The Optical Picture Control indicator lights up green

when the BRIGHTNESS is set to AUTO.

POWER indicator

A green indicator lights when the power is on and a red

indicator lights when in the standby mode (the indicator

will not light when the main power is off).

To change the vertical

angle of the LCD TV set,

tilt the screen up to 2.5

degrees forward or 10

degrees backward. The

TV set can also be

rotated 25 degrees

horizontally. Adjust the

angle so that the TV set

can be watched most

comfortably.

S-VIDEO

AUDIO (L)

VIDEO

AUDIO (R)

AUDIO (L)

COMPONENT

AUDIO (L)

AUDIO (R)

VIDEO

AV-IN1

Carrying handle

Terminals

AUDIO (R)

S-VIDEO

ANT. (Antenna terminal)

POWER INPUT

(DC12V)

AV-IN2/OUTAV-OUT

Hold the carrying handle and tilt the

screen while steadying the stand with

your other hand.

● Adjusting the screen view angle

Round lock for

Kensington Security

Standard Slot.

OPERATION MANUAL

CHVOL

ENTER

BRIGHT

MUTE

SLEEP PIC. FLIP

AUDIO

ONLY

TV/VIDEO

FLASH-

BACK

DISPLAY MENU

REMOTE CONTROL

1 POWER

Switch the Liquid Crystal Television power

on or off.

2 SLEEP

Set the sleep timer.

3 ENTER

Execute a command.

4 DISPLAY

Display the channel and time information.

5 AUDIO ONLY

Output audio without screen image.

6 MUTE

Mute the sound.

7 VOL (+)/(–)

Set the volume.

8 CH (

)/(

)

Select channel.

9 MTS

Select audio settings.

10 BRIGHT

Adjust the brightness of the screen.

11 PIC. FLIP

Set the orientation of the picture.

(Cursor control)

Select a desired item on the screen.

13 MENU

Display the menu screen.

14 CC

Display Closed Caption subtitles.

15 TV/VIDEO

Select a Liquid Crystal Television input

source.

16 FLASHBACK

Return to the previous channel.

17 Channel Select

Set the channel.

PREPARATION

Batteries for the Remote Control

Before using the LCD TV set for the first time, install two (“AAA” size, UM/SUM-4) batteries (supplied).

When the batteries become depleted and the remote control fails to operate, replace the batteries with

new (“AAA” size, UM/SUM-4) batteries.

Open the battery

cover.

Insert two (“AAA” size, UM/

SUM-4) batteries.

Close the battery

cover.

■ Slide the cover while

pressing the ( ) part.

■ Position the positive and

negative ends of the batteries

as indicated in the compart-

ment.

–

■ Engage the claw on the

cover into the battery

housing and slide shut.

LC-20S2U-S

DIMENSIONS

Unit: inch (mm)

(248)

(283)

(474)

(403.3)

(411)

(473)

(300.8)

9(228.5)

(5)

(103)

(68)

(182.5)

(100)

((47)

(100)

(473)

(1)

(131)

(220)

REMOVING OF MAJOR PARTS

Cabinet A

Cabinet B

Stand

Terminal Cover

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

2. Remove the terminal cover.

3. Remove the terminal section fixing screws (3 pcs.).

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

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

6. Remove the reinforcement angle fixing screws (2 pcs.).

8. Detach the connector from each PWB.

LC-20S2U-S

Reinforcement Angle

Sub PWB

P6706

P6700

P6701

P6702

P6703

P6704

SC3401

P5602

P3303

P3801

P3302

SC2001

P3604

P3701

P701

P2001

P3603

SC1202

P1201

SC1204

SC1203

Main PWB

Inverter

PWB

P4003

7 7

R/C, LED

P4001

PWB

LC-20S2U-S

8. Remove the 3 lock screws from the main PWB and undo the hooks a and b. Lifting the other PWBs close to the hooks, draw out the main PWB.

9. Remove the 4 lock screws from the sub PWB and undo the hooks c and d. Detach the chassis frame (r ight), together with its terminals, from the sub PWB. Undo the hooks e and f in the same w ay. Detach the chassis frame (left), together with its terminals, from the sub PWB.

10. Remove the 3 lock screws from the inverter PWB and take out the inverter PWB.

11. Remove the 2 lock screws from the R/C, LED PWB and take out the R/C, LED PWB.

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

Chassis Frame (R)

Sub PWB

Main PWB

Chassis Frame (L)

LCD panel unit

Inverter PWB

Speaker (R)

Speaker (L)

R/C, LED PWB

» Precautions in handling the LCD panels

Diffusion Sheet

(PSHEPA127WJZZ)

Prism Sheet

(PSHEPA102WJZZ)

Diffusion Plate

(PCOVUA014WJZZ)

Lamp Holder (Top)-B

(LHLDZA212WJKZ)

Lamp Clip

(LHLDZA214WJKZ)

Reflection Sheet (Bottom)

(PSHEPA104WJZZ)

Reflection Sheet (Top)

(PSHEPA103WJZZ)

Lamp Holder (Bottom)

(LHLDZA213WJKZ)

Lamp Unit Ass'y

(CLMP-A024WJ01)

Lamp Holder (Top)-A

(LHLDZA211WJKZ)

Back shield Ass'y

(CSLDMA251WJ01)

Reflection/Deflection Sheet

(PSHEPA101WJZZ)

20" LCD Panel Unit

1. Work in a clean room (with humidities below 50%).

2. Be sure to wear an anti-static armband.

3. Handle the panels on an electro-conductive mat.

4. Be careful not to fall, shake and shock the panels.

13. Remove the 3 lock screws from the LCD panel and detach the LCD panel.

14. Remove the reflection/polarization sheet, prism sheet, diffusion sheet and diffusion panel.

15. Detach the lamp holders (top)-A, (top)-B and (bottom) from the lamp unit assembly.

16. Detach the reflection sheets (top) and (bottom) from the back shield.

LC-20S2U-S

Precautions at the time of the side B(back) service of Main unit.

1. Remove the FFC for connection between Main unit (SC2001) and Sub unit(SC3401), and connect the extended cable (QCNW-A556WJZZ) for service.

2. Remove only SC1204 of the FFC for connection between Main unit (SC1204) and LCD panel unit, and connect the extended cable (QCNW-A553WJZZ) for service.

3. Remove the FFC for connection between Main unit (SC1203) and LCD panel unit, and connect the extended cable (QCNW-A556WJZZ) for service.

4. Remove the FFC for connection between Main unit (SC1202) and LCD panel unit, and connect the extended cable (QCNW-A555WJZZ) for service.

5. Remove the main unit fixing screws (3 pcs.), a substrate is reversed.

Precautions at the time of the side B(back) service of Inverter unit.

6. Remove only P6706 of the cable f or connection betw een Inv erter unit (P6706) and Sub unit(P3604), and connect the extended cable (QCNW-B749WJQZ) for service.

7. Remove the Inverter unit fixing screws (3 pcs.), a substrate is reversed.

Sub PWB

P6706

P3604

P3701

P3801

Inverter

PWB

(Side B)

Inverter PWB

SC3401

SC1204

R/C, LED PWB

P1201

Main PWB

(Side B)

SC1202SC1203

P4001

P701

P2001

SC2001

Step Part No. Description

1 QCNW-A556WJZZ Extension Cable 50-pin Main (SC2001)-Sub (SC3401) 2 QCNW-A553WJZZ Extension Cable 30-pin Main (SC1204)-LCD Panel 3 QCNW-A556WJZZ Extension Cable 50-pin Main (SC1203)-LCD Panel 4 QCNW-A555WJZZ Extension Cable 20-pin Main (SC1202)-LCD Panel 6 QCNW-B749WJQZ Extension Cable 10-pin Inverter (P6706)-Sub(P3604)

LC-20S2U-S

ADJUSTING PROCEDURE OF EACH SECTION

1. Pre-adjustment preparations

Use the specific AC adaptor or a stable DC power supply as power source.

LC-13/15/20S2U AC adaptor: UADP-A044WJPZ DC power supply: 12V, 5.0A

(1) Entering the adjustment process mode

There are two ways to call this mode.

» Press "MENU" and "INPUT SELECT" at once, and the power is turned on (inspection process started). Then

press "CHANNEL DOWN" and "VOLUME DOWN" at once.

» Set the KEY4 (pin (81) of microprocessor) or KEY5 (pin (82) of microprocessor) terminal to the "L" level. Now

turn on the power.

(2) Key operation in the adjustment process

Basic behavior

» Use the "CHANNEL UP/DOWN" key or the "DIRECT CHANNEL SELECT" key to choose a channel. » Use the "CURSOR UP/DOWN" key to select an item to adjust. (Let's say that the cursor is on the lowermost item

and the "CURSOR DOWN" key is pressed. The uppermost item on the next page will be selected. When the "CURSOR UP" key is pressed with the uppermost item being highlighted, on the other hand, the lowermost item on the preceding page will be selected.)

» Use the "VOLUME UP/DOWN" key or the "CURSOR RIGHT/LEFT" key to adjust the setting of a selected item. » Press the "MENU" key to go to the next item. (When this key is pressed with the lowermost item being highlighted,

the uppermost item on the next page will be selected.)

Hierarchical structure

» Press the "ENTER" key on any item other than I » To quit the setup page, press the "FLASHBACK" key.

C DATA on page 4, and the item's setup page will show up.

LC-20S2U-S

2.Adjusting procedure

(1) Getting initialized

1) Set pins (81) and (82) of the IC2001 microprocessor to GND. Turn on the power.

2) Make sure the model number is A622. * Note: The model number cannot be selected.

3) Select the screen size (13/15/20 inches). Select the inch size according to the 20" model.

(2) +B adjustment

1) Receive the standard color bar signal.

2) Rotate R3710 (semi-fixed variable resistor) to adjust the voltage at pin (4) of P3701 on the sub PWB to

5.00V±0.02V.

Note:Be sure to adjust this PWB in pairs with the main PWB.

Adjust to the 5.00V level as exactly as possible because this level is used as reference for all the other supply voltages.

(3) Common bias adjustment

1) Adjust the "COM BIAS" setting on adjustment process page 2 so that the contrast goes to maximum (black most accentuated). (For this adjustment, receive a B/W broadcast channel.)

(4) White balance (cut-off and gain) adjustment

1) Receive the black signal (white 40%). Adjust the "RCUTOFF" and "BCUTOFF" settings on adjustment process page 3 to have the black color temperature as specified.

Adjustment Process Page 3

RCUTOFF 0 GCUTOFF 0 BCUTOFF 0 R-GAIN 0 G-GAIN 0 B-GAIN 0 D2 RCUTOFF 0 D2 GCUTOFF 0 D2 BCUTOFF 0 D2 R-GAIN 0 D2 G-GAIN 0 D2 B-GAIN 0

Red cut - off adjustment Green cut - off adjustment Blue cut - off adjustment White balance White balance White balance Red cut - off adjustment (D2:480P) Green cut - off adjustment (D2:480P) Blue cut - off adjustment (D2:480P) White balance (D2:480P) White balance (D2:480P) White balance (D2:480P)

2) Receive the white 80% signal. Adjust two of the "R-GAIN", "G-GAIN" and "B-GAIN" settings in the decreasing direction to have the white color temperature as specified. Note: Make sure at least one of the "R-GAIN", "G-GAIN" and "B-GAIN" settings is "0".

3) Check to see if the black and white color temperatures are as specified. If not, repeat the above steps 1) and

2).

4) 480P mode white balance adjustment Set the "D2 GCUTOFF" setting to -7. Check to see if the black and white color temperatures are as specified. If not, repeat the steps 1) thru 3). Adjust also the "D2 R/G/B CUTOFF" and "D2 R/G/B-GAIN" settings.

(5) Factory settings

1) Starting the factory process mode Press "MENU" and "INPUT SELECT" at once, and the power is turned on (inspection process started). Then press "CHANNEL UP" and "VOLUME UP" at once. Note: Once the factory settings have been made, immediately turn off the power switch. (At the next power-on,

the set gets started in the "EZ SETUP" mode. If an unnecessary key input is added after the factory settings, the set may malfunction.)

2) Factory settings at a glance

Item 20S2U

LAST CHANNEL 2ch

LAST TV/INPUT TV LAST AIR/CATV AIR

SKIP DATA CA TV ALL SKIP

SKIP DATA AIR ALL SKIP

VOLUME 20

VIDEO ADJUST (PICTURE) 50

VIDEO ADJUST (TINT) 0

VIDEO ADJUST (COLOR) 0

VIDEO ADJUST (BLACK LEVEL) 0

VIDEO ADJUST (SHARPNESS) 0

VIDEO ADJUST (RED-BLUE) 0

VIDEO ADJUST (GREEN) 0

LANGUAGE ENGLISH MTS MODE STEREO

BRIGHTNESS BRIGHT

AUTO POWER OFF OFF

PICTURE FLIP NORMAL

AV2 IN/OUT IN

CC/TEXT OFF

MPAA RATING NONE

GUIDELINE RATING NONE

GUIDELINE CONTENTS ALL UNBLOCK

V-CHIP STATUS OFF

BLUE SCREEN OFF

EZ SETUP SELF-START ON

SLEEP TIMER CLEAR

SECRET No. CLEAR TV COLOR SYSTEM N358 AV COLOR SYSTEM N358

TREBLE 0

BASS 0

BALANCE 0

AUDIO ONLY OFF

AUTO CLOCK SEARCH OFF

LC-20S2U-S

3. Test patterns in adjustment process mode

(1) IC801 (Video decoder) test patterns

1) Getting the test patterns displayed Put the screen in AV1, AV2 or COMPONENT but keep out any signal. Call the adjustment process mode, select "TEST P AT MODE" in the 1st line of XVC 1, make the settings 1 thru 12, and the follo wing test patterns show up.

2) Test patterns

Pattern Mode Pattern Option TEST PAT PIC TEST PAT MODE Color Bar 100% Color bar 0 1

75% Color bar 1 1

Ramp Ramp 0 2

Mod Ramp 1 2

Rester White 0 3

Yellow 1 3 Cyan 2 3 Green 3 3 Magenta 4 3 Red 5 3 Blue 6 3 Black 7 3

(2) IC1201 (LCD controller) test pattern

1) Getting the test pattern displayed Put the screen in AV1, AV2 or COMPONENT but keep out any signal. Call the adjustment process mode, select "DPS TESTP" in the 3rd line of DPS 1, turn on the setting, and the following test pattern shows up.

2) Test pattern The following test pattern appears.

Dark Dark Dark Red

Dark Dark

Black Gray White

Gray scale Bright

Green Blue

Gradation

Bright Bright Bright

Dark Dark Dark

Note: When the IC801 and IC1201 test pattern display commands are both turned on at the same time, the IC1201

test pattern is given priority.

Pin functions of microprocessor IC (IC2001) RH-iXA622WJZZQ

Pin No.

I/O Pin Name Function 1 I Vhold 2 I/O HLF 3 O 1 BIT_MUTE 4 O OPC_LED 5OVGH 6 I CSYNC 7 I IREM1 8 O BYTE 9 O CNVss

10 I Xcin 11 O Xout 12 I RESET 13 O Xout 14 I Vss 15 I Xin 16 I Vccl 17 I OSCin 18 O OSCout 19 I PSWin 20 O IRQN 21 O BLK 22 O OSD_1 23 O DAC1CS 24 O VDSW1 25 O D_SEL 26 O F_SEL 27 I MRDY 28 I/O SCL2 29 I/O SCL1 30 I/O SDA1 31 I/O SDA2 32 O OSD_R 33 O OSD_G 34 O OSD_B 35 O SUBDout 36 I SUBDin 37 I SCLK 38 O BUSY 39 O MAIN SW 40 O MON SW 41 I EPM 42 I L_ERR 43 O S IN/OUT 44 O PC/VD 45 O TIMELED 46 I CE 47 O AV1/AV2 48 O TV/AV 49 O TEXT-ON 50 O VSHOUT

For closed caption For closed caption N.C For OPC LED lighting For panel power supply control Composite sync signal Remote control GND GND ("H" at flash writing) 32 kHz oscillation input 32 kHz oscillation output Reset at "L" Microprocessor oscillator connection GND Microprocessor oscillator connection Power supply (3.3 V) Input of clock for OSD N.C Power supply monitor ("L" at power-ON) Spare OSD blanking output OSD Emphasis signal output Gradation control IC chip selection Video SW switching 1 output N.C N.C I2C bus open connection switching input I2C bus serial clock line 2 I2C bus serial clock line 1 I2C bus serial data line 1 I2C bus serial data line 2 OSD R signal output OSD G signal output OSD B signal output Sub-microprocessor data output (T x D at flash writing) Sub-microprocessor data input (R x D at flash writing) Clock input at flash writing BUSY output at flash writing Main switch ON "H"/OFF "L" (LED power supply control) N.C "L" at flash writing Fluorescent lamp error detection process (Error at "H") Audio input/output switching (Audio output at "L") N.C For LED lighting in working of timer "H" at flash writing AV selector switch AV selector switch N.C Panel gate driver voltage control

LC-20S2U-S

Pin No.

I/O Pin Name Function 51 I SSW2 52 O HPMUTE 53 O SP MUTE 1 54 O CVBS/Y 55 I HP DET 56 O SSTBY 57 I VSH IN 58 O LMUTE 59 O V IN/OUT 60 O SRESET 61 O C IN/OUT 62 I HSYNC 63 O MIX. 64 O VSYNC 65 O UP1 66 O UP0 67 O VDSW2 68 O EXT 69 O I2/UA 70 O POWout 71 O INV_POW 72 O POWout 73 I ADPPOW 74 O DACOUTCON 75 O MP_RCS 76 O MP_RDA 77 O MP_CS 78 O MP_DA 79 O MP_CLK 80 O DDC_RESET 81 I KEY4 82 I KEY5 83 O LED_POW 84 O SAW_SW 85 O MODE1 86 O MODE2 87 I POWin 88 I SSW 89 I AFT 90 I AGC 91 I KEY1 92 I KEY2 93 I C/N 94 O OPC_IN 95 I V HOLD2 96 I/O HLF2 97 I CVin2 98 I TVSETB 99 I VccE

100 I CVin1

S-terminal connection (S2-terminal at "L") Headphone mute Main speaker mute CVBS/Y switching Headphone detection (Headphone at "L") Speaker standby ("L" at standby) Panel gate driver voltage confirmation (Standby status maintained at "H") Line-out audio mute (Audio output mute at "H") Video input/output switching (Video output at "L") Stereo IC (MSP) ("L" output at reset) N.C OSD horizontal sync signal N.C OSD vertical sync signal N.C N.C Video switching 2 output N.C N.C N.C Separated exciting type inverter power supply control DC/DC control output Adaptor ON/OFF input For gradation control IC output control (Output at "H") Lead enable for QS-compliant controller Data input for QS-compliant controller Chip selection for QS-compliant controller QS-compliant controller or gradation control IC data output QS-compliant controller or gradation control IC clock output VPC, 3DY/C, DPS and QS-compliant controller ("L" output at reset) Key input 4 Key input 5 TV power supply LED control (Green at "H", red at "L") N.C N.C N.C DC/DC start detection (Detected at "H") S-terminal connection (S1-terminal at "L") AFT voltage input AGC input voltage Key input 1 Key input 2 N.C OPC sensor level input For closed caption For closed caption For closed caption Test input terminal (Fixed at "L") Power supply (5V) For closed caption

Table of Adjusting Process Defaults

Page No. Item

Basic settings

1 MODEL A622

INCH SIZE 20 ERROR NO RESET 0

PUBLIC MODE OFF V-CHIP 1 CANADIAN VCHIP OFF EXT CONTROL OFF

XVC SHARPNESS OFF

2 COM BIAS 110 3 RCUTOFF 0

GCUTOFF 0 BCUTOFF 0 R-GAIN 0 G-GAIN 0 B-GAIN 0 D2 RCUTOFF 0 D2 GCUTOFF 0 D2 BCUTOFF 0 D2 R-GAIN 0 D2 G-GAIN 0 D2 B-GAIN 0

4 I2C DATA 0

I2C DATA WAIT SOUND XVC DPS DAC TUNER OTHERS

LC-20S2U-S

Initial

Value (Do not change other items than designated.)

Model name selection (For prevention of malfunction, model name cannot be changed.) Inch size selection Lamp error count and reset For more than 5, adjustment process should be

Hotel mode setting VCHIP line MUTE setting Canadian VCHIP compliance setting Bus, UART open: ”ON” to ”OFF” (OSD display is not changed.) With or without SHARPNESS adjustment by XVC (480P is ineffective.) Common bias adjustment DAC OUT0A(00h) Red cutoff adjustment DSP control Green cutoff adjustment DSP control Blue cutoff adjustment DSP control White balance DSP control White balance DSP control White balance DSP control Red cutoff adjustment (D2) DSP control Green cutoff adjustment (D2) DSP control Blue cutoff adjustment (D2) DSP control White balance (D2) DSP control White balance (D2) DSP control White balance (D2) DSP control I2C BUS control IC Data WRITE & READ WRITE & READ execution Goes to SOUND adjustment page. Goes to XVC (XV 750) adjustment page. Goes to DPS adjustment page. Goes to DAC adjustment page. Goes to TUNER adjustment page. Goes to other adjustment page.

Function

Response precautions on servicing

started as soon as power is turned ON.

Sound volume

SOUND1 VOLUME 20

AVC OFF MSP DATA 0 MSP DATA WAIT CARRIER MUTE ON SP TEST OFF

SOUND2 PRESCALE SCART 27

PRESCALE FM/AM-M 31 IGR THR 12D

Sound volume AVC setting Audio IC MSP data WRITE & READ WRITE & READ execution Audio output setting for no TV sync For audio test Pre-scale setting (External input) Pre-scale setting (TV)

LC-20S2U-S

Page No. Item

Initial

Value (Do not change other items than designated.)

SOUND3 BASS EQ SET 0

TREB EQ SET 0 EQ LIMIT 00 00 EQ LIMIT 00 +12.0 EQ LIMIT 01 10 EQ LIMIT 01 +12.0 EQ LIMIT 02 20 EQ LIMIT 02 +12.0 EQ LIMIT 03 25 EQ LIMIT 03 +12.0 EQ LIMIT 04 30 EQ LIMIT 04 +12.0 EQ LIMIT 05 35 EQ LIMIT 05 +12.0 EQ LIMIT 06 40 EQ LIMIT 06 +12.0 EQ LIMIT 07 42 EQ LIMIT 07 +12.0 EQ LIMIT 08 44 EQ LIMIT 08 +12.0 EQ LIMIT 09 46 EQ LIMIT 09 +12.0 EQ LIMIT 10 48 EQ LIMIT 10 +12.0 EQ LIMIT 11 50 EQ LIMIT 11 +12.0 EQ LIMIT 12 52 EQ LIMIT 12 +12.0 EQ LIMIT 13 54 EQ LIMIT 13 +12.0 EQ LIMIT 14 56 EQ LIMIT 14 +12.0 EQ LIMIT 15 58 EQ LIMIT 15 +12.0

Function

User sound control bass value User sound control treble value Equalizer limit table 00 sound volume setting value Equalizer limit table 00 limit setting value Equalizer limit table 01 limit setting value Equalizer limit table 01 limit setting value Equalizer limit table 02 limit setting value Equalizer limit table 02 limit setting value Equalizer limit table 03 limit setting value Equalizer limit table 03 limit setting value Equalizer limit table 04 limit setting value Equalizer limit table 04 limit setting value Equalizer limit table 05 limit setting value Equalizer limit table 05 limit setting value Equalizer limit table 06 limit setting value Equalizer limit table 06 limit setting value Equalizer limit table 07 limit setting value Equalizer limit table 07 limit setting value Equalizer limit table 08 limit setting value Equalizer limit table 08 limit setting value Equalizer limit table 09 limit setting value Equalizer limit table 09 limit setting value Equalizer limit table 10 limit setting value Equalizer limit table 10 limit setting value Equalizer limit table 11 limit setting value Equalizer limit table 11 limit setting value Equalizer limit table 12 limit setting value Equalizer limit table 12 limit setting value Equalizer limit table 13 limit setting value Equalizer limit table 13 limit setting value Equalizer limit table 14 limit setting value Equalizer limit table 14 limit setting value Equalizer limit table 15 limit setting value Equalizer limit table 15 limit setting value

Response precautions on servicing

LC-20S2U-S

Page No. Item

Initial

Value (Do not change other items than designated.)

SOUND4 0 BAND1 +0275

0 BAND2 -0450 0 BAND3 -0175 0 BAND4 +0600 0 BAND5 +0400 1 BAND1 +0325 1 BAND2 -0450 1 BAND3 -0175 1 BAND4 +0600 1 BAND5 +0450 2 BAND1 +0375 2 BAND2 -0450 2 BAND3 -0175 2 BAND4 +0600 2 BAND5 +0500 3 BAND1 +0425 3 BAND2 -0450 3 BAND3 -0175 3 BAND4 +0600 3 BAND5 +0550 4 BAND1 +0475 4 BAND2 -0450 4 BAND3 -0175 4 BAND4 +0625 4 BAND5 +0600 5 BAND1 +0550 5 BAND2 -0400 5 BAND3 -0175 5 BAND4 +0650 5 BAND5 +0650 6 BAND1 +0625 6 BAND2 -0350 6 BAND3 -0175 6 BAND4 +0675 6 BAND5 +0700 7 BAND1 +0700 7 BAND2 -0300 7 BAND3 -0175 7 BAND4 +0700 7 BAND5 +0775 8 BAND1 +0775 8 BAND2 -0250 8 BAND3 -0175 8 BAND4 +0750 8 BAND5 +0850 9 BAND1 +0850 9 BAND2 -0200 9 BAND3 -0175 9 BAND4 +0800 9 BAND5 +0925 10 BAND1 +0925 10 BAND2 -0150 10 BAND3 -0175 10 BAND4 +0850 10 BAND5 +1000

Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table Equalizer table

Function

Response precautions on servicing

LC-20S2U-S

Page No. Item

Initial

Value (Do not change other items than designated.)

SOUND5 0 BAND1 +0275

0 BAND2 -0450 0 BAND3 -0175 0 BAND4 +0600 0 BAND5 +0400

-1 BAND1 +0225

-1 BAND2 -0450

-1 BAND3 -0175

-1 BAND4 +0600

-1 BAND5 +0350

-2 BAND1 +0175

-2 BAND2 -0450

-2 BAND3 -0175

-2 BAND4 +0600

-2 BAND5 +0300

-3 BAND1 +0125

-3 BAND2 -0450

-3 BAND3 -0175

-3 BAND4 +0600

-3 BAND5 +0250

-4 BAND1 +0075

-4 BAND2 -0450

-4 BAND3 -0175

-4 BAND4 +0575

-4 BAND5 +0200

-5 BAND1 0000

-5 BAND2 -0500

-5 BAND3 -0175

-5 BAND4 +0550

-5 BAND5 +0150

-6 BAND1 -0075

-6 BAND2 -0550

-6 BAND3 -0175

-6 BAND4 +0525

-6 BAND5 +0100

-7 BAND1 -0150

-7 BAND2 -0600

-7 BAND3 -0175

-7 BAND4 +0500

-7 BAND5 +0025

-8 BAND1 -0225

-8 BAND2 -0650

-8 BAND3 -0175

-8 BAND4 +0450

-8 BAND5 -0050

-9 BAND1 -0300

-9 BAND2 -0700

-9 BAND3 -0175

-9 BAND4 +0400

-9 BAND5 -0125

-10 BAND1 -0375

-10 BAND2 -0750

-10 BAND3 -0175

-10 BAND4 +0350

-10 BAND5 -0200

Function

Response precautions on servicing

LC-20S2U-S

Page No. Item

Video setting (XV750)

XVC01 TEST PAT MODE 0

TEST PAT PICT 0 TEST PAT AMP 0 VCXO MODE A 1 VCXO MODE B 2 VCXO CTL DC OFST 0 VCXO CTL TC 11 SV PORT POL 0 BELL FLT SFT 0 BELL FLT SHRP 0 DE-EMPHASYS 0

XVC02 HSYNC DELAY 38

VSYNC DELAY 0 VSYNC LINE SHIFT 11 ACC TC 4 AGC TC 4 PEAK AGC SET TC 4 PEAK AGC RLS TC 4 PEAK AGC RLS LEV 8 PEDLEV DET TC 0 COLER KILL ACT LEVEL 1 COLER KILL RCV LEVEL 0

XVC03 TV AGC MODE 1

AV AGC MODE 1

DVD AGC MODE 1 TV PEAK AGC REF +3 AV PEAK AGC REF +10

DVD PEAK AGC REF +10

XVC04 TV Y DELAY 0

AVC Y DELAY 0 AVS Y DELA Y 0 DVD Y DELAY 0 TV C DELAY -1 AVC C DELAY -1 AVS C DELAY -1 DVD C DELAY -1

XVC05 TV V PEAKING FILTER 0

AVC V PEAKING FILTER 0 AVS V PEAKING FILTER 0 TV V PEAKING WEIT 0 AVC V PEAKING WEIT 0 AVS V PEAKING WEIT 0 TV V PEAKING CORING 0 AVC V PEAKING CORING 0 AVS V PEAKING CORING 0

XVC06 TV CONTRAST 12

AV CONTRAST 12 DVD CONTRAST 12 TV BRIGHTNESS -3 AV BRIGHTNESS -3 DVD BRIGHTNESS -3 TV TRAP FLT 2 AVC TRAP FLT 2 AVS TRAP FLT 2

Initial

Value (Do not change other items than designated.)

XV750 test pattern selection (Mode) XV750 test pattern selection (Picture) XV750 test pattern selection (Amplitude) Line lock mode setting (TV/AV) Line lock mode setting (DVD) VCXO control voltage DC offset Constant at VCXO control SV port control signal polarity setting (in bits) Bell filter shift characteristics Bell filter sharp characteristics De-emphasis filter characteristics H sync phase setting (in pixels) V sync phase setting (in pixels) V sync phase setting (in lines) Constant at ACC Constant at AGC Constant at peak AGC setup Constant at peak AGC release Peak AGC release level Constant at pedestal level detection Color killer level setting Color killer hysteresis setting AGC operation mode setting (TV) AGC operation mode setting (Composite, S Video) AGC operation mode setting (DVD) Peak AGC reference level (TV) Peak AGC reference level (Composite, S Video) Peak AGC reference level (DVD) Y phase setting (TV) Y phase setting (Composite) Y phase setting (S Video) Y phase setting (DVD) C phase setting (TV) C phase setting (Composite) C phase setting (S Video) C phase setting (DVD) Vertical edge correction OFF/ON (TV) Vertical edge correction OFF/ON (Composite) Vertical edge correction OFF/ON (S Video) Vertical edge corrected intensity (TV) Vertical edge corrected intensity (Composite) Vertical edge corrected intensity (S Video) Vertical edge correction coring (TV) Vertical edge correction coring (Composite) Vertical edge correction coring (S Video) Picture setting (TV) Picture setting (Composite, S Video) Picture setting (DVD) Brightness setting (TV) Brightness setting (Composite, S Video) Brightness setting (DVD) Trap filter Setting (TV) Trap filter Setting (Composite) Trap filter Setting (S Video)

Function

Response precautions on servicing

LC-20S2U-S

Page No. Item

Initial

Value (Do not change other items than designated.)

XVC07 N358 TV CHROMA BPF 0

N358 AVC CHROMA BPF 0 N358 AVS CHROMA BPF 0 N358 BPFS 0 N358 LUMA DIG FIX GAIN 191 N358 TV COLOR +35 N358 AV COLOR +35 N358 U 0 N358 V 0 N358 TINT +8 N358 UVOFST 0

XVC08 N358 TV PEAKING FILTER 0

N358 AVC PEAKING FILTER 0

N358 AVS PEAKING FILTER 0

N358 TV H-PEAKING 6 N358 AVC H-PEAKING 6 N358 AVS H-PEAKING 6 N358 TV CORING 3 N358 AVC CORING 3 N358 AVS CORING 3

XVC09 PAL-M TV CHROMA BPF 0

PAL-M AVC CHROMA BPF 0 PAL-M AVS CHROMA BPF 0 PAL-M BPFS 0 PAL-M LUMA DIG FIX GAIN 195 PAL-M TV COLOR 20 PAL-M AV COLOR 20 PAL-M U 0 PAL-M V 0 PAL-M TINT 0 PAL-M UVOFST 0

XVC10 PAL-M TV PEAKING FILTER 0

PAL-M AVC PEAKING FILTER 0

PAL-M AVS PEAKING FILTER 0

PAL-M TV H-PEAKING 6 PAL-M AVC H-PEAKING 6 PAL-M AVS H-PEAKING 6 PAL-M TV CORING 3 PAL-M AVC CORING 3 PAL-M AVS CORING 3

XVC11 PAL-N TV CHROMA BPF 0

PAL-N AVC CHROMA BPF 0 PAL-N AVS CHROMA BPF 0 PAL-N BPFS 0 PAL-N LUMA DIG FIX GAIN 195 PAL-N TV COLOR 20 PAL-N AV COLOR 20 PAL-N U 0 PAL-N V 0 PAL-N TINT 0 PAL-N UVOFST 0

Function

Chroma band-pass setting (TV) Chroma band-pass setting (Composite) Chroma band-pass setting (S Video) COM filter setting Luminance fixation digital gain setting Color depth setting (TV) Color depth setting (Composite, S Video) Color depth U setting (TV, composite, S Video) Color depth V setting (TV, composite, S Video) Color tone setting (TV, composite, S Video) Color tone setting 2 (TV, composite, S Video) Horizontal edge correction OFF/ON, F characteristics (TV) Horizontal edge correction OFF/ON, F characteristics (Composite) Horizontal edge correction OFF/ON, F characteristics (S Video) Horizontal edge corrected amount (TV) Horizontal edge corrected amount (Composite) Horizontal edge corrected amount (S Video) Horizontal edge correction coring (TV) Horizontal edge correction coring (Composite) Horizontal edge correction coring (S Video) Chroma band-pass setting (TV) Chroma band-pass setting (Composite) Chroma band-pass setting (S Video) COM filter setting Luminance fixation digital gain setting Color depth setting (TV) Color depth setting (Composite, S Video) Color depth U setting (TV, composite, S Video) Color depth V setting (TV, composite, S Video) Color tone setting (TV, composite, S Video) Color tone setting 2 (TV, composite, S Video) Horizontal edge correction OFF/ON, F characteristics (TV) Horizontal edge correction OFF/ON, F characteristics (Composite) Horizontal edge correction OFF/ON, F characteristics (S Video) Horizontal edge corrected amount (TV) Horizontal edge corrected amount (Composite) Horizontal edge corrected amount (S Video) Horizontal edge correction coring (TV) Horizontal edge correction coring (Composite) Horizontal edge correction coring (S Video) Chroma band-pass setting (TV) Chroma band-pass setting (Composite) Chroma band-pass setting (S Video) COM filter setting Luminance fixation digital gain setting Color depth setting (TV) Color depth setting (Composite, S Video) Color depth U setting (TV, composite , S Video) Color depth V setting (TV, composite, S Video) Color tone setting (TV, composite, S Video) Color tone setting 2 (TV, composite, S Video)

Response precautions on servicing

LC-20S2U-S

Page No. Item

Initial

Value (Do not change other items than designated.)

XVC12 PAL-N TV PEAKING FILTER 0

PAL-N AVC PEAKING FILTER 0

PAL-N AVS PEAKING FILTER 0

P AL-N TV H-PEAKING 6 PAL-N AVC H-PEAKING 6 PAL-N AVS H-PEAKING 6 P AL-N TV CORING 3 PAL-N AVC CORING 3 PAL-N AVS CORING 3

XVC13 PAL TV CHROMA BPF 0

PAL AVC CHROMA BPF 0 PAL AVS CHROMA BPF 0 PAL BPFS 0 PAL LUMA DIG FIX GAIN 195 PAL TV COLOR 20 PAL AV COLOR 20 PAL U 0 PAL V 0 PAL TINT 0 PAL UVOFST 0

XVC14 PAL TV PEAKING FILTER 0

PAL AVC PEAKING FILTER 0

PAL AVS PEAKING FILTER 0

PAL TV H-PEAKING 6 PAL AVC H-PEAKING 6 PAL AVS H-PEAKING 6 PAL TV CORING 3 PAL AVC CORING 3 PAL AVS CORING 3

XVC15 SECAM TV CHROMA BPF 0

SECAM AVC CHROMA BPF 0 SECAM AVS CHROMA BPF 0 SECAM LUMA DIG FIX GAIN 195 SECAM U 0 SECAM V 0

XVC16 SECAM TV PEAKING FILTER 0

SECAM AVC PEAKING FILTER 0

SECAM AVS PEAKING FILTER 0

SECAM TV H-PEAKING 6 SECAM AVC H-PEAKING 6 SECAM AVS H-PEAKING 6 SECAM TV CORING 3 SECAM AVC CORING 3 SECAM AVS CORING 3

Function

Horizontal edge correction OFF/ON, F characteristics (TV) Horizontal edge correction OFF/ON, F characteristics (Composite) Horizontal edge correction OFF/ON, F characteristics (S Video) Horizontal edge corrected amount (TV) Horizontal edge corrected amount (Composite) Horizontal edge corrected amount (S Video) Horizontal edge correction coring (TV) Horizontal edge correction coring (Composite) Horizontal edge correction coring (S Video) Chroma band-pass setting (TV) Chroma band-pass setting (Composite) Chroma band-pass setting (S Video) COM filter setting Luminance fixation digital gain setting Color depth setting (TV) Color depth setting (Composite, S Video) Color depth U setting (TV, composite, S Video) Color depth V setting (TV, composite, S Video) Color tone setting (TV, composite, S Video) Color tone setting 2 (TV, composite, S Video) Horizontal edge correction OFF/ON, F characteristics (TV) Horizontal edge correction OFF/ON, F characteristics (Composite) Horizontal edge correction OFF/ON, F characteristics (S Video) Horizontal edge corrected amount (TV) Horizontal edge corrected amount (Composite) Horizontal edge corrected amount (S Video) Horizontal edge correction coring (TV) Horizontal edge correction coring (Composite) Horizontal edge correction coring (S Video) Chroma band-pass setting (TV) Chroma band-pass setting (Composite) Chroma band-pass setting (S Video) Luminance fixation digital gain setting Color depth U setting (TV, composite, S Video) Color depth V setting (TV, composite, S Video) Horizontal edge correction OFF/ON, F characteristics (TV) Horizontal edge correction OFF/ON, F characteristics (Composite) Horizontal edge correction OFF/ON, F characteristics (S Video) Horizontal edge corrected amount (TV) Horizontal edge corrected amount (Composite) Horizontal edge corrected amount (S Video) Horizontal edge correction coring (TV) Horizontal edge correction coring (Composite) Horizontal edge correction coring (S Video)

Response precautions on servicing

LC-20S2U-S

Page No. Item

Initial

Value (Do not change other items than designated.)

XVC17 PAL60 TV CHROMA BPF 0

PAL60 AVC CHROMA BPF 0 PAL60 AVS CHROMA BPF 0 PAL60 LUMA DIG FIX GAIN 195 P AL60 TV COLOR 20 PAL60 AV COLOR 20 PAL60 U 0 P AL60 V 0 P AL60 TINT 0 PAL60 UVOFST 0

XVC18 PAL60 TV PEAKING FILTER 0

PAL60 AVC PEAKING FILTER 0

PAL60 AVS PEAKING FILTER 0

P AL60 TV H-PEAKING 6 PAL60 AVC H-PEAKING 6 PAL60 AVS H-PEAKING 6 P AL60 TV CORING 3 PAL60 AVC CORING 3 PAL60 AVS CORING 3

XVC19 N443 TV CHROMA BPF 0

N443 AVC CHROMA BPF 0 N443 AVS CHROMA BPF 0 N443 LUMA DIG FIX GAIN 191 N443 TV COLOR 20 N443 AV COLOR 20 N443 U 0 N443 V 0 N443 TINT 0 N443 UVOFST 0

XVC20 N443 TV PEAKING FILTER 0

N443 AVC PEAKING FILTER 0

N443 AVS PEAKING FILTER 0

N443 TV H-PEAKING 6 N443 AVC H-PEAKING 6 N443 AVS H-PEAKING 6 N443 TV CORING 3 N443 AVC CORING 3 N443 AVS CORING 3

XVC21 DVD LUMA DIG FIX GAIN 195

DVD U 0 DVD V 0

XVC22 DVD PEAKING FILTER 0

DVD H-PEAKING 6 DVD CORING 3 XVC DATA 0 XVC DATA WAIT

Function

Chroma band-pass setting (TV) Chroma band-pass setting (Composite) Chroma band-pass setting (S Video) Luminance fixation digital gain setting Color depth setting (TV) Color depth setting (Composite, S Video) Color depth U setting (TV, composite, S Video) Color depth V setting (TV, composite, S Video) Color tone setting (TV, composite, S Video) Color tone setting 2 (TV, composite, S Video) Horizontal edge correction OFF/ON, F characteristics (TV) Horizontal edge correction OFF/ON, F characteristics (Composite) Horizontal edge correction OFF/ON, F characteristics (S Video) Horizontal edge corrected amount (TV) Horizontal edge corrected amount (Composite) Horizontal edge corrected amount (S Video) Horizontal edge correction coring (TV) Horizontal edge correction coring (Composite) Horizontal edge correction coring (S Video) Chroma band-pass setting (TV) Chroma band-pass setting (Composite) Chroma band-pass setting (S Video) Luminance fixation digital gain setting Color depth setting (TV) Color depth setting (Composite, S Video) Color depth U setting (TV, composite, S Video) Color depth V setting (TV, composite, S Video) Color tone setting (TV, composite, S Video) Color tone setting 2 (TV, composite, S Video) Horizontal edge correction OFF/ON, F characteristics (TV) Horizontal edge correction OFF/ON, F characteristics (Composite) Horizontal edge correction OFF/ON, F characteristics (S Video) Horizontal edge corrected amount (TV) Horizontal edge corrected amount (Composite) Horizontal edge corrected amount (S Video) Horizontal edge correction coring (TV) Horizontal edge correction coring (Composite) Horizontal edge correction coring (S Video) Luminance fixation digital gain setting Color depth U setting (TV, composite, S Video) Color depth V setting (TV, composite, S Video) Horizontal edge correction OFF/ON, F characteristics Horizontal edge corrected amount Horizontal edge correction coring XVC I2C BUS control data WRITE & READ WRITE (0XXYY) & READ (1XXYY) execution XX = Address, YY = Data

Response precautions on servicing

LC-20S2U-S

Page No. Item

Picture (DPS)

DPS01 DPS DATA 0

DPS DATA WAIT DPS TESTP OFF N358 TV COLOR 25 N358 AV COLOR 30 N358 TV TINT 6 N358 AV TINT 4 N358 BRIGHTNESS 12 N358 TV CONTRAST 55 N358 AV CONTRAST 55

DPS02 N358 TV PKLEVEL 5

N358 AV PKLEVEL 5

N358 TV PKCORRED7A 159 N358 AV PKCORRED7A 159

N358 TV PKCFSOFT7C 6 N358 AV PKCFSOFT7C 6

DPS03 N358 TV CTI7D 43

N358 AV CTI7D 43

N358 TV CTIBWLP7C 0 N358 AV CTIBWLP7C 0

DPS06 PAL-M TV COLOR 30

PAL-M AV COLOR 30

PAL-M TV TINT 0 PAL-M AV TINT 0

PAL-M BRIGHTNESS +12 PAL-M TV CONTRAST 50 PAL-M AV CONTTRAST 50

DPS07 PAL-M TV PKLEVEL 5

PAL-M AV PKLEVEL 5

PAL-M TV PKCORRED7A 159 PAL-M AV PKCORRED7A 159

PAL-M TV PKCFSOFT7C 6 PAL-M AV PKCFSOFT7C 6

DPS08 PAL-M TV CTI7D 153

PAL-M AV CTI7D 153

PAL-M TV CTIBWLP7C 0 PAL-M AV CTIBWLP7C 0

Initial

Value (Do not change other items than designated.)

Picture IC DPD data WRITE & READ Not used. WRITE & READ execution Not used. DPS pattern selection Color depth setting (TV) Not used. Color depth setting (Composite, S Video) Color tone setting (TV) Not used. Color tone setting (Composite, S Video) Not used. Brightness setting (TV, composite, S Video) Picture setting (TV) Not used. Picture setting (Composite, S Video) Not used. Picture quality setting (TV) Not used. Picture quality setting (Composite, Not used. S Video, for component 480I) Brightness peaking coring setting (TV) Not used. Brightness peaking coring setting Not used. (Composite, S Video, for component 480I) Brightness peaking center frequency (TV) Brightness peaking center frequency Not used. (Composite, S Video, for component 480I) CTI setting (TV) Not used. CTI setting (Composite, S Video, Not used. for component 480I) CTI band setting (TV) Not used. CTI band setting (Composite, S Video, Not used. for component 480I) Color depth setting (TV) Not used. Color depth setting (Composite, S Video, for component 480I) Color tone setting (TV) Not used. Color tone setting (Composite, S Video, Not used. for component 480I) Black level setting Not used. Picture setting (TV) Not used. Picture setting (Composite, S Video, Not used. for component 480I) Picture quality setting (TV) Not used. Picture quality setting (Composite, S Video, for component 480I) Brightness peaking coring setting (TV) Not used. Brightness peaking coring setting (Composite, S Video, for component 480I) Brightness peaking center frequency (TV) Brightness peaking center frequency Not used. (Composite, S Video, for component 480I) CTI setting (TV) Not used. CTI setting (Composite, S Video, Not used. for component 480I) CTI band setting (TV) Not used. CTI band setting (Composite, S Video, Not used. for component 480I)

Function

Response precautions on servicing

See the test pattern of adjustment process mode.

Not used.

LC-20S2U-S

Page No. Item

Initial

Value (Do not change other items than designated.)

DPS11 PAL-N TV COLOR 30

PAL-N AV COLOR 30

P AL-N TV TINT 0 PAL-N AV TINT 0

PAL-N BRIGHTNESS +12 P AL-N TV CONTRAST 50 PAL-N AV CONTTRAST 50

DPS12 PAL-N TV PKLEVEL 5

PAL-N AV PKLEVEL 5

P AL-N TV PKCORRED7A 159 PAL-N AV PKCORRED7A 159

P AL-N TV PKCFSOFT7C 6 PAL-N AV PKCFSOFT7C 6

DPS13 PAL-N TV CTI7D 153

PAL-N AV CTI7D 153

P AL-N TV CTIBWLP7C 0 PAL-N AV CTIBWLP7C 0

DPS16 PAL AV COLOR 30

PAL AV TINT 0

PAL BRIGHTNESS +12 PAL AV CONTTRAST 50

DPS17 PAL AV PKLEVEL 5

PAL AV PKCORRED7A 159

PAL AV PKCFSOFT7C 6

DPS18 PAL AV CTI7D 153

PAL AV CTIBWLP7C 0

DPS21 SECAM AV COLOR 30

SECAM AV TINT 0 SECAM BRIGHTNESS +12 SECAM AV CONTRAST 50

DPS22 SECAM AV PKLEVEL 5

SECAM AV PKCORRED7A 159

SECAM AV PKCFSOFT7C 6

DPS23 SECAM AV CTI7D 153

SECAM AV CTIBWLP7C 0

DPS26 PAL60 AV COLOR 30

PAL60 AV TINT 0

PAL60 BRIGHTNESS +12 PAL60 AV CONTRAST 50

Function

Color depth setting (TV) Not used. Color depth setting (Composite, S Video, for component 480I) Color tone setting (TV) Not used. Color tone setting (Composite, S Video, for component 480I) Black level setting Not used. Picture setting (TV) Not used. Picture setting (Composite, S Video, Not used. for component 480I) Picture quality setting (TV) Not used. Picture quality setting Not used. (Composite, S Video, for component 480I) Brightness peaking coring setting (TV) Not used. Brightness peaking coring setting (Composite, S Video, for component 480I) Brightness peaking center frequency (TV) Brightness peaking center frequency (Composite, S Video, for component 480I) CTI setting (TV) Not used. CTI setting (Composite, S Video, Not used. for component 480I) CTI band setting (TV) Not used. CTI band setting (Composite, S Video, Not used. for component 480I) Color depth setting (Composite, S Video, for component 480I) Color tone setting (Composite, S Video, for component 480I) Black level setting Not used. Picture setting (Composite, S Video, Not used. for component 480I) Picture quality setting (Composite, S Video, for component 480I) Brightness peaking coring setting (Composite, S Video, for component 480I) Brightness peaking center frequency (Composite, S Video, for component 480I) CTI setting (Composite, S Video, Not used. for component 480I) CTI band setting (Composite, S Video, Not used. for component 480I) Color depth setting (Composite, S Video) Color tone setting (Composite, S Video) Not used. Black level setting Not used. Picture setting (Composite, S Video) Not used. Picture quality setting (Composite, S Video) Brightness peaking coring setting Not used. (Composite, S Video) Brightness peaking center frequency (Composite, S Video) CTI setting (Composite, S Video) Not used. CTI band setting (Composite, S Video) Not used. Color depth setting (Composite, S Video, for component 480I) Color tone setting (Composite, S Video, Not used. for component 480I) Black level setting Not used. Picture setting (Composite, S Video, Not used. for component 480I)

Response precautions on servicing

Not used.

Not used. Not used.

Not used.

LC-20S2U-S

Page No. Item

Initial

Value (Do not change other items than designated.)

DPS27 PAL60 AV PKLEVEL 5

PAL60 AV PKCORRED7A 159

PAL60 AV PKCFSOFT7C 6

DPS28 PAL60 AV CTI7D 153

PAL60 AV CTIBWLP7C 0

DPS30 PAL60 HPRESC FIL42 0 DPS31 N443 AV COLOR 30

N443 AV TINT 3 N443 BRIGHTNESS +12 N443 AV CONTRAST 50

DPS32 N443 AV PKLEVEL 5

N443 AV PKCORRED7A 159

N443 AV PKCFSOFT7C 6

DPS33 N443 AV CTI7D 153

N443 AV CTIBWLP7C 0

DPS36 D2 AV COLOR 35

D2 AV TINT -2 D2 BRIGHTNESS -17 D2 AV CONTRAST 55

DPS37 D2 AV PKLEVEL 5

D2 AV PKCORRED7A 159

D2 AV PKCFSOFT7C 6

D2 VSTART1 20

D2 VSTOP1 21

D2 HSDEL 0

DPS38 D2 AV LTI 135

D2 AV LMODE79 191

D2 AV LMIX78 79

D2 AV CTI7D 0 D2 AV CTIBWLP7C 0

DPS39 D2 AV BLEMODE 3

D2 AV BGAINREF71 199

D2 AV POINT72 21

D2 AV MINFIL73 71

D2 AV CROP 7

Function

Picture quality setting (Composite, S Video, for component 480I) Brightness peaking coring setting Not used. (Composite, S Video, for component 480I) Brightness peaking center frequency (Composite, S Video, for component 480I) CTI setting (Composite, S Video, Not used. for component 480I) CTI band setting (Composite, S Video, Not used. for component 480I) Horizontal pre-scaler setting Not used. Color depth setting (Composite, S Video) Color tone setting (Composite, S Video) Not used. Black level setting Not used. Picture setting (Composite, S Video) Not used. Picture quality setting (Composite, S Video) Brightness peaking coring setting Not used. (Composite, S Video) Brightness peaking center frequency Not used. (Composite, S Video) CTI setting (Composite, S Video) Not used. CTI band setting (Composite, S Video) Not used. Color depth setting (For component 480P) Color tone setting (For component 480P) Black level setting (For component 480P) Picture setting (For component 480P) Not used. Picture quality setting (For component 480P) Brightness peaking coring setting Not used. (For component 480P) Brightness peaking center frequency Not used. (For component 480P) Screen vertical position setting Not used. (For component 480P) Screen vertical position setting Not used. (For component 480P) Horizontal sync input-to-output delay time setting (For component 480P) LTI setting (For component 480P) Not used. Brightness signal mixer setting Not used. (For component 480P) Variable mixing mode setting Not used. (For component 480P) CTI setting (For component 480P) Not used. CTI band setting (For component 480P) Not used. Black extension setting Not used. (For component 480P) Black extension gain setting Not used. (For component 480P) Black extension point setting Not used. (For component 480P) Black extension filter setting Not used. (For component 480P) Minimum measuring frame setting Not used. (For component 480P)

Response precautions on servicing

Not used.

Not used. Not used. Not used.

Not used.

LC-20S2U-S

Page No. Item

Initial

Value (Do not change other items than designated.)

DPS40 D2 HPRESC FIL42 48

D2 HSCPRESC 176

D2 HPOSC UPSF60 0

D2 HSCPOSC 4095

D2 VSCPOSC 4E 61

D2 VSCPOSC 4F 10

D2 VSCPOSC 50 0

D2 VOFPOSC 0

D2 VPOSC UPSF60 0

D2 PPLOP 820

DPS41 D2 RGB BRT 16

D2 RGB CON 35

D2 RGB USAT 32

D2 RGB VSAT 32

D2 FBLOFFST 0

D2 FBLDEL 2

D2 MIXGAIN 21

D2 NALPFOP 18

D2 ALPFOP 488

D2 OSD VB 17

D2 OSD VE 18

DPS42 NTSC NAPPL 23

NTSC NALPF 8

NTSC NALPFOP 16

NTSC ALPFOP 510

NTSC OSD VB 16

NTSC OSD VE 17

NTSC APPL 360

NTSC NAPPH 0

Function

Horizontal pre-scaler setting Not used. (For component 480P) Horizontal pre-scaler sub-sampling setting (For component 480P) Horizontal UP sampling filter characteristics (For component 480P) Horizontal post-scaler setting Not used. (For component 480P) Vertical post-scaler setting Not used. (For component 480P) Vertical post-scaler setting Not used. (For component 480P) Vertical post-scaler setting Not used. (For component 480P) Vertical edge flicker reduction setting Not used. (For component 480P) Vertical UP sampling filter characteristics (For component 480P) No. of pixels for one line setting Not used. (For component 480P) RGB (YCbCr) black level setting Not used. (For component 480P) RGB (YCbCr) picture setting Not used. (For component 480P) RGB (YCbCr) color contrast U setting Not used. (For component 480P) RGB (YCbCr) color contrast V setting Not used. (For component 480P) RGB (YCbCr) first blank offset correction setting (For component 480P) RGB (YCbCr) first blank delay setting Not used. (For component 480P) RGB (YCbCr) first blank gain setting Not used. (For component 480P) No. of invalid lines for output 1 field Not used. (For component 480P) No. of valid lines for output 1 field Not used. (For component 480P) OSD VSYNC output pulse start position setting (For component 480P) OSD VSYNC output pulse stop position setting (For component 480P) No. of invalid pixels from horizontal sync signal to input data (TV, composite, S Video, for component 480I) No. of invalid lines for input 1 field (TV, composite, S Video, for component 480I) No. of invalid lines for output 1 field (TV, composite, S Video, for component 480I) No. of valid lines for output 1 field (TV, composite, S Video, for component 480I) OSD VSYNC output pulse start position setting (TV, composite, S Video, for component 480I) OSD VSYNC output pulse stop position setting (TV, composite, S Video, for component 480I) No. of valid pixels for input 1 field (TV, composite, S Video, for component 480I) CbYCrY phase shift setting (TV, composite, S Video, for component 480I)

Response precautions on servicing

Not used.

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