SHARP LC-46SB57U, LC-52SB57U Service Manual

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LC-46SB57U/LC-52SB57U

SERVICE MANUAL

No. S49Y6LC46SB57

LCD COLOR TELEVISION

LC-46SB57U

MODELS

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-52SB57U

CONTENTS

SAFETY PRECAUTION

IMPORTANT SERVICE SAFETY

PRECAUTION.....................................................i

PRECAUTIONS A PRENDRE LORS DE

LA REPARATION...............................................ii

PRECAUTIONS FOR USING LEAD-FREE

SOLDER ........................................................... iii

CHAPTER 1. SPECIFICATIONS

[1] SPECIFICATIONS ......................................... 1-1

CHAPTER 2. OPERATION MANUAL

[1] OPERATION MANUAL .................................. 2-1

CHAPTER 6. TROUBLESHOOTING TABLE

[1] TROUBLESHOOTING TABLE ......................6-1

CHAPTER 7. OVERALL WIRING/SYSTEM BLOCK DIAGRAM

[1] OVERALL WIRING DIAGRAM ......................7-1

[2] SYSTEM BLOCK DIAGRAM .........................7-2

CHAPTER 8. PRINTED WIRING BOARD ASSEMBLIES

[1] KEY Unit ........................................................8-1

[2] MAIN Unit ......................................................8-2

[3] R/C, LED Unit ................................................8-6

CHAPTER 3. DIMENSIONS

[1] DIMENSIONS (LC-46SB57U)........................ 3-1

[2] DIMENSIONS (LC-52SB57U)........................ 3-2

CHAPTER 4. REMOVING OF MAJOR PARTS

[1] REMOVING OF MAJOR PARTS

(LC-46SB57U)................................................ 4-1

[2] REMOVING OF MAJOR PARTS

(LC-52SB57U)................................................ 4-7

CHAPTER 5. ADJUSTMENT

[1] ADJUSTMENT PROCEDURE ....................... 5-1

[2]

PUBLIC MODE SETTING PROCEDURE

Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the safety and performance of the set.

....... 5-16

CHAPTER 9. SCHEMATIC DIAGRAM

[1] DESCRIPTION OF SCHEMATIC

DIAGRAM...................................................... 9-1

[2] KEY Unit ........................................................9-2

[3] MAIN Unit ......................................................9-3

[4] R/C, LED Unit ..............................................9-19

Parts Guide

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

LC-46SB57U/LC-52SB57U

LC-46SB57U

SAFETY PRECAUTION

Service Manual

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: FO R CO NT I N U ED PROTECTION AGAINST A RISK OF FIRE REPLACE ONLY WITH SAME TYPE FUSE.

F7000 (250V 6.3A)

• 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 0.75 Vrms (this corresponds to 0.5 mA rms AC.) or more is excessive and indicates a potential shock hazard which must be corrected before returning the monitor to the owner.

DVM

BEFORE RETURNING THE RECEIVER (Fire & Shock Hazard)

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

3. 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.

4. 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.

5. 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.

• 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.

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

TO EXPOSED METAL PARTS

AC SCALE

1.5k ohm 10W

0.15µF

TEST PROBE

CONNECT TO KNOWN EARTH GROUND

SAFETY NOTICE

Many electrical and mechanical parts in LCD color 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 components having such features

are identified by " " and shaded areas in the Replacement Parts List and 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.

LC-46SB57U/LC-52SB57U

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

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

Débrancher le récepteur avant toute réparation.

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

F7000 (250V 6.3A)

VERIFICATIONS CONTRE L'INCEN-DIE ET LE CHOC ELECTRIQUE

Avant de rendre le récepteur à l'utilisateur, effectuer les vérifications suivantes.

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.

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 résistancecapacité, les isolateurs mécaniques, etc.

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 120V. (Ne pas utiliser de transformateur d'isolation pour cet essai).

A l'aide de deux fils à pinces, brancher une résistance de 1.5 kΩ 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 conduite électrique ou une prise de terre branchée à la terre.

•

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. Toutes les vérifications doivent être refaites 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.) 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.

DVM

ECHELLE CA

1.5k ohm 10W

0.15

SONDE D'ESSAI

AUX PIECES METALLIQUES EXPOSEES

BRANCHER A UNE TERRE CONNUE

AVIS POUR LA SECURITE

De nombreuses pièces, électriques et mécaniques, dans les téléviseur ACL 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 identifiées par la marque " " 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-46SB57U/LC-52SB57U

PRECAUTIONS FOR USING LEAD-FREE SOLDER

Employing lead-free solder

• “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:

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

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.

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

PARTS CODE

ZHNDAi123250E BL J φ0.3mm 250g (1roll) ZHNDAi126500E BK J φ0.6mm 500g (1roll) ZHNDAi12801KE BM J φ1.0mm 1kg (1roll)

PRICE RANK

PART

DELIVERY

DESCRIPTION

iii

LC-46SB57U/LC-52SB57U

LC-46SB57U

CHAPTER 1. SPECIFICATIONS

Service Manual

[1] SPECIFICATIONS

Item Model: LC-46SB57U Model: LC-52SB57U

LCD panel

46" Class (45

Advanced Super View & BLACK TFT LCD

52" Class (521/ Advanced Super View & BLACK TFT LCD

Diagonal)

Resolution 2,073,600 pixels (1,920 1,080)

TV-standard (CCIR) American TV Standard ATSC/NTSC System

VHF/UHF VHF 2-13ch, UHF 14-69ch

CATV 1-135ch (non-scrambled channel only)

TV Function

Receiving Channel

Digital Terrestrial Broadcast (8VSB)

Digital cable

(64/256 QAM)

2-69ch

1-135ch (non-scrambled channel only)

Audio multiplex BTSC System

Audio out 10W 2

INPUT 1 AV in, COMPONENT in

INPUT 2 COMPONENT in, S-VIDEO in

INPUT 4

ANALOG RGB (PC) in (15-pin mini D-sub female connector), Audio in (Ø 3.5 mm jack)

INPUT 6 HDMI in with HDCP, Audio in (Ø 3.5 mm jack)

INPUT 7 HDMI in with HDCP

INPUT 8 HDMI in with HDCP

Rear

Ω

Terminals

ANT/CABLE 75

AUDIO Audio in (Ø 3.5 mm jack)

DIGITAL AUDIO OUTPUT

Unbalance, F Type 1 for Analog (VHF/UHF/CATV) and Digital (AIR/CABLE)

Optical Digital audio output 1 (PCM/Dolby Digital)

OUTPUT Audio out

RS-232C 9-pin D-sub male connector

INPUT 3 AV in

Side

INPUT 5 HDMI in with HDCP

SERVICE Software update

OSD language English/French/Spanish

Power Requirement AC 120 V, 60 Hz

Power Consumption 254 W (0.5 W Standby with AC 120 V) 290 W (0.5 W Standby with AC 120 V)

Weight

Dimension

(W H D)

Operating temperature

Emergency alert messages via Cable are unreceivable.

The dimensional drawings are shown on the Spanish operation manual.

•

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

TV + stand 49.6 lbs./22.5 kg 58.5 lbs./26.5 kg

TV only 39.7 lbs./18.0 kg 50.7 lbs./23.0 kg

TV+stand 43

TV only 43

303/

2747/64329/32inch 4919/643111/32343/64inch

131/2inch 4919/643325/32131/2inch

+32°F to +104°F (0°C to +40°C)

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.

Diagonal)

Optional Accessory

The listed optional accessory is available for the Liquid Crystal Television. Please purchase it at your nearest shop.

• Additional optional accessories may be available in the near future. When purchasing, please read the newest catalogue for compatibility and check the availability.

1 – 1

Part name

Wall mount bracket

Model number

AN-52AG4

LC-46SB57U/LC-52SB57U

LC-46SB57U

CHAPTER 2. OPERATION MANUAL

[1] OPERATION MANUAL

TV (Front)

* OPC: Optical Picture Control

TV (Rear/Side)

Service Manual

Remote control sensor

OPC sensor

OPC indicator SLEEP indicator POWER indicator

POWER

button

INPUT

button

Channel buttons (CH /)

Volume buttons (VOL /)

INPUT 5 terminal (HDMI)

AC INPUT terminal

INPUT 7 terminal (HDMI)

INPUT 8 terminal (HDMI)

DIGITAL AUDIO OUTPUT terminal

AUDIO OUTPUT terminals

Antenna/Cable in

INPUT 3 terminals

SERVICE terminal

*1 External equipment connection. *2 Button operations. *3 Connecting the AC cord. *4 Details on the PC Audio Select function.

• The illustrations in this operation manual are for explanation purposes and may vary slightly from the actual operations.

• The examples used throughout this manual are based on the LC-52SB57U model.

INPUT 4 terminal (PC-IN)

AUDIO terminal (shared for INPUT 4 and INPUT 6) *4

INPUT 6 terminal (HDMI)

INPUT 1 terminals INPUT 2 terminals RS-232C terminal

2 – 1

Direct Button Operation

LC-46SB57U/LC-52SB57U

Changing Volume

You can change the volume by pressing VOL /on the TV or on the remote control unit.

•

To increase the volume, press VOL .

•

To decrease the volume, press VOL .

Audio status

Output device

Speaker Variable sound Mute

•

When "Output Select" is set to "Variable", the indicator on the screen changes as shown below.

Output Select

Fixed Variable

•

Details on the Output Select function.

MUTE

Mutes the current sound output. Press MUTE.

•

" " will be displayed on the screen for 30 minutes, and the sound is silenced.

POWER

You can turn on the TV or put it on standby by pressingPOWER on the TV or on the remote control unit.

Changing Channels

You can change channels by pressing CH

•(DOT).

Examples:

To select a 1 or 2-digit channel number (e. g., Channel 5):

Press 5 ENT.

To select a 3-digit channel number (e. g., Channel 115):

Press 1 1 5 ENT.

To select a 4-digit channel number (e. g., Channel 22.1):

Press 2 2 • (DOT) 1 ENT.

•

When selecting a 1-digit channel number, it is not necessary to press 0 before the number.

•

When you enter 0–9 only, channel selection will be made if there is no operation within a few seconds.

If you push "0" by itself, nothing will happen.

•

Complete the above steps within a few seconds.

•

When you enter 0–9 and • (DOT), channel selection will be made if there is no operation within a few seconds.

or 0–9,

FAVORITE CH

You can select 4 preset favorite channels in 4 different categories. Press A, B, C or D.

•

While watching the TV, you can toggle the selected channels by pressing A, B, C and D.

•

Within 30 minutes of pressing MUTE, mute can be canceled by pressing VOL Mute will be canceled after 30 minutes have passed.

• However, the TV will not suddenly output a loud sound as the volume level is set to 0 automatically.

/ or MUTE.

Sleep Timer

Allows you to set a time when the TV automatically switches to standby. Press SLEEP.

The remaining time displays when the sleep timer has been set.

• Each time you press SLEEP, the remaining time switches

• as shown below.

Off306090120

When set, the time automatically starts counting down.

• If you want to adjust the sleep timer, you can press SLEEP

• twice then change the time setting. When it is 5 minutes before the time expires, the remaining

• time will start to keep appearing every minute.

Select "Off" by pressing SLEEP to cancel the sleep timer.

• The TV will enter standby when the remaining time reaches 0.

• When the sleep timer is set, its indicator on the TV lights red.

•

FLASHBACK

Press FLASHBACK to switch to the previously tuned channel.

Press FLASHBACK again to switch back to the currently

• tuned channel.

FLASHBACK will not work if no channel has been changed

•

after the TV is turned on.

•

Details of favorite channel settings.

2 – 2

LC-46SB57U/LC-52SB57U

AV MODE

AV MODE gives you several viewing options to choose from to best match the surrounding environment of the TV, which can vary due to factors like room brightness, type of program watched or the type of image input from external equipment.

Press˴AV MODE. Current AV MODE displays.

•

Press AV MODE again before the mode displayed on the screen disappears. The mode changes as shown below:

Example: When the input source is TV, INPUT 1, 2 or 3 terminals

STANDARD MOVIE GAME USER [TV]

DYNAMIC DYNAMIC (Fixed)

Example: When the input source is INPUT 4, 5, 6, 7 or 8 terminals

STANDARD

DYNAMIC DYNAMIC (Fixed) USER[ ]

STANDARD: For a highly defined image in a normal

lighting.

MOVIE: For a movie. GAME: Lowers image brightness for easier viewing. PC: For PC. USER: Allows the user to customize settings as desired.

You can set the mode for each input source.

DYNAMIC (Fixed): Changes the image and sound

settings to the factory preset values. No adjustments are allowed.

DYNAMIC: For a clear-cut image emphasizing high

contrast, useful for sports viewing.

MOVIE GAME PC

AUDIO

MTS/SAP stereo mode

The TV has a feature that allows reception of sound other than the main audio for the program. This feature is called Multi-channel Television Sound (MTS). The TV with MTS can receive mono sound, stereo sound and Secondary Audio Programs (SAP). The SAP feature allows a TV station to broadcast other information, which could be audio in another language or something completely different like weather information.

You can enjoy Hi-Fi stereo sound or SAP broadcasts where available.

Stereo broadcasts: View programs like live sporting

•

events, shows and concerts in dynamic stereo sound.

SAP broadcasts: Receive TV broadcasts in either MAIN or

•

SAP sound. MAIN sound: The normal program soundtrack (either in mono or stereo). SAP sound: Listen to a second language, supplementary commentary or other information. (SAP is mono sound.)

If stereo sound is difficult to hear.

Obtain a clearer sound by manually switching to fixed

• mono-sound mode.

You can change MTS as shown below to match the television broadcast signal.

Press AUDIO to toggle between audio modes.

Examples: when receiving MTS and SAP

STEREO mode: STEREO + SAP mode:

MAIN + SAP mode: MONO mode:

STEREO

MAIN SAP

MONO

ST(SAP)

MONO

SAP(ST) MONO

•

You can select a different AV MODE item for each input mode. (For example, select STANDARD for TV input and DYNAMIC for INPUT 1.)

•

When you play games, "GAME" is recommended for AV MODE.

Allows you to gain quick access to PC mode. Press PC.

Operating On-Screen Display Menu

You can operate the on-screen display menu by using the following buttons. MENU: Displays the menu screen.

///,ENTER: Select a desired item on the

screen.

RETURN: Returns to the previous menu screen. EXIT: Turns off the menu screen.

For operating the on-screen display menu, see “Menu

• Operation Buttons”.

Digital broadcasting audio mode

The types of audio transmitted in a digital broadcast include SURROUND as well as MONO and STEREO. In addition, it is possible for multiple audio tracks to accompany a single video track.

Press AUDIO to toggle between audio modes.

Example: when receiving Digital broadcasting

STEREO (Audio1) STEREO (Audio2)

SURROUND (Audio3)

MTS only operates while in TV mode.

•

FREEZE

Allows you to capture and freeze a moving image that you are watching. Press FREEZE.

A moving image is captured.

• Press FREEZE again to cancel the function.

•

When this function is not available, "No displaying still image available." will display.

•

The still image automatically goes out after 30 minutes.

•

If you are using the freeze function and a broadcast activates the V-CHIP BLOCK, the freeze function will be canceled and a V-CHIP BLOCK message will appear.

2 – 3

INPUT

To view external source images, select the input source using INPUT on the remote control unit or on the TV.

Press INPUT.

A list of selectable sources appears.

•

Press INPUT again or press / to select the

input source.

•

An image from the selected source automatically displays.

•

Each time INPUT is pressed, the input source toggles.

•

If the corresponding input is not plugged in, you cannot change the input. Be sure to connect the equipment beforehand.

•

External equipment connection.

•

Press PC to switch to an image from the PC.

DISPLAY

Displays channel information being viewed. Press DISPLAY.

Closed Captions and Digital Closed Captions

Your TV is equipped with an internal Closed Caption decoder. It allows you to view conversations, narration and sound effects as subtitles on your TV. Closed Captions are available on some TV programs and on some VHS home video tapes at the discretion of the program provider.

Digital Closed Caption service is a new caption service available only on digital TV programs (also at the discretion of the service provider). It is a more flexible system than the original Closed Caption system, because it allows for a variety of caption sizes and font styles. When the Digital Closed Caption service is in use, it will be indicated by the appearance of a 3-letter abbreviation that also indicates the language of the Digital Closed Captions: ENG (English), SPA (Spanish), FRA (French) or other language codes.

Not all programs and VHS videotapes offer closed captions. Please look for the “ ” symbol to ensure that captions will be shown.

In the Closed Caption system, there can be more than one caption service provided. Each is identified by its own number. The “CC1” and “CC2” services display subtitles of TV programs superimposed over the program's picture.

LC-46SB57U/LC-52SB57U

Press CC.

This will present the Closed Caption information display.

•

Press CC while the Closed Caption information is

still on the screen.

•

Press repeatedly until you select the desired closed caption service.

Air DIGIT

Air DIGITAL

22.1

Audio : MONO

1080i (16:9)

Video 1080i (16:9)

CC 1/2 CC1:

Ratings : NONE

: NONE

•

Depending on the number of caption services in the signal being received, you will see information such as 1/2 or 1/4 displayed. 1/2 means “the first of two services”.

Example:

If a program has three services (Digital CC(ENG), CC1 and Text1), the closed caption display will toggle in this sequence:

1/3 ENG Off2/3 CC1 3/3 Text1

•

The CC button keeps a record of the last service selected in its memory. If the last closed caption mode (e.g. 1/3ENG) you selected is not available for the next program, or on another channel, the closed caption service that is available is automatically selected, and this service appears in parentheses, e.g. “1/3(CC1)”. Closed Caption services that appear in parentheses will notbestoredintheCC button's memory as your last selected service. Only services that you have selected with the CC button are stored.

Closed Caption information

information

Examples:

In a case where there are two closed caption services provided (for instance, Digital CC(ENG) and CC1), and Digital CC(ENG) is displayed as your current selection, if Digital CC(ENG) is not broadcast for the next program, the other closed caption service, CC1, will be displayed in parentheses. A closed caption service appears in parentheses because the service you selected is not available and a different service is displayed on your screen. “1/1(CC1)” is displayed instead of “1/2/ENG”.

In the Closed Caption system, the “Text1” or “Text2” services display text that is unrelated to the program being viewed (e.g., weather or news). These services are also superimposed over the program currently being viewed.

When “Power Saving” is set to “Standard” or “Advanced”,

• the Power Saving leaf icon appears on the channel information window. Details of Power Saving settings. Detailed closed caption settings.

• When the program contains no closed caption, “--” displays

• in the closed caption information. If the language code, e.g. “ENG”, is not found on Digital TV

• programs, “--” will be shown. Four kinds of closed caption service (CC1, CC2, Text1,

• Text2) are potentially available, but a broadcast may contain none or only some of these services at the discretion of the program provider.

2 – 4

LC-46SB57U/LC-52SB57U

VIEW MODE

You can select the screen size.

Press VIEW MODE.

•

The View Mode menu displays.

•

The menu lists the View Mode options selectable for the type of video signal currently being received.

Press VIEW MODE or / while the View Mode menu is displayed to select a desired item on the menu.

You can sequentially select a View Mode that has its own aspect ratio.

•

For 4:3 programs

Example: Screen size images

Side Bar S.Stretch (Smart stretch) Zoom Stretch

Suitable for viewing conventional 4:3 programs in their normal format.

Suitable for stretching 4:3 programs to fill the screen.

Suitable for viewing widescreen 2.35:1 anamorphic DVDs in full screen.

This mode is useful for 1.78:1 DVDs. When viewing 1.85:1 DVDs, stretch mode will still show very thin black bands at the top and bottom of the screen.

For HD programs

Stretch: Suitable for viewing wide-screen 1.78:1 aspect ratio program, stretch mode will still show very thin black bands at

the top and bottom of the screen.

Dot by Dot (1080i/p only): Detects the resolution of the signal and displays an image with the same number of pixels on

the screen.

Full Screen (720p only): You can select "Full Screen" only when receiving a 720p signal. S.Stretch (Smart stretch): Suitable for stretching 4:3 programs to fill the screen. Zoom: Suitable for viewing wide-screen 2.35:1 aspect-ratio programs in full screen.

When using Dot by Dot or Full Screen, it is possible to see noise or bars around different outer portions of the screen. Please

• change view mode to correct this.

For PC input mode

Connect the PC before making adjustments.

• Selectable screen size may vary with input signal type.

•

Example: Screen size images

Input signal Normal Zoom Stretch Dot by Dot

4:3 Keeps the original

aspect ratio in a full screen display.

Input signal Stretch Dot by Dot

16:9

An image fully fills the screen.

For viewing widescreen programs. The top and bottom of the image is cropped.

Detects the resolution of the signal and displays an image with the same number of pixels on the screen.

2 – 5

An image fully fills the screen.

Detects the resolution of the signal and displays an image with thesamenumberof pixels on the screen.

QUICK REFERENCE

LC-46SB57U/LC-52SB57U

Attaching/Detaching the Stand

• Before attaching (or detaching) the stand, unplug the AC

cord from the AC INPUT terminal.

• Before performing work spread cushioning over the base

area to lay the TV on. This will prevent it from being damaged.

CAUTION

• Attach the stand in the correct direction.

• Do not remove the stand from the TV unless using an

optional wall mount bracket to mount it.

• Be sure to follow the instructions. Incorrect installation of the stand may result in the TV falling over.

1 Confirm that there are 12 screws (all the same size)

and a hex key supplied with the stand unit.

2 Set the post for the stand unit onto the box.

Attach the base to the post.

Insert and tighten the 8 screws into the 8 holes on the bottom of the base.

Hex key

Screws

Setting the TV on the Wall

CAUTION

• This TV should be mounted on the wall only with the AN-52AG4 (SHARP) wall mount bracket. The use of other wall mount brackets may result in an unstable installation and may cause serious injuries.

• Installing the TV requires special skill that should only be performed by qualified service personnel. Customers should not attempt to do the work themselves. SHARP bears no responsibility for improper mounting or mounting that results in accident or injury.

Using an optional bracket to mount the TV

You can ask a qualified service professional about

•

using an optional AN-52AG4 bracket to mount the TV to the wall.

• Carefully read the instructions that come with the

bracket before beginning work.

Hanging on the wall

AN-52AG4 wall mount bracket. (See the bracket instructions for details.)

3 Insert the stand into the openings on the bottom

of the TV.

Insert and tighten the 4 screws into the 4 holes on the rear of the TV.

Hex key

Screws

Soft cushion

Vertical mounting Angular mounting

About setting the TV angle

LC-46SB57U

• The“b”positionisat the center of the display.

LC-52SB57U

• The center of the display:

/64inch (7.3 mm) under

the “ f ” position.

• Refer to the operation manual of AN-52AG4 for details.

• Detach the cable clamp on the rear of the TV when using the optional mount bracket.

• To use this TV mounted on a wall, remove the covers at the 4 locations on the rear of the TV, and then use the screws supplied with the wall mount bracket to secure the bracket to the rear of the TV.

• To detach the stand, perform the steps in reverse order.

2 – 6

LC-46SB57U/LC-52SB57U

Appendix

Troubleshooting

Problem

• No power

• Unit cannot be operated.

• Remote control unit does not operate.

• Picture is cut off/with sidebar screen.

• Strange color, light color, or color misalignment

• Power is suddenly turned off.

• No picture

Possible Solution

• Check if you pressed POWER on the remote control unit. If the indicator on the TV does not light up, press POWER on the TV.

• Is the AC cord disconnected?

• Has the power been turned on?

•

External influences such as lightning, static electricity, may cause improper operation. In this case, operate the unit after first turning off the power of the TV or unplugging the AC cord and replugging it in after 1 or 2 minutes.

• Are batteries inserted with polarity (+, -) aligned?

• Are batteries worn out? (Replace with new batteries.)

• Are you using it under strong or fluorescent lighting?

• Is a fluorescent light illuminated near the remote control sensor?

• Is the image position correct?

• Are screen mode adjustments such as picture size made correctly?

• Adjust the picture tone.

• Is the room too bright? The picture may look dark in a room that is too bright.

• Is the sleep timer set?

• Check the power control settings.

•

The unit's internal temperature has increased. Remove any objects blocking vent or clean.

• Is connection to other components correct?

• Is correct input signal source selected after connection?

• Is the correct input selected?

• Is picture adjustment correct?

• Is “On” selected in “Audio Only”?

• Is a non-compatible signal being input?

• No sound

• The TV sometimes makes a cracking sound.

• Is the volume too low?

• Is “Variable” selected in “Output Select”?

• Have you pressed MUTE on the remote control unit?

• This is not a malfunction. This happens when the cabinet slightly expands and contracts according to change in temperature. This does not affect the TV's performance.

Troubleshooting-Digital Broadcasting

The error message about reception of broadcast

The example of an error message

displayed on a screen

• Failed to receive broadcast.

• No broadcast now.

Error code

E202

E203 • Check the broadcast time in the program guide.

• Check the antenna cable. Check that the antenna is correctly setup.

Possible Solution

Cautions regarding use in high and low temperature environments

•

When the unit is used in a low temperature space (e.g. room, office), the picture may leave trails or appear slightly delayed. This is not a malfunction, and the unit will recover when the temperature returns to normal. Do not leave the unit in a hot or cold location. Also, do not leave the unit in a location exposed to direct sunlight or near a

• heater, as this may cause the cabinet to deform and the Liquid Crystal panel to malfunction. Storage temperature: - 4°F to + 140°F (- 20°C to + 60°C)

2 – 7

On-Screen Display Menu

Menu Items

LC-46SB57U/LC-52SB57U

For TV/INPUT 1/2/3 Mode

Picture Menu

OPC Backlight Contrast Brightness Color Tint Sharpness Advanced

C.M.S.-Hue C.M.S.-Saturation C.M.S.-Value Color Temp Fine Motion Enhanced Active Contrast Gamma Adjustment Film Mode Digital Noise Reduction 3D-Y/C Monochrome Range of OPC

Reset

Audio Menu

Treble Bass Balance Surround Bass Enhancer Reset

Power Control Menu

Power Saving No Signal Off No Operation Off

For HDMI/PC-IN Mode

Picture Menu

OPC Backlight Contrast Brightness Color Tint Sharpness Advanced

C.M.S.-Hue C.M.S.-Saturation C.M.S.-Value Color Temp Fine Motion Enhanced Active Contrast Gamma Adjustment Film Mode Digital Noise Reduction Monochrome Range of OPC

Reset

Audio Menu

Treble Bass Balance Surround Bass Enhancer Reset

Power Control Menu

Power Saving No Signal Off No Operation Off

Setup Menu

EZ Setup CH Setup Antenna Setup-DIGITAL Input Skip Input Label Parental CTRL Position Language Reset

Option Menu

Audio Only Input Select PC Audio Select Output Select Color System Caption Setup Digital Caption Info Program Title Display Favorite CH Game Play Time Operation Lock Out Demo Mode

Digital Setup Menu

Audio Setup Identification Software Update

Setup Menu

Input Skip Auto Sync Input Label Fine Sync Position Language Reset

Option Menu

Audio Only HDMI Setup PC Audio Select Output Select Game Play Time Operation Lock Out Demo Mode

Digital Setup Menu

Software Update

Some menu items may not be displayed depending on the selected input source.

2 – 8

LC-46SB57U/LC-52SB57U

LC-46SB57U

CHAPTER 3. DIMENSIONS

[1] DIMENSIONS (LC-46SB57U)

Service Manual

(763)

(400)

(704)

(59)

(174.3)

4353/64(1113)

4019/64(1023.4)

153/4(400)

(575.6)

(435)

457/

(124)

Unit: inch (mm)

2121/32(550)

329/

(99)

131/2(343)

3 – 1

[2] DIMENSIONS (LC-52SB57U)

LC-46SB57U/LC-52SB57U

(858)

(796)

(62)

(145)

4919/64(1252)

459/16(1156.9)

153/4(400)

(650.9)

(483)

513/

(132)

Unit: inch (mm)

2121/32(550)

343/

(93)

(400)

131/2(343)

3 – 2

LC-46SB57U/LC-52SB57U

LC-46SB57U

CHAPTER 4. REMOVING OF MAJOR PARTS

Service Manual

[1] REMOVING OF MAJOR PARTS (LC-46SB57U)

1. Removing of Stand Unit and Rear Cabinet Ass’y.

1. Remove the 4 lock screws and detach the Stand Unit.

2. Remove the 4 VESA Hole Covers .

3. Remove the 1 lock screw , 4 lock screws , 9 lock screws and detach the Rear Cabinet Ass’y.

Rear Cabinet Ass'y

Front Cabinet Ass'y

Stand Unit

4 – 1

LC-46SB57U/LC-52SB57U

2. Removing of Bottom Cover, Speaker-L/R, Side AV Cover, Main PWB Shield and Control Shield.

1. Remove the 1 lock screw and detach the Bottom Cover .

2. Disconnect SP wire. Detach the Speaker-L/R .

3. Remove the 2 lock screws and detach the Side AV Cover Ass’y.

4. Remove the 2 lock screws , 3 lock screws , 4 lock screws , 3 lock screws and detach the Main PWB Shield.

5. Remove the 4 lock screws , and detach the Control Shield Ass’y.

Main PWB Shield

Side AV Cover Ass'y

Speaker-R

Bottom Cover

Control Shield Ass'y

Speaker-L

4 – 2

LC-46SB57U/LC-52SB57U

3. Removing of Connectors.

1. Disconnect the following connectors from MAIN Unit. (LB1, LP, PD, LW, RA, KM, SP)

2. Disconnect the following connectors from POWER Unit. (LB1, PD, PL, LB2, LA)

3. Disconnect the following connectors from INVERTER-1 Unit. (LB2, LA)

4. Disconnect the following connectors from LCD Control Unit. (LP, LW, PL)

INVERTER-1 Unit

LB2

LB1

MAIN Unit LCD Control Unit POWER Unit

LB2

4 – 3

4. Removing of POWER Unit, MAIN Unit, KEY Unit Ass’y and R/C, LED Unit.

1. Remove the 6 lock screws and detach the POWER Unit.

2. Remove the 9 lock screws and detach the MAIN Unit.

3. Detach the KEY Unit Ass’y .

4. Detach the KEY Unit from KEY Button Cover Ass’y and disconnect KM wire .

5. Detach the R/C LED Unit and disconnect RA wire .

KEY Unit Ass'y

KEY Unit

LC-46SB57U/LC-52SB57U

KEY Button Cover Ass'y

R/C, LED Unit

POWER Unit

MAIN Unit

4 – 4

LC-46SB57U/LC-52SB57U

5. Removing of Main PWB Angle, Panel Support Angle and LCD Panel Module Unit.

1. Remove the 1 lock screw and detach the Main PWB Angle.

2. Remove the 16 lock screws and detach the Panel Support Angle.

3. Remove the 8 lock screws , 5 hooks and detach the LCD Panel Module Unit.

Panel Support Angle

Main PWB Angle

Hook

4 – 5

Hook

LCD Panel Module Unit

LC-46SB57U/LC-52SB57U

6. Removing of LCD Panel Module.

1. Remove the 14 lock screws , 2 lock screws and detach the Bezel Ass’y .

2. Detach the Lens Sheet and Diffusion Plate .

3. Detach the 2 pieces Lamp Holder Unit , Socket and detach the following 18 pieces Lamp from BL Chassis Ass'y .

BL Chassis Ass'y

Socket

Lamp Holder Unit

Lamp

Lamp Holder Unit

Lens Sheet

3 Bezel Ass'y

Diffusion Plate

4 – 6

LC-46SB57U/LC-52SB57U

[2] REMOVING OF MAJOR PARTS (LC-52SB57U)

1. Removing of Stand Unit and Rear Cabinet Ass’y.

1. Remove the 4 lock screws and detach the Stand Unit.

2. Remove the 4 VESA Hole Covers .

3. Remove the 1 lock screw , 1 lock screw , 12 lock screws and detach the Rear Cabinet Ass’y.

Rear Cabinet Ass'y

Front Cabinet Ass'y

Stand Unit

4 – 7

LC-46SB57U/LC-52SB57U

2. Removing of Speaker-L/R, Side AV Cover, Main PWB Shield and Control Shield.

1. Disconnect SP wire. Detach the Speaker-L/R .

2. Remove the 2 lock screws and detach the Side AV Cover Ass’y.

3. Remove the 3 lock screws , 4 lock screws , 2 lock screws , 3 lock screws and detach the Main PWB Shield.

4. Remove the 4 lock screws and detach the Control Shield Ass’y.

Main PWB Shield

Side AV Cover Ass'y

Control Shield

Ass'y

Speaker-R

Speaker-L

4 – 8

LC-46SB57U/LC-52SB57U

3. Removing of Connectors.

1. Disconnect the following connectors from MAIN Unit. (LB1 , LP, PD, LW, RA, KM, SP)

2. Disconnect the following connectors from POWER Unit. (LB1, PD, PL, LB2, LA)

3. Disconnect the following connectors from INVERTER-1 Unit. (LB2, LA)

4. Disconnect the following connectors from LCD Control Unit. (LP, LW, PL)

LB1

LCD Control Unit

LB1

INVERTER-1 Unit

LB2

MAIN Unit

POWER Unit

4 – 9

4. Removing of POWER Unit, MAIN Unit, KEY Unit Ass’y and R/C, LED Unit.

1. Remove the 6 lock screws and detach the POWER Unit.

2. Remove the 9 lock screws and detach the MAIN Unit.

3. Detach the KEY Unit Ass’y .

4. Detach the KEY Unit from KEY Button Cover Ass’y and disconnect KM wire .

5. Detach the R/C LED Unit and disconnect RA wire .

KEY Unit Ass'y

KEY Unit

LC-46SB57U/LC-52SB57U

KEY Button Cover Ass'y

R/C, LED Unit

POWER Unit

MAIN Unit

4 – 10

LC-46SB57U/LC-52SB57U

5. Removing of Main PWB Angle, Panel Support Angle, Barrier Sheet and LCD Panel Module Unit.

1. Remove the 1 lock screw and detach the Main PWB Angle.

2. Remove the 14 lock screws and detach the Panel Support Angle.

3. Remove the 6 lock screws , 10 lock screws and detach the 4 Corner Lug and 2 Center Lug .

4. Remove 4 hooks and detach the LCD Panel Module Unit .

Main PWB Angle

Corner Lug

Panel Support Angle

Hook

Corner Lug

Hook

LCD Panel Module Unit

5 5

Corner Lug

Center Lug

Corner Lug

4 – 11

LC-46SB57U/LC-52SB57U

6. Removing of LCD Panel Module.

1. Remove the 16 lock screws , 2 lock screws and detach the Bezel Ass’y .

2. Detach the Lens Sheet and Diffusion Plate .

3. Detach the 2 pieces Lamp Holder Unit , Socket and detach the following 18 pieces Lamp from BL Chassis Ass'y .

BL Chassis Ass'y

Socket

Lamp Holder Unit

Bezel Ass'y

Lens Sheet

Lamp

Diffusion Plate

Lamp Holder Unit

4 – 12

LC-46SB57U/LC-52SB57U

LC-46SB57U

CHAPTER 5. ADJUSTMENT

Service Manual

[1] ADJUSTMENT PROCEDURE

The adjustment values are set to the optimum conditions at the factory before shipping. If a value should become improper or an adjustment is required due to part replacement, make an adjustment according to the following procedure.

1. After replacement of any PWB unit and/or IC for repair, please note the following.

• When replacing the following units, make sure to prepare the new units loaded with updated software.

MAIN Unit: DUNTKE833FM05

• When replacing the LCD control PWB, perform the VCOM adjustment.

2. Upgrading of each microprocessor software

CAUTION: Never “POWER OFF” the unit when software upgrade is ongoing.

Otherwise the system may be damaged beyond recovery.

2.1. Software version upgrade

The model employs the following software.

• Main software (please use a software version after HLNAC300.USB.)

• Monitor microprocessor software (please use a software version after HLNAVC03.USB and HLNAM300.BIN.)

The main software, monitor microprocessor software can be upgraded by using a general-purpose USB Memory.

The followings are the procedures for upgrading, explained separately for the main software, monitor microprocessor software.

2.2. Main software version upgrade

2.2.1 Get ready before you start

• USB Memory of 128MB or higher capacity.

• PC running on Windows 98/98SE/ME/2000/XP operating system.

• USB Memory reader/writer or PC with a USB port.

• The file system of a USB memory is FAT. (FAT32 supports)

• Use the USB memory without other functions. (lock and memory reader...etc)

2.2.2 Preparations

To upgrade the main software, it is necessary to get ready the USB Memory for version upgrade before you start.

Follow the steps below and create the USB Memory for version upgrade.

1. Copy the file HLNACxxx.USB for version upgrade to the root directory (folder) of the USB Memory.

NOTE: In the USB Memory drive, do not store other folders or unrelated files, or more than one file for version upgrade.

Now the USB Memory for version upgrade is ready.

2.2.3 How to upgrade the software

1. Unplug the AC cord.

2. Insert the USB Memory for version upgrade (prepared as above) into the service socket located Right side of Main Board terminals, under INPUT3 terminal.

3. Plug in the AC cord with power button pressed down after 5 seconds, unpress the power button.

4. After the unit startup, the system upgrade screen as shown below appears within 20-40 seconds.

5 – 1

SB57U

LC-46SB57U/LC-52SB57U

5. Even a single failure in the process will trigger the upgrade failure screen.

SB57U

NOTE: In the event of a failure, repeat the upgrade process. If the process repeatedly fails, it is likely that the hardware need fixing.

6. Upon completion of the whole process, the upgrade success screen as shown below appears. You can check the new software version on this screen. The version information appears after the upgrade is complete.

SB57U

7. Unplug the AC cord and remove the USB Memory for version upgrade.

8. Now the software version upgrade is complete.

NOTE: When you are done with the software version upgrade, start the set, go to the top page of the adjustment process screen and check the main

software version information.

5 – 2

LC-46SB57U/LC-52SB57U

2.3. Monitor microprocessor software version upgrade

Create the USB memory for monitor microprocessor software version upgrade in the same manner as explained in the “Main software version upgrade”.

Copy the file HLNAVCxx.USB and HLNAMxxx.BIN (named temporarily) for monitor microprocessor software version upgrade to the USB memory

2.3.1 How to upgrade the software

1. Unplug the AC cord.

2. Insert the USB Memory for version upgrade (prepared as above) into the service socket located Right side of Main Board terminals, under INPUT3 terminal.

3. Plug in the AC cord with power button pressed down.

4. After 5 seconds, unpress the power button.

CAUTION: • The moment this operation is done, the upgrading of the monitor microprocessor software starts. While the upgrade is ongoing, never

5. After the unit startup, the upgrade starts. The power led will blink continuously. Also, an upgrade screen will be shown during a minor upgrade.

power off the unit. Otherwise the upgrade will fail and the system may be serious damaged beyond recovery (inability to start).

• After the monitor microprocessor software is upgraded, also perform the 'Industry Init'.

SB57U

6. If the upgrade fails, power led will stop blinking. Also, the upgrade failure screen will be shown if upgrade screen was shown at 5.

SB57U

NOTE: In the event of a transient failure, upgrade will be automatically retried up to three times. If the process repeatedly fails, hardware may be the

cause.

7. Up on completion of the whole process, power and OPC LED will blink alternately. Also, the upgrade success screen will be shown if upgrade screen was shown at 5.

SB57U

8. Unplug the AC cord and remove the USB Memory for version upgrade.

9. Now the software version upgrade is complete.

NOTE: When you are done with the software version upgrade, start the set, go to the top page of the adjustment process screen and check the mon-

itor microprocessor software version information and panel size information.

5 – 3

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